Development of a compact in-situ ³He neutron spin filter at J-PARC
S. Takahashi; R. Kiyanagi; T. Okudaira; S. Takada; R. Kobayashi; M. Okuizumi; T. Ino; K. Asai; Y. Tsuchikawa; K. Oikawa; M. Harada; T. Ohhara; J. Suzuki; M. Fujita; Y. Ikeda; K. Kakurai; T. Oku, This study developed a compact and portable in-situ 3He neutron spin filter (in-situ 3He NSF) utilizing spin-exchange optical pumping at Materials and Life Science Experimental Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). This polarizing device aims to enhance the utilization of polarized pulsed neutrons. The length of the in-situ 3He NSF was 320 mm, making it well-suited for installation in a wide range of neutron instruments, including those with space constraints. Its performance as an incident neutron polarizer was evaluated at MLF, where it achieved a 3He polarization exceeding 0.6, corresponding to a neutron polarization greater than 0.8 at 1.8 Å. Notably, the in-situ 3He NSF demonstrated stable operation for 110 h. These outcomes signify that the developed in-situ 3He NSF facilitates and promotes polarized pulsed neutron experiments.
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Jun. 2025

Transverse asymmetry of individual $\gamma$ rays in the $^{139}$La($\overrightarrow{n},\gamma$)$^{140}$La reaction
Okuizumi Mao*; Auton C. J.*; Endo Shunsuke; Fujioka Hiroyuki*; Hirota Katsuya*; Ino Takashi*; Ishizaki Kohei*; Kimura Atsushi; Kitaguchi Masaaki*; Koga Jun*; Makise So*; Niinomi Yudai*; Oku Takayuki; Okudaira Takuya*; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Tada Hiroki*; Takada Shusuke*; Takahashi Shingo*; Tani Yuika*; Yamamoto Tomoki*; Yoshikawa Hiromoto*; Yoshioka Tamaki*, The observed enhancement of Parity Violation in the vicinity of p-wave compound nuclear resonances for a variety of medium-heavy nuclei can be understood using the sp-mixing model. The sp-mixing model predicts several neutron energy-dependent angular correlations between the spin and momentum of neutron and $\gamma$-ray emitted from (n,$\gamma$) reactions. In this work, the correlation term $\overrightarrow{\sigma_\textrm{n } }\cdot(\overrightarrow{k_\textrm{n } }\times\overrightarrow{k_\gamma})$ in the $^{139}$La($\overrightarrow{n}$,$\gamma$)$^{140}$La$^\ast$ reaction was measured precisely and a significant transverse asymmetry was found in the transition to the excited states of $^{140}$La.
Physical Review C, Mar. 2025, [Reviewed]

Circular polarization measurement for individual gamma rays in capture reactions with intense pulsed neutrons
Shunsuke Endo; Ryota Abe; Hiroyuki Fujioka; Takashi Ino; Osamu Iwamoto; Nobuyuki Iwamoto; Shiori Kawamura; Atsushi Kimura; Masaaki Kitaguchi; Ryuju Kobayashi; Shoji Nakamura; Takayuki Oku; Takuya Okudaira; Mao Okuizumi; Mohamed Omer; Gerard Rovira; Tatsushi Shima; Hirohiko M. Shimizu; Toshiyuki Shizuma; Yoshitaka Taira; Shusuke Takada; Shingo Takahashi; Hiromoto Yoshikawa; Tamaki Yoshioka; Heishun Zen, Springer Science and Business Media LLC
The European Physical Journal A, 28 Aug. 2024, [Reviewed]

Application of Energy‐Resolving Neutron Imaging to Major‐Component Analyses of Materials Using Four‐Channel Superconducting Detector
The Dang Vu; Hiroaki Shishido; Kazuya Aizawa; Takayuki Oku; Kenichi Oikawa; Masahide Harada; Kenji M. Kojima; Shigeyuki Miyajima; Kazuhiko Soyama; Tomio Koyama; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Masahiko Machida; Shuichi Kawamata; Takekazu Ishida, We proposed a current‐biased kinetic inductance detector (CB‐KID) as a novel superconducting detector to construct a neutron transmission imager. The characteristics of a superconducting neutron detector have been systematically studied to improve a spatial resolution down to 10 in transmission imaging. In this study, we report the application of the energy‐resolving neutron imaging to investigate major components of materials by analyzing neutron transmission spectra from 1 meV to 500 keV. We succeeded in identifying that copper (Cu) and iron (Fe) are major components respectively in commercial nuts and screws as test samples with the aid of Rietveld imaging of transmission spectra (RITS) program in analyzing transmission spectra in longer wavelengths. The Ti screw was also confirmed by comparing the nuclear resonance absorption measurements and simulations in high‐energy regions. We demonstrated that our superconducting neutron detector is applicable to reveal the transmission spectra in the wide range from cold‐neutron energies to higher neutron energies even up to 500 keV. By selecting distinctive energy regions of pulsed neutrons, we succeeded in mapping the distribution of SmSn₃ compound using the strong neutron absorption in samarium (Sm) and the selective nuclear‐resonance dips in Sm. By taking advantage of using CB‐KID in conducting neutron imaging, the CB‐KID method is extensively useful for various purposes in material sciences through energy‐selective neutron spectroscopy from 1 meV to 500 keV. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC., Wiley
IEEJ Transactions on Electrical and Electronic Engineering, 20 Jun. 2024

Present Status of Spectroscopy of the Hyperfine Structure and Repolarization of Muonic Helium Atoms at J-PARC
Seiso Fukumura; Patrick Strasser; Mahiro Fushihara; Yu Goto; Takashi Ino; Ryoto Iwai; Sohtaro Kanda; Shiori Kawamura; Masaaki Kitaguchi; Shoichiro Nishimura; Takayuki Oku; Takuya Okudaira; Hirohiko M. Shimizu; Koichiro Shimomura; Hiroki Tada; Hiroyuki A. Torii, The mass mμ− of the negative muon is one of the parameters of the elementary particle Standard Model and it allows us to verify the CPT (charge–parity–time) symmetry theorem by comparing mμ− value with the mass mμ+ of the positive muon. However, the experimental determination precision of mμ− is 3.1ppm, which is an order of magnitude lower than the determination precision of mμ+ at 120ppb. The authors aim to determine mμ− and the magnetic moment μμ− with a precision of O(10ppb) through spectroscopy of the hyperfine structure (HFS) of muonic helium-4 atom (4Heμ−e−) under high magnetic fields. He4μ−e− is an exotic atom where one of the two electrons of the He4 atom is replaced by a negative muon. To achieve the goal, it is necessary to determine the HFS of He4μ−e− with a precision of O(1ppb). This paper describes the determination procedure of the HFS of He4μ−e− in weak magnetic fields reported recently, and the work towards achieving the goal of higher precision measurement., MDPI AG
Physics, 12 Jun. 2024

Neutron transmission imaging system with a superconducting kinetic inductance detector
The Dang Vu; Hiroaki Shishido; Kazuya Aizawa; Takayuki Oku; Kenichi Oikawa; Masahide Harada; Kenji M. Kojima; Shigeyuki Miyajima; Kazuhiko Soyama; Tomio Koyama; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Masahiko Machida; Shuichi Kawamata; Takekazu Ishida, Abstract

We optimized the design and operating conditions of our superconducting neutron detector to improve spatial resolution. We obtained the best spatial resolution of 10 μm when a Gd Siemens star pattern was mounted in close contact with the detector. Although there is a trade-off between a spatial resolution and an easiness of replacing samples, we built our superconducting neutron imaging system for measuring in both the room-temperature samples with a proper collimation ratio L/D for achieving a reasonable spatial resolution and a cryogenic temperature with the best spatial resolution for certain purposes. In this study, we obtained neutron transmission images of various samples when they were cooled down with the superconducting neutron detector. We compared the effect of a different sample-detector distance on a spatial resolution when the samples were placed either at cryogenic temperature or at room temperature. We also confirmed that our CB-KID sensor was able to observe the neutron transmission coefficient over wider energies of pulsed neutrons. We found the appearance of clear Bragg dips by the measurements of natural FeS₂ single crystals and succeeded in mapping the distribution of differently-oriented crystals by choosing several Bragg dips of the FeS₂ crystals to compose the transmission images., IOP Publishing
Journal of Physics: Conference Series, 01 Jun. 2024

Interpenetration of rubber and silane coupling agent on an inorganic substrate revealed by spin-contrast-variation neutron reflectivity
Kumada Takayuki; Iwahara Daisuke*; Nishitsuji Shotaro*; Akutsu Kazuhiro*; Miura Daisuke; Motokawa Ryuhei; Sugita Tsuyoshi; Torikai Naoya*; Amino Naoya*; Oku Takayuki; Takenaka Mikihito*, We elucidated the entanglement of polybutadiene and silane coupling agent (SCA) molecules bound to Si substrates using spin-contrast-variation (SCV) neutron reflectivity (NR). In an annealed integral blend film of polybutadiene and SCA, a SCA layer generated on the Si substrate was composed of 70 vol. percent SCA molecules extended perpendicularly from the silicon substrate and entangled with 30 vol. percent polybutadiene molecules. By contrast, in an SCA-precoated polybutadiene film, the SCA-precoated layer is composed of densely packed SCA molecules forming crystal-like structure, and thus did not become entangled with the postcoated polybutadiene molecules. This poor entanglement resulted in poor binding between polybutadiene and Si substrate.
Journal of Physical Chemistry C, May 2024, [Reviewed]

Recent status of the cryogenic sample environment at the MLF, J-PARC
Ishikado Motoyuki*; Takahashi Ryuta*; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Ishimaru Sora*; Yamauchi Sara*; Kawamura Seiko; Kira Hiroshi*; Sakaguchi Yoshifumi*; Watanabe Masao; Oku Takayuki, Recent status of cryogenic sample environment equipment at the Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC) has been reported. We have reviewed the specifications and performance of cryogenic sample environment equipment and a newly installed Gifford-McMahon (GM) cryofurnace, which are mainly managed by the Cryogenic and Magnet group in the sample environment team at the MLF. Moreover, the recent maintenance and update of each piece of equipment, the improved temperature-control function, and the expansion of the usable beamline of the cryogenic sample environment equipment are described.
JPS Conference Proceedings (Internet), May 2024, [Reviewed]

New muonic He atom HFS measurements at J-PARC MUSE
Yu Goto; Seiso Fukumura; Patrick Strasser; Takashi Ino; Ryoto Iwai; Sohtaro Kanda; Shiori Kawamura; Masaaki Kitaguchi; Shoichiro Nishimura; Takayuki Oku; Takuya Okudaira; Hirohiko M. Shimizu; Koichiro Shimomura; Hiroki Tada; Hiroyuki A. Torii, Springer Science and Business Media LLC
Interactions, 26 Apr. 2024

High sensitivity of a future search for effects of $P$-odd/$T$-odd interactions on the 0.75 eV $p$-wave resonance in $\overrightarrow{n}$+$^{139}\overrightarrow{\textrm{La } }$ forward transmission determined using a pulsed neutron beam
Nakabe Rintaro*; Auton C. J.*; Endo Shunsuke; Fujioka Hiroyuki*; Gudkov V.*; Hirota Katsuya*; Ide Ikuo*; Ino Takashi*; Ishikado Motoyuki*; Kambara Wataru*; Kawamura Shihori; Kimura Atsushi; Kitaguchi Masaaki*; Kobayashi Ryuju*; Okamura Takahiro*; Oku Takayuki; Okudaira Takuya*; Okuizumi Mao*; Otero Munoz J. G.*; Parker J. D.*; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Shinohara Takenao; Snow W. M.*; Takada Shusuke*; Takahashi Ryuta*; Takahashi Shingo; Tsuchikawa Yusuke; Yoshioka Tamaki*, Neutron transmission experiments can offer a new type of highly sensitive search for time-reversal invariance violating (TRIV) effects in nucleon-nucleon interactions via the same enhancement mechanism observed for large parity violating (PV) effects in neutron-induced compound nuclear processes. In these compound processes, the TRIV cross-section is given as the product of the PV cross-section, a spin-factor $\kappa$, and a ratio of TRIV and PV matrix elements. We determined $\kappa$ to be 0.59 $\pm$ 0.05 for $^{139}$La+n using both (n, $\gamma$) spectroscopy and ($\overrightarrow{n}$+$^{139}\overrightarrow{\textrm{La } }$) transmission. This result quantifies for the first time the high sensitivity of the $^{139}$La 0.75 eV $p$-wave resonance in a future search for $P$-odd/$T$-odd interactions in ($\overrightarrow{n}$+$^{139}\overrightarrow{\textrm{La } }$) forward transmission.
Physical Review C, Apr. 2024, [Reviewed]

Spin dependence in the $p$-wave resonance of $^{139}$\overrightarrow{\textrm{La } }+\overrightarrow{n}
Okudaira Takuya*; Nakabe Rintaro*; Auton C. J.*; Endo Shunsuke; Fujioka Hiroyuki*; Gudkov V.*; Ide Ikuo*; Ino Takashi*; Ishikado Motoyuki*; Kambara Wataru*; Kawamura Shihori; Kobayashi Ryuju*; Kitaguchi Masaaki*; Okamura Takahiro*; Oku Takayuki; Otero Munoz J. G.*; Parker J. D.*; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Shinohara Takenao; Snow W. M.*; Takada Shusuke*; Tsuchikawa Yusuke; Takahashi Ryuta*; Takahashi Shingo; Yoshikawa Hiromoto*; Yoshioka Tamaki*, We measured the spin dependence in a neutron-induced p-wave resonance by using a polarized epithermal neutron beam and a polarized nuclear target. Our study focuses on the 0.75 eV $p$-wave resonance state of $^{139}$La+n, where largely enhanced parity violation has been observed. We determined the partial neutron width of the $p$-wave resonance by measuring the spin dependence of the neutron absorption cross section between polarized $^{139}$La and polarized neutrons. Our findings serve as a foundation for the quantitative study of the enhancement effect of the discrete symmetry violations caused by mixing between partial amplitudes in the compound nuclei.
Physical Review C, Apr. 2024, [Reviewed]

Development of instruments for imaging of local magnetic structure by magnetic neutron holography
Tomoya Kanno; Kenji Ohoyama; Hajime Nakada; Yuto Fukui; Kota Yamakawa; Shota Hoshi; Motoki Takano; Yodai Kobayashi; Yuka Tomimatsu; Shingo Takahashi; Takayuki Oku; Takuya Okudaira; Ryuju Kobayashi; Shusuke Takada; Masahide Harada; Kenichi Oikawa; Yasuhiro Inamura; Toetsu Shishido; Keisuke Sato; Kouichi Hayashi, Elsevier BV
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Apr. 2024

Study of Magnetic Environment for Neutron Spin Filters Using Polarized ³He at J-PARC and JRR-3
Shusuke Takada; Masaki Fujita; Yu Goto; Takashi Honda; Kazutaka Ikeda; Yoichi Ikeda; Takashi Ino; Koji Kaneko; Ryuju Kobayashi; Manabu Okawara; Takayuki Oku; Takuya Okudaira; Toshiya Otomo; Shingo Takahashi, Journal of the Physical Society of Japan
Proceedings of 11th International Workshop on Sample Environment at Scattering Facilities (ISSE Workshop Nasu 2022), 01 Mar. 2024

Contrast dependence of scattering profiles for poly(ethylene glycol) in water; Investigation by small-angle neutron scattering with $^{3}$He spin filter and small-angle X-ray scattering
Ryoki Akiyuki*; Watanabe Fumi*; Okudaira Takuya*; Takahashi Shingo*; Oku Takayuki; Hiroi Kosuke; Motokawa Ryuhei; Nakamura Yo*, Small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) measurements were performed for deuterated and non-deuterated poly(ethylene glycol) (d-PEG and h-PEG, respectively) in D$_{2}$O and a D$_{2}$O/H$_{2}$O mixed solvent (Mix) to compere the scattering profiles. To determine the coherent scattering intensity of SANS, a $^{3}$He spin filter was utilized. The scattering profiles determined by SANS measurements were analyzed in terms of the wormlike chain model with touched beads along the contour of the chain. However, the SAXS profiles were not explained by the same model with uniform beads but with beads each consisting of a core and a shell having different electron densities. To explore the chain thickness determined form the SANS profile, scattering intensities for different combinations of d-PEG/D$_{2}$O, d-PEG/Mix, h-PEG/D$_{2}$O, and h-PEG/Mix were also examined.
Journal of Chemical Physics, Mar. 2024, [Reviewed]

Neutron transmission CB-KID imager using samples placed at room temperature
Ishida Takekazu*; Vu TheDang*; Shishido Hiroaki*; Aizawa Kazuya; Oku Takayuki; Oikawa Kenichi; Harada Masahide; Kojima Kenji M*; Miyajima Shigeyuki*; Koyama Tomio*; Soyama Kazuhiko; Hidaka Mutsuo*; Suzuki Soh Y.*; Tanaka Manobu M*; Machida Masahiko; Kawamata Shuichi*, We built a new cryostat to apply a current-biased kinetic inductance detector (CB-KID) for conducting neutron transmission imaging of room temperature samples under pulsed neutrons. A Wood's metal alloy of melting temperature 75.2$^{\circ}$C was placed at room temperature to inspect the measurement system at J-PARC. Since one of the four phases of Wood's metal is a fine Cd-rich needle phase (width $\sim$ 25 $\mu$m and length $\sim$ 5 mm), it is suitable for observing fine mosaic structure selectively by neutron imaging. The spatial resolution of the CB-KID imager was estimated as $\sim$ 10 $\mu$m by using a Gd Siemens-star pattern. The CB-KID system is useful to conduct transmission imaging for various materials rather easily at room temperature.
Journal of Low Temperature Physics, Feb. 2024, [Reviewed]

Polarized Neutrons Observed Nanometer-Thick Crystalline Ice Plates in Frozen Glucose Solution.
Takayuki Kumada; Hiroshi Nakagawa; Daisuke Miura; Yurina Sekine; Ryuhei Motokawa; Kosuke Hiroi; Yasuhiro Inamura; Takayuki Oku; Kazuki Ohishi; Toshiaki Morikawa; Yukihiko Kawamura; Kiyoshi Kawai, Spin-contrast-variation (SCV) small-angle neutron scattering (SANS) is a technique to determine the nanostructure of composite materials from the scattering of polarized neutrons that changes with proton polarization of samples. The SCV-SANS enabled us to determine structure of nanoice crystals that were generated in rapidly frozen sugar solutions by separating the overlapped signals from the nanoice crystals and frozen amorphous solutions. In the frozen glucose solution, we found that the nanoice crystals formed a planar structure with a radius larger than several tens of nanometers and a thickness of 2.5 ± 0.5 nm, which was close to the critical nucleation size of ice crystals in supercooled water. This result suggests that the glucose molecules were preferentially bound to a specific face of nanoice crystals and then blocked the crystal growth perpendicular to that face.
The journal of physical chemistry letters, 21 Aug. 2023

Orientation mapping of YbSn$_{3}$ single crystals based on Bragg-dip analysis using a delay-line superconducting sensor
Shishido Hiroaki*; Vu TheDang*; Aizawa Kazuya; Kojima Kenji M*; Koyama Tomio*; Oikawa Kenichi; Harada Masahide; Oku Takayuki; Soyama Kazuhiko; Miyajima Shigeyuki*; Hidaka Mutsuo*; Suzuki Soh Y.*; Tanaka Manobu M*; Kawamata Shuichi*; Ishida Takekazu*, Recent progress in high-power pulsed neutron sources has stimulated the development of the Bragg dip and Bragg edge analysis methods using a two-dimensional neutron detector with high temporal resolution to resolve the neutron energy by the time-of-flight method. A delay-line current-biased kinetic inductance detector (CB-KID) is a two-dimensional superconducting sensor with a high temporal resolution and multi-hit capability. Here, it is demonstrated that a delay-line CB-KID with a $^{10}$B neutron conversion layer can be applied to high-spatial-resolution neutron transmission imaging and spectroscopy up to 100 eV. Dip structures are observed in the transmission spectra of YbSn$_{3}$ single crystals, induced by Bragg diffraction and nuclear resonance absorption. The orientation mapping of YbSn$_{3}$ crystals is successfully drawn based on the analysis of observed Bragg dip positions in the transmission spectra.
Journal of Applied Crystallography, Aug. 2023, [Reviewed]

Crystalline Orientation of CaF₂ window determined by Neutron Transmission Imaging using a Delay Line Current-Biased Kinetic-Inductance Detector
Hiroaki Shishido; The Dang Vu; Kazuya Aizawa; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Kazuhiko Soyama; Shigeyuki Miyajima; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Shuichi Kawamata; Takekazu Ishida, Abstract

The combination of a high speed two-dimensional neutron detector and an intensive pulsed neutron source provides not only neutron transmission imaging but also information on crystal structures, orientations and constituent elements by analyzing neutron transmission spectra. The delay-line current-biased kinetic-inductance detector (CB-KID) is a two-dimensional superconducting neutron detector with high spatial and temporal resolutions, and multi-hit tolerance. We demonstrated that the delay-line CB-KID with a ¹⁰B neutron conversion layer can be applied for neutron transmission measurements up to 100 keV. We observed two-different dip structures in the transmission spectra in a CaF₂ single crystal, i.e., one is from the Bragg diffraction and the other is from nuclear resonance absorption. We consider that some duplicated structures in resonance absorption dips are originating from a double-bunch structure of proton pulses for producing pulsed neutrons in the accelerator., IOP Publishing
Journal of Physics: Conference Series, 01 Jul. 2023

Superconducting neutron transmission imaging for investigating a sequential change in phase separations of low-melting Wood’s metal
The Dang Vu; Hiroaki Shishido; Kazuya Aizawa; Takayuki Oku; Kenichi Oikawa; Masahide Harada; Kenji M. Kojima; Shigeyuki Miyajima; Kazuhiko Soyama; Tomio Koyama; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Masahiko Machida; Shuichi Kawamata; Takekazu Ishida, Abstract

We built a new cryostat system for a current-biased kinetic inductance detector (CB-KID) to be able to place a sample at room temperature for conducting the neutron transmission imaging experiments with pulsed neutrons. A Wood’s metal alloy sample (Bi 50wt.%, Pb 25wt.%, Sn 12.5wt.%, Cd 12.5wt.%) of melting temperature 75.2°C was used to check a practical test by observing fine microstructures under beam power of 812 kW at beamline BL10 of J-PARC (MLF). The Wood’s metal is composed of four phases, of which one is a Cd-rich needle-like phase of an average width of 25 µm and length of 5 mm. Since Cd is a strong neutron absorber, it is suitable for observing the fine mosaic structure contrastingly in neutron transmission imaging. After neutron-transmission imaging with the Wood’s metal in the initial state, we subsequently melted the Wood’s metal sample and solidified it again by slow cooling during the same beam time. We were successful in observing an impressive change in morphology of the phases by neutron-transmission imaging. Room-temperature sample imaging is very convenient for possible users, and is expected to be very useful for applying our CB-KID system to versatile different materials of interests., IOP Publishing
Journal of Physics: Conference Series, 01 Jul. 2023

The first polarized neutron diffraction experiment at the time-of-flight single crystal neutron diffractometer SENJU at J-PARC
S Takahashi; R Kiyanagi; R Kobayashi; T Okudaira; T Ino; J Suzuki; K Kakurai; T Oku, Abstract

The ³He spin filter has been developed to use pulsed neutrons effectively at J-PARC MLF. In this study, the ³He spin filter was installed in the single crystal neutron diffractometer (BL18 SENJU) at J-PARC MLF as a polarizer of the incident beam, and Half-polarized neutron diffraction experiments were performed. The ³He spin filter was used the ”drop-in cell” method with cells that had a relaxation time of 150 hours in the past experiments. The sample was a single crystal of Heusler crystal Cu₂MnAl and the sample magnetic field was 0.3 T. The intensities of (111) Bragg peaks of Cu₂MnAl were drastically changed with the polarity of the incident neutron beam, and the flipping ratio of 21.7 at 3.6 Å was observed. The experimental setup and the performance of the ³He spin filter used in this experiment are described in detail in this paper., IOP Publishing
Journal of Physics: Conference Series, 01 Apr. 2023

Status of the new muonic helium atom HFS measurements at J-PARC MUSE
P Strasser; S Fukumura; T Ino; R Iwai; S Kanda; S Kawamura; M Kitaguchi; S Nishimura; T Oku; T Okudaira; S Seo; H M Shimizu; K Shimizu; K Shimomura; H Tada; T Tanaka; H A Torii; H Yamauchi; H Yasuda, Abstract
Measurements of the muonic helium atom hyperfine structure (HFS) are a sensitive tool to test the theory of three-body atomic systems and bound-state quantum electrodynamics (QED) and to determine fundamental constants of the negative muon magnetic moment and mass. The world’s most intense pulsed negative muon beam at J-PARC MUSE brings an opportunity to improve previous measurements and test further CPT invariance by comparing the magnetic moments and masses of positive and negative muons. Test measurements at D-line are now in progress utilizing MuSEUM apparatus at zero field. The first results already have better accuracy than previous measurements in the 1980s. Also, the investigation of a new experimental approach to improve HFS measurements by repolarizing muonic helium atoms using a spin-exchange optical pumping (SEOP) technique was started. If successful, this would drastically improve the measurement accuracy., {IOP} Publishing
Journal of Physics: Conference Series, 01 Mar. 2023

Optically Polarized Alkali Metal Cell for Muonic Helium Measurements
Takashi Ino; Seiso Fukumura; Patrick Strasser; Masaki Fujita; Yoichi Ikeda; Sohtaro Kanda; Masaaki Kitaguchi; Shoichiro Nishimura; Takayuki Oku; Takuya Okudaira; Hirohiko M. Shimizu; Koichiro Shimomura, Journal of the Physical Society of Japan
Proceedings of the 24th International Spin Symposium (SPIN2021), 26 Dec. 2022

Measurement of the transverse asymmetry of $\gamma$ rays in the $^{117}$Sn($n,\gamma$)$^{118}$Sn reaction
Endo Shunsuke; Okudaira Takuya*; Abe Ryota*; Fujioka Hiroyuki*; Hirota Katsuya*; Kimura Atsushi; Kitaguchi Masaaki*; Oku Takayuki; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Takahashi Shingo*; Yamamoto Tomoki*; Yoshikawa Hiromoto*; Yoshioka Tamaki*, Largely enhanced parity-violating effects observed in compound resonances induced by epithermal neutrons are currently attributed to the mixing of parity-unfavored partial amplitudes in the entrance channel of the compound states. Furthermore, it is proposed that the same mechanism that enhances the parity violation also enhances the breaking of time-reversal invariance in the compound nucleus. The entrance-channel mixing induces energy-dependent spin-angular correlations of individual γ rays emitted from the compound nuclear state. For a detailed study of the mixing model, the γ-ray yield in the reaction of Sn117(n,γ)Sn118 was measured using a pulsed beam of polarized epithermal neutrons and Ge detectors. An angular dependence of asymmetric γ-ray yields for the orientation of the neutron polarization was observed.
Physical Review C, Dec. 2022, [Reviewed]

Structure analysis of a buried interface between organic and porous inorganic layers using spin-contrast-variation neutron reflectivity
Kumada Takayuki; Miura Daisuke*; Akutsu Kazuhiro*; Oishi Kazuki*; Morikawa Toshiaki*; Kawamura Yukihiko*; Suzuki Junichi*; Oku Takayuki; Torikai Naoya*; Niizeki Tomotake*, Spin-contrast-variation neutron reflectivity obtains multiple reflectivity curves from a single sample and a single beam source. We used the strong point of the technique to reveal that, although methylated-perhydropolysilazane-derived silica layer has a higher porosity near the interface with acrylic urethane resin, the resin did not permeate the pore network., International Union of Crystallography (IUCr)
Journal of Applied Crystallography, Oct. 2022, [Reviewed]

Neutron Imaging toward Epithermal Regime using a Delay Line Current-Biased Kinetic-Inductance Detector
Hiroaki Shishido; The Dang Vu; Kazuya Aizawa; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Kazuhiko Soyama; Shigeyuki Miyajima; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Shuichi Kawamata; Takekazu Ishida, Abstract

Wide energy range neutron imaging and spectroscopy in a single experiment without changing the setup is available by a combination of a high-power pulsed neutron source and fast operating neutron detector. The delay-line current-biased kinetic-inductance detector (CB-KID) is a two-dimensional superconducting detector with high spatial and temporal resolutions, and multi-hit tolerance. We demonstrate that the delay-line CB-KID with ¹⁰B neutron conversion layer is applicable for neutron imaging and spectroscopy up to the neutron energy of 100 eV. High spatial neutron transmission image for a Sm-Sn mixed metal is successfully constructed below 0.3 eV. Concomitantly, we examine the neutron transmission up to 100 eV and identify observed resonance dips by Sm nuclei., IOP Publishing
Journal of Physics: Conference Series, 01 Aug. 2022

Narrow-area Bragg-edge transmission of iron samples using superconducting neutron sensor
The Dang Vu; Hiroaki Shishido; Kazuya Aizawa; Takayuki Oku; Kenichi Oikawa; Masahide Harada; Kenji M. Kojima; Shigeyuki Miyajima; Kazuhiko Soyama; Tomio Koyama; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Alex Malins; Masahiko Machida; Takekazu Ishida, Abstract

This study investigates a current-biased kinetic inductance detector (CB-KID) performance by investigating Bragg-edge spectra from the restricted-area neuron transmission of materials. Iron samples with a size of 5 × 5 ×2 mm³ were used as typical test materials. The ergodic theorem was used to obtain a visible transmission spectrum so that a long-time averaging of a transmission spectrum can alternatively be evaluated using a space average of independently selected area spectra with the same ensemble size. The most visible edges were observed with a limited area sample of 0.43 mm² using a minimum time bin of 25 μs in a time-of-flight (ToF) spectrum or a wavelength resolution of 0.0007 nm of each neutron pulse at beamline BL10 of the Japan Proton Accelerator Research Complex (J-PARC) center. The main Bragg edge of iron as a sum of random 100 ensembles (with an ensemble size of 3.1 × 2.3 μm²) thus obtained has a distinctive signal-to-noise ratio and can be fitted well with the Rietveld Imaging of Transmission Spectra (RITS) program with Miller indices. We consider that our CB-KID system is, in principle, able to analyze the Bragg edge of samples as small as 3.1 × 2.3 μm²., IOP Publishing
Journal of Physics: Conference Series, 01 Aug. 2022

Proposal for new measurements of muonic helium hyperfine structure at J-PARC
Seiso Fukumura; Patrick Strasser; Takashi Ino; Takayuki Oku; Takuya Okudaira; Sohtaro Kanda; Masaaki Kitaguchi; Koichiro Shimomura; Hirohiko M. Shimizu; Hiroyuki A. Torii; Shoichiro Nishimura, The measurement of the ground state hyperfine structure of muonic helium has the potential to improve the precision of the mass of the negative muon by a factor of 50 or more. The mass of the negative muon is very important because it enables us to test the CPT theorem by comparison with positive muon mass. We aim to measure the hyperfine structure of muonic helium with a precision 1000 times higher than previous experiments [1,2] using the highintensity muon beam at J-PARC and have already obtained results better than the current precision in zero-field measurements in a test experiment in March 2021. To further improve the precision, we plan to measure in a high magnetic field and incorporate a technique that can produce highly polarized muonic helium atom [3]. In this paper, we will report on these developments., EDP Sciences
EPJ Web of Conferences, 27 Apr. 2022

Erratum: Transverse asymmetry of γ rays from neutron-induced compound states of ¹⁴⁰La (Physical Review C (2020) 101 (064624) DOI: 10.1103/PhysRevC.101.064624)
T. Yamamoto; T. Okudaira; S. Endo; H. Fujioka; K. Hirota; T. Ino; K. Ishizaki; A. Kimura; M. Kitaguchi; J. Koga; S. Makise; Y. Niinomi; T. Oku; K. Sakai; T. Shima; H. M. Shimizu; S. Takada; Y. Tani; H. Yoshikawa; T. Yoshioka, We correct the sign of thetraverse asymmetry ALR in our previous paper The transverse asymmetry is derived from the correlation term snk? , where sn and k? are polarization of incident neutrons and momentum of emitted ? rays, respectively. The neutron polarization direction was determined using two measurements: (1) the measurement of the polarization direction of the circularly polarized laser which is used to polarize the 3He nuclei of the neutron polarizer, and (2) the measurement of the neutron polarization direction as it passes through the 3He neutron polarizer using a magnetic supermirror. However, in (1), the relation between the direction of the circular polarization and the spin of photons was misevaluated. Additionally, in (2), the relation between the neutron polarization direction reflected by the magnetic supermirror and the magnetic field applied to the magnetic supermirror was also misevaluated. Upon reevaluation we have deduced that the neutron polarization direction during the experiment was opposite to what was previously reported, and, hence, the sign of ALR should be reversed. As supporting evidence, the direction of the circular polarization of our laser system was obtained by measuring the electric paramagnetic resonance signal of Rb during laser pumping. The neutron polarization direction was also determined from the measurement of the parity violation at the 0.74-eV p-wave resonance of 139 La + n using our 3He neutron polarizer. These results also support that the neutron polarization direction was opposite to what was previously reported. Consequently, the transverse asymmetries for ? rays emitted in the transition from the 0.74-eV p-wave resonance to the ground state and inclusive ? rays are newly obtained as Agnd LR = - 0.60 ± 0.19 and Ainc LR = - 0.0045 ± 0.0080 , respectively. Similarly, Figs. 9, 11, 13, and 15 in the original paper should be replaced as Figs. 9, 11, 13, and 15 in this Erratum, respectively. The corrections do not affect results and conclusions of the original article. (Figure Presented).
Physical Review C, Mar. 2022

High Spatial Resolution Neutron Transmission Imaging Using a Superconducting Two-Dimensional Detector
Hiroaki Shishido; Kazuma Nishimura; The Dang Vu; Kazuya Aizawa; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Kazuhiko Soyama; Shigeyuki Miyajima; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Shuichi Kawamata; Takekazu Ishida, Institute of Electrical and Electronics Engineers (IEEE)
IEEE Transactions on Applied Superconductivity, Dec. 2021

Practical tests of neutron transmission imaging with a superconducting kinetic-inductance sensor
The Dang Vu; Hiroaki Shishido; Kazuya Aizawa; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Kazuhiko Soyama; Shigeyuki Miyajima; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Alex Malins; Masahiko Machida; Shuichi Kawamata; Takekazu Ishida, Elsevier BV
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Aug. 2021

Neutron Imaging for Intermetallic Alloy using a Delay Line Current-Biased Kinetic-Inductance Detector
Hiroaki Shishido; The Dang Vu; Kazuya Aizawa; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Kazuhiko Soyama; Shigeyuki Miyajima; Mutsuo Hidaka; Soh Y. Suzuki; Manobu M. Tanaka; Shuichi Kawamata; Takekazu Ishida, Abstract

The current-biased kinetic-inductance detector (CB-KID) is a solid-state superconducting neutron detector with high spatial and temporal resolutions, and multi-hit tolerance. We demonstrate high temperature operation of CB-KID at 7.9 K with the delay-line method. High temperature operation reduces imaging pixel size by suppressing signal propagation velocity. High spatial neutron transmission image for a mixed metal alloy consisting of heavy elements Sm and Sn is successfully constructed. We also examine the capability of element discrimination imaging based on the resonance dip analysis., IOP Publishing
Journal of Physics: Conference Series, 01 Jul. 2021

Polarization analysis for small-angle neutron scattering with a 3He spin filter at a pulsed neutron source
Takuya Okudaira; Yuki Ueda; Kosuke Hiroi; Ryuhei Motokawa; Yasuhiro Inamura; Shin-ichi Takata; Takayuki Oku; Jun-ichi Suzuki; Shingo Takahashi; Hitoshi Endo; Hiroki Iwase, Neutron polarization analysis (NPA) for small-angle neutron scattering (SANS) experiments using a pulsed neutron source was successfully achieved by applying a ³He spin filter as a spin analyzer for the neutrons scattered from the sample. The cell of the ³He spin filter gives a weak small-angle scattering intensity (background) and covers a sufficient solid angle for performing SANS experiments. The relaxation time of the ³He polarization is sufficient for continuous use for approximately 2 days, thus reaching the typical duration required for a complete set of SANS experiments. Although accurate evaluation of the incoherent neutron scattering, which is predominantly attributable to the extremely large incoherent scattering cross section of hydrogen atoms in samples, is difficult using calculations based on the sample elemental composition, the developed NPA approach with consideration of the influence of multiple neutron scattering enabled reliable decomposition of the SANS intensity distribution into the coherent and incoherent scattering components. To date, NPA has not been well established as a standard technique for SANS experiments at pulsed neutron sources such as the Japan Proton Accelerator Research Complex (J-PARC) and the US Spallation Neutron Source. It is anticipated that this work will contribute significantly to the accurate determination of the coherent neutron scattering component for scatterers in various types of organic sample systems in SANS experiments at J-PARC, particularly for systems involving competition between the coherent and incoherent scattering intensity., International Union of Crystallography (IUCr)
Journal of Applied Crystallography, 01 Apr. 2021

Study of Neutron–Nuclear Spin Correlation Term with a Polarized Xe Target
Kenji Sakai; Takayuki Oku; Takuya Okudaira; Tetsuya Kai; Masahide Harada; Kosuke Hiroi; Hirotoshi Hayashida; Kazuhisa Kakurai; Hirohiko M. Shimizu; Katsuya Hirota; Tomoki Yamamoto; Takashi Ino, Journal of the Physical Society of Japan
Proceedings of the 3rd J-PARC Symposium (J-PARC2019), 26 Mar. 2021

Homogeneity of neutron transmission imaging over a large sensitive area with a four-channel superconducting detector
THE DANG VU; Hiroaki Shishido; Kenji M Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Takayuki Oku; Kazuhiko Soyama; Kazuya Aizawa; Mutsuo Hidaka; Soh Y Suzuki; Manobu M. Tanaka; Alex Malins; Masahiko Machida; Takekazu Ishida, IOP Publishing
Superconductor Science and Technology, 19 Oct. 2020

Development of an in Situ 3He NSF Using SEOP Technique with an Evaluation System for the Pulsed Neutron Source
T. Okudaira; T. Oku; K. Sakai; T. Ino; H. Hayashida; K. Hiroi; T. Shinohara; K. Kakurai; K. Aizawa, Pleiades Publishing Ltd
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques, Oct. 2020

Development and application of a 3He Neutron Spin Filter at J-PARC
T. Okudaira; T. Oku; T. Ino; H. Hayashida; H. Kira; K. Sakai; K. Hiroi; S. Takahashi; K. Aizawa; H. Endo; S. Endo; M. Hino; K. Hirota; T. Honda; K. Ikeda; K. Kakurai; W. Kambara; M. Kitaguchi; T. Oda; H. Ohshita; T. Otomo; H.M. Shimizu; T. Shinohara; J. Suzuki; T. Yamamoto, Elsevier BV
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Oct. 2020

Energy-Resolved Neutron Imaging using a Delay Line Current-Biased Kinetic-Inductance Detector
Hiroaki Shishido; Kazuma Nishimura; The Dang Vu; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Kazuya Aizawa; Soh Y. Suzuki; Takekazu Ishida, IOP Publishing
Journal of Physics: Conference Series, Jul. 2020

Kinetic inductance neutron detector operated at near critical temperature
The Dang Vu; Kazuma Nishimura; Hiroaki Shishido; Masahide Harada; Kenichi Oikawa; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Kazuya Aizawa; Kenji M Kojima; Tomio Koyama; Alex Malins; Masahiko Machida; Takekazu Ishida, IOP Publishing
Journal of Physics: Conference Series, Jul. 2020

Transverse asymmetry of gamma rays from neutron -induced compound states of La-140
T. Yamamoto; T. Okudaira; S. Endo; H. Fujioka; K. Hirota; T. Ino; K. Ishizaki; A. Kimura; M. Kitaguchi; J. Koga; S. Makise; Y. Niinomi; T. Oku; K. Sakai; T. Shima; H. M. Shimizu; S. Takada; Y. Tani; H. Yoshikawa; T. Yoshioka, An sp-mixing model, which describes a compound nuclear reaction by mixing partial waves, predicts a correlation term in this reaction. A detailed study of the sp-mixing model is required to study the feasibility of a new type of time reversal symmetry violation search experiment. The correlation term sigma(n) center dot (k(n) x k(gamma)) in the La-139((n) over right arrow,gamma) reaction has been studied by measuring gamma-ray and neutron energies utilizing epithermal polarized neutrons and germanium detectors. The transverse asymmetry for single gamma-ray transition was measured to be 0.60 +/- 0.19 in the p-wave resonance., AMER PHYSICAL SOC
PHYSICAL REVIEW C, Jun. 2020

Experimental test of ³He neutron-spin filter in MIEZE spectrometer
H. Hayashida; M. Hino; H. Endo; T. Oku; T. Okudaira; K. Sakai; T. Oda, © Published under licence by IOP Publishing Ltd. A modulated intensity by zero effort (MIEZE) spectrometer is a type of neutron-resonance spin-echo spectrometer and can be used to analyze the slow dynamics of condensed matter by measuring the intermediate scattering function I(Q,τ). A crucial feature of a MIEZE spectrometer is it leaves completely free the space between the sample and the detector because the sample is placed after the neutron-spin analyzer. Measuring the magnetic dynamics with a conventional neutron-spin-echo spectrometer is difficult, but with a MIEZE spectrometer such a measurement may be done simply by introducing a second analyzer after the sample. Measuring the magnetic dynamics with high precision requires the background to be reduced to a minimum and is a job for which a 3He neutron-spin filter (3He-NSF) is a promising candidate as a second analyzer. However, one difficulty with this approach is the diffusion of 3He gas from the 3He-NSF, which may be measured and interpreted as dynamics. Therefore, we investigate herein whether the dynamics of gas diffusion is detected when using a 3He-NSF as second analyzer in a MIEZE spectrometer. Toward this end, we experimented with the MIEZE spectrometer installed at beamline 06 (BL06) at the Materials and Life Science Experimental Facility at Japan Proton Accelerator Research Complex (J-PARC MLF). The results confirm that the gas-diffusion dynamics of the 3He-NSF are not detected, and that the 3He-NSF, therefore, can be used as a second analyzer in this MIEZE spectrometer.
Journal of Physics: Conference Series, 11 Dec. 2019, [Reviewed]

Measurement of the angular distribution of γ-rays after neutron capture by 139La for a T-violation search
Takuya Okudaira; Hirohiko M. Shimizu; Masaaki Kitaguchi; Katsuya Hirota; Christopher C. Haddock; Ikuya Ito; Tomoki Yamamoto; Shunsuke Endo; Kohei Ishizaki; Takumi Sato; Shusuke Takada; Jun Koga; Tamaki Yoshioka; Takashi Ino; Kouichiro Asahi; Takamasa Momose; Takahiro Iwata; Takayuki Oku; Kenji Sakai; Atsushi Kimura; Taro Nakao; Masanori Hino; Tatsushi Shima; Yutaka Yamagata, EDP Sciences
EPJ Web of Conferences, Dec. 2019, [Reviewed]

Energy-resolved neutron imaging with high spatial resolution using a superconducting delay-line kinetic inductance detector
Yuki Iizawa; Hiroaki Shishido; Kazuma Nishimura; The Dang Vu; Kenji M Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Kazuya Aizawa; Soh Y Suzuki; Takekazu Ishida, Neutron imaging is one of the key technologies for non-destructive

transmission testing. Recent progress in the development of intensive neutron sources

allows us to perform energy-resolved neutron imaging with high spatial resolution.

Substantial efforts have been devoted to developing a high spatial and temporal

resolution neutron imager. We have been developing a neutron imager aiming at

conducting high spatial and temporal resolution imaging based on a delay-line neutron

detector, called the current-biased kinetic-inductance detector, with a conversion layer

10B. The detector allowed us to obtain a neutron transmission image with four signal

readout lines. Herein, we expanded the sensor active area, and improved the spatial

resolution of the detector. We examined the capability of high spatial resolution

neutron imaging over the sensor active area of 15 × 15 mm2

for various samples,including biological and metal ones. We also demonstrated an energy-resolved neutron

image in which stainless-steel specimens were discriminating of other specimens with

the aid of the Bragg edge transmission.
Superconductor Science and Technology, Oct. 2019, [Reviewed]

Temperature dependent characteristics of neutron signals from a current-biased Nb nanowire detector with 10 B converter
Vu The Dang; Yuki Iizawa; Kazuma Nishimura; Hiroaki Shishido; Kenji M Kojima; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Kazuya Aizawa; Tomio Koyama; Takekazu Ishida, We are developing a new type of the neutron imager based on a superconducting

neutron detector. We previously succeeded in constructing and demonstrating neutron detection

capability of a superconducting current-biased kinetic inductance detector (CB-KID). In order

to improve the spatial resolution and detection efficiency, the characteristics of a

superconducting neutron detector have been studied systematically in the present work. As an

extension of studying the characteristics of neutron detector, we investigated temperature

dependence of neutron signal such as propagation velocity and the signal amplitude as a function

of time of flight (ToF) with temperature. We consider that it is important to understand the

temperature dependence of the signal to improve the spatial resolution and detection efficiency

of a superconducting neutron detector.
Journal of Physics Conference Series, Sep. 2019, [Reviewed]

Highlight of recent sample environment at J-PARC MLF
Seiko Ohira-Kawamura; Takanori Hattori; Stefanus Harjo; Kazutaka Ikeda; Noboru Miyata; Tsukasa Miyazaki; Hiroyuki Aoki; Masao Watanabe; Yoshifumi Sakaguchi; Takayuki Oku
Neutron News, 02 Jan. 2019, [Reviewed]

Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search
Tomoki Yamamoto; Hirohiko M. Shimizu; Masaaki Kitaguchi; Katsuya Hirota; Christopher C. Haddock; Shunsuke Endo; Kohei Ishizaki; Takumi Sato; Shusuke Takada; Jun Koga; Tamaki Yoshioka; Takashi Ino; Koichiro Asahi; Takamasa Momose; Takahiro Iwata; Kenji Sakai; Takuya Okudaira; Takayuki Oku; Atsushi Kimura; Masahiro Hino; Tatsushi Shima; Yutaka Yamagata, We performed a polarized neutron transmission asymmetry measurement utilizing the 139La(n,γ)140La reaction. This measurement involved the use of a recently developed 3He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting value of the longitudinal asymmetry AL = (11.7 ± 1.1)% was found to be in good agreement with existing values in the literature suggesting that the method by which we polarize the neutron beam is not a significant source of uncertainty. This preliminary work represents a first step toward future measurements of the angular correlation in (n̅,Υ) reactions necessary in the search for enhanced T-Violation in compound nuclei., {EDP} Sciences
EPJ Web of Conferences, 2019, [Reviewed]

Verification of the compound nuclear model for T-violation search
T. Yamamoto; H. M. Shimizu; K. Ishizaki; Y. Niinomi; M. Kitaguchi; S. Takada; J. Koga; S. Makise; T. Yoshioka; A. Kimura; K. Sakai; T. Oku; T. Okudaira; S. Endo; Y. Tani; H. Fujioka; H. Yoshikawa; K. Hirota; T. Shima, Large sources of parity violation have been observed in compound nuclear reactions. These enhancements are described by the compound nuclear model, which can be used to describe the angular correlation of γ-rays produced in (n; γ) reactions in medium-heavy nuclei. It has also been suggested that these same reactions could lead to a similar enhancement in time reversal violating processes. Therefore, we are interested in verifying the compound nuclear model by studying the (n; γ) reaction using polarized neutrons. In this paper, we discuss the installation and characterization of a neutron polarizer used in the (n; γ) measurement with transversely polarized neutrons.
Proceedings of Science, 2019

Development of the neutron polarizer for the T-violation search using compound nuclei
T. Okudaira; T. Oku; K. Sakai; T. Ino; H. Hayashida; K. Hiroi; T. Shinohara; K. Kakurai; K. Aizawa; H. M. Shimizu; M. Kitaguchi; T. Yamamoto, © Copyright owned by the author(s). The fundamental parity violation is enhanced by 106 times at maximum in several neutron induced compound nuclei. There is a theoretical prediction that fundamental T-violating effects can be also largely enhanced in compound nuclei implying that T-violation can be searched for by making very sensitive measurements. A T-violation search experiment using compound nuclei is planned at J-PARC. Polarized epithermal neutron beam, polarized nuclear target, and high count rate neutron detector are necessary for the experiment, and therefore a development of the neutron polarizer using polarized 3He is ongoing at J-PARC in JAEA. Recently, a clean vacuum system to fabricate 3He spin filters was constructed, and several 3He spin filters were fabricated. The current status of the development of the 3He spin filter was reported.
Proceedings of Science, 2019, [Reviewed]

Cryogenic sample environments shared at the MLF, J-PARC
Seiko Ohira-Kawamura; Ryuta Takahashi; Motoyuki Ishikado; Yasuhiro Yamauchi; Masatoshi Nakamura; Keiichi Ohuchi; Hiroshi Kira; Wataru Kambara; Kazuhiro Aoyama; Yoshifumi Sakaguchi; Masao Watanabe; Takayuki Oku, © 2019 - IOS Press and the authors. All rights reserved. We present the status of the low-temperature devices shared by several neutron instruments of the Materials and Life Science Experimental Facility (MLF), J-PARC. In recent years, the Cryogenics and Magnets group of the Sample Environment (SE) team has introduced three cryostats at the MLF: a top-loading 4He cryostat, a bottom-loading 3He cryostat, and a 3He-4He dilution refrigerator insert. The group also manages a superconducting magnet which entered into service in 2012. Progress has been made with these SE, including the development of a new system for controlling the 3He cryostat and an oscillating radial collimator for using efficiently the superconducting magnet. These innovations have significantly increased the frequency with which these cryostats and magnet are used. During the last Japanese fiscal year, some of them were used approximately half of the total number of days of beam operation.
Journal of Neutron Research, 2019, [Reviewed]

Measurement of Angular Distributions in 139La(n,γ) Reaction for T violation Search
T. Okudaira; H; M. Shimizu; M. Kitaguchi; K. Hirota; C. C. Haddock; N. Oi; I. Ito; T. Yamamoto; S. Endo; S. Takada; J. Koga; T. Yoshioka; T. Ino; K. Asahi; T. Momose; T. Iwata; K. Sakai; T. Oku; A. Kimura; M. Hino; T. Shima; Y. Yamagata
JPS Conference Proceedings, Nov. 2018, [Reviewed]

High-Speed Neutron Imaging Using a Current-Biased Delay-Line Detector of Kinetic Inductance
Hiroaki Shishido; Yuya Miki; Hiroyuki Yamaguchi; Yuki Iizawa; Vu The Dang; Kenji M. Kojima; Tomio Koyama; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Soh Y. Suzuki; Takekazu Ishida, © 2018 American Physical Society. We demonstrate the development of a high-speed neutron-imaging system via a solid-state superconducting detector. Our developed system, a current-biased kinetic-inductance detector (CBKID), operates in a delay-line mode to identify the position of a local hot spot in terms of four different arrival time stamps at the ends of the delay lines. Our detector comprises X and Y superconducting Nb meander lines, which are fed by a weak dc current, and a B10 conversion layer, which converts a neutron into two charged particles. The high-energy light ions (He4 or Li7) in the B10(n,α)7Li reaction are able to create two hot spots simultaneously in the X and Y meanders. A pair of electromagnetic-wave pulses are generated at the hot spot and signals of different polarities start propagating on each of the X and Y meanders toward the ends. The position of the original hot spot is determined by the difference in arrival time of the two pulses at the two ends. To measure the arrival times of the pulse signals, we developed a set of analog signal discriminators from the preset threshold levels using a time-to-digital converter (TDC), which is able to record the timing of the propagated pulses with 1-ns resolution over a time frame of 4.2 s. We successfully reconstructed the neutron image of a test pattern with a spatial resolution of 22 μm and a detection rate tolerance of a few 10 MHz/cm2., AMER PHYSICAL SOC
Physical Review Applied, 17 Oct. 2018

Physical characteristics of delay-line current-biased kinetic inductance detector
Yuki Iizawa; Hiroyuki Yamaguchi; Yuya Miki; Kazuma Nishimura; Hiroaki Shishido; Kenji M. Kojima; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Tomio Koyama; Takekazu Ishida, © Published under licence by IOP Publishing Ltd. Our preceding works reported the development of a high spatial and temporal resolution imaging system by using a current biased kinetic inductance detector (CB-KID) with the use of a delay-line technique. We called this system as a delay-line CB-KID, and succeeded in imaging of neutron events caused by the nuclear reaction and hot spots produced by using the delay-line CB-KID system. It was essentially important for our proposal to use a superconducting stripline to guide the pulsed signal where the signal propagates at a constant fast velocity along the stripline. In the present study, we intend to measure a propagation velocity of the signal along the stripline precisely to compare with the theoretical prediction of the signal propagation, which was recently developed with a superconducting waveguide S-I-S model by Koyama and Ishida [11]. Our present measurements showed a good agreement between the theoretical predictions and the experimental results on the propagation velocity as a function of temperature.
Journal of Physics: Conference Series, 26 Jul. 2018

Neutron signal features of Nb-based kinetic inductance detector with ¹⁰ B convertor
Yuya Miki; Hiroyuki Yamaguchi; Yuki Iizawa; Hiroaki Shishido; Kenji M. Kojima; Kenichi Oikawa; Masahide Harada; Shigeyuki Miyajima; Mutsuo Hidaka; Takayuki Oku; Kazuhiko Soyama; Takekazu Ishida, © Published under licence by IOP Publishing Ltd. In our preceding works, we demonstrated successful neutron detection using a superconducting current-biased kinetic inductance detector (CB-KID), which is composed of two Nb-based superconducting meanderlines and the 10 B neutron absorption layer. The CB-KID with a 10 B absorption layer outputs the voltage pulses when it is irradiated by pulsed neutrons. We expected that the voltage V is proportional to a product of the bias current I b and a time derivative of the local kinetic inductance dΔL k /dt, and a pair of signals propagate along the Nb stripline as an electromagnetic wave at a certain fraction of the light velocity c toward end electrodes. It still remains to be revealed why the signal voltage shows such a continuum in the histogram of the signal height even if the incident energy of the light ion is apparently monochromatic. In the present work, we investigated the distribution of the height and width of the signal. We found a clear correlation between height and width, which might be a key of understanding the operating principle of our detector. We consider that the origin of the signal distribution is due to the positional dependence of the light ion bombardment with respect to the meandering Nb nanowire.
Journal of Physics: Conference Series, 26 Jul. 2018

The development of polarized target for T-Violation search in a compound nucleus
Ishizaki Kohei; Yoshioka Tamaki; Ino Takashi; Haddock Christopher; Asahi Koichiro; Momose Takamasa; Iwata Takahiro; Sakai Kenji; Kimura Atsushi; Okudaira Takuya; Oku Takayuki; Shimizu Hirohiko M.; Hino Masahiro; Shima Tatsushi; Yamagata Yutaka; Kitaguchi Masaaki; Hirota Katsuya; Yamamoto Tomoki; Endo Shunsuke; Sato Takumi; Takada Shusuke; Koga Jun, The Physical Society of Japan
Meeting Abstracts of the Physical Society of Japan, 2018

The International Conference on Neutron Optics (NOP2017) in Nara
Yoshiaki Kiyanagi; Kazuhisa Kakurai; Hirohiko Shimizu; Masaaki Kitaguchi; Takayuki Oku, Taylor and Francis Inc.
Neutron News, 02 Oct. 2017, [Reviewed]

Neutron detection using the superconducting Nb-based current-biased kinetic inductance detector
Hiroaki Shishido; Hiroyuki Yamaguchi; Yuya Miki; Shigeyuki Miyajima; Kenichi Oikawa; Masahide Harada; Mutsuo Hidaka; Takayuki Oku; Masatoshi Arai; Akira Fujimaki; Takekazu Ishida, We demonstrate neutron detection using a solid-state He-3-free superconducting current-biased kinetic inductance detector (CB-KID), which consists of a superconducting Nb meander line and B-10 neutron absorption layer. The CB-KID is based on the transient process of kinetic inductance of Cooper pairs induced by the nuclear reaction between B-10 and neutrons. Therefore, the CB-KID can be operated in a wide superconducting region in the bias current-temperature diagram, as demonstrated in this paper. The transient change of the kinetic inductance induces the electromagnetic wave pulse under a DC bias current. The signal propagates along the meander line toward both sides with opposite polarity, where the signal polarity is dominated by the bias current direction. The full width at half maximum of the signals remains on the order of a few tens of ns, which confirms the high-speed operation of our detectors. We determine the neutron incident position within 1.3 mm accuracy in one dimension using the multichannel CB-KIDs., IOP PUBLISHING LTD
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, Sep. 2017, [Reviewed]

Developments of high count rate neutron detector for T-Violation search
Endo Shunsuke; Takada Shusuke; Koga Jun; Yoshioka Tamaki; Ino Takashi; Asahi Koichiro; Momose Takamasa; Iwata Takahiro; Sakai Kenji; Oku Takayuki; Kimura Atsushi; Shimizu Hirohiko M.; Hino Masahiro; Shima Tatsushi; Yamagata Yutaka; Kitaguchi Masaaki; Hirota Katsuya; Okudaira Takuya; Oi Noriko; Ito Ikuya; Yamamoto Tomoki; Haddock Christopher, The Physical Society of Japan
Meeting Abstracts of the Physical Society of Japan, Jan. 2017

Development of an in-situ SEOP ³He Neutron Spin Filter for Magnetic Imaging Techniques
H. Hayashida; K. Hiroi; T. Oku; H. Kira; K. Sakai; T. Shinohara; T. Kai; J. D. Parker; Y. Matsumoto; S. Y. Zhang; T. Ino; M. Ohkawara; K. Kakurai, We have been developing a 3He neutron spin filter (NSF) using a spin exchange optical pumping (SEOP) technique. The 3He NSF provides a high-energy polarized neutron beam with large beam size. A high-energy polarized neutron beam, which is more difficult to produce with commonly used magnetic supermirror-based polarizers, is an effective probe for magnetic imaging techniques, particularly in the case of strong magnetic fields. Additionally, an in-situ SEOP system enables us to produce a polarized neutron beam with stable polarization, which is big advantage for experiments with long measurement times. In this study, we installed two in-situ SEOP systems as a neutron spin polarizer and analyzer providing a stable high-energy polarized neutron beam over several days.
Physics Procedia, 2017, [Reviewed]

Neutron flux spectrum revealed by Nb-based current-biased kinetic inductance detector with a B-10 conversion layer
Shigeyuki Miyajima; Hiroaki Shishido; Yoshito Narukami; Naohito Yoshioka; Akira Fujimaki; Mutsuo Hidaka; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Masatoshi Arai; Takekazu Ishida, We successfully derived the time-dependent flux of pulsed neutrons using a superconducting Nb-based current-biased kinetic inductance detector (CB-KID) with a B-10 conversion layer at Japan Proton Accelerator Research Complex. Our CB-KID is a meander line made of a 40-nm-thick Nb thin film with 1 - mu m line width, which is covered with a 150-nm-thick B-10 conversion layer. The detector works at a temperature below 4 K. The evaluated detection efficiency of the CB-KID in this experiment is 0.23% at the neutron energy of 25.4 meV. The time-dependent flux spectra of pulsed neutrons thus obtained are in good agreement with the results obtained by the Monte Carlo simulations., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jan. 2017, [Reviewed]

Sample environment at the J-PARC MLF
S. Ohira-Kawamura; T. Oku; M. Watanabe; R. Takahashi; K. Munakata; S. Takata; Y. Sakaguchi; M. Ishikado; K. Ohuchi; T. Hattori; H. Kira; K. Sakai; T. Aso; Y. Yamauchi; S. Isomae, © 2017 - IOS Press and the authors. All rights reserved. At the Materials and Life Science Experimental Facility in the Japan Proton Accelerator Research Complex, a total of 14 members have participated in the Sample Environment (SE) team since April 2016, including members of the newly joined 3He Neutron Spin Filter Group. The SE equipment commonly used at the beamlines has been prepared by the SE team, while each beamline has prepared some devices that can be adapted to the instrument's own characteristics and, as such, be useful for the research fields that have been promoted at the beamlines. In addition to existing devices, the SE team has recently introduced new environments, such as a pulsed magnet, a light irradiation system, and a neutron spin filter. In 2015, a new building, the J-PARC Research Building, was inaugurated. This building includes a number of specialized laboratories for sample preparation, sample characterization, SE commissioning, biological and chemical deuteration, development of neutron optical devices and so on.
Journal of Neutron Research, 2017, [Reviewed]

Development of a polarized He-3 neutron spin filter for POLANO at J-PARC
T. Ino; M. Ohkawara; K. Ohoyama; T. Yokoo; S. Itoh; Y. Nambu; M. Fujita; H. Kira; H. Hayashida; K. Hiroi; K. Sakai; T. Oku; K. Kakurai, We have developed a polarized He-3 neutron spin filter (NSF) for a new polarized neutron spectrometer, POLANO, at the Japan Proton Accelerator Research Complex (J-PARC). POLANO aims to utilize high energy neutrons polarized by a He-3 NSF and spin analyzed by an array of magnetic supermirrors for inelastic neutron scattering. The He-3 gas is continuously polarized in-situ by spin-exchange optical pumping to provide a highly and stably polarized neutron beam. The POLANO He-3 NSF is designed to polarize neutrons with energies as high as 200 meV and fit in a restricted space. It is equipped with adiabatic fast passage NMR that enables one to flip the He-3 spins, and consequently, the neutron spins., IOP PUBLISHING LTD
INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS FOR CONDENSED MATTER INVESTIGATIONS (PNCMI 2016), 2017, [Reviewed]

Development of an in-situ SEOP He-3 neutron spin filter for magnetic imaging techniques
H. Hayashida; K. Hiroi; T. Oku; H. Kira; K. Sakai; T. Shinohara; T. Kai; J. D. Parker; Y. Matsumoto; S. Y. Zhang; T. Ino; M. Ohkawara; K. Kakurai, We have been developing a He-3 neutron spin filter (NSF) using a spin exchange optical pumping (SEOP) technique. The He-3 NSF provides a high-energy polarized neutron beam with large beam size. A high-energy polarized neutron beam, which is more difficult to produce with commonly used magnetic supermirror-based polarizers, is an effective probe for magnetic imaging techniques, particularly in the case of strong magnetic fields. Additionally, an in-situ SEOP system enables us to produce a polarized neutron beam with stable polarization, which is big advantage for experiments with long measurement times. In this study, we installed two in-situ SEOP systems as a neutron spin polarizer and analyzer providing a stable high-energy polarized neutron beam over several days. (C) 2017 Published by Elsevier B.V., ELSEVIER SCIENCE BV
NEUTRON IMAGING FOR APPLICATIONS IN INDUSTRY AND SCIENCE, 2017, [Reviewed]

Non-magnetic flexible heaters for spin-exchange optical pumping of ³He and other applications
T. Ino; H. Hayashida; H. Kira; T. Oku; K. Sakai, © 2016 Author(s). Spin polarized 3He gas is currently widely used in various scientific fields and in medical diagnosis applications. The spin polarization of 3He nuclei can be achieved by spin-exchange optical pumping (SEOP). In SEOP, the 3He gas is enclosed in a glass cell together with alkali metals and is then heated to maintain the alkali metal vapor pressures at the appropriate levels. However, polarized 3He gas is highly sensitive to any inhomogeneity in its magnetic field, and any small field gradients caused by the heaters may cause degradation of the 3He polarization. To overcome this conflict between the heating process and the magnetic field, we have developed electrical heaters that essentially cause no magnetic fields. These heaters are thin and are flexible enough to be bent to within a radius of a few centimeters. These carefully designed heater elements and a double layer structure effectively eliminate magnetic field generation. The heaters were originally developed for SEOP applications, but can also be applied to other processes that need to avoid unwanted magnetic fields.
Review of Scientific Instruments, 01 Nov. 2016, [Reviewed]

Development of a neutron imager based on superconducting detectors
Shigeyuki Miyajima; Hiroyuki Yamaguchi; Hirotaka Nakayama; Hiroaki Shishido; Akira Fujimaki; Mutsuo Hidaka; Masahide Harada; Kenichi Oikawa; Takayuki Oku; Masatoshi Arai; Takekazu Ishida, We succeeded in demonstrating a neutron detector based on a Nb superconducting meander line with a B-10 conversion layer for a neutron imager based on superconductor devices. We use a current-biased kinetic inductance detector (CB-KID), which is composed of a meander line, for detection of a neutron with high spatial resolution and fast response time. The thickness of Nb meander lines is 40 nm and the line width is narrower than 3 mu m. The area of 8 mm x 8 mm is covered by CB-KIDs, which are assembled at the center of the Si chip of the size 22 mm x 22 mm. The Nb CB-KIDs with a B-10 conversion layer output the voltage by irradiating pulsed neutrons. We have investigated gamma/n discrimination of a Nb-based CB-KID with B-10 conversion layer using a Cd plate, which indicates that a CB-KID can operate as a neutron detector under the strong gamma-ray fields. (C) 2016 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Nov. 2016, [Reviewed]

19aAF-1 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) VII
Shishido H.; Yamaguchi H.; Miki Y.; Miyajima S.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Kojima K.; Ishida T., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2016

19aAF-2 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) VIII
Ishida T.; Shishido H.; Yamaguchi H.; Miki Y.; Miyajima S.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Kojima K., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2016

Signal Transmission Time Method for Neutron Imaging by usuing Superconducting neutron detector I
Miki Y.; Yamaguchi H.; Shishido H.; Kojima K.; Miyajima S.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T.,

我々のグループでは、4系統の信号リード線と4系統の読出し回路を用いた新しいイメージング手法を提案した。極めて簡便な手法で、超高速、大画素の中性子イメージングを可能とする手法として期待されている。講演では、測定原理や原理検証実験の内容を中心に解説する。

, The Physical Society of Japan
Meeting Abstracts of the Physical Society of Japan, 2016

Novel imaging technique by means of signal tranmission time using Superconducting stripline detector
Yamaguchi Hiroyuki; Miki Y.; Shishido H.; Kojima K.; Miyajima S.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T.,

我々のグループでは、4系統の信号リード線と4系統の読出し回路を用いた新しいイメージング手法を提案した。極めて簡便な手法で、超高速、大画素のイメージングを可能とする手法として期待される。また、対象は中性子には限られない。 講演では、パルスレーザーを使って励起した場合のイメージングの実例について紹介する。

, The Physical Society of Japan
Meeting Abstracts of the Physical Society of Japan, 2016

Polarisation Analysis Neutron Spectrometer, POLANO, at J-PARC- Concept and Magnetic Field Optimisation
K. Ohoyama; T. Yokoo; S. Itoh; M. Nanbu; K. Iwasa; M. Ohkawara; N. Kaneko; T. Ino; H. Hayashida; T. Oku; H. Kira; S. Tasaki; M. Takeda; H. Kimura; T. J. Sato, The status of the polarised neutron spectrometer constructed at the Japan Proton Accelerator Research Complex through a collaboration between Tohoku University and KEK will be reported. In particular, the optimisation of magnetic fields to minimise neutron beam depolarisation using the finite element method will be discussed on the basis of several simulations using the finite element method.., IOP PUBLISHING LTD
INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS FOR CONDENSED MATTER INVESTIGATIONS (PNCMI 2014), 2016, [Reviewed]

Development of a He-3 nuclear spin flip system on an in-situ SEOP He-3 spin filter and demonstration for a neutron reflectometer and magnetic imaging technique
H. Hayashida; T. Oku; H. Kira; K. Sakai; K. Hiroi; T. Ino; T. Shinohara; T. Imagawa; M. Ohkawara; K. Ohoyama; K. Kakurai; M. Takeda; D. Yamazaki; K. Oikawa; M. Harada; N. Miyata; K. Akutsu; M. Mizusawa; J. D. Parker; Y. Matsumoto; S. Zhang; J. Suzuki; K. Soyama; K. Aizawa; M. Arai, We have been developing a He-3 neutron spin filter (NSF) using the spin exchange optical pumping (SEOP) technique. The He-3 NSF provides a high-energy polarized neutron beam with large beam size. Moreover the He-3 NSF can work as pi-flipper for a polarized neutron beam by flipping the He-3 nuclear spin using a nuclear magnetic resonance (NMR) technique. For NMR with the in-situ SEOP technique, the polarization of the laser must be reversed simultaneously because a non-reversed laser reduces the polarization of the spin-flipped He-3. To change the polarity of the laser, a half-wavelength plate was installed. The rotation angle of the half-wavelength plate was optimized, and a polarization of 97 % was obtained for the circularly polarized laser. The He-3 polarization reached 70 % and was stable over one week. A demonstration of the He-3 nuclear spin flip system was performed at the polarized neutron reflectometer SHARAKU (BL17) and NOBORU (BL10) at J-PARC. Off-specular measurement from a magnetic Fe/Cr thin film and magnetic imaging of a magnetic steel sheet were performed at BL17 and BL10, respectively., IOP PUBLISHING LTD
INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS FOR CONDENSED MATTER INVESTIGATIONS (PNCMI 2014), 2016, [Reviewed]

Conceptual design of a polarized He-3 neutron spin filter for polarized neutron spectrometer POLANO at J-PARC
T. Ino; K. Ohoyama; T. Yokoo; S. Itoh; M. Ohkawara; H. Kira; H. Hayashida; K. Sakai; K. Hiroi; T. Oku; K. Kakurai; L. J. Chang, A He-3 neutron spin filter (NSF) has been designed for a new polarized neutron chopper spectrometer called the Polarization Analysis Neutron Spectrometer with Correlation Method (POLANO) at the Materials and Life Science Experimental Facility of the Japan Proton Accelerator Research Complex. It is designed to fit in a limited space on the spectrometer as an initial neutron beam polarizer and is polarized in situ by spin exchange optical pumping. This will be the first generation He-3 NSF on POLANO, and a polarized neutron beam up to 100 meV with a diameter of 50 mm will be available for research on magnetism, hydrogen materials, and strongly correlated electron systems., IOP PUBLISHING LTD
INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS FOR CONDENSED MATTER INVESTIGATIONS (PNCMI 2014), 2016, [Reviewed]

Neutron detection using a current biased kinetic inductance detector
Hiroaki Shishido; Shigeyuki Miyajima; Yoshito Narukami; Kenichi Oikawa; Masahide Harada; Takayuki Oku; Masatoshi Arai; Mutsuo Hidaka; Akira Fujimaki; Takekazu Ishida, We demonstrate neutron detection using a solid state superconducting current biased kinetic inductance detector (CB-KID), which consists of a superconducting Nb meander line of 1 mu m width and 40 nm thickness. B-10-enriched neutron absorber layer of 150 nm thickness is placed on top of the CB-KID. Our neutron detectors are able to operate in a wide superconducting region in the bias current-temperature diagram. This is in sharp contrast with our preceding current-biased transition edge detector, which can operate only in a narrow range just below the superconducting critical temperature. The full width at half maximum of the signals remains of the order of a few tens of ns, which confirms the high speed operation of our detectors. (C) 2015 AIP Publishing LLC., AMER INST PHYSICS
APPLIED PHYSICS LETTERS, Dec. 2015, [Reviewed]

Signal from a Single Neutron by using Current-Biased Kinetic Inductance Detector made of Superconducting Nb Nanowire
Narukami Yoshito; Miyajima Shigeyuki; Shishido Hiroaki; Fujimaki Akira; Hidaka Mutsuo; Oikawa Kenichi; Harada Masahide; Oku Takayuki; Arai Masatoshi; Ishida Takekazu
Proceedings of the 2nd International Symposium on Science at J-PARC—Unlocking the Mysteries of Life, Matter and the Universe—, Oct. 2015, [Reviewed]

Time-Dependent Flux from Pulsed Neutrons Revealed by Superconducting Nb Current-Biased Kinetic Inductance Detector with 10B Converter Operated at 4 K
Miyajima Shigeyuki; Narukami Yoshito; Shishido Hiroaki; Yoshioka Naohito; Fujimaki Akira; Hidaka Mutsuo; Oikawa Kenichi; Harada Masahide; Oku Takayuki; Arai Masatoshi; others
Proceedings of the 2nd International Symposium on Science at J-PARC—Unlocking the Mysteries of Life, Matter and the Universe—, Oct. 2015, [Reviewed]

Development status of the NMR system for the polarized $^{3}$He Neutron Spin Filter (NSF) in the MLF at J-PARC
Sakai, Kenji; Oku, Takayuki; Hayashida, Hirotoshi; Kira, Hiroshi; Hiroi, Kosuke; Ino, Takashi; Oyama, Kenji; Okawara, Manabu; Kakurai, Kazuhisa; Shinohara, Takenao; Oikawa, Kenichi; Harada, Masahide; Aizawa, Kazuya; Arai, Masatoshi; Sakaguchi, Yoshifumi; Suzuki, Junichi, The polarized $^{3}$He filter, which polarizes neutrons due to a large neutron absorption cross section of $^{3}$He with strong spin selectivity, becomes a convenient neutron spin filter (NSF) because it is operated immediately after its installation in beam lines without any neutron beam adjustments. For realizing such the NSF, a nuclear magnetic resonance (NMR) system is indispensable for monitoring $^{3}$He nuclear spin polarization {\it P} of the NSF. We have developed the flexible NMR system based on adiabatic fast passage (AFP) and pulse NMR methods by using their complementary features. In comparing with the values of {\it P} obtained by neutron transmission measurement at the beam line 10 of the J-PARC, we measured the correlations between the AFP and pulse NMR signals as changing condition of temperature, amplitude and applying period of the radio frequency field for the pulse NMR, and so on. As the results, we confirmed that our system would function enough as the {\it P} monitor., Journal of the Physical Society of Japan
JPS Conference Proceedings (Internet), Sep. 2015, [Reviewed]

18aPS-64 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) VI
Nakayama H.; Yamaguchi H.; Narukami Y.; Shishido H.; Miyajima S.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Kojima K.; Ishida T., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2015

24pCJ-2 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) V
Yamaguchi H.; Nakayama H.; Narukami Y.; Miyajima S.; Shishido H.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2015

24pCJ-1 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) IV
Narukami Y.; Shishido H.; Miyajima S.; Yamaguchi H.; Nakayama H.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T., The Physical Society of Japan (JPS)
Meeting Abstracts of the Physical Society of Japan, 2015

Improvement of 3He nuclear polarization for neutron scattering　　　　　　　　　　　　　　　
Takashi Ino; Yasushi Arimoto; Hiroshi Kira; Hirotoshi Hayashida; Yoshifumi Sakaguchi; Manabu Ohkawara; Kenji Ohoyama; Kenji Sakai; Kosuke Hiroi; Takayuki Oku; Kazuhisa Kakurai
JPS Conf. Proc., 2015, [Reviewed]

The design and q resolution of the small and wide angle neutron scattering instrument (TAIKAN) in J-PARC　　　　　　　　　　　　　　　
S. Takata; J. Suzuki; T. Shinohara; T. Oku; T. Tominaga; K. Ohishi; H. Iwase; T. Nakatani; Y. Inamura; T. Ito; K. Suzuya; K. Aizawa; M. Arai; T. Otomo; M. Sugiyama
JPS Conf. Proc., 2015, [Reviewed]

Demonstration Study of Small-Angle Polarized Neutron Scattering Using Polarized 3He Neutron Spin Filter
H. Kira; H. Hayashida; H. Iwase; K. Ohishi; J. Suzuki; T. Oku; K. Sakai; K. Hiroi; S. Takata; T. Ino; K. Ohoyama; M. Ohkawara; T. Shinohara; K. Kakurai; K. Aizawa; M. Arai, Journal of the Physical Society of Japan
JPS Conf. Proc., 2015, [Reviewed]

Polarized neutron spectrometer for inelastic experiments at J-PARC Status of POLANO Project
Tetsuya Yokoo; Kenji Ohoyama; Shinichi Itoh; Kazuaki Iwasa; Naokatsu Kaneko; Junichi Suzuki; Manabu Ohkawara; Kazuya Aizawa; Seiji Tasaki; Takashi Ino; Kaoru Taketani; Shigeru Ishimoto; Masayasu Takeda; Takayuki Oku; Hiroshi Kira; Kouichi Hayashi; Hiroyuki Kimura; Taku J. Sato, Construction of the newly developed polarization analysis neutron chopper spectrometer (POLANO) commenced in the Japan Proton Accelerator Research Complex (J-PARC), Materials and Life Science Experimental Facility (MLF). The POLANO is a direct geometry chopper spectrometer with neutron polarization analysis capability. In the suite of inelastic spectrometers, six instruments are now in operation. POLANO will be the only spectrometer dedicated to polarization analysis experiments. The primary phase of the construction will be completed by 2014 with beam commissioning scheduled for 2015., E D P SCIENCES
QENS/WINS 2014 - 11TH INTERNATIONAL CONFERENCE ON QUASIELASTIC NEUTRON SCATTERING AND 6TH INTERNATIONAL WORKSHOP ON INELASTIC NEUTRON SPECTROMETERS, 2015, [Reviewed]

Current-Biased Kinetic Inductance Detector for Neutrons
Hiroaki Shishido; Shigeyuki Miyajima; Hiroyuki Yamaguchi; Hirotaka Nakayama; Yoshito Narukami; Akira Fujimaki; Mutsuo Hidaka; Ken'ichi Oikawa; Masahide Harada; Takayuki Oku; Masatoshi Arai; Takekazu Ishida, We succeeded in measuring a clear signal from a single neutron by using a solid state superconducting current biased kinetic inductance detector, which consists of a superconducting Nb meanderline and an enriched B-10 neutron conversion layer. Our neutron detector is able to operate at temperatures much lower than T-c. A full width at half maximum of signal remains at a few tens ns, ensuring fast operation as a neutron detector. A time-dependent histogram for the pulsed neutron intensity is in good agreement with the prediction from a Monte-Carlo simulation. We convincingly conclude that our detector was successful in detecting pulsed neutrons produced from the beam line BL10 at J-PARC., IEEE
2015 15TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE (ISEC), 2015, [Reviewed]

Development of ³He Neutron Spin Filter for the Application at an Intense Pulsed Neutron Source Facility
Takayuki Oku; Hiroshi Kira; Hirotoshi Hayashida; Kenji Sakai; Kosuke Hiroi; Takenao Shinohara; Takashi Ino; Manabu Ohkawara; Kenji Ohoyama; Shin-ichi Takata; Kazuki Ohishi; Hiroki Iwase; Noboru Miyata; Kazuhiro Akutsu; Yoshifumi Sakaguchi; Masayasu Takeda; Jun-ichi Suzuki; Kazuya Aizawa; Masatoshi Arai; Kazuhisa Kakurai, The Japanese Society for Neutron Science
hamon, 2014

SANS study on double-network polymers　　　　　　　　　　　　　　　
T. Tominaga; S. Takata; J. Suzuki; T. Shinohara; T. Oku; K. Ohishi; T. Nakatani; Y. Inamura; H. Iwase; T. Ito; H. Kira; K. Suzuya; K. Aizawa; M. Arai
JPS Conf. Proc., 2014, [Reviewed]

Development of portable polarized 3He spin flipper for polarized neutron experiment at J-PARC
K. Sakai; T. Oku; H. Hayashida; H. Kira; T. Shinohara; K. Oikawa; M. Harada; K. Kakurai; K. Aizawa; M. Arai; Y. Sakaguchi; J. Suzuki; T. Ino; K. Ohoyama
J. Phys.: Conf. Ser., 2014, [Reviewed]

Applications of a micro-pixel chamber (mu PIC) based, time-resolved neutron imaging detector at pulsed neutron beams
J. D. Parker; M. Harada; K. Hattori; S. Iwaki; S. Kabuki; Y. Kishimoto; H. Kubo; S. Kurosawa; Y. Matsuoka; K. Miuchi; T. Mizumoto; H. Nishimura; T. Oku; T. Sawano; T. Shinohara; J- Suzuki; A. Takada; T. Tanimori; K. Ueno; M. Ikeno; M. Tanaka; T. Uchida, The realization of high-intensity, pulsed spallation neutron sources such as J-PARC in Japan and SNS in the US has brought time-of-flight (TOF) based neutron techniques to the fore and spurred the development of new detector technologies. When combined with high-resolution imaging, TOF-based methods become powerful tools for direct imaging of material properties, including crystal structure/internal strain, isotopic/temperature distributions, and internal and external magnetic fields. To carry out such measurements in the high-intensities and high gamma backgrounds found at spallation sources, we have developed a new time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber (mu PIC) coupled with a field-programmable-gate-array-based data acquisition system. The detector combines 100 mu m-level (sigma) spatial and sub-mu s time resolutions with low gamma sensitivity of less than 10(-12) and a rate capability on the order of Mcps (mega-counts-per-second). Here, we demonstrate the application of our detector to TOF-based techniques with examples of Bragg-edge transmission and neutron resonance transmission imaging (with computed tomography) carried out at J-PARC. We also consider the direct imaging of magnetic fields with our detector using polarized neutrons., IOP PUBLISHING LTD
1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013), 2014, [Reviewed]

Development and demonstration of in-situ SLOP He-3 spin filter system for neutron spin analyzer on the SHARAKU polarized neutron reflectometer at J-PARC
H. Hayashida; T. Oku; H. Kira; K. Sakai; M. Takeda; Y. Sakaguchi; T. Ino; T. Shinohara; K. Ohoyama; J. Suzuki; K. Kakurai; M. Mizusawa; N. Miyata; D. Yamazaki; R. Maruyama; K. Soyama; M. Arai, A new neutron reflectometer, SHARAKU, with a vertical sample-plane geometry was installed at beam line 17 at J-PARC Materials and Life Science Facility. Although a polarizing supermirror was previously installed as a neutron spin analyzer on SHARAKU, a He-3 spin filter is advantageous because it can cover a large solid angle. An in-situ SEOP He-3 spin filter system using a new compact laser unit has been developed for the analyzer. In this paper, we report a successful off-specular measurement with the new compact in-situ SEOP analyzer at SHARAKU., IOP PUBLISHING LTD
INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013), 2014, [Reviewed]

Concepts of Neutron Polarisation Analysis Devices for a New Neutron Chopper Spectrometer, POLANO, in J-PARC
K. Ohoyama; T. Yokoo; S. Itoh; T. Ino; M. Ohkawara; T. Oku; S. Tasaki; K. Iwasa; T. J. Sato; S. Ishimoto; K. Taketani; H. Kira; Y. Sakaguch; M. Nanbu; H. Hiraka; H. M. Shimizu; M. Takeda; M. Hino; K. Hayashi; U. Fliges; P. Hautle, The basic concept of polarisation analysers with bender type supermirrors on the polarised neutron spectrometer, POLANO, which is now under construction in J-PARC/MLF, is described, IOP PUBLISHING LTD
1ST CONFERENCE ON LIGHT AND PARTICLE BEAMS IN MATERIALS SCIENCE 2013 (LPBMS2013), 2014, [Reviewed]

Development of portable polarized He-3 neutron spin filter and its application to magnetic field imaging at J-PARC
K. Sakai; T. Oku; H. Hayashida; H. Kira; T. Shinohara; K. Oikawa; M. Harada; K. Kakurai; K. Aizawa; M. Arai; Y. Sakaguchi; J. Suzuki; T. Ino; K. Ohoyama, In order to expand the measurable neutron energy range up to the energy of epithermal neutrons in polarized neutron experiments, a portable polarized He-3 neutron spin filter (NSF) was developed in the Materials and Life science experimental Facility (MLF) at J-PARC. After the generation of He-3 polarization through a spin exchange optical pumping method, the NSF was used as a neutron spin polarizer and flipper in a beam line. We constructed a simple neutron spin analysis apparatus with two He-3 NSFs and made a preliminary attempt to visualize magnetic fields generated by a coil. The results represented that our apparatus could function for neutron wavelengths between approximately 0.5-5 angstrom through the use of a neutron time-of-flight method., IOP PUBLISHING LTD
INTERNATIONAL WORKSHOP ON NEUTRON OPTICS AND DETECTORS (NOP&D 2013), 2014, [Reviewed]

Spatial resolution of a mu PIC-based neutron imaging detector
J. D. Parker; M. Harada; K. Hattori; S. Iwaki; S. Kabuki; Y. Kishimoto; H. Kubo; S. Kurosawa; Y. Matsuoka; K. Miuchi; T. Mizumoto; H. Nishimura; T. Oku; T. Sawano; T. Shinohara; J. Suzuki; A. Takada; T. Tanimori; K. Ueno, We present a detailed study of the spatial resolution of our time-resolved neutron imaging detector utilizing a new neutron position reconstruction method that improves both spatial resolution and event reconstruction efficiency. Our prototype detector system, employing a micro-pattern gaseous detector known as the micro-pixel chamber (mu PIC) coupled with a field-programmable-gate-array-based data acquisition system, combines 100 mu m-level spatial and sub-mu s time resolutions with excellent gamma rejection and high data rates, making it well suited for applications in neutron radiography at high-intensity, pulsed neutron sources. From data taken at the Materials and Life Science Experimental Facility within the Japan Proton Accelerator Research Complex (J-PARC), the spatial resolution was found to be approximately Gaussian with a sigma of 103.48 +/- 0.77 mu m (after correcting for beam divergence). This is a significant improvement over that achievable with our previous reconstruction method (334 +/- 13 mu m), and compares well with conventional neutron imaging detectors and with other high-rate detectors currently under development. Further, a detector simulation indicates that a spatial resolution of less than 60 mu m may be possible with optimization of the gas characteristics and mu PIC structure. We also present an example of imaging combined with neutron resonance absorption spectroscopy. (C) 2013 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Oct. 2013, [Reviewed]

26aXZB-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K; Yokoo T; Itoh S; Suzuki J; Sato T. J; Iwasa K; Kira H; Sakaguchi Y; Oku T; Ino T; Hiraka H; Matsuura M; Fujita M; Tomiyasu K; Kimura H; Suzuki J; Shimizu H. M; Arima T; Takeda M; Kaneko K; Hino M; Muto S; Nojiri H; Lee C. H; Park J. G; Choi S, 一般社団法人日本物理学会
Meeting abstracts of the Physical Society of Japan, 26 Mar. 2013

Magnetic shield design of in-situ SEOP polarized ³He neutron spin filter system
H. Kira; Y. Sakaguchi; J. Suzuki; T. Oku; M. Nakamura; M. Arai; K. Kakurai; Y. Endo; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; L. J. Chang, A polarized 3He neutron spin filter requires a suitably homogeneous magnetic environment to avoid depolarization of 3He nuclear spin. In the present study, we discussed the required performance of the magnetic shield for an in-situ spin exchange optical pumping neutron spin filter system and designed a magnetic shield with T1mag > 100 h under a magnetic field of 3.5 mT perpendicular to the guide field. We then constructed the magnetic shield and confirmed its performance. Finally, we succeeded in developing a magnetic shield for a polarized 3He neutron spin filter system for J-PARC. © 2013 The Authors.
Physics Procedia, 2013, [Reviewed]

26aXZB-2 J-PARC偏極中性子散乱装置POLANO計画の状況(26aXZB 領域10,ビーム物理領域合同 X線・粒子線(中性子),領域10(誘電体,格子欠陥,X線・粒子線,フォノン))
大山 研司; 横尾 哲也; 伊藤 晋一; 鈴木 純一; 佐藤 卓; 岩佐 和晃; 吉良 弘; 坂口 佳史; 奥 隆之; 猪野 隆; 平賀 晴弘; 松浦 直人; 藤田 全基; 富安 啓輔; 木村 宏之; 鈴木 淳市; 清水 裕彦; 有馬 孝尚; 武田 全康; 金子 耕士; 日野 正裕; 武藤 豪; 野尻 浩之; C. H. Lee; J. G. Park; S. Choi, 一般社団法人日本物理学会
日本物理学会講演概要集, Jan. 2013

Polarization analysis equipment in SANS-J-II: Study of polymer electrolyte membrane for fuel cell
Yohei Noda; Daisuke Yamaguchi; Ananda Putra; Satoshi Koizumi; Yoshifumi Sakaguchi; Takayuki Oku; Jun-ichi Suzuki, In small angle neutron scattering spectrometer, SANS-J-II at Japan Research Reactor No. 3 (JRR-3), a polarization analysis setup has been equipped, which is composed of transmission-type supermirror polarizer, radial-bender-type supermirror analyzer, pi flipper, and solenoids for generating guide magnetic field. This setup was applied to the structural study of polymer electrolyte membrane, Nafion under water-swollen state. The sample is known to exhibit several characteristic peaks at wide angle region, which is related to water transporting channels. By use of polarization analysis technique, the coherent and incoherent contributions were successfully separated. Consequently, we obtained reliable information about decaying power law of ionic cluster peak and the shape of the broad peak, relating to ordering with short distance (5.6 angstrom). (c) 2012 The Authors. Published by Elsevier B.V., ELSEVIER SCIENCE BV
9TH INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS IN CONDENSED MATTER INVESTIGATIONS, 2013, [Reviewed]

Precision magnetic field mapping for the He-3 neutron spin filter
Takashi Ino; Yasushi Arimoto; Hiroshi Kira; Yoshifumi Sakaguchi; Takenao Shinohara; Kenji Sakai; Takayuki Oku; Kazuhisa Kakurai; Kenji Ohoyama, He-3 neutron spin filters require a homogeneous magnetic field, otherwise the nuclear polarization of the He-3 gas will easily be lost by small magnetic field gradients. Magnetic cavities with field gradients of 10(-4)/cm or better are often in demand, and many such cavities - Helmholtz coils, solenoids, permanent magnet circuits, etc - have been developed [1]. These magnetic cavities are designed mostly by using simulations, but the actual magnetic fields may differ from the calculations because of the presence of the environmental magnetic field as well as nearby magnetic materials. To evaluate system with a precision of 10(-5) was developed. (C) 2013 The Authors. Published by Elsevier B.V., ELSEVIER SCIENCE BV
9TH INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS IN CONDENSED MATTER INVESTIGATIONS, 2013, [Reviewed]

Magnetic Shield Design of In-situ SEOP Polarized He-3 Neutron Spin Filter System
H. Kira; Y. Sakaguchi; J. Suzuki; T. Oku; M. Nakamura; M. Arai; K. Kakurai; Y. Endo; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; L-J Chang, A polarized He-3 neutron spin filter requires a suitably homogeneous magnetic environment to avoid depolarization of He-3 nuclear spin. In the present study, we discussed the required performance of the magnetic shield for an in-situ spin exchange optical pumping neutron spin filter system and designed a magnetic shield with T-1mag > 100 h under a magnetic field of 3.5 mT perpendicular to the guide field. We then constructed the magnetic shield and confirmed its performance. Finally, we succeeded in developing a magnetic shield for a polarized He-3 neutron spin filter system for J-PARC. (C) 2012 Elsevier B.V., ELSEVIER SCIENCE BV
9TH INTERNATIONAL CONFERENCE ON POLARISED NEUTRONS IN CONDENSED MATTER INVESTIGATIONS, 2013, [Reviewed]

Newly Proposed Inelastic Neutron Spectrometer POLANO
Tetsuya Yokoo; Kenji Ohoyama; Shinichi Itoh; Junichi Suzuki; Kazuaki Iwasa; Taku J. Sato; Hiroshi Kira; Yoshifumi Sakaguchi; Takashi Ino; Takayuki Oku; Keisuke Tomiyasu; Masato Matsuura; Haruhiro Hiraka; Masaki Fujita; Hiroyuki Kimura; Toyoto Sato; Junichi Suzuki; Masayasu Takeda; Koji Kaneko; Masahiro Hino; Suguru Muto, In Japan Proton Accelerator Research Complex (J-PARC), the construction of direct geometry chopper spectrometer dedicated for inelastic scattering with polarization analysis is newly planed. The concepts of the instrument are compact design, higher neutron flux, higher energy polarization up to 150 similar to 200 meV, and medium resolution in order to achieve a new paradigm in the momentum-energy space beyond the reactor based spectrometers for dynamical studies in materials., PHYSICAL SOC JAPAN
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jan. 2013, [Reviewed]

Basic Concepts of Polarisation Analysis for Neutron Chopper Spectrometer POLANO at J-PARC
K. Ohoyama; T. Yokoo; S. Itoh; J. Suzuki; K. Iwasa; T. J. Sato; H. Kira; Y. Sakaguchi; T. Ino; T. Oku; K. Tomiyasu; M. Matsuura; H. Hiraka; M. Fujita; H. Kimura; T. Sato; J. Suzuki; H. M. Shimizu; T. Arima; M. Takeda; K. Kaneko; M. Hino; S. Muto; H. Nojiri; C. H. Lee; J. G. Park; S. Choi, The basic concept underlying the use of neutron polarisers and analysers in a polarised neutron spectrometer which will be constructed in J-PARC/MLF is discussed. The spectrometer, named POLANO, is a compact chopper spectrometer for polarisation analysis in the energy region up to E-i similar to 200 meV. In the first stage of this project, a He-3 spin filter polarised by the spin exchange optical pumping method will be used as the polariser. Based on the optimisations of the filter parameters, we confirm that the designed optimised He-3 spin filters will be feasible for use up to 80 meV., PHYSICAL SOC JAPAN
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Jan. 2013, [Reviewed]

Neutron imaging detector based on the mu PIC micro-pixel chamber
J. D. Parker; K. Hattori; H. Fujioka; M. Harada; S. Iwaki; S. Kabuki; Y. Kishimoto; H. Kubo; S. Kurosawa; K. Miuchi; T. Nagae; H. Nishimura; T. Oku; T. Sawano; T. Shinohara; J. Suzuki; A. Takada; T. Tanimori; K. Ueno, We have developed a prototype time-resolved neutron imaging detector employing the micro-pixel chamber (mu PIC), a micro-pattern gaseous detector, coupled with a field programmable gate array-based data acquisition system for applications in neutron radiography at high-intensity neutron sources. The prototype system, with an active area of 10 x 10 cm(2) and operated at a gas pressure of 2 atm, measures both the energy deposition (via time-over-threshold) and three-dimensional track of each neutron-induced event, allowing the reconstruction of the neutron interaction point with improved accuracy. Using a simple position reconstruction algorithm, a spatial resolution of 349 +/- 36 mu m was achieved, with further improvement expected. The detailed tracking allows strong rejection of background gamma-rays, resulting in an effective gamma sensitivity of 10(-12) or less, coupled with stable, robust neutron identification. The detector also features a time resolution of 0.6 us. (c) 2012 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jan. 2013, [Reviewed]

Development of a non-adiabatic two-coil spin flipper for a polarised thermal neutron diffractometer with a He-3 spin filter
Kenji Ohoyama; Kenji Tsutsumi; Takashi Ino; Haruhiro Hiraka; Yasuo Yamaguchi; Hiroshi Kira; Takayuki Oku; Yoshifumi Sakaguchi; Yasushi Arimoto; Wei Zhang; Hisamichi Kimura; Kazuaki Iwasa; Masayasu Takeda; Jun-ichi Suzuki; Kazuyoshi Yamada; Kazuhisa Kakurai, Using a transportable He-3 spin filter neutron polariser, we have constructed a polarised thermal neutron diffraction (PND) instrument on a powder neutron diffractometer. To minimise the inhomogeneity of the magnetic fields around the He-3 spin filter, an optimised compact non-adiabatic two-coil spin flipper for the PND instrument was developed. Magnetic field criteria were discussed for the design of the flipper. Using the PND instrument with the flipper, we succeeded in observing a difference in the magnetic field dependence of the deposited ferromagnetic phases in nanocomposite materials. (C) 2012 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jul. 2012, [Reviewed]

A compact SEOP He-3 neutron spin filter with AFP NMR
Takashi Ino; Yasushi Arimoto; Hirohiko M. Shimizu; Yoshifumi Sakaguchi; Kenji Sakai; Hiroshi Kira; Takenao Shinohara; Takayuki Oku; Jun-ichi Suzuki; Kazuhisa Kakurai; Lieh-Jeng Chang, We developed AFP NMR in an aluminum container for polarized noble gas nuclei. The radio frequency magnetic field inside the aluminum container was designed from computer simulations. The polarization loss by the AFP spin flip of He-3 was measured to be as low as 3.8 x 10(-4). With this technique, a compact in-situ polarizing He-3 neutron spin filter with AFP NMR is demonstrated., IOP PUBLISHING LTD
5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING, 2012, [Reviewed]

Development of polarized Xe gas target for neutron experiment at J-PARC
K. Sakai; T. Oku; T. Shinohara; H. Kira; M. Ooi; F. Maekawa; K. Kakurai; T. Ino; Y. Arimoto; H. M. Shimizu; Y. Sakaguchi; J. Suzuki; K. Ohoyama; L. J. Chang, At the Materials and Life science experimental Facility (MLF) in J-PARC, an experiment of detecting a neutron polarizing ability caused by a neutron-nuclear spin correlation at a resonant peak of Xe-129 is planned. We evaluated measurable quantities based on a neutron optical theorem, developed a polarized Xe gas system, and carried out a feasibility test of our apparatus., IOP PUBLISHING LTD
5TH EUROPEAN CONFERENCE ON NEUTRON SCATTERING, 2012, [Reviewed]

Quantitative magnetic field imaging by polarized pulsed neutrons at J-PARC
T. Shinohara; K. Sakai; M. Ohi; T. Kai; M. Harada; K. Oikawa; F. Maekawa; J. Suzuki; T. Oku; S. Takata; K. Aizawa; M. Arai; Y. Kiyanagi, One of the most interesting applications of neutron imaging is that it enables the observation of magnetic field. Because the interaction between the neutron spin and the magnetic field depends on the neutron energy, it is important to study the neutron energy dependence of magnetic field imaging to quantitatively treat the characteristics of the magnetic field. In this study, we have performed a polarized pulsed neutron imaging experiment using a time-of-flight method at J-PARC and have analyzed the energy dependence of the obtained polarization image. We have also quantitatively analyzed the strength and the direction of the magnetic field relative to the quantized axis inside a solenoid coil. (C) 2011 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Sep. 2011, [Reviewed]

External cavity design of high-power diode laser for polarized helium-3 neutron spin filters based on spin-exchange optical pumping
Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; H. Kira; T. Oku; Y. Sakaguchi; K. Kakurai; K. Sakai; J. Suzuki; S. Koizumi; M. Arai; Y. Endo; M. Nakamura; T. Shinohara; M. Takeda; S. Wakimoto; D. Yamazaki; K. Ohoymama; H. Hiraka; K. Yamada; K. Tsutsumi; L. -J. Chang, Polarized neutron spin filters are being developed based on spin-exchange optical pumping. In the present study a high-power diode laser (85 W) was used to excite Rb atoms and the laser linewidth was narrowed using an external cavity. The optics in the external cavity were designed by ray tracing. The ray-trace calculations demonstrated that a doublet lens in front of the laser eliminates aberrations. The maximum spectral peak height in the doublet optics was found to be 25% higher than for a singlet lens. (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jun. 2011, [Reviewed]

Research on glass cells for He-3 neutron spin filters
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; K. Aizawa; M. Arai; M. Takeda; S. Wakimoto; D. Yamazaki; S. Koizumi; Y. Endoh; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Ohara; K. Kakurai, Glass cells play an important role in polarized He-3 neutron spin filters. To evaluate the scattering and absorption contribution from glass cells during neutron scattering experiments, we measured small-angle scattering and neutron transmission in GE180 and other glasses. The small-angle neutron scattering measurements revealed that the glasses used for He-3 spin filters have acceptably lower scattering: d Sigma(Q)/d Omega=4-7 x 10(-4) cm(-1) at Q=0.03-0.12 angstrom(-1). The transmission measurement was performed at J-PARC. Neutron transmission of about 92% through empty GE180 cells was observed over a wide wavelength range 0.014-7.0 angstrom. To pursue the possibility of being a structural influence on He-3 spin relaxation in GE180 glass cells, we performed precise X-ray diffraction measurement using synchrotron radiation at Spring-8. From these measurements, a structural difference was observed among GE180 glasses with different thermal treatments. (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jun. 2011, [Reviewed]

Development and test of SEOP neutron spin filter in Japan
H. Kira; Y. Sakaguchi; T. Oku; J. Suzuki; M. Nakamura; M. Arai; K. Kakurai; Y. Endo; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Tsutsumi; K. Ohoyama; H. Hiraka; K. Yamada; L. -J. Chang, We have begun the development of an in-situ spin-exchange optical pumping (SEOP) system aiming to use it as a neutron spin filter for incident beam polarization at the Japan Proton Accelerator Research Complex (J-PARC). To use it, it is recommended that the optics be adjusted easily, have high stability, and have a small size. In this paper we improved our previous SEOP system aiming to use it in J-PARC and performed a neutron beam test at the JRR-3 NOP beamline to see the performance of the neutron spin filter (NSF). The polarization of the (3)He gas reached 73%. This paper gives the present status of the development of in-situ SEOP system in J-PARC. (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jun. 2011, [Reviewed]

Measurement of the neutron beam polarization of BL05/NOP beamline at J-PARC
T. Ino; Y. Arimoto; T. Yoshioka; K. Mishima; K. Taketani; S. Muto; H. M. Shimizu; H. Kira; Y. Sakaguchi; T. Oku; K. Sakai; T. Shinohara; J. Suzuki; H. Otono; H. Oide; S. Yamashita; S. Imajo; H. Funahashi; M. Yamada; Y. Iwashita; M. Kitaguchi; M. Hino; Z. Suzuki; T. Sanuki; T. Seki; K. Hirota; K. Ikeda; H. Sato; Y. Otake; H. Ohmori; T. Morishima; T. Shima, We measured the neutron beam polarization of the BL05/NOP (Neutron Optics and Physics) beamline at J-PARC with an accuracy of less than 10(-3) using polarized He-3 gas as a neutron spin analyzer. Precise polarimetry of the neutron beam is necessary to understand the beamline optics as well as for the asymmetry measurements of the neutron beta decay, which are planned in this beamline. (C) 2011 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jun. 2011, [Reviewed]

A high S/N ratio spin flip chopper system for a pulsed neutron source
K. Taketani; T. Ebisawa; M. Hino; K. Hirota; T. Ino; M. Kitaguchi; K. Mishima; S. Muto; H. Oide; T. Oku; H. Otone; K. Sakai; T. Shima; H. M. Shimizu; S. Yamashita; T. Yoshioka, We report a successful demonstration of a high SIN ratio spin flip chopper (SFC) system for pulsed neutron sources. The system consists of two SFCs and each SFC consists of a radio frequency (RF) flipper and Soller magnetic supermirrors. The aperture of the Soller mirror was 18 mm in width and 20 mm in height. The S/N ratio of the system was 306:1. This system is going to be installed to measure neutron lifetime precisely using the cold-neutron beam line, BL05 polarized-beam branch, at the Materials and Life Science Experimental Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC). (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2011, [Reviewed]

Characterization of glasses for He-3 neutron spin filter cells
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; M. Arai; M. Takeda; S. Wakimoto; D. Yamazaki; S. Koizumi; Y. Endoh; K. Kakurai; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; L. J. Chang, Polarized He-3 neutron spin filters are suitable devices for polarizing neutrons at spallation neutron facilities because of the wide coverage in energy range and the large solid-angles. The glass cell plays an important role in the He-3 spin filters. In order to get good quality of glass cells, the investigation on the microscopic structure would be helpful. In this paper, we report on the results of X-ray diffraction for several glasses. We observed a correlation between the position of the first peak and the helium permeation velocity. We also observed a small difference in the diffraction curve among GE180 glasses with different thermal treatment. Desirable structure for He-3 spin filters is discussed. (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2011, [Reviewed]

Polarization of very cold neutron using a permanent magnet quadrupole
Tamaki Yoshioka; Kenji Mishima; Takashi Ino; Kaoru Taketani; Suguru Muto; Takahiro Morishima; Hirohiko M. Shimizu; Takayuki Oku; Junichi Suzuki; Takenao Shinohara; Kenji Sakai; Hiromi Sato; Katsuya Hirota; Yoshie Otake; Masaaki Kitaguchi; Masahiro Hino; Yoshichika Seki; Yoshihisa Iwashita; Masako Yamada; Masahiro Ichikawa; Takanori Sugimoto; Shinsuke Kawasaki; Sachio Komamiya; Hidetoshi Otono; Yoshio Kamiya; Satoru Yamashita; Peter Geltenbort, For the future fundamental physics experiments by using cold neutrons, we are developing a device which can measure the neutron polarization degree by accuracy significantly below 10(-3). A quadrupole magnet is one of the promising candidate to measure the neutron polarization degree by such extremely high precision. We have performed a polarization experiment by using the quadrupole magnets at the Very Cold Neutron (VCN) port of the PF-2 in the Institute Laue-Langevin (ILL). As a result, we obtained the polarization degree P with very high accuracy P=0.9994 +/- 0.0001(stat.) +/- 0.0003(syst.), which meet our requirement significantly. (C) 2010 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2011, [Reviewed]

Development of thin film neutron focusing lenses
Takashi Ino; Takenao Shinohara; Tomohiro Adachi; Katsuya Hirota; Masahiro Hino; Takayuki Oku; Kaoru Taketani; Kenji Mishima; Tamaki Yoshioka; Yasushi Arimoto; Suguru Muto; Jun-ichi Suzuki; Hirohiko M. Shimizu, We have developed thin film Fresnel lenses made of a hydrogen-free amorphous polymer for neutron focusing purposes. A neutron beam test showed the strong focusing of a cold neutron beam, and an increase of the neutron intensity was observed to be more than 50 times. (C) 2010 Elsevier BM. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2011, [Reviewed]

Thermal fluctuations in perpendicular recording media: New methodology for estimation of activation moment
H. Mamiya; H. Hagiya; Y. Oba; M. Ohnuma; T. Oku; J. Suzuki; M. Yokoyama; T. Katayama; Y. Nishihara; H. Awano; T. Koda, In nanoparticulate films with perpendicular magnetic anisotropy, a large demagnetizing field almost compensates for the experimentally designed change in the magnetic field applied parallel to the film normal. We propose a new method based on field-cycling to eliminate the uncertainty in the demagnetizing response from the analysis of the activation volume of the reversal or magnetic activation moment in such films. In this method, the applied field induced variation in the magnetic relaxation rate is measured before the effect of the demagnetizing field becomes dominant. We also discuss an analogical thermal-cycling method to clarify the temperature dependence of the barrier height for magnetization reversal in a magnetic field. We apply these methods to a Co74Pt16Cr10-SiO2 nanoparticulate film as an example. The results demonstrate that these methods are useful for studying thermal fluctuations in perpendicular recording media. © Published under licence by IOP Publishing Ltd., Institute of Physics Publishing
Journal of Physics: Conference Series, 2011, [Reviewed]

Structure of glasses for He-3 neutron spin filter cells
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; K. Aizawa; M. Arai; M. Takeda; Y. Endoh; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Ohara; K. Kakurai, In spin-exchange optical pumping, there is unknown excess relaxation, called the X-factor, that limits attainable He-3 polarization. It is known that the X-factor depends on the glass containers. Hence, it is expected that there are cell-to-cell variations in microscopic structure among the cells and that these variations affect the attainable He-3 polarization. However, microscopic structure of the glasses for He-3 neutron spin filters has not been clarified yet. In this paper, we have performed precise X-ray diffraction measurements for the glasses at SPring-8 using synchrotron radiation. The structural differences are observed between several types of glasses, and also, between the GE180 glass pieces with different thermal treatment. Based on the results, the structural influence on the performance of He-3 neutron spin filters is discussed., IOP PUBLISHING LTD
JCNS WORKSHOP ON MODERN TRENDS IN PRODUCTION AND APPLICATIONS OF POLARIZED 3HE, 2011, [Reviewed]

Applications of He-3 neutron spin filters on the small-angle neutron scattering spectrometer SANS-J-II
Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Aizawa; M. Arai; Y. Noda; S. Koizumi; M. Takeda; Y. Endoh; L. J. Chang; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; K. Kakurai, A polarized He-3 neutron spin filter has been applied to polarization analysis on the small-angle neutron scattering spectrometer SANS-J-II at JRR-3. Measurements were taken on silver behenate, which has several coherent peaks in the small-angle region with a background of spin incoherent hydrogen scattering. Here we demonstrate that the coherent and spin incoherent scattering were successfully separated by the polarization analysis using the He-3 spin filter on the instrument., IOP PUBLISHING LTD
JCNS WORKSHOP ON MODERN TRENDS IN PRODUCTION AND APPLICATIONS OF POLARIZED 3HE, 2011, [Reviewed]

Developments of In-Situ SEOP Polarized He-3 Neutron Spin Filter in Japan
H. Kira; Y. Sakaguchi; T. Oku; J. Suzuki; M. Nakamura; M. Arai; Y. Endoh; L. J. Chang; K. Kakurai; Y. Arimoto; T. Ino; H. M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada, We launched the polarized He-3 neutron spin filters (NSF) project in order to provide neutron polarization for the pulsed neutron beams in Japan. We adopted the in-situ spin exchange optical pumping (SEOP) technique to polarize the nuclear spin of He-3 atoms because it has some advantages for our applications. The overall system size is compact and it avoids the problem of the time decay of nuclear spin of He-3 thus suppressing the costs of maintenance and providing other advantages [1, 2] with respect to data analysis and quality. In this paper, we performed pulsed neutron beam tests of our compact in-situ SEOP NSF system at the BL10 beamline in the Materials and Life Science Experimental Facility of the Japan Proton Accelerator Research Complex (J-PARC). The polarization of the He-3 gas reached was 73 % and a pump-up time constant of 9.5 h was observed. This paper is a status report about the development of in-situ SEOP NSF system for the pulsed beam at J-PARC., IOP PUBLISHING LTD
JCNS WORKSHOP ON MODERN TRENDS IN PRODUCTION AND APPLICATIONS OF POLARIZED 3HE, 2011, [Reviewed]

Neutron Imaging Detector Based on the mu PIC Micro-Pixel Gaseous Chamber
Joseph D. Parker; Masahide Harada; Kaori Hattori; Satoru Iwaki; Shigeto Kabuki; Yuji Kishimoto; Hidetoshi Kubo; Shunsuke Kurosawa; Kentaro Miuchi; Hironobu Nishimura; Takayuki Oku; Tatsuya Sawano; Takenao Shinohara; Jun-ichi Suzuki; Toru Tanimori; Kazuki Ueno, A neutron imaging detector employing the micropixel gaseous chamber (mu PIC) and an FPGA (Field Programmable Gate Array)-based data acquisition system has been developed for applications in small-angle neutron scattering (SANS) and neutron radiography at high-intensity, pulsed neutron sources. A small amount of He-3 added to the gas mixture is used as the neutron absorber, with a detection efficiency for thermal neutrons of up to 30%. Our FPGA program permits the simultaneous measurement of the track length and energy deposition for the resulting proton-triton tracks, allowing the separation of the proton and triton for improved position resolution. The detector features a spatial resolution of less than 120 mu m, a time resolution of similar to 1 mu s, and an effective gamma sensitivity of less than 10(-9). We report preliminary results from a third test experiment performed in February 2011 at the NOBORU beam line at the J-PARC spallation neutron source. We will also discuss ongoing efforts to optimize the gas mixture for improved position resolution and planned upgrades to the data acquisition system., IEEE
2011 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), 2011, [Reviewed]

Practical Applications of Permanent Magnet Multipoles
Y. Iwashita; M. Ichikawa; M. Yamada; T. Sugimoto; H. Tongu; H. Fujisawa; M. Masuzawa; T. Tauchi; T. Oku; K. Hirota; H. M. Shimizu; Caitu Shi; Y. Zhu, Permanent magnets are superior to electromagnets in generating strong multipole magnetic fields. Their fields are sometimes stronger than those that can be generated by superconducting magnets with the same bore radius, when the number of poles are higher. Three fabricated multipoles including a quadrupole magnet for the ILC (International Linear Collider) final focus doublet, a quadrupole magnets as a spin filter for cold neutrons, and a sextupole magnet for neutron beam focusing are described., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2010, [Reviewed]

Performance of a neutron imaging detector based on the μpIC micro-pixel gaseous chamber
Joseph D. Parker; Masahide Harada; Kaori Hattori; Satoru Iwaki; Shigeto Kabuki; Yuji Kishimoto; Hidetoshi Kubo; Shunsuke Kurosawa; Kentaro Miuchi; Hironobu Nishimura; Takayuki Oku; Tatsuya Sawano; Takenao Shinohara; Jun-Ichi Suzuki; Toru Tanimori; Kazuki Ueno, A new detector employing a time projection chamber built on the micro-pixel gaseous chamber (PIC) and an FPGA (Field Programmable Gate Array)-based data acquisition system has been developed as a thermal-neutron imaging detector for small-angle neutron scattering (SANS) and neutron radiography. A small amount of 3He added to the gas mixture is used as the neutron absorber, giving a detection efficiency for thermal neutrons of up to 30%. An improved FPGA program permits the simultaneous measurement of the track length and energy deposition for the resulting proton-triton pairs, allowing the separation of the proton and triton for improved position resolution. Here we report the preliminary results of several test experiments performed at the NOBORU beam line at the J-PARC Spallation Neutron Source in November 2009 and June 2010. During these experiments, we observed time-averaged data rates up to 4.5 MHz, and with a time resolution on the order of 1 s per neutron event, we were able to cleanly separate the individual neutron pulses and determine neutron energy by time-of-flight. Using images of cadmium test charts, the position resolution of our detector was estimated as 315 15m (preliminary). We also successfully observed resonance absorption in various metals, SANS diffraction from spherical SiO2 nanoparticles, and Bragg edge transmission of a welded steel plate. © 2010 IEEE.
IEEE Nuclear Science Symposium Conference Record, 2010, [Reviewed]

Development of a triplet magnetic lens system to focus a pulsed neutron beam
Takayuki Oku; Hiroshi Kira; Takenao Shinohara; Shin-ichi Takata; Masatoshi Arai; Jun-ichi Suzuki; Hirohiko M. Shimizu, A triplet magnetic lens system composed of three sextupole-magnets and two spin flippers was constructed to focus pulsed neutrons in a wide wavelength range with same focal lengths. In this study, we performed a pulsed neutron beam focusing experiment with the system. The design of the system and the experimental results are shown and discussed., IOP PUBLISHING LTD
INTERNATIONAL CONFERENCE ON NEUTRON SCATTERING 2009, 2010, [Reviewed]

Performance of a Neutron Imaging Detector Based on the mu PIC Micro-Pixel Gaseous Chamber
Joseph D. Parker; Masahide Harada; Kaori Hattori; Satoru Iwaki; Shigeto Kabuki; Yuji Kishimoto; Hidetoshi Kubo; Shunsuke Kurosawa; Kentaro Miuchi; Hironobu Nishimura; Takayuki Oku; Tatsuya Sawano; Takenao Shinohara; Jun-ichi Suzuki; Toru Tanimori; Kazuki Ueno, A new detector employing a time projection chamber built on the micro-pixel gaseous chamber (mu PIC) and an FPGA (Field Programmable Gate Array)-based data acquisition system has been developed as a thermal-neutron imaging detector for small-angle neutron scattering (SANS) and neutron radiography. A small amount of He-3 added to the gas mixture is used as the neutron absorber, giving a detection efficiency for thermal neutrons of up to 30%. An improved FPGA program permits the simultaneous measurement of the track length and energy deposition for the resulting proton-triton pairs, allowing the separation of the proton and triton for improved position resolution. Here we report the preliminary results of several test experiments performed at the NOBORU beam line at the J-PARC Spallation Neutron Source in November 2009 and June 2010. During these experiments, we observed time-averaged data rates up to 4.5 MHz, and with a time resolution on the order of 1 mu s per neutron event, we were able to cleanly separate the individual neutron pulses and determine neutron energy by time-of-flight. Using images of cadmium test charts, the position resolution of our detector was estimated as 315 +/- 15 mu m (preliminary). We also successfully observed resonance absorption in various metals, SANS diffraction from spherical SiO2 nanoparticles, and Bragg edge transmission of a welded steel plate., IEEE
2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD (NSS/MIC), 2010, [Reviewed]

Small-angle polarized neutron scattering study of spherical Fe16N2 nano-particles for magnetic recording tape
Takayuki Oku; Takayuki Kikuchi; Takenao Shinohara; Jun-ichi Suzuki; Yuya Ishii; Masayasu Takeda; Kazuhisa Kakurai; Yuji Sasaki; Mikio Kishimoto; Makoto Yokoyama; Yoshikazu Nishihara, We have performed small-angle polarized neutron scattering experiments of spherical Fe16N2 nanoparticles, which are potential candidate materials for high density magnetic recording tape. The results were analyzed based on a core-shell model, and we evaluated the magnetic structure of the particles. The correlation between the magnetic structure and magnetic stability of the particles were discussed in terms of high density recordings. (C) 2009 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Sep. 2009, [Reviewed]

Design of a neutron polarizer using polarizing super mirrors for the TOF-SANS instrument at the J-PARC
Takenao Shinohara; Jun-ichi Suzuki; Takayuki Oku; Shin-ichi Takata; Hiroshi Kira; Kentaro Suzuya; Kazuya Aizawa; Masatoshi Arai; Toshiya Otomo; Masaaki Sugiyama, Small-angle neutron scattering technique using polarized neutrons is powerful for studying structures in the range between nm and mu m of magnetic materials. In addition, they have been used for the incident beam of focusing-geometry SANS instruments using a magnetic neutron tens, where a high polarization degree of about 99.9% is necessary because the imperfectness of the neutron polarization increases the background level. We are going to install such a magnetic focusing system on the new time-of-flight SANS (TOF-SANS) instrument at the J-PARC so as to make q(min) smaller than 10(-3)angstrom(-1) and improve the resolution of the conventional TOF-SANS at low q. As a polarizing device of the instrument, two V-shaped polarizing super mirrors arranged in crossed geometry to enhance the polarization degree has been considered. In this paper, we present the concept and the detailed design of this device and its performance estimated by Monte Carlo simulations. (C) 2009 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Sep. 2009, [Reviewed]

Development of modulating permanent magnet sextupole lens for focusing of pulsed cold neutrons
Masako Yamada; Yoshihisa Iwashita; Masahiro Ichikawa; Takanori Sugimoto; Hiromu Tongu; Hiroshi Fujisawa; Hirohiko M. Shimizu; Takashi Ino; Kenji Mishima; Kaoru Taketani; Tamaki Yoshioka; Suguru Muto; Takahiro Morishima; Takayuki Oku; Jun ichi Suzuki; Takenao Shinohara; Kenji Sakai; Hiromi Sato; Katsuya Hirota; Yoshie Otake; Yoshichika Seki; Shinsuke Kawasaki; Sachio Komamiya; Yoshio Kamiya; Hidetoshi Otono; Satoru Yamashita; Peter Geltenbort, Modulating permanent magnet sextupole lens (PMSx) for focusing pulsed cold neutrons is under development. The synchronized modulation of its field gradient suppresses the chromatic aberration which arises from the Time Of Flight method. The strength of the magnetic field, the torque, and the rise of temperature during its operation are studied on a fabricated prototype. Experiments on focusing pulsed very cold neutrons (VCN) at ILL (Institute of Laue Langevin, France) were carried out and VCN with around λ=40 Å were focused by the PMSx at a focal length of about 0.5 m. The experimental results are presented in conjunction with the principle of the neutron focusing and the modulating method of the focal strength of permanent magnet lens with the double ring structure. © 2009 Elsevier B.V. All rights reserved.
Physica B: Condensed Matter, 01 Sep. 2009, [Reviewed]

Highly polarized very cold neutrons through a permanent magnet quadrupole
Kaoru Taketani; Kenji Mishima; Takashi Ino; Tamaki Yoshioka; Suguru Muto; Takahiro Morishima; Hirohiko M. Shimizu; Takayuki Oku; Junichi Suzuki; Takenao Shinohara; Kenji Sakai; Hiromi Sato; Katsuya Hirota; Yoshie Otake; Masaaki Kitaguchi; Masahiro Hino; Yoshichika Seki; Yoshihisa Iwashita; Masako Yamada; Masahiro Ichikawa; Takanori Sugimoto; Shinsuke Kawasaki; Sachio Komamiya; Yoshio Kamiya; Hidetoshi Otono; Satoru Yamashita; Peter Geltenbort, We obtained highly polarized very cold neutrons through a quadrupole magnet with a large aperture. When neutrons go through a quadrupole magnet, parallel-spin neutrons are attracted to the magnet axis and anti-parallel-spin neutrons are repelled off the axis. Therefore, the neutrons through a sufficiently long quadrupole magnet have completely parallel-spin. At the downstream of the quadrupole magnet, we placed another quadrupole magnet to divide neutrons into two regions depending on their spin directions. We obtained the neutron polarization from the integrated count of the two regions and found it was 99.88±0.09 (stat.)±0.05 (syst.)%. © 2009 Elsevier B.V. All rights reserved.
Physica B: Condensed Matter, 01 Sep. 2009, [Reviewed]

Development of a compact on-beam SEOP neutron spin filter
Takashi Ino; Mitsutaka Nakamura; Takayuki Oku; Takenao Shinohara; Jun-ichi Suzuki; Kenji Ohoyama; Haruhiro Hiraka, We have designed and demonstrated a prototype on-beam spin-exchange optical pumping (SEOP) (3)He neutron spin filter (NSF). It is designed as the incident neutron polarizer for spallation neutron sources. where the installation space is limited due to thick radiation shielding. The size of the NSF is roughly 50cm x 50cm x 25 cm including the diode-laser optics with a frequency narrowing external cavity, and a cylindrical (3)He cell as large as a diameter of 5 cm and a length of 10 cm can fit. A neutron beam test was performed at the NOP beamline of JRR-3 to see the performance of the NSF. (C) 2009 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Sep. 2009, [Reviewed]

Magnetic Intraparticle Structure in Ferromagnetic Pd Nanoparticle
Yojiro Oba; Takenao Shinohara; Takayuki Oku; Jun-ichi Suzuki; Masato Ohnuma; Tetsuya Sato, The small-angle neutron scattering measurement of Pd nanoparticles was performed to investigate their intraparticle magnetic Structures. The magnetic scattering from the magnetization of the samples was observed using the polarized neutron. The nuclear scattering indicated that the Pd nanoparticles can be regarded as spherical particles, and the magnetic scattering is explained based on the shell model that the particle is composed of magnetic core and shell. The magnetic moment of the core was larger than that of the shell. These results suggest that the spontaneous magnetization of the Pit nanoparticles mainly exists in the core region., PHYSICAL SOC JAPAN
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, Apr. 2009, [Reviewed]

Simulation study of a pulsed neutron focusing using a pulsed electromagnetic lens coupled with a permanent magnet
H. Iwashita; H. Iwasa; F. Hiraga; T. Kamiyama; Y. Kiyanagi; J. Suzuki; T. Shinohara; T. Oku; H. M. Shimizu, A pulsed sextupole electromagnetic lens with suitably controlled time-dependent magnetic field can in principle focus pulsed neutrons at the same focal point over a wide range of wavelength as the lens removes aberrations. However, in fact, it is difficult to focus neutrons over a wide range of wavelength because attenuation of a practical pulsed sextupole electromagnet is faster than an ideal case. We have devised a method of canceling the difference between the practical pulsed sextupole magnetic field and the ideal magnetic field with the use of a permanent sextupole magnet. We performed simulation calculations to investigate the feasibility of this method, and it was shown that focusing wavelength range spread compared with the case using a pulsed magnetic lens only. This result indicates the usefulness of the method. (C) 2008 Published by Elsevier B.V., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Feb. 2009, [Reviewed]

Design and performance analyses of the new time-of-flight smaller-angle neutron scattering instrument at J-PARC
Takenao Shinohara; Shin-ichi Takata; Jun-ichi Suzuki; Takayuki Oku; Kentaro Suzuya; Kazuya Aizawa; Masatoshi Arai; Toshiya Otomo; Masaaki Sugiyama, The new time-of-flight smaller-angle neutron scattering (TOF-SANS) instrument HI-SANS is projected to be built in the Materials and Life Science Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). The target of the HI-SANS is to study microstructures and hierarchical structures of nano-meter sized materials and their complexes. For the simultaneous collection of scattering data in the wide q range (similar to 3 x 10(-3) < q < similar to 50 angstrom(-1)) with good q-resolution and high efficiency, this instrument is designed to use large area detectors and broad wavelength bandwidth within the first frame. For the high-quality beam transport and the efficacious utilization of pulsed neutrons, the state of the art neutron optics is installed. Moreover, a focusing device based on sextupole magnets is adopted in the TOF-SANS for the first time to make accessible minimum q value (q(min)) lower with high q resolution. The design optimization and performance analyses of the HI-SANS have been performed by Monte Carlo simulations. (C) 2008 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Feb. 2009, [Reviewed]

Pulsed neutron beam control using a magnetic multiplet lens
Takayuki Oku; Takenao Shinohara; Jun-ichi Suzuki; Roger Pynn; Hirohiko M. Shimizu, As a magnetic neutron lens based on a sextupole magnet to focus neutrons has chromatic aberration, it has been proposed that the chromatic aberration can be compensated in the pulsed neutron beam focusing by combining the focusing and defocusing functions of the multiplet magnetic lens system synchronously with time-of-flight (TOF) of neutrons. In this study, we performed numerical simulations on the multiplet magnetic lens system to investigate how a pulsed neutron beam can be controlled on the basis of the TOF method. It was then confirmed that the chromatic aberration can be compensated and the focal condition can be maintained over a certain A-range by utilizing plural magnetic lenses in series and choosing the focusing and defocusing function of each magnetic lens synchronously with TOF of neutrons. (C) 2008 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Feb. 2009, [Reviewed]

2D elemental analysis approach in focused neutron beam induced prompt gamma-ray analysis at JAEA
M. Segawa; H. Matsue; Y. Sekiya; S. Yamada; T. Shinohara; T. Oku; H. Sasao; J. Suzuki; H. M. Shimizu, We have constructed a new system which could analyze a position distribution of several elements in a sample with 2 dimensional prompt gamma-ray analysis (2D PGA) system using focused neutron beam at JAEA. We aimed that the system could analyze local information in a sample with a good signal gamma-ray from interested elements to noise of background gamma-ray ratio. As a result, this system could determine the position resolution and spatial resolution within 1 mm., SPRINGER
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, Dec. 2008, [Reviewed]

Application of a neutron-polarizing device based on a quadrupole magnet to a focusing SANS instrument with a magnetic neutron lens
T. Oku; T. Shinohara; T. Kikuchi; Y. Oba; H. Iwase; S. Koizumi; J. Suzuki; H. M. Shimizu, A magnetic neutron lens based on a sextupole magnet is considered an ideal neutron-focusing device for focusing-geometry small-angle neutron scattering (FSANS) instruments using polarized neutrons. However, the magnetic neutron lens functions both as focusing and defocusing lens for positive and negative polarity neutrons, respectively. Negative polarity neutrons are defocused by the lens and spread over the detector of the instrument, resulting in an increase of the background level. Therefore, a neutron-polarizing device with a very high polarizing efficiency P greater than or similar to 0.99 is required to be employed together with the magnetic neutron lens. A neutron-polarizing device based on a quadrupole magnet has a very high polarizing efficiency P greater than or similar to 0.99, which is sufficient for the application to the FSANS instrument. In this study, we installed the quadrupole magnet in the FSANS instrument SANS-J-II and investigated its performance with respect to the conventional magnetic super-mirror polarizers of the FSANS instrument., IOP PUBLISHING LTD
MEASUREMENT SCIENCE AND TECHNOLOGY, Mar. 2008, [Reviewed]

A high-resolution two-dimensional He-3 neutron MSGC with pads for neutron scattering experiments
K. Fujita; H. Takahashi; P. Siritiprussamee; H. Niko; K. Nishi; Y. Takada; T. Oku; J. Suzuki; T. Ino; H. M. Shimizu; M. Furusaka, High-resolution neutron imaging detectors are required for future high-intensity neutron sources such as the J-PARC project in Japan. We are developing a high-resolution gaseous neutron detector by using the microstrip gas chamber (MSGC) with floating-pad readout method. In this paper, we describe the neutron detector performance obtained with this MSGC and the readout method. For a 3 cm x 3 cm MSGC filled with 5 bar CF4 and 0.5 bar He-3, we could achieve a measured position resolution of 0.6 mm (FWHM) including the beam size and the parallax error. (c) 2007 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Oct. 2007, [Reviewed]

Highly polarized cold neutron beam obtained by using a quadrupole magnet
Takayuki Oku; Satoru Yamada; Takenao Shinohara; Jun-ichi Suzuki; Kenji Mishima; Katsuya Hirota; Hiromi Sato; Hirohiko M. Shimizu, We performed a cold neutron polarization experiment using a polarization device based on a quadrupole magnet. By passing through the aperture of the quadrupole magnet, positive and negative polarity neutrons are accelerated in opposite directions and spatially separated due to the magnetic field gradient. Then, we extracted the one-spin component and analyzed the polarization degree by using a sextupole magnet and position-sensitive detector. As a result, very high neutron polarization degree P = 0.9993 +/- 0.0025 was obtained. Advantages of the quadrupole magnet as the neutron polarization device and its application to neutron scattering experiments are discussed. (c) 2007 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jul. 2007, [Reviewed]

Hierarchic structure of shish-kebab by neutron scattering in a wide Q range
Toshiji Kanaya; Go Matsuba; Yoshiko Ogino; Koji Nishida; Hirohiko M. Shimizu; Takenao Shinohara; Takayuki Oku; Junichi Suzuki; Toshiya Otomo, We performed small-angle neutron and X-ray scattering (SANS and SAXS) measurements on an elongated blend of low molecular weight deuterated polyethylene (PE) and high molecular weight hydrogenated one (97.2/2.8) in a very wide range of scattering vector of 1 x 10(-4)-3 A(-1) to elucidate hierarchic structure of the so-called shish-kebab. Comparing the SANS and SAXS data, we found that the hydrogenated high molecular weight PE formed a large and long object aligned along the elongation direction. The SANS data were analyzed in terms of the multicore-shell cylinder model, and we found that the long oriented structure had radius of similar to 1 mu m and length of similar to 12 mu m and included about three extended chain crystals with radius of similar to 45 A. We believe that this oriented long object with a relatively low aspect ratio of about 12:1, which is called the row structure in this paper, is a precursor formed from deformation of network of high molecular weight components due to entanglements., AMER CHEMICAL SOC
MACROMOLECULES, May 2007, [Reviewed]

Wide-q observation from 10(-4) to 2.0 A(-1) using a focusing and polarized neutron small-angle scattering spectrometer, SANS-J-II
Hiroki Iwase; Satoshi Koizumi; Jun-ichi Suzuki; Takayuki Oku; Hajime Sasao; Hirokazu Tanaka; Hirohiko M. Shimizu; Takeji Hashimoto, In order to extend an upper q-limit [q is the magnitude of the scattering vector q, defined by q = (4 pi/lambda)sin theta, where lambda and 2 theta are the wavelength and the scattering angle, respectively], high-angle He-3 sub-detectors were installed on a focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II) at JRR-3, Tokai, Japan. Consequently, the upper q-limit was improved from 0.2 to 2.0 angstrom(-1). To quantitatively discriminate spin incoherent scattering from hydrogen or to perform nuclear spin polarization contrast variation, a remanent supermirror analyser is also available on the high-angle sub-detector. By combining a focusing ultra-small-angle scattering, realised by compound and/or magnetic lens and high-resolution area detector, SANS-J-II is able to cover from 3 x 10(-4) to 2.0 angstrom(-1) (four orders of magnitude of q), which benefits investigation of hierarchically ordered systems, found widely in hard, soft and bio-materials., BLACKWELL PUBLISHING
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Apr. 2007, [Reviewed]

Focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II). The challenge of observation over length scales from an angstrorm to a micrometre
Satoshi Koizumi; Hiroki Iwase; Jun-ichi Suzuki; Takayuki Oku; Ryuhei Motokawa; Hajime Sasao; Hirokazu Tanaka; Daisuke Yamaguchi; Hirohiko M. Shimizu; Takeji Hashimoto, SANS-J (a pinhole small-angle neutron scattering spectrometer at research reactor JRR3, Tokai, Japan) was reconstructed as a focusing and polarized neutron small-angle scattering spectrometer (SANS-J-II). By employing focusing lenses of a biconcave MgF2 crystal or of a sextupole permanent magnet and a high-resolution photomultiplier, the minimum accessible magnitude of the scattering vector q(min) was improved from 3 x 10(-3) angstrom(-1) to an ultra-small-angle scattering (USAS) of 3 x 10(-4) angstrom(-1). Compared with a Bonse-Hart double-crystal method, the advantages of focusing USAS are the efficient detection of anisotropic USAS with an area detector, an improvement in q resolution Delta q/q at conventional magnitudes of the scattering vector q similar to 10(-3) angstrom(-1) and a gain in neutron flux in the conventional q region of q similar to 10(-3) angstrom(-1)., BLACKWELL PUBLISHING
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Apr. 2007, [Reviewed]

A focusing-geometry small-angle neutron scattering instrument with a magnetic neutron lens
Takayuki Oku; Hiroki Iwase; Takenao Shinohara; Satoru Yamada; Katsuya Hirota; Satoshi Koizumi; Jun-ichi Suzuki; Takeji Hashimoto; Hirohiko M. Shimizu, We have constructed a focusing-geometry small-angle neutron scattering (FSANS) instrument, SANS-J-II, with two kinds of neutron focusing device: a series of compound refractive lenses made of MgF2 and a magnetic neutron lens based on an extended Halbach-type sextupole magnet. In this study, we investigated the performance of the FSANS instrument with the magnetic neutron lens. The intensity distribution of a direct neutron beam focused on the detector plane by the magnetic neutron lens had a ratio of the peak height to the background level of similar to 6 x 10(4) for a polarized neutron beam with a polarization degree of similar to 0: 99. It is found that a minimum value of the measurable q range [where q is the modulus of the scattering vector and is defined as q = (4 pi / lambda) sin(theta /2), where theta is the scattering angle and lambda is the neutron wavelength], q(min), of 6.5 x 10(-4) angstrom(-1) can be achieved by the FSANS instrument with the magnetic neutron lens using neutrons with lambda = 6.6 angstrom and Delta lambda/lambda = 0.13 for the full width at half maximum., BLACKWELL PUBLISHING
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Apr. 2007, [Reviewed]

Focusing and polarized neutron ultra-small-angle scattering spectrometer (SANS-J-II) at Research Reactor JRR3, Japan
Satoshi Koizumi; Hiroki Iwase; Jun-ichi Suzuki; Takayuki Oku; Ryuhei Motokawa; Hajime Sasao; Hirokazu Tanaka; Daisuke Yamaguchi; Hirohiko M. Shimizu; Takeji Hashimoto, By employing focusing lenses of sextupole permanent magnet and biconcave MgF2 crystal, and high-resolution photomultiplier, SANS-J (pinhole small-angle neutron scattering spectrometer at research reactor JRR3, Tokai) was reconstructed to focusing and polarized neutron ultra-small-angle scattering spectrometer (SANS-J-II). Consequently, an accessible minimum wave number q(min) was improved from 3 x 10(-3) angstrom(-1) to 3 x 10(-4) angstrom(-1). Furthermore, we added He-3 sub-detectors with an analyzer super mirror at a sample position. With this setup, we perform polarization analysis at high q (> U angstrom(-1)) in order to quantitatively discriminate spin incoherent scattering from hydrogen or to perform spin contrast variation, by a dynamic nuclear polarization method (> 0.2 angstrom(-1)) (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Simulation study of neutron focusing effect on a pulsed sextupole magnetic lens using PHITS code
I. Mitsutake; Y. Kiyanagi; T. Kamiyama; K. Nitta; J. Suzuki; T. Oku; H. M. Shimizu, We have performed various simulation calculations for a pulsed sextupole magnetic lens to look for the best condition of focusing experiments, assuming conditions of the pulse magnetic lens now under construction. Here, we placed a slit between the pulsed neutron moderator and the neutron lens, in order to see the focusing effect clearly. For the simulation, we used PHITS code to know influences of the position of the slit on the intensity of focused neutron beam, the focal point, and the broadening of the focal point. Increase of the distance of the slit from the source resulted in the decrease of the peak intensity of neutron beam at the focal point. Full-width at half-maximum of the neutron distribution along the incident beam direction around the focal point, broadened with increasing the distance, and the focal distance also became longer. The intensity ratios defined by (intensity with magnetic field)/(intensity without magnetic field) also increased with decreasing the distance. Therefore, it is better to set a slit near the moderator. (c) 2006 Published by Elsevier B.V., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Development of a multichannel parabolic guide for thermal neutron beam focusing
Satoru Yamada; Takenao Shinohara; Hajime Sasao; Takayuki Oku; Jun-ichi Suzuki; Hideaki Matsue; Hirohiko M. Shimizu, We have developed a multichannel parabolic guide for thermal neutron beam focusing. The guide was designed with multichannel structure, seven channels in the present case, to focus a neutron beam with wide cross section effectively. The multichannel structure is made with parabolically bent NiC/Ti supermirrors with critical reflection angles in = 3.0 and 3.6 times as much as that of nickel and thickness of 0.55 mm. The guide consists of two focusing devices with each length of 900 mm, which are separated by a gap of 150 mm for neutron beta decay experiments. The focal length of the guide is 995 mm away from the exit of the guide. The cross section of the guide is 90 x 20 mm(2) at the entrance and 52.3 x 12.1 mm(2) at the exit. The guide was installed at a thermal neutron beam line for neutron-induced prompt gamma-ray analysis (PGA) of JRR-3M in JAEA with straight supermirror guides with in = 3.0. Focusing properties of the parabolic guide were measured at the focal point with a CCD imaging system and we obtained a gain of 9.6 and 4.1 in peak flux compared with those in cases of using the vacuum tube and the straight guide, respectively. The parabolic guide has been successfully used to enhance the efficacy of PGA and have also applied to neutron beta decay experiments. (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Development of neutron Anger-camera detector based on flatpanel PMT
Katsuya Hirota; Setsuo Satoh; Kenji Sakai; Takenao Shinohara; Kazuaki Ikeda; Kenji Mishima; Satoru Yamada; Takayuki Oku; Jun-ichi Suzuki; Michihiro Furusaka; Hirohiko M. Shimizu, A neutron scintillating detector and its data taking system have been developed for neutron scattering measurement. A 64-channel flatpanel photomultiplier is used for the Anger-camera method. The detection efficiency of gamma-ray background is very low in the use of the ZnS/(LiF)-Li-6 scintillator. The spatial resolution is less than 1 mm. The effective area of this detector is around 25 cm(2), and it is easy to expand it to a larger area with small dead space using the multi-photomultiplier tubes system. The fast DAQ system has 10-bit 100 MHz flash ADCs, FPGA chips and USB2.0 device. (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Thermal neutron refraction by material prism
Takenao Shinohara; Katsuya Hirota; Tomohiro Adachi; Kazuaki Ikeda; Hirohiko M. Shimizu; Jun-ichi Suzuki; Takayuki Oku, Neutron refractive optics is a powerful tool for beam focusing due to its large effective aperture compared to reflective optics. Because neutron refraction angle decreases with shorter wavelengths, the application of refractive optics has been restricted to the cold neutron range. To expand the applicable wavelength range, we have developed a new refractive optics using an amorphous perfluoropolymer. This refractive optics is composed of several hundred thin sheets, each of which has a large number of grooves on the top surface. The refraction experiment was performed at the H-8 beam port of KENS, and it was confirmed that the thermal neutron beam can be refracted using this material prism. (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Development of measurement system of neutron beta decay
Kenji Mishima; Satoru Yamada; Hiromi Sato; Katsuya Hirota; Takenao Shinohara; Takahiro Morishima; Jun-ichi Suzuki; Takayuki Oku; Hirohiko M. Shimizu, Precise measurement of neutron beta decay allows determining the coupling constant of weak interaction independent of any nuclear structure. We have developed measurement system of neutron beta decay at a thermal neutron beamline in JRR-3, JAEA. By using coincidence technique of two kinds of detectors, we have succeeded in detecting the signal of neutron beta decay with S/N of 0.63 aud count rate of 0.40cps. (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

A magnetic neutron lens based on an extended Halbach-type permanent sextupole magnet
Takayuki Oku; Satoru Yamada; Hajime Sasao; Jun-ichi Suzuki; Takenao Shinohara; Katsuya Hirota; Kazuaki Ikeda; Tsuyosi Tsuzaki; Yoshiaki Kiyanagi; Michihiro Furusaka; Hirohiko M. Shimizu, We have developed a magnetic neutron lens (MNL) based on an extended Halbach-type permanent sextupole magnet. The effective aperture size is 30 mm in diameter and the length is 2400 mm. The sextupole magnetic field distribution vertical bar B vertical bar = (G/2) r(2) with the gradient coefficient G = 10,660 +/- 530 T/m(2) are generated inside the magnet, where r is the distance from the magnet center axis. The neutron-focusing property is investigated by using pulsed polarized neutrons. The obtained results are discussed in comparison with numerical simulation results. The application to the focusing-geometry small-angle neutron scattering experiments is discussed. (c) 2006 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Nov. 2006, [Reviewed]

Nb3Sn sextupole magnet for neutron beam focusing
K. Okamoto; K. Nakamura; Y. Seki; M. Ohno; T. Takao; C. Mitsuda; N. Ohuchi; T. Shintomi; K. Tsuchiya; T. Adachi; H. Shimizu; T. Oku; J. Suzuki; S. Kimura; S. Hanai; M. Urata; I. Watanabe, In order to obtain a high-intensity neutron beam for neutron scattering experiments, strong sextupole magnets with large apertures are useful as a focusing element. We have started the development of a Nb3Sn sextupole magnet for this purpose. The design field strength of the sextupole is 12780 T/m(2) and the aperture of the. coil is 46 mm in diameter. As a first step of the development, three model coils have be en made in order to learn about Nb3Sn technology and to evaluate the fabrication techniques., Single-pole tests of these coils have been performed to assess the conductor stability and training behavior of the Nb3Sn coils. This paper describes the design of the magnet, the fabrication of the model coils and the results of single-pole tests., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2006, [Reviewed]

Development of MSGC with GLG method
NIKO H; FUJITA K; TAKAHASHI H; SIRITIPRUSSAMEE P; NAKAZAWA M; FURUSAKA M; KISHIMOTO S; INO T; SUZUKI J; OKU T; TOYOKAWA H, 応用物理学会放射線分科会
Ionizing radiation., 01 Apr. 2006

Transmission bender for polarizing neutrons
T Krist; J Peters; HM Shimizu; J Suzuki; T Oku, A system of a polarizing solid state bender and a collimator was built and tested. The bender consists of a stack of thin silicon wafers coated with polarizing FeCo-Si supermirrors. The stack is deflected in the middle by one wafer thickness. Inserted in an unpolarized neutron beam this device works as a spin splitter by transmitting the spin down component without any change in its flight path and reflecting the spin up component. With a collimator behind the bender it can be selected which one of the spin components is transmitted. In this way a transmission polarizer for neutrons with wavelengths above 4Angstrom was built which has a total length of less than 10cm. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Feb. 2005, [Reviewed]

Some experimental studies on time-of-flight radiography using a pulsed neutron source
Y Kiyanagi; N Sakamoto; H Iwasa; T Kamiyama; F Hiraga; S Sato; H Sagehashi; T Ino; M Furusaka; J Suzuki; A Gorin; Manuilov, I; A Ryazantsev; K Kuroda; K Sakai; F Tokanai; H Miyasaka; T Adachi; T Oku; K Ikeda; S Suzuki; K Morimoto; HM Shimizu, We are developing a fiber type two-dimentional (2-D) position-sensitive detector having a spatial resolution less than 0.5 mm in order to use it in the time-of-flight (TOF) measurements. The detector performance was examined, and some experiments on the TOF radiography were performed using this detector. The results indicated that the detector could be applied successfully to the TOF measurement and that the TOF radiography was very useful since it gave more informative data than those obtained by the conventional radiography using a broad energy band., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, Feb. 2005, [Reviewed]

Development of polarized neutron optics
HM Shimizu; T Oku; J Suzuki; M Furusaka; Y Kiyanagi, Neutron magnetic optics is a spin-selective optics and suitable for precise focusing since it is free from interactions with materials. We discuss its applications to measure the small angle neutron scattering in low-q regions. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Feb. 2005, [Reviewed]

A demonstration study of focusing geometry SANS using a magnetic lens
T Oku; J Suzuki; H Sasao; S Yamada; M Furusaka; T Adachi; T Shinohara; K Ikeda; HM Shimizu, A demonstration study of focusing geometry small-angle neutron scattering (FSANS) experiment was successfully performed using a superconducting sextupole magnet as a neutron focusing device and a polarized cold neutron beam. The obtained small-angle neutron scattering intensities from monodispersed SiO2 spherical particles were discussed in terms of the scattering function taking into account the q-resolution. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Feb. 2005, [Reviewed]

High intensity neutron spin flip chopper
T. Ebisawa; K. Soyama; D. Yamazaki; S. Tasaki; K. Sakai; T. Oku; R. Maruyama; M. Hino, We have proposed multi-stage spin flip chopper system to realize very high S/N ratio. Very high S/N ratios of about 3000 and 105 have been demonstrated for double and triple spin flip chopper systems, respectively. We here describe a double neutron spin flip chopper system applicable to pulsed source using polarizing bent guide tubes instead of simple magenetic mirrors, in order to obtain a high intensity and high S/N ratio. Simulation results show that it will realize spin flip chopper of high neutron intensity and S/N ratios. © 2005 Taylor &
Francis Ltd., {CrossRef} Test Account
Journal of Neutron Research, 2005, [Reviewed]

Boron based oxide scintillation glass for neutron detection
M Ishii; Y Kuwano; T Asai; S Asaba; M Kawamura; N Senguttuvan; T Hayashi; M Kobayashi; M Nikl; S Hosoya; K Sakai; T Adachi; T Oku; HM Shimizu, The luminescence property of Ce-doped oxide glass having B and Li with large absorption coefficient for neutron was investigated by optical transmittance, alpha particle, and neutron irradiation. The light output of the B2O3-Li2O:CeO2 glass system increased with the increase in B2O3 and CeO2. It was observed that the decay time which showed composition dependence varied in the range 30-45 ns. Although the light output by neutron irradiation is 9.2% of Li-glass, low density and high neutron absorption with short decay time make this new boron-based glass scintillator useful for neutron detection. (c) 2001 Elsevier Science. All rights reserved (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jan. 2005, [Reviewed]

Development of a neutron detector based on a position-sensitive photomultiplier
K Hirota; T Shinohara; K Ikeda; K Mishima; T Adachi; T Morishima; S Satoh; T Oku; S Yamada; H Sasao; J Suzuki; HM Shimizu, A neutron scintillation detector based on a position-sensitive photomultiplier has been developed for neutron spin echo and small angle neutron scattering measurements. This photomultiplier has good spatial resolution, less than 1 mm(2). The detection efficiency of gamma ray background is very low for using a thin ZnS/(LiF)-Li-6 scintillator. The effective area of this detector is around 60 cm(2)., ROYAL SOC CHEMISTRY
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2005, [Reviewed]

Preliminary results on development of a thin GSO scintillator for neutron science
JH Kaneko; N Susa; S Tsuchida; M Watanabe; S Miura; T Mizuno; Y Yamauchi; M Hashiba; T Oku; A Homma; F Fujita; T Ino; M Furusaka; T Sawamura; HM Shimizu; Y Kiyanagi, A thin GSO scintillator was developed aiming at applications for the neutron science. In order to fabricate a large and thin GSO scintillator in the future, fabrication was started from two types of GSO powders. Although several GSO films were fabricated by evaporation techniques, these films did not have luminescence in photo luminescence (PL) spectroscopy. Thus, these samples were annealed up to 1550degreesC. However, it resulted in no luminescence observation. In response to these results, GSO powders were directly annealed; a phenomenon looking like melting and sintering were observed for Gd2Si2O7:Ce at a temperature higher than 1500degreesC. This sample was quasi-transparent and had luminescence at 405 nm in PL spectrum. In addition, this sample was tougher than a GSO single crystal. In conclusion, the prospect of fabrication of a thin GSO scintillator by combination of annealing and mechanical polishing was obtained. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Fabrication process and system for neutron refractive optics
H Ohmori; W Lin; J Guo; Y Uehara; S Morita; N Mitsuishi; K Yoshikawa; M Ohmori; K Ikeda; T Oku; T Adachi; HM Shimizu, The authors developed a new fabrication process and system for neutron refractive optics, and propose a new design for Fresnel lens refracting cold-neutron beam in this paper. Applying the ultraprecision electrolytic in-process dressing (ELID) micro-grinding technique using cast-iron-bonded diamond wheels with edges sharpened by electrical and mechanical processes, the authors successfully fabricated the required element with sharp and smooth V-faced Fresnel structures using quartz glass or MgF2 glass. The relationship of the form accuracy of the fabricated Fresnel lens and changes in grinding wheel shape is also discussed. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Development of a compound focusing lens: improvement of signal-noise ratio
T Adachi; K Ikeda; T Shinohara; K Hirota; T Oku; J Suzuki; H Sato; K Hoshino; J Guo; W Lin; H Ohmori; HM Shimizu; K Sakai; KC Littrell; CK Loong, We proposed a method to improve signal-noise ratio of the Fresnel-type neutron lens. The Gd mask of concentric circle thin layer reduced 80% noise, at the best, due to the Fresnel-type lens shape. As the transmission for 1.1 nm neutrons decreased from 0.83 to 0.79 by using the Gd mask, the loss was 0.04. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Nb3Sn coil R&D of a superconducting sextupole magnet for neutron refractive optics device
Watanabe, I; S Hanai; M Kyoto; T Shintomi; K Tsuchiya; J Suzuki; T Oku; T Adachi; HM Shimizu, A Nb3Sn coil for a superconducting sextupole magnet with 40 mm in bore diameter to be used as a neutron refractive optics device was manufactured. The length of the coil is 1 m and the thickness is 23 mm with the saddle shape at the ends. The suspended angle of the coil is 20degrees. The current 930 A was achieved at 4.2 K and the current density was 1189 A/m mm(2). The strength of the magnetic field gradient G = 2B(r)/r(2) (r: distance from the center axis of the sextupole magnet) at this current is estimated to be 21,000 T/m(2). (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Monte-Carlo simulation codes development and their applications to neutron optical devices and neutron scattering instruments
M Furusaka; K Niita; S Suzuki; K Fujita; J Suzuki; T Oku; HM Shimizu; T Otomo; M Misawa, We incorporated magnetic and gravitational interactions into the neutronic code "PHITS" developed at JAERI, which is the unified code of the high-energy particle-transport code NMTC/JAERI and MCNP-type low energy code. Using the code, inelastic and multiple-scattering effects in water sample for SANS experiment was demonstrated. Numerical simulation of focusing SANS instrument that has a sextupole magnet has been conducted, and the spin-flip processes in the non-adiabatic region along the central region of the magnet were clearly observed. Gravitational effects were also evaluated. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

A test of track imaging by cold neutron using optical capillary gas proportional counter
F Tokanai; S Motegi; H Sakurai; S Gunji; JI Suzuki; T Oku, We have preliminarily investigated the performance of the optical capillary gas proportional counter (CGPC) to obtain the absorption point of cold neutron at JRR-3 in JAERI. The CGPC with a gas mixture of He-3 + 8%CH4 + 2%TMA at 1.1atm was operated at the gas gain of up to 10 000. A track image produced from a nuclear reaction between a cold neutron and 3 He was a straight line. For the track image, the triton and the proton were identified. The identification indicates that the neutron absorption point can precisely determine from the track image. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Luminescence of doped lithium tetraborate single crystals and glass
M Ishii; Y Kuwano; S Asaba; T Asai; M Kawamura; N Senguttuvan; T Hayashi; M Koboyashi; M Nikl; S Hosoya; K Sakai; T Adachi; T Oku; HM Shimizu, Lithium tetraborate single crystal doped with Cu seems to be a promising new material for neutron detection. With the presence of Li and B, both having large cross section for neutron capture, efficient neutron detection is expected with high-energy deposits. In the present work, we chose 14 different dopants from Ia, Ib, IIIa, IVa and Va groups in the periodic table besides the rare earth Ce ion. The crystals were grown to a size of 20 mm in diameter and 70 mm in length by vertical Bridgman method. The grown crystals were characterized by optical transmittance and excitation-emission studies. Transmittance and emission characteristics of Ce-doped lithium borate glass are also reported. (C) 2004 Elsevier Ltd. All rights reserved., PERGAMON-ELSEVIER SCIENCE LTD
RADIATION MEASUREMENTS, Aug. 2004, [Reviewed]

Development of Ni/Ti supermirrors with large-m and a curved surface
K Ikeda; T Adachi; T Shinohara; T Morishima; K Hirota; Y Takizawa; H Sato; HM Shimizu; M Hino; S Tasaki; T Oku; K Soyama, Nickel/titanium supermirrors with critical reflection angles theta(c) of m = 3-5 times the critical angle of total reflection of natural Ni theta(c)(Ni) were fabricated on silicon substrates 3 in. in diameter and 3 mm in thickness by a DC magnetron C sputtering system using the facing targets technique, and the neutron reflectivity of the supermirrors was evaluated for cold neutrons of 8.8 Angstrom in wavelength. The supermirrors with 532 layers and with 468 layers achieved a reflectivity of 84% and 53% at their theta(c) of in = 2.9 and 3.7, respectively, while supermirrors with more than 630 layers had reduced reflectivity at angles smaller than theta(c). This reduction resulted from the formation of a non-multilayered pillar structure due to the growth of interface roughness between layers. Using supermirrors with in not more than 3, we designed a paraboloidal focusing mirror and proposed a prototype to obtain approximately 5 times the utilizable neutrons at the focal point for cold neutrons of 8 Angstrom. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Neutron optics and a superconducting magnetic lens for small-angle neutron scattering with focusing geometry
HM Shimizu; T Adachi; M Furusaka; Y Kiyanagi; T Oku; H Sasao; T Shinohara; J Suzuki, Neutron optics has a potential to remarkably improve the performance of neutron scattering instruments. A superconducting sextupole magnet was constructed and characterized. The application of the magnetic optics to the small-angle neutron scattering with the focusing geometry is discussed. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Feasibility study on application of a magnetic neutron lens to SANS experiments
T Oku; J Suzuki; H Sasao; T Adachi; T Shinohara; K Ikeda; T Morishima; K Sakai; Y Kiyanagi; M Furusaka; HM Shimizu, The neutron focusing effect of a superconducting sextupole magnet has been investigated using unpolarized and polarized cold neutrons. The feasibility on the application of the magnetic lens to small-angle neutron scattering experiments are discussed. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Development of a magnetic focusing device for pulsed neutrons
J Suzuki; T Oku; T Adachi; HM Shimizu; Y Kiyanagi; T Kamiyama; F Hiraga; H Iwasa; K Sato; M Furusaka, Steady sextupole magnet has a function as neutron beam focusing device with chromatic aberration. In order to solve the chromatic aberration we have developed a pulsed sextupole electromagnet for focusing pulsed neutrons. In the magnet, the gradient of magnetic field is controlled in time to the neutron passage through the magnet, as faster neutrons feel a stronger magnetic field gradient than slower neutrons. The idea, design, current status and application of the magnet are described. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Development of an optical device for thermal neutrons by amorphous perfluoropolymer
T Shinohara; T Adachi; K Ikeda; T Morishima; K Hirota; HM Shimizu; T Oku; J Suzuki, We have developed a prototype of neutron prism made of an amorphous perfluoropolymer CYTOP. This prism was composed of 100 thin sheets with a series of narrow "V"-shaped grooves at one side of each sheet. The small-angle neutron scattering (SANS) intensity of CYTOP was very small and was constant. The refraction effect study using cold neutrons with the wavelength of 6-12 Angstrom revealed that the refracting angle by the prism for 8 Angstrom neutrons was 1.5 mrad. According to these results, it is possible to realize a refractive device for thermal neutrons using amorphous perfluoropolymer CYTOP with more sheets and some refinements in the shape and the film quality. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Development of position-sensitive neutron detector based on scintillator
K Sakai; K Hirota; T Adachi; K Ikeda; T Morishima; HM Shimizu; M Furusaka; S Sato; Y Kiyanagi; N Sakamoto; T Sakuma; T Oku; J Suzuki; K Littrell; CK Loong; JB Czirr; TK McKnight, For evaluating neutron optical devices, we have developed the two-dimensional position-sensitive neutron detectors (PSNTD) of the crossing fibre array type. In parallel, we have studied the PSNDs of the direct coupling type with flat panel photomultiplier tubes for responding to various spatial resolutions with high detection efficiency. This paper views and reports on the recent status of development of PSNDs based on neutron scintillators in neutron optics group. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Formation of very short pulse by neutron spin flip chopper for J-PARC
T Ebisawa; K Soyama; D Yamazaki; S Tasaki; K Sakai; T Oku; R Maruyama; M Hino, We have developed neutron spin flip choppers with high S/N ratio and high intensity for pulsed sources using multistage spin flip choppers. It is not easy for us to obtain a very short neutron pulse less than 10 mus using a spin flip chopper, due to the time constant L/R in the normal LR circuit. We will discuss a method obtaining a very short neutron pulse applying the modified push-pull circuit proposed by Ito and Takahashi [4] to the double spin flip chopper with polarizing guides. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Aug. 2004, [Reviewed]

Possible application of compound Fresnel lens for neutron beam focusing
T. Adachi; K. Ikeda; T. Oku; J. Guo; W. Lin; H. Ohmori; T. Morishima; H. M. Shimizu; K. Sakai; J. Suzuki; K. C. Littrell; C. -K. Loong, We have developed a Fresnel-type focusing device for cold neutrons fabricated using single crystals of magnesium fluoride. This stacked-lens device using 50 elements (with 50 beam-bending interfaces) demonstrated a focal length of 5 m with a good transmission of 0.829 for 1: 14 nm neutrons. The focused beam was 5 times more intense than a beam of the same spot size with the same final flight path length produced with the traditional pinhole collimation. The background-scattering noise from lens was an order of magnitude larger than that of the traditional pinhole collimation in the momentum range of 0.01-0.05 nm(-1); almost 10(-3) of focused direct beam at the lowest momentum transfers measurable. This device produced an intensity gain in measured SANS data of more than 10 times when compared with the conventional pinhole geometry with the same minimum momentum transfer. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jul. 2004, [Reviewed]

Recent development of position-sensitive neutron detectors employing wavelength-shifting cross-fiber
K. Sakai; T. Adachi; T. Oku; K. Ikeda; T. Morishima; H. M. Shimizu; M. Fusrusaka; T. Ino; S. Sato; Y. Kiyanagi; N. Sakamoto; T. Sakuma; J. Suzuki; K. Listtrell; C. -K. Loong; R. Goyette, For evaluating neutron optical devices, we have designed and tested two-dimensional position-sensitive neutron detectors (PSND) which employ two wavelength-shifting fiber arrays optically coupled to a scintillator plate. Feasibility on applications of the PSND having a 50 x 50 mm(2) sensitive area and a pixel size of 0.4 x 0.4 mm(2) has been tested at pulsed neutron sources. While, for realizing the large sensitive area, another PSND having a 128 x 128 mm(2) sensitive area and a 0.5 x 0.5 mm(2) pixel size with a dynode coding technique were developed and tested. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jul. 2004, [Reviewed]

Very low energy neutron radiography with neutron energy selection system for variable image contrast
Y Kawabata; T Nakano; M Hino; T Oku; J Susuki; U Matsushima, The neutron radiography with monochromatic neutron beam generated by a velocity selector is performed in NOP port, C3-1-2, JRR-3M. The neutron wavelengthes for the transmission experiments were 0.8, 1.2 and 2.6 nm. It shows the change of the contrast according to the neutron wavelength and the possibility to identify the materials in samples from neutron transmission images., TRANS TECH PUBLICATIONS LTD
ADVANCES IN NONDESTRUCTIVE EVALUATION, PT 1-3, 2004, [Reviewed]

Growth of Cu-doped Li2B4O7 single crystals by vertical Bridgman method and their characterization
M Ishii; Y Kuwano; T Asai; N Senguttuvan; T Hayashi; M Kobayashi; T Oku; K Sakai; T Adachi; HM Shimizu; J Suzuki, Lithium tetra borate (Li2B4O7, LBO) single crystals with Cu as dopant have been grown by the vertical Bridgman method. A special crucible arrangement with three separate crucibles welded together was used for the crystal growth. Cu2O was added at different concentrations varying in the range 0.0025-0.1 wt%. The grown crystals were cut and polished for observation under optical and scanning electron microscopes. Optical micrograph showed presence of voids, which propagate along the growth direction. Scanning electron microscope coupled with energy dispersive X-ray analyzer showed segregation of Cu in these voids, which might be due to constitutional supercooling. Optical transmittance measured across 5mm thick samples indicated that the absorption around 240nm increased with the increase in Cu concentration. Excitation-emission measurement was carried out to estimate peak emission and excitation wavelengths. The dependence of Cu concentration in LBO on the emission intensity has also been evaluated. (C) 2003 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
JOURNAL OF CRYSTAL GROWTH, Sep. 2003, [Reviewed]

Neutron spin flip chopper with very high S/N ratio for pulsed source
S Tasaki; T Ebisawa; S Kawakami; R Maruyama; K Sakai; T Oku; D Yamazaki; K Soyama; M Hino; T Kawai, We propose a multiple neutron spin flip chopper system to improve considerably its S/N ratio. Evaluations of a double spin flip chopper system give a high S/N ratio and its experimental results demonstrated good performance. Multiple spin flip chopper systems with high S/N ratio will be applicable to a direct geometry inelastic spectrometer for pulsed source instead of mechanical choppers. (C) 2003 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jul. 2003, [Reviewed]

Development of a spin flipper for an application of a neutron magnetic device
T Oku; K Sakai; T Adachi; K Ikeda; HM Shimizu; R Maruyama; M Hino; S Tasaki; Y Kiyanagi; T Kamiyama; H Iwasa; K Sasaki; T Ino; M Furusaka; D Yamazaki; J Suzuki; T Ebisawa, We have developed a radio-frequency gradient spin flipper for the effective utilization of the focused and polarized neutron beam obtained using a superconducting sextupole magnet developed for the practical application in the neutron-scattering experiment. The flipper was designed to be effective for the neutron beam with wavelengths longer than 4 Angstrom and the cross section of 50 mm in diameter. The flipper was tested using polarized,cold neutrons, and good performance was obtained. (C) 2003 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jul. 2003, [Reviewed]

Development of a high-resolution scintillator-based area detector for neutrons
N Sakamoto; Y Kiyanagi; S Sato; H Sagehashi; M Furusaka; J Suzuki; KC Littrell; CK Loong; A Gorin; Manuilov, I; A Ryazantsev; K Kuroda; K Sakai; F Tokanai; T Adachi; T Oku; K Ikeda; H Miyasaka; S Suzuki; K Morimoto; HM Shimizu, We applied a scintillator-based area detector to the neutron time-of-flight method by developing a new electronics system for this detector, which detector consists of a thin plate of ZnS(Ag)+6Li scintillator optically coupled to wavelength shifter. The spatial resolution was about 0.4 mm which is consistent with a fiber width of 0.4 mm. The detection efficiency for thermal neutrons was about 6%. A good-resolution radiographic-image as a function of flight time was obtained., BLACKWELL MUNKSGAARD
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Jun. 2003, [Reviewed]

Cold neutron beam focusing by a superconducting sextupole magnet
J Suzuki; T Oku; T Adachi; HM Shimizu; T Hirumachi; T Tsuchihashi; Watanabe, I, We have developed a superconducting sextupole magnet with about 50 mm in bore diameter to focus cold neutron beams with large cross-section and have investigated its focusing and polarizing effect. Large gain in neutron intensity and high neutron polarization have been obtained by numerical simulation for highly collimated neutron beams. We discuss applications of this magnet for small-angle neutron scattering experiments., BLACKWELL MUNKSGAARD
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Jun. 2003, [Reviewed]

Recent progress in the development of concave Fresnel lenses for neutrons
T Adachi; K Ikeda; T Oku; K Sakai; S Suzuki; J Suzuki; HM Shimizu; KC Littrell; CK Loong; W Lin; J Guo; N Mitsuishi; S Morita; H Ohmori, The performance of a Fresnel-type compound refractive lens for focusing cold neutrons was evaluated. The lens consists of 44 pieces of compound Fresnel-type refractive lenses made of MgF2 single crystals. The intensity profile of the diffracted neutrons measured over the wavelengths of 9-14 Angstrom was compared with the results of numerical simulations. Good neutron transmission of 0.85 for 9 Angstrom neutrons and a focal length of 3.4 m for 16 Angstrom neutrons were achieved., BLACKWELL MUNKSGAARD
JOURNAL OF APPLIED CRYSTALLOGRAPHY, Jun. 2003, [Reviewed]

Development of neutron optical devices by a curved supermirror　　　　　　　　　　　　　　　
K. Ikeda; T. Adachi; H. M. Shimizu; H. Sato; Y. Takizawa; T. Morishima; T. Shinohara; T. Oku; K. Sakai; Y. Kawabata; M. Hino; S. Tasaki
KURRI Progress Report, Apr. 2003

Evaluation of the integrity of divertor models of tungsten or SiC/SiC composites joined with copper
A. Kurumada; Y. Imamura; Y. Tomota; T. Oku; Y. Kubota; N. Noda, From viewpoints of thermal shock resistance, control of plasma particles, low activation, thermal efficiency and so on, it is planned to use heat-resisting metals and ceramic composites as plasma facing materials for the next experimental, demonstrative and commercial fusion reactors. In this study, a tungsten material and SiC/SiC composites were joined with oxygen free copper as a heat sink material using foils of titanium and copper, and a molybdenum plate was also inserted for the relaxation of residual thermal stresses in the case of a SiC/SiC-copper joint. The divertor model specimens using the joining materials were manufactured and heat load tests were carried out. Thermal cracks in the tungsten material and delaminating cracks at the joining boundary of SiC/SiC composites were observed during several heat load tests. Therefore, tungsten and SiC/SiC composites need to be improved further with respect to the thermal shock resistance, thermal conductivity and fracture toughness. © 2003 Elsevier Science B.V. All rights reserved.
Journal of Nuclear Materials, Mar. 2003, [Reviewed]

Development of neutron compound refractive optics: a progress report
T Adachi; T Oku; S Morita; H Ohmori; Y Takizawa; HM Shimizu; J Suzuki; CK Loong; KC Littrell; R Goyette, We have designed and fabricated a compound refractive prism made of MgF2 single-crystal elements. The performance of this prism in refracting neutrons of wavelengths from 2 to 15 Angstrom was determined by time-of-flight transmission measurements. The total refractive angle was established as being 2.8 mrad for 10-Angstrom neutrons, and the transmission was 80%-98% for cold neutrons according to wavelength., SPRINGER-VERLAG
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Dec. 2002, [Reviewed]

Development of a two-dimensional imaging detector based on a neutron scintillator with wavelength-shifting fibers
K Sakai; T Adachi; T Oku; A Gorin; T Ino; K Kuroda; Manuilov, I; K Morimoto; A Ryazantsev; HM Shimizu; J Suzuki; F Tokanai, For evaluating neutron optical devices, a two-dimensional (213) detector based on a neutron scintillator with wavelength-shifting fibers has been developed at RIKEN. We have investigated a ZnS(Ag)+LiF and a Li glass plate as neutron scintillators with the coding technique for realizing the large sensitive area of 50 x 50 mm(2). After fabricating the 2D detector, its performance was tested using cold neutrons at JAERI. As a result, a spatial resolution of similar to 1.0 mm was obtained., SPRINGER-VERLAG
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Dec. 2002, [Reviewed]

Neutron-beam control using a magnetic doublet
T Oku; T Adachi; K Sakai; HM Shimizu; K Sasaki; H Iwasa; T Kamiyama; Y Kiyanagi; T Ino; M Furusaka; J Suzuki; M Hino; S Tasaki; T Ebisawa, A sextupole magnetic field exerts focusing and defocusing effects on neutrons depending on the neutron-spin states. By combining both effects, we can realize a magnetic doublet which enables control of the neutron-beam size and divergence with high degrees of freedom. We constructed a magnetic doublet with two permanent sextupole magnets and a spin flipper, and experimentally investigated its function using pulsed neutrons., SPRINGER-VERLAG
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, Dec. 2002, [Reviewed]

Development of superconducting tunnel junctions as an energy-dispersive detector for UV and visible photons
C Otani; Y Takizawa; H Sato; K Ikeda; T Ikeda; K Kawai; H Miyasaka; T Morishima; T Oku; S Shiki; HM Shimizu; H Watanabe, We are developing an energy-dispersive detector for UV and visible photons that uses superconducting tunnel junctions (STJs) with Al trapping layers. As a first step to achieve this, we evaluated the performance of the detector for extreme ultraviolet (EUV) photons by using a synchrotron radiation facility. We achieved an energy resolution of FWHM = 17.8 +/- 0.6 eV (including electrical noise of 17.6 +/- 0.2 eV) for 55 eV EUV photons with a 100 x 100 mum(2) STJ: The electrical noise was the main component of the energy resolution. We achieved the electrical noise of FWHM = 2.1 +/- 0.1 eV for a 20 x 20 mum(2) STJ by replacing the cables connecting the STJ to a preamplifier operated at room temperature. A stronger signal resulting from a thinner tunnel barrier will lead to better energy resolution for detecting UV and visible photons. (C) 2002 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Aug. 2002, [Reviewed]

X-ray spectroscopy in atomic collision experiment using superconducting tunnel junctions
T Ikeda; Y Nakai; C Otani; H Sato; H Oyama; Y Kanai; Y Takizawa; Y Iwai; Y Morishita; T Oku; N Oshima; H Watanabe; H Miyasaka; K Kawai; H Kato; HM Shimizu; Y Yamazaki, A superconducting tunnel junction (STJ) is a newly developed X-ray detector which has advantages of not only high energy-resolution but also timing information and high counting-rates. The STJ fabricated in RIKEN has a layered structure of Nb (200 nm-thick, lower electrode)/Al (50 nm)/AlOx/Al (50 nm)Nb (150 nm, upper electrode). Its sensitive region has an area of 100 X 100 mum(2). The output signals were amplified by either a charge-sensitive amplifier or a SQUID amplifier. We used the STJ to measure X-rays emitted in collisions of highly charged ions with various solid targets. The ions used were Ne, 0 and Ar of 10 kV/q extracted from an ECR ion source at RIKEN. The X-ray spectra from 500 to 900 eV were obtained with an energy-resolution of 20-30 eV at a counting-rate higher than 500 counts/s. (C) 2002 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Aug. 2002, [Reviewed]

Crystal growth and luminescence properties of Li2B4O7 single crystals doped with Ce, In, Ni, Cu and Ti ions
N Senguttuvan; M Ishii; M Shimoyama; M Kobayashi; N Tsutsui; M Nikl; M Dusek; HM Shimizu; T Oku; T Adachi; K Sakai; J Suzuki, Li2B4O7 (LBO) is considered to be one of the useful materials for neutron detection because it contains Li and B, which possess large neutron capture cross-section isotopes. In the present study, we report crystal growth of LBO doped with Ce, In, Ni, Cu. and Ti and some studies on their luminescent properties. Crystals were grown by the Bridgman method using Pt crucibles from the mixture of LBO with 0.5 wt% of In2O3, NiO, CuO and TiO2 CeO2 was added at 0.1, 1.0 and 2.0 wt% and the crystals were grown in one experiment. Though the crystals doped with Cc were not transparent except some small areas, the compound showed strong emission at 375 nm for two excitation peaks at 270 and 320 nm. The dopant Cc has not entered well into LBO and the transparent area of the crystal did not show any emission. The crystals grown with In2O3 and TiO2 also had lot of segregation with little transparency. The crystals grown with NiO and CuO were found to be highly transparent and clear except some area. The transmittance measured at clear area showed short wavelength cut-off at about 220 nm for the case of NiO doping and at about 200 nm for the case of CuO doping (the cut-off for pure LBO is 167 nm). There were absorption peaks at 440, 500 and 560 nm for Ni-doped LBO and at 240, 255 and 310 nm for Cu doping. Among these two crystals, Cu-doped LBO showed intense emission at 360 nm for the excitation at 245 nm. (C) 2002 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jun. 2002, [Reviewed]

High-sensitivity high-resolution dual-function signal and time digitizer
S Sarwana; D Gupta; AF Kirichenko; T Oku; C Otani; H Sato; HM Shimizu, We have developed a dual-function high sensitivity/high-resolution digitizer. It consists of a superconducting digital integrated circuit, which can operate both as a time-to-digital converter (TDC) and a flux counting analog-to-digital converter (ADC). The TDC has a 30 ps multihit time resolution. The ADC has been designed with a superconducting quantum interference device based detector for a 1 muA full scale range. This digitizer is extremely useful in many applications, e.g., for time-of-flight measurements, or as a radiation resistant, low-noise, low-power ADC for detector readout. (C) 2002 American Institute of Physics., AMER INST PHYSICS
APPLIED PHYSICS LETTERS, Mar. 2002, [Reviewed]

Development of scintillation imaging device for cold neutrons
A Gorin; K Kuroda; Manuilov, I; K Morimoto; T Oku; A Ryazantsev; HM Shimizu; J Suzuki; F Tokanai, As an application of the wavelength-shifting (WLS) fiber technique recently developed in the field of high-energy physics, a novel type of imaging device for neutrons has been successfully investigated; a space resolution of I mm FWHM with detection efficiency of 55% for 10 Angstrom neutrons has been experimentally confirmed with a prototype made of a 0.5-mm-thick ZnS(Ag) + (LiF)-Li-6 scintillator plate optically coupled to WLS fiber arrays. In addition to promising results obtained in this study, its simple structure and reliable operation allow us to foresee a new generation of imaging devices to meet the increasing demand for large-area and high space-resolution imaging devices for several new projects on spallation neutron sources in the world. (C) 2002 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Mar. 2002, [Reviewed]

Development of superconducting tunnel junctions for EUV detectors
Y Takizawa; T Ikeda; T Oku; C Otani; K Kawai; H Sato; HM Shimizu; H Mikami; H Miyasaka; H Watanabe, Superconducting tunnel junctions (STJs) are applicable to as photon detectors with an energy resolution and a high photon-counting rate. The absorption of a photon in the superconductor of the STJ generates a number of quasiparticles that is proportional to the photon energy. Especially for soft X-ray and extreme ultraviolet (EUV) applications, STJs have good performance because of their high absorption efficiency below 1 keV. We are developing an energy-dispersive photon detector for EUV radiation using STJs with Al trapping layers. We evaluated the performance of the detector for EUV photons by using the Synchrotron Facility at KEK-PF in Tsukuba, Japan. We achieved an energy resolution of FWHM=18 eV (including the external noise of 17.6 eV) for 55 eV EUV photons with a 100 X 100 mum(2) STJ. We present details of the junction design and discuss our experiments and the results., WORLD SCIENTIFIC PUBL CO PTE LTD
SURFACE REVIEW AND LETTERS, Feb. 2002, [Reviewed]

スピンエコー法を用いた極小角散乱測定:その原理と可能性
奥 隆之; 安達 智宏; 清水 裕彦, The Japanese Society for Neutron Science
波紋, 2002

Neutron beam control devices
Oku Takayuki; Adachi Tomohiro; Ikeda Kazuaki, The Japanese Society for Neutron Science
hamon, 2002

Development of superconducting tunnel junctions as energy-dispersive detectors for EUV radiation
H Sato; T Ikeda; T Oku; C Otani; K Kawai; HM Shimizu; Y Takizawa; H Miyasaka; H Watanabe, An energy-dispersive detector of extreme ultraviolet (EUV) photons that uses superconducting tunnel junctions (STJs) is being developed. The performance of the STJs for detecting EUV photons was evaluated at a synchrotron radiation facility. An energy resolution of 17.8 +/- 0.6 eV in FWHM (including external noise of 17.6 +/- 0.2 eV) for 55 eV EUV photons was obtained with a 100 x 100 mum(2) STJ., AMER INST PHYSICS
LOW TEMPERATURE DETECTORS, 2002, [Reviewed]

Development of neutron optical devices
HM Shimizu; T Oku; T Adachi, Recent results on the development of the neutron optical devices utilizing the neutron refraction in an inhomogeneous magnetic field and in the material surface are described. (C) 2002 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B-CONDENSED MATTER, Jan. 2002, [Reviewed]

Development of a Fresnel lens for cold neutrons based on neutron refractive optics
T Oku; S Morita; S Moriyasu; Y Yamagata; H Ohmori; Y Takizawa; HM Shimizu; T Hirota; Y Kiyanagi; T Ino; M Furusaka; J Suzuki, We have developed compound refractive lenses (CRLs) fur cold neutrons, which are made of vitreous silica and have an effective potential of (90.1-2.7 x 10(-4)i) neV. In the case of compound refractive optics, neutron absorption by the material deteriorates lens performance. Thus, to prevent an increase in neutron absorption with increasing beam size, we have developed Fresnel lenses using the electrolytic in-process dressing grinding technique. The lens characteristics were carefully investigated with experimental and numerical simulation studies. The lenses functioned as a neutron focusing lens, and the focal length of 14 m was obtained with a 44-element series of the Fresnel lenses for 10 Angstrom neutrons. Moreover, good neutron transmission of 0.65 for 15 Angstrom neutrons was obtained due to the shape effect. According to comprehensive analysis of the obtained results, it is possible to realize a CRL for practical use by choosing 3 suitable lens shape and material. (C) 2001 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2001, [Reviewed]

Development of superconducting tunnel junctions for ultra soft X-ray detectors
Y Takizawa; T Ikeda; T Oku; C Otani; K Kawai; H Sato; HM Shimizu; H Miyasaka; H Watanabe; W Ootani; H Akou; H Nakagawa; M Aoyagi; T Taino, Nb-based superconducting tunnel junctions (STJs) with Al trapping layers have been developed for X-ray detectors. One applications for STJs is a low energy radiation detector having energy resolution and a high photon counting rate. STJs have good potential in the band of energies from 40 eV up to 1keV, because STJs materials have good absorbing properties in this region. The energy resolution was measured by using the Photon Factory beamline BL-12A of High Energy Accelerator Research Organization (KEK) in Japan, a nd for 200 eV photon, It eV Full Width Half at Half Maximum (FWHM) with a 20 X 20 mu m(2) junction were achieved. In this article, the fabrication technique and preliminary results of measuring the response for this band of energies are reported., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2001, [Reviewed]

A microstrip-coil integration on superconducting tunnel junctions for X-ray detection
T Taino; H Nakagawa; M Aoyagi; H Sato; H Akoh; K Maehata; K Ishibashi; H Sato; T Ikeda; C Otani; W Ootani; T Oku; H Kato; K Kawai; HM Shimizu; Y Takizawa; H Miyasaka; H Watanabe, We report the first demonstration of X-ray detection by using a Superconducting Tunnel Junction (STJ) with a microstrip-coil, The STJ was fabricated based on Nb/AYAlO(x)/Nb integration process technology using a 2(m)(mu) design rule. Magnetic field was applied into the STJ by the microstrip-coil to suppress the de Josephson current instead of the conventional electromagnet, The output waveform was successfully observed by irradiation of 5.9 keV X-ray under a condition of microstrip-coil current of 20 mA at 0.4 K., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2001, [Reviewed]

Spectral features of substrate phonon events obtained by illuminating superconducting tunnel junctions with X-rays
C Otani; T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; W Ootani; H Sato; HM Shimizu; Y Takizawa; H Watanabe; H Nakagawa; H Akoh; M Aoyagi; T Taino, The pulse height spectra of the substrate phonon events obtained with superconducting tunnel junctions (STJs) were examined. We compared the spectra for STJs with and without a 50-nm-thick buffer layer of aluminum-oxide on the sapphire substrate under X-ray illumination, We found that the spectral difference was concentrated in the high-energy tail of the component, corresponding to the events absorbed within a thin skin. The effective thickness of this skin was estimated to be about 3 mum by using the amount of difference in the spectra. We explain that the spectral difference could be caused by the selective attenuation of high-frequency phonons in the substrate and buffer layer., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2001, [Reviewed]

Detection of heavy ions using Nb-based superconducting tunnel junction
H Sato; T Ikeda; K Kawai; H Miyasaka; T Oku; W Ootani; C Otani; HM Shimizu; Y Takizawa; H Watanabe; K Morimoto; F Tokanai; H Akoh; H Nakagawa; M Aoyagi; T Taino, The superconducting tunnel junction (STJ) is one of the most promising devices to use as a fast detector for heavy ions. The energy deposited due to the passage of a heavy ion through an STJ forms a region called a hot spot, where the superconductivity of the region is broken. As a result, a reduction of the critical current (I-c) in the STJ occurs. If the bias current exceeds this reduced I-c, the output voltage from the STJ switches from 0 V to its gap voltage, which is recognizable as a signal due to the heavy ion passage. Nb-based STJs were fabricated for this heavy ion detector and an experiment was performed at the RIKEN Ring Cyclotron Facility to investigate the response to heavy ions, Instantaneous switching to the voltage state of the STJ in response to the decrease in I-c induced by a heavy ion beam was successfully observed by introducing Ar-40 particles With a kinetic energy of 95 MeV/nucleon into the STJ., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Mar. 2001

Detection of heavy ions by a superconducting tunnel junction
H Sato; T Ikeda; K Kawai; H Miyasaka; T Oku; W Ootani; C Otani; HM Shimizu; Y Takizawa; H Watanabe; K Morimoto; F Tokanai, Instantaneous switching to the voltage state of a superconducting tunnel junction (STS) following a decrease in the critical current induced by a heavy ion beam was observed by introducing Ar-40 particles with a kinetic energy of 95 MeV/nucleon into an Nb/Al-AlOx/Nb STJ. The particle detection by using this rapid switching of STJ could realize fast timing measurements at the level of ps. (C) 2001 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Feb. 2001, [Reviewed]

A High-resolution X-ray Detection System using STJ and SQUID Amplifier
Tokihiro Ikeda; H. Kato; H. Sato; K. Kawai; H. Miyasaka; T. Oku; W. Ootani; C. Otani; H. M. Shimizu; Y. Takizawa; H. Watanabe; H. Nakagawa; H. Akoh; M. Aoyagi; T. Taino
IEEE Transactions on Applied Superconductivity, 2001, [Reviewed]

Development of neuron compound lens and prism based on neutron refractive optics
T Adachi; T Oku; S Morita; S Moriyasu; Y Yamagata; H Ohmori; Y Takizawa; H Shimizu; T Hirota; Y Kiyanagi; T Ino; M Furusaka; J Suzuki, We have developed compound refractive prism for cold neutrons. To prevent an increase in neutron absorption, we have developed prism array like a Fresnel lens. The prism characteristics were investigated with experimental and numerical simulation studies. We achieved transmission of 0.75 and refractive angle of 7.5 mrad for 15 Angstrom neutrons with 49 layered prism array., SPIE-INT SOC OPTICAL ENGINEERING
NEUTRON OPTICS, 2001, [Reviewed]

Development of a magnetic lens and prism for cold neutron and their application to neutron scattering experiments
T Oku; T Adachi; H Sato; C Otani; Y Takizawa; K Sakai; HM Shimizu; K Sasaki; H Iwasa; T Kamiyama; Y Kiyanagi; T Ino; M Furusaka; J Suzuki; M Hino; S Tasaki; T Ebisawa, We have been developing a neutron lens and prism based on neutron refractive optics. As a neutron has a magnetic dipole moment, it is accelerated in a magnetic field gradient. Thus, we can control a neutron beam free from beam attenuation using the magnetic field gradient. Moreover, its spin dependence of the acceleration is profitable in the case of using the polarized neutron beam. The sextupole magnetic field functions as a focusing or defocusing lens for neutrons depending on the neutron spin states. The focusing and defocusing effects of a prototype sextupole magnet was experimentally studied. By combining focusing and defocusing functions of the sextupole magnet, we can control the neutron beam shape and divergence more flexibly. Adiabatic and nonadiabatic field connections make it possible to realize the magnetic doublet system. A quadrupole magnetic field functions as a neutron prism, which were experimentally confirmed. The neutron spin and energy dependence of the refracting power is applicable to an analysis of the neutron spin and energy. In this paper, the details of the experimental results of the magnetic devices are described and their applications in the neutron scattering experiment are discussed., SPIE-INT SOC OPTICAL ENGINEERING
NEUTRON OPTICS, 2001, [Reviewed]

Improved fabrication method for Nb/Al/AIO(x)/Al/Nb superconducting tunnel junctions as X-ray detectors
H Sato; Y Takizawa; W Oontani; T Ikeda; T Oku; C Otani; H Watanabe; K Kawai; H Miyasaka; H Kato; HM Shimizu; H Nakagawa; H Akoh; M Aoyagi; T Taino, Niobium-based superconducting tunnel junctions (STJs) with aluminum trapping layers as X-ray detectors were fabricated. We applied a fabrication technique for reducing the leakage current and improving the energy resolution for X-rays at around 6 keV. The edges of two Al layers sandwiching a tunneling barrier were oxidized by plasma discharge. The performance of these new STJs was compared with other types of STJs to which thermal oxidization in an O-2 atmosphere had been applied. The oxidization process in O-2 plasma significantly improved the energy resolution for X-rays, which reached values (FWHM) of 41 eV, 58 eV, 65 eV, and 129 eV for STJs with the size of 20 x 20 mu m(2), 100 x 100 mu m(2), 200 x 200 mu m(2), and 500 x 500 mu m(2) respectively., INTS PURE APPLIED PHYSICS
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, Sep. 2000, [Reviewed]

Cold neutron imaging detection with a GSO scintillator
F Tokanai; K Morimoto; T Oku; T Ino; J Suzuki; T Ikeda; W Ootani; C Otani; H Sato; HM Shimizu; Y Kiyanagi; T Hirota, The pulse-height spectrum and two-dimensional image of a 0.5 mm thick GSO scintillator were investigated for a 6 Angstrom cold neutron beam. The 31 and 81 keV peaks resulting from neutron absorption by Gd nuclei were identified in the pulse-height spectrum by using a photomultiplier tube. Images of 1.5 and 2.1 mm (FWHM) in diameter were observed for 1 and 2 mm diameter incident beams with an image intensifier and viewed by a CCD camera, corresponding to a position resolution of 1.3 mm (FWHM). The result implies that a position resolution of better than 100 mu m would be achievable by employing a GSO scintillator thinner than 20 mu m. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Sep. 2000, [Reviewed]

Neutron lens and prism
T Oku; HM Shimizu, A magnetic neutron lens and a prism using sextupole and quadrupole permanent magnets have been studied. The enhancement of beam intensity by a 2 m sextupole magnet was measured and a maximum gain of 36.5 in the wavelength range 14.0 Angstrom less than or equal to lambda less than or equal to 14.8 Angstrom was observed. The prism function of a quadrupole magnet has been experimentally demonstrated by observing a two-dimensional neutron image. We discuss the capability to measure neutron energy by combining the prism and a position sensitive detector and a possible application in neutron scattering experiment. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B, Jun. 2000, [Reviewed]

High-resolution X-ray detectors based on superconducting tunnel junction with SQUID readout
T Oku; T Ikeda; H Kato; K Kawai; H Miyasaka; W Ootani; C Otani; H Sato; HM Shimizu; Y Takizawa; H Watanabe; H Nakagawa; H Akoh; M Aoyagi; T Taino, We are developing high-resolution X-ray detectors based on superconducting tunnel junctions (STJs). A two-stage superconducting quantum-interference device (SQUID) amplifier with high gain, low noise and high sensitivity was employed as a readout electronic device. We have developed the STJ readout circuit which makes it possible to optimize the STJ bias condition without disturbing the operating point of the SQUID amplifier. High-resolution X-ray detectors using our system is discussed. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2000, [Reviewed]

Development of X-ray detectors based on Nb/Al/AlOx/Al/Nb superconducting tunnel junctions
W Ootani; T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; C Otani; H Sato; HM Shimizu; Y Takizawa; H Watanabe; H Nakagawa; H Akoh; M Aoyagi; T Taino, X-ray detectors based on Nb/Al/AlOx/Al/Nb superconducting tunnel junctions (STJ) have been fabricated. X-ray responses of the fabricated STJs were measured by illumination with X-rays from a Fe-55 electron capture source. The energy resolution of 41, 58 and 65 eV (FWHM) at 5.9 keV were obtained for 20 x 20, 100 x 100, 200 x 200 mu m(2) square-shaped devices, respectively. The X-ray measurements were performed at 0.35 K using a charge-sensitive preamplifier at room temperature. We also discussed the capability to suppress the substrate phonon events using Al2O3 insulation layer. An advantage for the combined use of the Al2O3 insulation layer and the sapphire substrate was demonstrated. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Apr. 2000, [Reviewed]

Properties of substrate phonon events in superconducting tunnel junctions induced by X-ray absorption
C Otani; T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; W Ootani; H Sato; HM Shimizu; Y Takizawa; H Watanabe; H Nakagawa; H Akoh; M Aoyagi; T Taino, The spectra of substrate phonon events induced by illuminating with X-rays obtained with Nb-based superconducting tunnel junctions (STJs) fabricated on a sapphire substrate were examined. We constructed a geometrical model in which the collection efficiency of phonons is proportional to the solid angle subtended to the Sn from the position or the absorption. By using the Monte-Carlo simulation, we succeeded in fairly reproducing the features of the spectra obtained by our measurements. A comparison of the model spectra with the measured ones revealed that a mismatch of the acoustic impedance at the junction-substrate interface and the spatial spread of a phonon cloud play an important role in the determination or the spectra. By including these effects, we show that the measured spectra can be well reproduced by adjusting only one fret, parameter, the radius of the phonon cloud. We estimated this radius in a sapphire substrate to be similar to 20 mu m under 5.9 keV X-ray illumination., JAPAN J APPLIED PHYSICS
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, Apr. 2000, [Reviewed]

A magnetic neutron lens
HM Shimizu; T Oku; H Sato; C Otani; H Kato; Y Suda; H Nakagawa; T Kamiyama; Y Kiyanagi; T Wakabayashi, The focusing effect on a cold neutron beam using a 2 m permanent sextupole magnet was measured. The beam intensity was enhanced at all measured wavelengths, and a maximum gain of 36.5 was obtained in the wavelength range 14.0 Angstrom less than or equal to lambda less than or equal to 14.8 Angstrom. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B, Mar. 2000, [Reviewed]

A neutron prism
T Oku; HM Shimizu, By combining a neutron refractive device (neutron prism) and a position-sensitive detector (PSD), we can construct a neutron energy analyzer, which makes it possible to realize a new type of a scattering instrument. In this paper, we describe the construction and performance of the neutron energy analyzer using the magnetic neutron prism, and discuss its application in a neutron scattering experiment. (C) 2000 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B, Mar. 2000, [Reviewed]

超伝導接合素子およびSQUIDアンプを用いたＸ線検出器　　　　　　　　　　　　　　　
池田時浩; 清水裕彦; 加藤博; 川井和彦; 三上秀枝; 宮坂宏正; 奥隆之; 大谷航; 大谷知行; 佐藤広海; 滝澤慶之; 渡辺博
低温工学会「超電導応用研究会」平成11年度講演論文集, 2000, [Reviewed]

Measurement of cold neutron-beam focusing effect of a permanent sextupole magnet
HM Shimizu; Y Suda; T Oku; H Nakagawa; H Kato; T Kamiyama; C Otani; H Sato; T Wakabayashi; Y Kiyanagi, The magnetic focus effect of cold neutron beam was measured using a permanent sextupole magnet and a gain of more than 35 was observed. The result was analyzed with a numerical simulation. (C) 1999 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Jul. 1999, [Reviewed]

Development of superconducting tunnel junctions with an aluminum-oxide insulation layer for X-ray detection
H Sato; T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; W Ootani; C Otani; HM Shimizu; H Watanabe; H Nakagawa; H Akoh; M Aoyagi, Superconducting tunnel junctions (STJ), with a buffer layer between the silicon substrate and junction, are being developed for use as high-resolution x-ray detectors. Aluminum-oxide (Al2O3) is employed as the buffer layer in order to suppress the phonon mediated background from the Si substrate. The extent of phonon insulation was studied by measuring the x-ray spectra of STJs as a function of buffer layer thickness. The phonon insulation ability of Al2O3 was compared to that of magnesium-oxide. The Al2O3 layer should be a good phonon insulator, with the ability to suppress phonons with a single buffer layer., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, [Reviewed]

Development of a compact system for high-resolution X-ray detection using a SQUID amplifier
T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; W Ootani; C Otani; H Sato; HM Shimizu; H Watanabe; H Nakagawa; H Akoh; M Aoyagi; T Taino, A compact system for an STJ-based high resolution X-ray detection system using a SQUID amplifier has been developed. A noise level of less than 4.8 mV at the SQUID output pulse height of 1.2 V for Nb-based STJ signals was achieved in the temperature range of 1.7-4.2K with good reproducibility under an external magnetic field of about 0.01 Tesla, which was applied to suppress the Josephson current of the STJ. The results show the possibility of constructing a compact STJ-based X-ray detection system with an 'on-site' low noise SQUID preamplifier., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 1999, [Reviewed]

中性子散乱装置の小型化高機能化
奥 隆之; 清水 裕彦, The Japanese Society for Neutron Science
波紋, 1999

Development of Compact High-resolution X-ray Detector System using STJ and a SQUID Amplifier　　　　　　　　　　　　　　　
T. Ikeda; H. Sato; H. Kato; K. Kawai; H. Miyasaka; T. Oku; W. Ootani; C. Ohtani; H.M. Shimizu; Y. Takizawa; H. Watanabe; H. Nakagawa; H. Akoh; M. Aoyagi; T. Taino
Inst. Phys. Conf. Ser., 1999, [Reviewed]

DC and AC magnetization and small-angle neutron scattering studies of strongly interacting particle systems
T Oku; E Ohta; T Sato; M Furusaka; M Imai; Y Matsushita, MnZn-ferrite particles were randomly dispersed in polymer matrix in which the magnetic anisotropy axes in the particles are randomly oriented. DC and AC magnetization and small-angle neutron scattering measurements have been made on the samples. The DC and AC susceptibilities showed spin-glass-like maxima at temperatures that depend on the interparticle interaction. The thermal evolution of remanence I-r and coercivity H-c was also considerably dependent on the interparticle interaction, i.e., the temperature at which I-r and H-c tend to zero increased with increasing the interparticle interaction energy. This suggests that a magnetic correlation occurs through the interparticle interaction in the present sample. The temperature dependence of imaginary part of the AC susceptibility chi " showed a singular cusp at a low temperature which is insensitive to the interparticle interaction. This singularity in chi " could reflect a blocking phenomena which is attributed to the intraparticle anisotropy. The small-angle magnetic neutron scattering line shape over a temperature range of 6 less than or equal to T less than or equal to 260 K could be represented by a function of Lorentzian plus squared Lorentzian which is appropriate for a random anisotropy held system. The data did not show a divergence in the magnetic correlation length, but suggested the formation of a local ferromagnetic cluster composed of the magnetic moments of the adjacent particles below 260 K. The correlation length increases with decreasing temperature. Around 40 K, it shows a maximum and starts to decrease with decreasing temperature. This decrease in the correlation length with decreasing temperature could arise from the random field effect which could originate from the intraparticle anisotropy. (C) 1998 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Oct. 1998, [Reviewed]

Cold neutron beam control using magnetic field gradient
HM Shimizu; H Kato; T Oku; Y Suda; Y Ogawa; H Iwasa; T Kamiyama; Y Kiyanagi; T Wakabayashi, The focusing of a cold neutron beam in an inhomogeneous magnetic field was studied using a permanent sextupole magnet. Preliminary results show that neutron beam current density at a wavelength of 13 Angstrom was enhanced by a factor of 30 after traveling through the sextupole magnet. (C) 1998 Elsevier Science B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICA B, Dec. 1997, [Reviewed]

Magnetic property and evaluation of MnZn-ferrite fine particles in Langmuir Blodgett film
T Oku; M Ohwada; T Sato; E Ohta, We investigated the magnetic properties of thin film samples with different number of layers stacked by the LB technique. The film samples showed a magnetically complex behavior in low temperature region, which is insufficiently explained by the idea of the homogenous dipole interaction field analogous to the demagnetizing field. The film thickness dependent behavior is discussed in terms of a picture of the magnetic viscosity which is realized in reentrant spin glass materials., EDITIONS PHYSIQUE
JOURNAL DE PHYSIQUE IV, Mar. 1997, [Reviewed]

Effect of neutron irradiation on the microstructures and tensile properties of different carbon fibers
T Oku; Y Imamura; A Kurumada; K Kawamata; T Deto; S Suzuki; M Ichikawa, Since carbon fiber reinforced carbon composite (C/C composite) materials have high thermal conductivity and good mechanical properties, they have been used as the plasma facing components in fusion facilities. As the plasma facing components are subjected to neutron irradiation in the fusion reactors, it is necessary to use irradiation damage resistant C/C composite materials as plasma facing components. Properties of C/C composite materials after neutron irradiation are generally influenced by irradiation behavior of carbon fiber and carbon matrix. In particular, the effect of irradiation on carbon fiber is important, because it is less crystalline than carbon matrix. The purpose of this study is to evaluate neutron irradiation effects on the microstructures and tensile properties of nine kinds of carbon fibers and to find out the necessary knowledge to identify the radiation resistant carbon fiber., INST MATERIALS RESEARCH LIBRARY
SCIENCE REPORTS OF THE RESEARCH INSTITUTES TOHOKU UNIVERSITY SERIES A-PHYSICS CHEMISTRY AND METALLURGY, Mar. 1997, [Reviewed]

Quantum tunneling of magnetization in single domain CoFe2O4 particles
T. Oku; H. Takano; M. Ohwada; T. Sato; E. Ohta, We systematically investigated the macroscopic quantum tunneling (MQT) phenomena of magnetization in CoFe2O4 particles with a diameter ranging from 30 to 92 Å in zero external magnetic field to remove the substantial influence of energy dissipation. For all of our samples, we observed the MQT phenomena in zero external magnetic field, in spite of the anticipation that a large magnetic field H comparable with the coercive force Hc would be necessary to lower the energy barrier so as to observe appreciable quantum tunneling of magnetization. The analysis shows that the crossover temperature T from the thermal to the quantum regime increases with decreasing anisotropy field HA. This relation between T* and HA is inconsistent with the theoretical prediction., EDP Sciences
Journal De Physique. IV : JP, 1997

Intraparticle structure in ultra-fine ZnFe2O4 particles　　　　　　　　　　　　　　　
Yokoyama M; Oku T; Taniyama T; Sato T; Ohta E; Sato T; Haneda K; Itoh S; Takeda M; Yokoyama M; Oku T; Taniyama T; Sato T; Ohta E; Sato T; Haneda K; Itoh S; Takeda M
KEK Progress Report, 1997, [Reviewed]

Magnetization process in helical-spin glass reentrant Cr0.81Mn0.19Ge studies by neutron depolarization analysis　　　　　　　　　　　　　　　
T. Sato; T. Taniyama; T. Oku; S. Ito; M. Takeda
Cryst. Res.& Technol., 1996, [Reviewed]

INTRAPARTICLE STRUCTURE IN ULTRA-FINE ZNFE2O4 PARTICLES
M YOKOYAMA; T OKU; T TANIYAMA; T SATA; E OHTA; T SATO; K HANEDA; S ITOH; K KURAHASHI; M TAKEDA, We have performed small-angle polarized-neutron scattering from ultra-fine ZnFe2O4 particles to confirm the intraparticle magnetic structure, which has been considered the origin of its peculiar magnetic features. On the basis of the Q-dependent differential neutron-scattering intensity, we were unable to detect any magnetic structure consisting of magnetically inactive surface layer with magnetic core. Thus, the magnetic behavior of ultra-fine ZnFe2O4 particles is explained in terms of a deviation in cation distribution from the normal spinel structure., ELSEVIER SCIENCE BV
PHYSICA B, Aug. 1995, [Reviewed]

MAGNETIC-PROPERTIES OF FERROMAGNETIC FINE PARTICLES DISPERSED IN POLYMER
T OKU; T SATO; E OHTA, The de susceptibility and magnetization relaxation were investigated on ferromagnetic particles dispersed in a polymer matrix with different configurations of particles in which a strong interparticle interaction is realized. The results suggest that intraparticle anisotropy is dominant in the relaxation process below 10 K, whereas the magnetic property is mainly influenced by interparticle interaction above 10 K., ELSEVIER SCIENCE BV
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Jul. 1995, [Reviewed]

HELICAL-SPIN-GLASS REENTRANT TRANSITION IN ITINERANT-ELECTRON TYPE MAGNET CR-1-XMN(X)GE
T SATO; T ANDO; T OKU; M FURUSAKA, Small-angle neutron-scattering measurements were performed for itinerant-electron-type helical-spin-glass reentrant magnets Cr0.83Mn0.17Ge and Cr0.81Mn0.19Ge. A picture of the spin-glass state coexisting with the helical spin ordering is discussed based on the temperature-dependent neutron-scattering intensity., ELSEVIER SCIENCE BV
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Feb. 1995, [Reviewed]

MOSSBAUER STUDY OF THE REENTRANT SPIN-GLASS PHASE OF NI76FE1MN23
T SATO; T ANDO; T OKU; S MORIMOTO; A ITO, From the Mossbauer study of (Ni76Fe1Mn23)-Fe-57, we deduced the distribution of hyperfine field characterized by two maxima. This is consistent with a picture of intradomain spin structure in the reentrant spin-glass Ni77Mn23 which was estimated from our previous neutron scattering experiments., ELSEVIER SCIENCE BV
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Feb. 1995, [Reviewed]

ITINERANT-ELECTRON-TYPE HELICAL-SPIN-GLASS REENTRANT TRANSITION IN CR0.81MN0.19GE
T SATO; T ANDO; T OKU; M FURUSAKA, Small-angle neutron-scattering and some magnetic measurements of Cr0.81Mn0.19Ge gave evidence of a double transition, from a paramagnetic to a helical magnetic state, and to a mixed state of helical and spin-glass-like ordering with decreasing temperature. The helical spin modulation, having a long period (from 360 angstrom at 5.3 K to 420 angstrom at 12.5 K), indicates the nature of an itinerant-electron-type magnet, and the reentrant transition is interpreted on the basis of the interacting spin fluctuation., AMERICAN PHYSICAL SOC
PHYSICAL REVIEW B, May 1994, [Reviewed]

EVALUATION OF TOUGHNESS DEGRADATION BY SMALL PUNCH (SP) TESTS FOR NEUTRON-IRRADIATED 21/4CR-1MO STEEL
M SUZUKI; M ETO; K FUKAYA; Y NISHIYAMA; T KODAIRA; T OKU; M ADACHI; A UMINO; TAKAHASHI, I; T MISAWA; Y HAMAGUCHI, Mechanical properties correlations between the small punch (SP) test and conventional tensile, Charpy impact and fracture toughness tests were investigated on neutron irradiated 2 1/4 Cr-1Mo ferritic steel Estimation of radiation induced changes on tensile strength, elastic-plastic fracture toughness (J(IC)) and ductile-to-brittle transition temperature (DBTT) are thought to be basically possible by mechanical properties correlations when based on sufficient pre-irradiation data., ELSEVIER SCIENCE BV
JOURNAL OF NUCLEAR MATERIALS, Mar. 1991, [Reviewed]

Nanometer-thick crystalline ice plates in rapidly-frozen glucose solution observed by spin-contrast-variation small-angle neutron scattering
Kumada Takayuki; Nakagawa Hiroshi; Miura Daisuke; Sekine Yurina; Motokawa Ryuhei; Hiroi Kosuke; Inamura Yasuhiro; Oku Takayuki; Oishi Kazuki*; Morikawa Toshiaki*; Kawamura Yukihiko*; Kawai Kiyoshi*
Hamon, May 2024

Measurement of parity non-conservation in compound-nuclear reactions using ¹³⁹La
後藤優; 井出郁央; 猪野隆; 遠藤駿典; 遠藤駿典; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 奥泉舞桜; 河村しほり; 北口雅暁; 北口雅暁; 木村敦; 小林龍珠; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 南部太郎; 中部倫太郎; 西村岳太郎; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹
量子ビームサイエンスフェスタ(Web), 2024

Measurements of parity violation in neutron induced reactions
SNOW Michael; AUTON Clayton; 遠藤駿典; 遠藤駿典; 藤岡宏之; 井出郁夫; 猪野隆; 後藤優; 河村しほり; 北口雅暁; 小林龍珠; 中部倫太郎; 奥隆之; 奥平琢也; 奥平琢也; 奥泉舞桜; 嶋達志; 清水裕彦; 高田秀佐; 高橋慎吾; 吉岡瑞樹
量子ビームサイエンスフェスタ(Web), 2024

Spin-angular correlation measurements of (n,γ) reactions using polarized epithermal neutrons
奥泉舞桜; AUTON Clayton; 遠藤駿典; 遠藤駿典; 藤岡宏之; 広田克也; 井出郁夫; 猪野隆; 木村敦; 北口雅暁; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 嶋達志; 清水裕彦; 高田秀佐; 高田秀佐; 多田紘規; 高橋慎吾; 吉岡瑞樹
量子ビームサイエンスフェスタ(Web), 2024

Development of the neutron polarization device for the time-of-flight single crystal neutron diffractometer SENJU at J-PARC.
高橋慎吾; 高橋慎吾; 鬼柳亮嗣; 小林龍珠; 小林龍珠; 奥平琢也; 奥平琢也; 猪野隆; 高田秀佐; 高田秀佐; 鈴木淳市; 奥隆之; 奥隆之
量子ビームサイエンスフェスタ(Web), 2024

Measurement of parity non-conservation in compound- nuclear reactions using ¹³⁹La
後藤優; 井出郁央; 猪野隆; 遠藤駿典; 遠藤駿典; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 奥泉舞桜; 河村しほり; 北口雅暁; 北口雅暁; 北口雅暁; 木村敦; 小林龍珠; 酒井健二; 嶋達志; 清水裕彦; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 南部太郎; 中部倫太郎; 西村岳太郎; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹
日本物理学会講演概要集(CD-ROM), 2024

On the feasibility of time-reversal invariance violation in neutron transmission
中部倫太郎; 遠藤駿典; 遠藤駿典; 藤岡宏之; 井出郁央; 猪野隆; 河村しほり; 北口雅暁; 小林龍珠; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 奥泉舞桜; 嶋達志; 清水裕彦; 高田秀佐; 高橋慎吾; 吉岡瑞樹
日本物理学会講演概要集(CD-ROM), 2024

Development of a polarization measurement method for ¹³¹Xe to search for T-violation
萩原直紀; 猪野隆; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 北口雅暁; 後藤優; 小林龍珠; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 高橋慎吾; 西村岳太郎; 藤岡宏之
日本物理学会講演概要集(CD-ROM), 2024

Spin determination for excited states of ¹⁴⁰La by circular polarization measurement in the ¹³⁹La(n,γ) ¹⁴⁰La reaction
遠藤駿典; 遠藤駿典; 藤岡宏之; 河村しほり; 木村敦; 北口雅暁; 小林龍珠; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 奥泉舞桜; 嶋達志; 清水裕彦; 高田秀佐; 高橋慎吾; 吉岡瑞樹
日本物理学会講演概要集(CD-ROM), 2024

Development of an In-situ SEOP System for the Measurement of Spin Correlation Terms in (n, γ) Reactions
奥泉舞桜; 奥泉舞桜; 浅井寛太; 猪野隆; 遠藤駿典; 遠藤駿典; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 加倉井和久; 河村しほり; 河村しほり; 北口雅暁; 木村敦; 小林龍珠; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 高橋慎吾
日本物理学会講演概要集(CD-ROM), 2024

Spin dependence in the s-wave resonance of ¹²⁹Xe+n
萩原直紀; 猪野隆; 及川健一; 及川峻矢; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 北口雅暁; 小林龍珠; 酒井健二; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 高橋慎吾; 土川雄介; 原田正英; 藤岡宏之
日本物理学会講演概要集(CD-ROM), 2024

Development of a laser system for the ³He spin filter to polarize neutron beam
後藤優; 奥隆之; 奥隆之; 奥平琢也; 奥平琢也; 高田秀佐; 高橋慎吾; 小林龍珠; 猪野隆
日本物理学会講演概要集(CD-ROM), 2023

Development of the Magnetic Field Measurement Device to Evaluate Homogeneous Magnetic Fields in the ³He-SpinFilter Solenoid Coils II.
小林龍珠; 小林龍珠; 奥隆之; 奥隆之; 高橋慎吾; 高橋慎吾; 高田秀佐; 高田秀佐; 奥平琢也; 奥平琢也
日本中性子科学会年会講演概要集, 2023

Utilization of Polarized Neutrons at J-PARC MLF BL04 ANNRI
奥泉舞桜; 奥平琢也; 奥平琢也; 猪野隆; 遠藤駿典; 遠藤駿典; 奥隆之; 奥隆之; 加倉井和久; 河村しほり; 河村しほり; 北口雅暁; 木村敦; AUTON Clayton; AUTON Clayton; 後藤優; 小林龍珠; 小林龍珠; 高田秀佐; 高田秀佐; 高橋慎吾; 高橋慎吾; 清水裕彦
日本中性子科学会年会講演概要集, 2023

The Installation of the ³He Neutron Spin Filter to the Single Crystal Neutron Diffractometer SENJU (I).
高橋慎吾; 高橋慎吾; 鬼柳亮嗣; 小林龍珠; 小林龍珠; 奥平琢也; 奥平琢也; 猪野隆; 鈴木淳市; 加倉井和久; 高田秀佐; 高田秀佐; 池田陽一; 藤田全基; 奥隆之; 奥隆之
日本中性子科学会年会講演概要集, 2023

Fundamental study of compound nuclei and T-violation search experiment
奥平琢也; 奥平琢也; 伊東佑起; 井出郁央; 遠藤駿典; 遠藤駿典; 奥隆之; 奥泉舞桜; 後藤優; 亀田健斗; 河村しほり; 北口雅暁; 木村敦; 中部倫太郎; 酒井健二; 嶋達志; 清水裕彦; 南部太郎; 西村岳太郎; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2023

Angular correlation between neutron spin and γ-ray mementum in ¹³⁹La(n,γ)¹⁴⁰La^* reactions
奥泉舞桜; 奥平琢也; 奥平琢也; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2023

Structure analysis of asymmetric interface using spin-contrast-variation neutron reflectometry
Kumada Takayuki; Miura Daisuke*; Akutsu Kazuhiro*; Oku Takayuki; Torikai Naoya*; Niizeki Tomotake*
Hamon, Nov. 2022

Development of spin-contrast-variation neutron powder diffractometry for extracting the structure factor of hydrogen atoms
Miura Daisuke*; Kumada Takayuki; Sekine Yurina; Oku Takayuki; Takata Shinichi; Hiroi Kosuke; Iwata Takahiro*
J-PARC MLF Annual Report 2021, Mar. 2022

Development of the polarimeter for circular polarization measurement of gamma-rays emitted from neutron capture reactions.
遠藤駿典; 遠藤駿典; 安部亮太; 石崎貢平; 伊東佑起; 奥隆之; 奥平琢也; OMER Mohamed; 亀田健斗; 河村しほり; 北口雅暁; 木村敦; 酒井健二; 静間俊行; 嶋達志; 清水裕彦; 杉田健人; 全炳俊; 平義隆; 高田秀佐; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2022

Plan for the T-violation search using compound nuclei and measurement of the spin-dependent neutron absorption cross section with polarized nuclei
奥平琢也; 奥平琢也; 安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2022

Measurement of σ_n・k_γ angular dependent term of ¹³⁹La(n,γ)¹⁴⁰ La reaction for polarized neutrons
安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 長谷川拓郎; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2022

The angular dependence of the cross section of ¹¹⁵In(n, γ) reaction toward a search for time-reversal violation using an indium target.
高田秀佐; 安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 奥平琢也; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2022

T-violation search using compound nuclei-measurement of the spin-dependent neutron absorption cross section with polarized nuclei-
奥平琢也; 奥平琢也; 石角元志; 伊東佑起; 井出郁央; 遠藤駿典; 遠藤駿典; 奥隆之; 奥隆之; 河村しほり; 神原理; 亀田健斗; 北口雅暁; 木村敦; 後藤優; 小林龍珠; 酒井健二; 篠原武尚; 嶋達志; 清水裕彦; 高田秀佐; 高田秀佐; 高橋慎吾; 高橋慎吾; 高橋竜太; 中部倫太郎; 広田克也; 藤家拓大; 藤家拓大; 土川雄介; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2022

Branching ratio measurement of prompt gamma-rays from the compound resonances to the low lying states.
広田克也; 安部亮太; 石崎貢平; 猪野隆; 遠藤駿典; 遠藤駿典; 奥平琢也; 奥隆之; 木村敦; 北口雅暁; 古賀淳; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 谷結以花; 長谷川拓郎; 藤岡宏之; 堀田大稀; 山本知樹; 吉岡瑞樹; 吉川大幹
量子ビームサイエンスフェスタ(Web), 2021

Measurement result of an angular dependence of γ-rays emitted by the ¹¹⁷Sn(n, γ) reactions
古賀淳; 安部亮太; 石崎貢平; 井出郁央; 伊東佑起; 猪野隆; 岩本修; 遠藤駿典; 遠藤駿典; 緒方一介; 奥隆之; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 鬼柳善明; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 竹谷薫; 多田紘規; 谷結以花; 中井飛翔; 新實裕大; 萩野浩一; 長谷川拓郎; 原田秀郎; 日野正裕; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 堀田大稀; 細畠拓也; 松崎俊; 三島賢二; 山形豊; 山本知樹; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Study of ¹³¹Xe(n,γ) reaction for T-violation search
谷結以花; 安部亮太; 石崎貢平; 井出郁央; 伊東佑起; 猪野隆; 岩本修; 遠藤駿典; 遠藤駿典; 緒方一介; 奥隆之; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 鬼柳善明; 古賀淳; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 竹谷薫; 多田紘規; 中井飛翔; 新實裕大; 萩野浩一; 長谷川拓郎; 原田秀郎; 日野正裕; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 堀田大稀; 細畠拓也; 松崎俊; 三島賢二; 山形豊; 山本知樹; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Measurement of polarization dependence for capture cross-section of ¹¹⁷Sn(→n,γ) reaction
遠藤駿典; 遠藤駿典; 安部亮太; 石崎貢平; 伊東佑起; 奥隆之; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 中井飛翔; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Measurement of angular dependent term of ¹³⁹La(n,γ) reaction for polarized neutrons
安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 奥平琢也; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 中井飛翔; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Measurement of the γ-ray angular distribution in ¹³¹Xe(n,γ)¹³²Xe^* reactions
奥平琢也; 奥平琢也; 安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 亀田健斗; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Present status of time-reversal violation search experiment with compound nuclei
北口雅暁; 安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 奥平琢也; 亀田健斗; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

Evaluation of resonance parameters of compound nuclear states in the n+¹³¹Xe reaction
亀田健斗; 安部亮太; 石崎貢平; 伊東佑起; 遠藤駿典; 遠藤駿典; 奥隆之; 奥平琢也; 北口雅暁; 木村敦; 酒井健二; 嶋達志; 清水裕彦; 高田秀佐; 中井飛翔; 広田克也; 藤家拓大; 藤家拓大; 藤岡宏之; 吉岡瑞樹; 吉川大幹
日本物理学会講演概要集(CD-ROM), 2021

The progress of polarized target study for the search of T-violation in the neutron resonant capture in 2019.
石崎貢平; 飯沼昌隆; 池田陽一; 池上弘樹; 石黒亮輔; 石元茂; 井出郁央; 猪野隆; 岩田高広; 上坂友洋; 大友季哉; 奥隆之; 神田浩樹; 北口雅暁; 郡英輝; 嶋達志; 清水裕彦; 高橋大輔; 高橋義朗; 藤田全基; 堀田大稀; 松下琢; 三浦大輔; 宮地義之; 吉川大幹; 與曽井優; 和田信雄
日本物理学会講演概要集(CD-ROM), 2020

Branching ratio measurement of prompt gamma-rays from the compound resonances to the low lying states.
広田克也; 石崎貢平; 猪野隆; 遠藤駿典; 奥平琢也; 奥隆之; 木村敦; 北口雅暁; 古賀淳; 酒井健二; 佐藤匠; 嶋達志; 清水裕彦; 高田秀佐; 谷結以花; 藤岡宏之; 牧瀬壮; 山本知樹; 吉岡瑞樹; 吉川大幹
量子ビームサイエンスフェスタ(Web), 2019

複合核状態を用いた時間反転対称性の破れ探索計画
山本知樹; 清水裕彦; 北口雅暁; 広田克也; 石崎貢平; 遠藤駿典; 佐藤匠; 高田秀佐; 古賀淳; 吉岡瑞樹; 猪野隆; HADDOCK Christopher; 旭耕一郎; 百瀬孝昌; 岩田高広; 酒井健二; 木村敦; 奥平琢也; 奥隆之; 日野正裕; 嶋達志; 山形豊
日本物理学会講演概要集(CD-ROM), 21 Sep. 2018

時間反転対称性の破れ探索のための中性子偏極フィルターの開発
佐藤匠; 清水裕彦; 北口雅暁; 広田克也; 石崎貢平; 遠藤駿典; 山本知樹; 高田秀佐; 古賀淳; 吉岡瑞樹; 猪野隆; HADDOCK Christopher; 旭耕一郎; 百瀬孝昌; 岩田高広; 酒井健二; 木村敦; 奥平琢也; 奥隆之; 日野正裕; 嶋達志; 山形豊
日本物理学会講演概要集(CD-ROM), 21 Sep. 2018

複合核共鳴を用いた時間反転対称性破れ探索に向けた,⁸¹Br(n,γ)反応におけるγ線放出角度分布測定
遠藤駿典; 清水裕彦; 北口雅暁; 広田克也; 山本知樹; 石崎貢平; 佐藤匠; 高田秀佐; 古賀淳; 吉岡瑞樹; 猪野隆; HADDOCK Christopher; 旭耕一郎; 百瀬孝昌; 岩田高広; 酒井健二; 木村敦; 奥平琢也; 奥隆之; 日野正裕; 嶋達志; 山形豊
日本物理学会講演概要集(CD-ROM), 21 Sep. 2018

Polarized neutrons
Hiraka Haruhiro*; Yamaguchi Yasuo*; Maruyama Ryuji; Oku Takayuki; Ino Takashi*
Hamon, Aug. 2018

共通試料環境の現状
河村聖子; 奥隆之; 渡辺真朗; 高橋竜太; 宗像孝司; 高田慎一; 坂口佳史; 石角元志; 大内啓一; 服部高典; 吉良弘; 酒井健二; 麻生智一; 山内康弘; 中村雅俊
日本原子力研究開発機構JAEA-Review(Web), Feb. 2018

Measurement of parity violation of lanthanum-139 for the T-violation search in a compound nucleus
山本知樹; 清水裕彦; 北口雅暁; 広田克也; HADDOCK Christopher; 奥平琢也; 大井法子; 伊藤維久弥; 石崎貢平; 遠藤駿典; 佐藤匠; 吉岡瑞樹; 高田秀佐; 古賀淳; 木村敦; 酒井健二; 奥隆之
量子ビームサイエンスフェスタ(Web), 2018

複合核状態における時間反転対称性の破れ探索のための偏極中性子を用いた空間反転対称性の破れ測定
山本知樹; 清水裕彦; 北口雅暁; 広田克也; 奥平琢也; 大井法子; 伊藤維久弥; 遠藤駿典; HADDOCK Christopher; 高田秀佐; 古賀淳; 吉岡瑞樹; 猪野隆; 旭耕一郎; 百瀬孝昌; 岩田高広; 酒井健二; 木村敦; 奥隆之; 日野正裕; 嶋達志; 山形豊
日本物理学会講演概要集(CD-ROM), 25 Sep. 2017

Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex III: Neutron Devices and Computational and Sample Environments
Kaoru Sakasai; Setsuo Satoh; Tomohiro Seya; Tatsuya Nakamura; Kentaro Toh; Hideshi Yamagishi; Kazuhiko Soyama; Dai Yamazaki; Ryuji Maruyama; Takayuki Oku; Takashi Ino; Hiroshi Kira; Hirotoshi Hayashida; Kenji Sakai; Shinichi Itoh; Kentaro Suzuya; Wataru Kambara; Ryoichi Kajimoto; Kenji Nakajima; Kaoru Shibata; Mitsutaka Nakamura; Toshiya Otomo; Takeshi Nakatani; Yasuhiro Inamura; Jiro Suzuki; Takayoshi Ito; Nobuo Okazaki; Kentaro Moriyama; Kazuya Aizawa; Seiko Ohira-Kawamura; Masao Watanabe
QUANTUM BEAM SCIENCE, Sep. 2017, [Reviewed]

J-PARC MLFにおける偏極³He中性子スピンフィルターの開発
吉良弘; 林田洋寿; 茂吉武人; 宗像孝司; 中尾朗子; 鈴木淳市; 加倉井和久; 奥隆之; 酒井健二; 廣井孝介; 高田慎一; 大原高志; 鬼柳亮嗣; 猪野隆; 大山研司; 大河原学
日本中性子科学会年会講演概要集, 2017

J‐PARC MLFビームライン共通試料環境機器の整備状況および今後の整備計画
奥隆之; 渡辺真朗; 河村聖子; 麻生智一; 高橋竜太; 酒井健二; 山内康弘; 中村雅俊; 宗像孝司; 石角元志; 坂口佳史; 大内啓一; 吉良弘; 相澤一也
日本中性子科学会年会講演概要集, 2017

J‐PARCにおけるIn‐situ SEOP型³He中性子スピンフィルターの開発
林田洋寿; 奥隆之; 廣井孝介; 酒井健二; 吉良弘; 猪野隆; 大河原学; 加倉井和久; 鈴木淳市; 相澤一也
日本中性子科学会年会講演概要集, 2017

J‐PARC中性子小角・広角散乱装置「大観」における偏極・集光実験環境
大石一城; 鈴木淳市; 高田慎一; 岩瀬裕希; 篠原武尚; 奥隆之; 河村幸彦; 中谷健; 稲村泰弘; 伊藤崇芳; 吉良弘; 森川利明; 佐原雅恵; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集(CD-ROM), 23 Sep. 2016

Proceedings of the 21st Meeting of the International Collaboration on Advanced Neutron Sources (ICANS-XXI); Sep. 29 - Oct.3, 2014, Ibaraki Prefectural Center, Mito, Japan
Oku Takayuki; Nakamura Mitsutaka; Sakai Kenji; Teshigawara Makoto; Tatsumoto Hideki*; Yonemura Masao*; Suzuki Junichi*; Arai Masatoshi*
JAEA-Conf 2015-002, Feb. 2016

Progress of the Materials & Life Science Facility of J-PARC
ARAI Masatoshi; FUTAKAWA Masatoshi; TAKADA Hiroshi; HAGA Katsuhiro; MEIGO Shin‐ichiro; MIYAKE Yasuhiro; MIYAKE Yasuhiro; HARADA Masahide; NAKAJIMA Kenji; KAJIMOTO Ryoichi; NAKAMURA Mitsutaka; SUZUYA Kentaro; SHIBATA Kaoru; SUZUKI Jun‐ichi; SUZUKI Jun‐ichi; TAKATA Shinichi; NAKATANI Takeshi; INAMURA Yasuhiro; NAKAMURA Tatsuya; OKU Takayuki; AIZAWA Kazuya; SOYAMA Kazuhiko; KAWAKITA Yukinobu
日本原子力研究開発機構JAEA-Conf(Web), Feb. 2016

J-PARC MLFにおける偏極³He中性子スピンフィルター開発の現状
吉良弘; 林田洋寿; PARKER J. D.; 茂吉武人; 宗像孝司; 中尾朗子; 鈴木淳市; 加倉井和久; 廣井孝介; 酒井健二; 奥隆之; 甲斐哲也; 篠原武尚; 鬼柳亮嗣; 大原高志; 猪野隆; 大山研司; 大河原学
日本中性子科学会年会講演概要集, 2016

偏極中性子散乱装置POLANOにおける³He中性子スピンフィルターの開発 II
大河原学; 藤田全基; 南部雄亮; 猪野隆; 横尾哲也; 伊藤晋一; 吉良弘; 林田洋寿; 加倉井和久; 酒井健二; 廣井孝介; 奥隆之; 大山研司
日本中性子科学会年会講演概要集, 2016

Present Status of the Materials & Life Science Experimental Facility of J-PARC
ARAI Masatoshi; FUTAKAWA Masatoshi; TAKADA Hiroshi; HAGA Katsuhiro; MEIGO Shin‐ichiro; MIYAKE Yasuhiro; HARADA Masahide; NAKAJIMA Kenji; KAJIMOTO Ryoichi; NAKAMURA Mitsutaka; SUZUYA Kentaro; SHIBATA Kaoru; SUZUKI Jun‐ichi; TAKATA Shinichi; NAKATANI Takeshi; INAMURA Yasuhiro; NAKAMURA Tatsuya; OKU Takayuki; AIZAWA Kazuya; SOYAMA Kazuhiko; KAWAKITA Yukinobu
JPS Conference Proceedings (Web), 25 Sep. 2015

偏極中性子散乱装置POLANOにおける³He中性子スピンフィルターの開発
大河原学; 南部雄亮; 藤田全基; 猪野隆; 横尾哲也; 伊藤晋一; 吉良弘; 林田洋寿; 酒井健二; 廣井孝介; 奥隆之; 加倉井和久; 大山研司
日本中性子科学会年会講演概要集, 2015

磁気イメージングのための³He中性子スピンフィルターの開発
林田洋寿; 吉良弘; PARKER J.D; 松本吉弘; ZHANG S; 桐山幸治; 鈴木淳市; 奥隆之; 酒井健二; 廣井孝介; 篠原武尚; 甲斐哲也; 渡辺真朗; 加倉井和久; 相澤一也; 猪野隆; 大山研司; 能田洋平; 大河原学
日本中性子科学会年会講演概要集, 2015

³He中性子偏極フィルターの開発状況と今後の計画
奥隆之; 酒井健二; 廣井孝介; 篠原武尚; 相澤一也; 加倉井和久; 吉良弘; 林田洋寿; 桐山孝治; 鈴木淳市; 猪野隆; 大河原学; 能田洋平; 大山研司
日本中性子科学会年会講演概要集, 2015

Development of Compact Laser Optics for an In-situ Spin-Exchange Optical Pumping ³He Neutron Spin Filter
Takayuki Oku; Hirotoshi Hayashida; Hiroshi Kira; Kenji Sakai; Kosuke Hiroi; Takenao Shinohara; Yoshifumi Sakaguchi; Takashi Ino; Kenji Ohoyama; Lieh-Jeng Chang; Mitsutaka Nakamura; Jun-ichi Suzuki; Kazuya Aizawa; Masatoshi Arai; Yasuo Endoh; Kazuhisa Kakurai
Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe —, 2015

9aAE-2 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) III
Miyajima S.; Narukami Y.; Shishido H.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T.
Meeting abstracts of the Physical Society of Japan, 22 Aug. 2014

9aAE-1 Superconducting neutron detector by using Nb-based current biased kinetic inductance detector (CB-KID) II
Narukami Y.; Miyajima S.; Shishido H.; Fujimaki A.; Hidaka M.; Oikawa K.; Harada M.; Oku T.; Arai M.; Ishida T.
Meeting abstracts of the Physical Society of Japan, 22 Aug. 2014

J‐PARC大強度中性子小角・広角散乱装置「大観」の現状
大石一城; 鈴木淳市; 高田慎一; 岩瀬裕希; 篠原武尚; 奥隆之; 中谷健; 稲村泰弘; 伊藤崇芳; 吉良弘; 森川利明; 佐原雅恵; 細谷倫紀; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集, 22 Aug. 2014

J‐PARC大強度中性子小角・広角散乱装置「大観」
大石一城; 鈴木淳市; 高田慎一; 岩瀬裕希; 篠原武尚; 奥隆之; 中谷健; 稲村泰弘; 伊藤崇芳; 吉良弘; 森川利明; 佐原雅恵; 細谷倫紀; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本磁気学会学術講演概要集, 19 Aug. 2014

オンビームSEOP型³He中性子偏極フィルターの開発と応用
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 相澤一也; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 猪野隆; 平賀晴弘; 清水裕彦; 大河原学; 大山研司
物構研サイエンスフェスタ要旨集, 2014

偏極中性子反射率計「写楽」におけるIn‐situ SEOP³Heスピンフィルターの開発
林田洋寿; 奥隆之; 吉良弘; 酒井健二; 武田全康; 坂口佳史; 猪野隆; 篠原武尚; 大山研二; 鈴木淳市; 加倉井和久; 水沢まり; 宮田登; 山崎大; 曽山和彦; 丸山龍治; 新井正敏
物構研サイエンスフェスタ要旨集, 2014

In‐situ SEOP方式偏極³He中性子スピンフィルターの応用と磁気シールドの開発
吉良弘; 坂口佳史; 鈴木淳市; 奥隆之; 林田洋寿; 酒井健二; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 有本靖; 猪野隆; 大河原学; 大山研司; 清水裕彦
物構研サイエンスフェスタ要旨集, 2014

中性子による磁場のイメージング
篠原武尚; 林田洋寿; 酒井健二; 廣井孝介; 甲斐哲也; 及川健一; 原田正英; 大井元貴; 奥隆之; 新井正敏; 和田直大; 鬼柳善明
放射線プロセスシンポジウム講演要旨・ポスター発表要旨集, 2014

³He中性子偏極フィルターの開発状況と今後の計画
奥隆之; 酒井健二; 廣井孝介; 篠原武尚; 相澤一也; 新井正敏; 加倉井和久; 林田洋寿; 吉良弘; 鈴木淳市; 猪野隆; 大河原学; 大山研司
日本中性子科学会年会講演概要集, 2014

in‐situ SEOP型³Heフィルターの³He核スピンフリップシステムの開発と応用
林田洋寿; 吉良弘; 鈴木淳市; 奥隆之; 酒井健二; 廣井考介; 篠原武尚; 加倉井和久; 相澤一也; 新井正敏; 猪野隆; 大山研司; 大河原学
日本中性子科学会年会講演概要集, 2014

偏極³He中性子スピンフィルターを使った偏極中性子小角散乱デモ実験
吉良弘; 林田洋寿; 岩瀬裕希; 大石一城; 鈴木淳市; 奥隆之; 酒井健二; 廣井孝介; 高田慎一; 猪野隆; 大山研司; 大河原学; 加倉井和久; 相澤一也; 新井正敏
日本中性子科学会年会講演概要集, 2014

The Small and Wide Angle Neutron Scattering Instrument TAIKAN at J-PARC
Takata Shin-ichi; Nakatani Takeshi; Suzuya Kentaro; Aizawa Kazuya; Otomo Toshiya; Sugiyama Masaaki; Arai Masatoshi; Suzuki Jun-ichi; Ohishi Kazuki; Iwase Hiroki; Shinohara Takenao; Oku Takayuki; Tominaga Taiki; Inamura Yasuhiro; Ito Takayoshi
hamon, 2014

大強度パルス中性子源における3He中性子スピンフィルターの実用化研究　　　　　　　　　　　　　　　
奥隆之; 吉良弘; 林田洋寿; 酒井健二; 廣井孝介; 篠原武尚; 猪野隆; 大河原学; 大山研司; 高田慎一; 大石一城; 岩瀬裕希; 宮田登; 阿久津和宏; 坂口佳史; 武田全康; 鈴木淳市; 相澤一也; 新井正敏; 加倉井和久
日本中性子科学会誌「波紋」, 2014

「中性子小角・広角散乱装置（大観）」に関して　　　　　　　　　　　　　　　
高田慎一; 鈴木淳市; 大石一城; 岩瀬裕希; 篠原武尚; 奥隆之; 富永大輝; 稲村泰弘; 伊藤崇芳; 中谷健; 鈴谷賢太郎; 相澤一也; 大友季哉; 杉山正明; 新井正敏
日本中性子科学会誌「波紋」, 2014

Development of a Time-resolved Neutron Imaging Detector Based on the μPIC Micro-Pixel Chamber
Joseph D Parker; Masahide Harada; Kaori Hattori; Satoru Iwaki; Shigeto Kabuki; Yuji Kishimoto; Hidetoshi Kubo; Shunsuke Kurosawa; Yoshihiro Matsuoka; Kentaro Miuchi; Tetsuya Mizumoto; Hironobu Nishimura; Takayuki Oku; Tatsuya Sawano; Takenao Shinohara; Jun-ichi Suzuki; Atsushi Takada; Toru Tanimori; Kazuki Ueno; Masahiro Ikeno; Manobu Tanaka; Tomohisa Uchida
hamon, 21 May 2013

大強度中性子小中角散装置「大観」における偏極実験環境整備の現状
大石一城; 鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 富永大輝; 中谷健; 稲村泰弘; 岩瀬裕希; 伊藤崇芳; 吉良弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集, 05 Mar. 2013

オンビームSEOP型³He中性子偏極フィルターの開発と応用
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 相澤隆; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 猪野隆; 平賀晴弘; 清水裕彦; 大河原学; 大山研司
日本中性子科学会年会講演概要集, 2013

In‐situ SEOP方式偏極³He中性子スピンフィルターの応用と磁気シールドの開発
吉良弘; 坂口佳史; 鈴木淳市; 奥隆之; 林田洋寿; 酒井健二; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 有本靖; 猪野隆; 大河原学; 大山研司; 清水裕彦
日本中性子科学会年会講演概要集, 2013

In‐situ SEOP型³Heスピンフィルターの開発
林田洋寿; 奥隆之; 吉良弘; 酒井健二; 猪野隆; 篠原武尚; 大山研二; 高田慎一; 大石一城; 武田全康; 坂口佳史; 及川健一; 鈴木淳市; 加倉井和久; 相澤一也; 新井正敏
日本中性子科学会年会講演概要集, 2013

J‐PARC中性子小角・広角散乱装置「大観」の装置性能および現状報告
高田慎一; 鈴木淳市; 大石一城; 岩瀬裕希; 富永大輝; 篠原武尚; 奥隆之; 中谷健; 稲村泰弘; 伊藤崇芳; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本中性子科学会年会講演概要集, 2013

Precision magnetic field mapping for the ³He neutron spin filter
Takashi Ino; Yasushi Arimoto; Hiroshi Kira; Yoshifumi Sakaguchi; Takenao Shinohara; Kenji Sakai; Takayuki Oku; Kazuhisa Kakurai; Kenji Ohoyama
Physics Procedia, 2013

Polarization analysis equipment in SANS-J-II: Study of polymer electrolyte membrane for fuel cell
Yohei Noda; Daisuke Yamaguchi; Ananda Putra; Satoshi Koizumi; Yoshifumi Sakaguchi; Takayuki Oku; Jun Ichi Suzuki
Physics Procedia, 2013

Current status of the small and wide angle neutron scattering instrument (TAIKAN) at J-PARC
Suzuki Jun-ichi; Ito Takayoshi; Suzuya Kentaro; Otomo Toshiya; Aizawa Kazuya; Arai Masatoshi; Sugiyama Masaaki; Takata Shin-ichi; Ohishi Kazuki; Iwase Hiroki; Tominaga Taiki; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro
Meeting Abstracts of the Physical Society of Japan, 2013

26aXZB-6 Current status of Polarized Neutron Experimental Environment at Small and Wide Angle Neutron Scattering Instrument "TAIKAN"
Ohishi K.; Ito T.; Kira H.; Suzuya K.; Aizawa K.; Arai M.; Otomo T.; Sugiyama M.; Suzuki J.; Takata S.; Shinohara T.; Oku T.; Tominaga T.; Nakatani K.; Inamura Y.; Iwase H.
Meeting Abstracts of the Physical Society of Japan, 2013

Development of a Time-resolved Neutron Imaging Detector Based on the μPIC Micro-Pixel Chamber
Don Parker Joseph; Miuchi Kentaro; Mizumoto Tetsuya; Nishimura Hironobu; Oku Takayuki; Sawano Tatsuya; Shinohara Takenao; Suzuki Jun-ichi; Takada Atsushi; Tanimori Toru; Ueno Kazuki; Harada Masahide; Ikeno Masahiro; Tanaka Manobu; Uchida Tomohisa; Hattori Kaori; Iwaki Satoru; Kabuki Shigeto; Kishimoto Yuji; Kubo Hidetoshi; Kurosawa Shunsuke; Matsuoka Yoshihiro
hamon, 2013

J‐PARC/MLFでの可搬型偏極³Heスピンフリッパーの開発
酒井健二; 奥隆之; 篠原武尚; 林田洋寿; 及川健一; 原田正英; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 猪野隆; 大山研司; 平賀晴弘
日本中性子科学会年会講演概要集, 07 Dec. 2012

オンビームSEOP型³He偏極フィルター用小型レーザー光学系の開発
奥隆之; 林田洋寿; 酒井健二; 篠原武尚; 中村充孝; 新井正敏; 遠藤康夫; 加倉井和久; 吉良弘; 坂口佳史; 鈴木淳市; 有本靖; 猪野隆; 大山研司; 平賀晴弘; 清水裕彦
日本中性子科学会年会講演概要集, 07 Dec. 2012

偏極反射率計「写楽」への導入に向けたオンビームSEOP型³He偏極フィルターの開発
林田洋寿; 奥隆之; 酒井健二; 武田全康; 山崎大; 丸山龍治; 曽山和彦; 久保田正人; 篠原武尚; 及川健一; 原田正英; 加倉井和久; 新井正敏; 吉良弘; 水沢まり; 吉田登; 坂口佳史; 鈴木淳市; 猪野隆; 大山研司; 平賀晴弘
日本中性子科学会年会講演概要集, 07 Dec. 2012

In‐situ SEOP方式³He偏極フィルター用磁気シールドの設計
吉良弘; 坂口佳史; 鈴木淳市; 酒井健二; 奥隆之; 篠原武尚; 中村充孝; 新井正敏; 猪野隆; 有本靖; 林田洋寿; 加倉井和久; 遠藤康夫; 堤健之; 平賀晴弘; 大山研司; 清水裕彦; CHANG L‐J
日本中性子科学会年会講演概要集, 07 Dec. 2012

機械強度に及ぼす高分子編目中の僅かな水とその編目構造
富永大輝; 高田慎一; 篠原武尚; 奥隆之; 中谷健; 稲村泰弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 鈴木淳市; 岩瀬裕希; 大石一城; 伊藤崇芳; 杉山正明
日本中性子科学会年会講演概要集, 07 Dec. 2012

偏極パルス中性子を用いた磁気イメージング法の開発 III
篠原武尚; 根岸智哉; 林田洋寿; 酒井健二; 甲斐哲也; 大井元貴; 佐藤博隆; 原田正英; 及川健一; 前川藤夫; 奥隆之; 相澤一也; 新井正敏; 鬼柳善明
日本物理学会講演概要集, 24 Aug. 2012

SEOP式偏極³He中性子スピンフィルターにおける到達³He偏極率制限因子についての考察
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 山田和芳; CHANG L. J; 尾原幸治; 加倉井和久
日本物理学会講演概要集, 05 Mar. 2012

25pCL-14 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K.; Sato T.; Sato T.J.; Arima T.; Ino T.; Kira H.; Sakaguchi Y.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H.M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Yokoo Y.; Itoh S.; Tomiyasu K.; Matusura M.; Hiraka H.; Fujita M.; Kimura H.
Meeting Abstracts of the Physical Society of Japan, 2012

J-PARC物質生命科学研究施設　　　　　　　　　　　　　　　
池田一貴; 奥隆之; 鈴木淳市; 武田全康; 星川晃範; 三宅康博
工業材料, 2012

20aAG-3 Operation Start of Small and Wide Angle Neutron Scattering Instrument TAIKAN
Suzuki Jun-ichi; Ito Takayoshi; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya; Sugiyama Masaaki; Takata Shin-ichi; Shinohara Takenao; Oku Takayuki; Tominaga Taiki; Nakatani Takeshi; Inamura Yasuhiro; Ohishi Kazuki; Iwase Hiroki
Meeting Abstracts of the Physical Society of Japan, 2012

J-PARCの物質・生命科学実験施設　　　　　　　　　　　　　　　
池田一貴; 奥隆之; 鈴木淳市; 武田全康; 星川晃範; 三宅康博
工業材料, 2012

20aAG-3 Operation Start of Small and Wide Angle Neutron Scattering Instrument TAIKAN
Suzuki Jun-ichi; Ito Takayoshi; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya; Sugiyama Masaaki; Takata Shin-ichi; Shinohara Takenao; Oku Takayuki; Tominaga Taiki; Nakatani Takeshi; Inamura Yasuhiro; Ohishi Kazuki; Iwase Hiroki
Meeting Abstracts of the Physical Society of Japan, 2012

22aJA-9 Neutron Imaging Detector Based on the μPIG Micro-Pixel Gaseous Chamber
Parker Joseph D.; Harada Masahide; Hattori Kaori; Iwaki Satoru; Kabuki Shigeo; Kishimoto Yuji; Kubo Hidetoshi; Kurosawa Shunsuke; Miuchi Kentaro; Nishimura Hironobu; Oku Takayuki; Sawano Tatsuya; Shinohara Takenao; Suzuki Jun-ichi; Tanimori Toru; Ueno Kazuki
Meeting abstracts of the Physical Society of Japan, 24 Aug. 2011

偏極³He中性子スピンフィルターのガラスセルの開発 IV
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 山田和芳; CHANG L. J; 尾原幸治; 加倉井和久
日本物理学会講演概要集, 24 Aug. 2011

中性子光学及び検出システムの開発と応用:研究概要
鈴木淳市; 高田慎一; 吉良弘; 篠原武尚; 奥隆之; 中村充孝; 柴田薫; 高橋伸明; 相澤一也; 甲斐哲也; 大井元貴; 原田正英; 酒井健二; 及川健一; 前川藤夫; 曽山和彦; 新井正敏; 坂口佳史; CHANG L.J; 酒井卓郎; 松林政仁; 加倉井和久; 佐藤節夫; 武藤豪; 有本靖; 猪野隆; 清水裕彦; 大山研司; 山田和芳; PARKER J; 澤野達裁; 谷森達; 古坂道弘; 鬼柳善明; 高橋浩之; GUERARD B
日本原子力研究開発機構JAEA-Review(Web), Jun. 2011

25pTN-4 Performance of a Neutron Imaging Detector Based on the μPIC Micro-Pixel Gaseous Chamber
Parker J. D.; Marada M.; Hattori K.; Iwaki S.; Habuki S.; Kishimoto Y.; Kubo H.; Kurosawa S.; Miuchi K.; Nishimura H.; Oku T.; Sawano T.; Shinohara T.; Suzuki J.; Tanimori T.; Ueno K.
Meeting abstracts of the Physical Society of Japan, 03 Mar. 2011

25aTN-6 Present Status of Polarized Spectrometer Project in J-PARC
Ohoyama K.; Sato T. J.; Tomiyasu K.; Arima T.; Ino T.; Kira H.; Sakaguchi K.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H. M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Itoh S.; Yokoo Y.; Hiraka H.; Fujita M.; Matusura M.; Sato T.; Horigane K.
Meeting Abstracts of the Physical Society of Japan, 2011

22pJA-2 Progress of Polarisation Analysis Neutron Spectrometer Project in J-PARC
Ohoyama K.; Sato T.; Sato T. J.; Arima T.; Ino T.; Kira H.; Sakaguchi Y.; Oku T.; Arimoto Y.; Suzuki J.; Shimizu H. M.; Iwasa K.; Takeda M.; Kaneko K.; Hino M.; Muto G.; Nojiri H.; Yokoo Y.; Itoh S.; Hiraka H.; Fujita M.; Matusura M.; Kimura H.; Tomiyasu K.
Meeting Abstracts of the Physical Society of Japan, 2011

25pPSA-67 Observation of Magnetic Diffuse Scattering of Fe-Alloys by Polarized Neutron
Tsutsumi K.; Ohoyama K.; Hiraka H.; Yamaguchi Y.; Ino T.; Kira H.; Sakaguchi K.; Oku T.; Arimoto Y.; Takeda M.; Suzuki J.; Iwasa K.; Yamada K.; Kakurai K.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2010

24aWZ-13 Present Status of Polarised Neutron Diffraction Experiments in Tohoku Univ.
Ohoyama K.; Tsutsumi K.; Hiraka H.; Ino T.; Kira H.; Sakaguchi K.; Oku T.; Arimoto Y.; Takeda M.; Suzuki J.; Horigane K.; Iwasa K.; Wu F.; Kubota T.; Mizukami S.; Miyazaki T.; Yamada K.; Kakurai K.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2010

大強度型パルス中性子小中角散乱装置「大観」の開発 III
鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 吉良弘; 中谷健; 稲村泰弘; 伊藤崇芳; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集, 18 Aug. 2010

20aPS-30 Application of Polarized Neutron by ^3He Filter Technique for Condensed-Matter Physics : Development of Spin Control Devices
Tsutsumi K.; Ohoyama K.; Hiraka H.; Yamaguchi Y; Ino T.; Oku T.; Sakaguchi K.; Kira H.; Arimoto Y.; Takeda M.; Suzuki J.; Iwasa K.; Yamada K.; Kakurai K.
Meeting abstracts of the Physical Society of Japan, 01 Mar. 2010

23pHT-7 Development of glass cells for polarized ^3He neutron spin filters
Sakaguchi Y.; Kira H.; Oku T.; Suzuki J.; Nakamura M.; Arai M.; Endoh Y.; Kakurai K.; Takeda M.; Wakimoto S.; Yamazaki D.; Koizumi S.; Arimoto Y.; Ino T.; Shimizu H. M.; Kamiyama T.; Ohyama K.; Hiraka H.; Tsutsumi K.; Yamada K.
Meeting abstracts of the Physical Society of Japan, 01 Mar. 2010

23pHT-8 Development of Polarization Measurement Devices for Polarized ^3He Gas Neutron Spin Filters
Kira H.; Sakaguchi Y.; Oku T.; Suzuki J.; Nakamura M.; Arai M.; Endo Y.; Kakurai K.; Arimoto Y.; Ino T.; Shimizu H.; Kamiyama T.; Sato H.; Sato T.; Kamiyama T.; Kiyanagi Y.; Tsutumi K.; Ohoyama K.; Hiraka H.; Yamada K.
Meeting abstracts of the Physical Society of Japan, 01 Mar. 2010

20aPS-17 Quantitative evaluation of magnetic cluster size in perpendicular magnetic recording media
Hagiya H; Oku T; Suzuki J; Kira H; Shinohara T; Kakurai K; Yokoyama M; Nishihara Y; Mamiya H; Oba Y; Ohnuma M
Meeting abstracts of the Physical Society of Japan, 01 Mar. 2010

偏極³He中性子スピンフィルターのガラスセルの開発状況
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 鈴谷賢太郎; 相澤一也; 新井正敏; 武田全康; 遠藤康夫; CHANG L.J; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 堤健之; 山田和芳; 尾原幸治; 加倉井和久
日本中性子科学会年会講演概要集, 2010

中性子小角散乱装置SANS‐J‐IIにおける³Heスピンフィルターを用いた偏極解析
坂口佳史; 吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 酒井健二; 中村充孝; 相澤一也; 新井正敏; 能田洋平; 小泉智; 武田全康; 遠藤康夫; CHANG L.J; 有本靖; 猪野隆; 清水裕彦; 神山崇; 大山研司; 平賀晴弘; 堤健之; 山田和芳; 加倉井和久
日本中性子科学会年会講演概要集, 2010

J‐PARC大強度型中性子小中角散乱装置「大観」の開発
鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 吉良弘; 中谷健; 稲村泰弘; 伊藤崇芳; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本中性子科学会年会講演概要集, 2010

パルス中性子小中角散乱装置「大観」の開発　　　　　　　　　　　　　　　
鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 吉良弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本中性子科学会誌「波紋」, 2010

Small-Angle Neutron Scattering Study on Ferromagnetic Pd Nanoparticles using Polarised Neutrons　　　　　　　　　　　　　　　
Y. Oba; T. Shinohara; T. Oku; J. Suzuki; M. Ohnuma; T. Sato
XIV International Conference on Small-Angle Scattering, Oxford, United Kingdom, Sep. 2009

27pYK-11 Development of a neutron diffractometer with the ^3He spin filter technique
Ohoyama K.; Hiraka H.; Tsutsumi K.; Ino T.; Oku T.; Kira H.; Sakaguchi K.; Arimoto Y.; Takeda M.; Suzuki J.; Yamada K.; Kakurai K.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2009

27pYK-10 Development of polarized ^3He neutron spin filters III
Sakaguchi Y.; Kira H.; Oku T.; Suzuki J.; Nakamura M.; Arai M.; Endo Y.; Kakurai K.; Takeda M.; Wakimoto S.; Yamazaki D.; Koizumi S.; Arimoto Y.; Ino T.; Shimizu H. M.; Kamiyama T.; Ohyama K.; Hiraka H.; Yamada K.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2009

27pYK-8 Development of Polarized ^3He Neutron Spin Filters I
Arimoto Y.; Ino T.; Shimizu H. M.; Kamiyama T.; Kira H.; Sakaguchi Y.; Oku T.; Suzuki J.; Nakamura M.; Arai M.; Endo Y.; Kakurai K.; Ohyama K.; Hiraka H.; Yamada K.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2009

大強度型パルス中性子小中角散乱装量「大観」の開発 II
鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 吉良弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集, 18 Aug. 2009

25pPSA-28 A polarized SANS study of media on perpendicular magnetic recording
Hagiya H; Oku T; Suzuki J; Kira H; Shinohara T; Kakurai K; Yokoyama M; Nishihara Y; Mamiya H; Oba Y; Onuma M
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2009

Development of a neutron-polarizing device based on a quadrupole magnet and its application to a focusing SANS instrument
Oku Takayuki
Hamon, Jul. 2009

28aPS-99 Intraparticle magnetic structure and origin of the ferromagnetism in Pd nanoparticles
Oba Y.; Shinohara T.; Oku T.; Suzuki J.; Sato T.
Meeting abstracts of the Physical Society of Japan, 03 Mar. 2009

磁気ミラーを用いた直交配置型中性子偏極素子の開発
篠原武尚; 奥隆之; 鈴木淳市; 高田慎一; 吉良弘; 相澤一也; 新井正敏
日本物理学会講演概要集, 03 Mar. 2009

複合多極磁石による中性子集光デバイスの開発
吉良弘; 奥隆之; 篠原武尚; 鈴木淳市; 高田慎一; 新井正敏
日本物理学会講演概要集, 03 Mar. 2009

パルス中性子集光用磁気複合光学系の開発
奥隆之; 吉良弘; 篠原武尚; 高田慎一; 新井正敏; 鈴木淳市
日本物理学会講演概要集, 03 Mar. 2009

大強度型パルス中性子小中角散乱装置の開発
鈴木淳市; 高田慎一; 篠原武尚; 奥隆之; 吉良弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本物理学会講演概要集, 03 Mar. 2009

Development of Fe_<16>N_2 Ultra Fine Particles for High Density Recording Media
SASAKI Yuji; INOUE Tetsutaro; WATANABE Toshiyuki; DOI Tsugihiro; KISHIMOTO Mikio; OKU Takayuki; KAKURAI Kazuhisa
ITE technical report, 15 Jan. 2009

Development of Fe_<16>N_2 Ultra Fine Particles for High Density Recording Media
SASAKI Yuji; INOUE Tetsutaro; WATANABE Toshiyuki; DOI Tsugihiro; KISHIMOTO Mikio; OKU Takayuki; KAKURAI Kazuhisa
IEICE technical report, 08 Jan. 2009

Magnetic Materials Investigation Using Polarized Neutron Scattering
KAKURAI K; OKU T
Magnetics Japan, 01 Jan. 2009

27aSG-3 Experiments for focusing pulsed very cold neutron beam by modulated permanent magnet sextupole lens
Yamada M; Taketani K; Yoshioka T; Mutou S; Oku T; Suzuki J; Hirota K; Seki Y; Kawasaki S; Kamiya Y; Otono H; Iwashita Y; Ichikawa M; Sugimoto T; Tongu H; Fujisawa H; Shimizu H. M; Ino T; Mishima K
Meeting Abstracts of the Physical Society of Japan, 2009

27aSG-6 Project of search for new intermediate-range interactions via neutron scattering at J-PARC BL05 beam line
Shima T.; Hino M.; Seki Y.; Hirota K.; Ohtake Y.; Sakai K.; Suzuki J.; Oku T.; Shinohara T.; Otono H.; Yamashita S.; Shimizu H. M.; Suzuki Y.; Sanuki T.; NOP collaboration; Ino T.; Mishima K.; Taketani K.; Yoshioka M.; Mutoh S.; Funahashi H.; Kitaguchi M.
Meeting Abstracts of the Physical Society of Japan, 2009

27pYK-2 Neutron Optics and Physics (NOP) beamline BL05 at J-PARC/MLF
Ino T.; Kubota T.; Yamashita S.; Suzuki Z.; Sanuki T.; Sakai K.; Suzuki J.; Oku T.; Shinohara T.; Kitaguchi M.; Hino M.; Mishima K.; Yamada M.; Iwashita Y.; Shima T.; Seki Y.; Funahashi H.; Hirota K.; Otake Y.; Taketani K.; Yoshioka T.; Arimoto Y.; Muto S.; Shimizu H. M.; Otono H.; Oide H.
Meeting Abstracts of the Physical Society of Japan, 2009

中性子小中角散乱装置(大観)の検出器配置および広域構造解析の検討について
高田慎一; 篠原武尚; 鈴木淳市; 奥隆之; 吉良弘; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本中性子科学会年会講演概要集, 2009

21pPSA-26 Small-angle neutron scattering investigation of Pd nanoparticle using polarized neutrons
Oba Y.; Shinohara T.; Oku T.; Suzuki J.; Sato T.
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2008

24pWG-11 Development and application of multiple sextupole magnet for focusing of polychromatic neutron beam
Suzuki Jun-ichi; Oku Takayuki; Shinohara Takenao; Ohba Yojiro; Kikuchi Takayuki; Shimizu Hirohiko M.; Pynn Roger
Meeting abstracts of the Physical Society of Japan, 29 Feb. 2008

24pWG-10 Developments for 2-3 Dimensional Prompt Gamma-ray Analysis System at JAEA
Segawa M.; Matsue H.; Yamada S.; Shinohara T.; Oku T.; Sasao H.; Suzuki J.; Shimizu H.
Meeting abstracts of the Physical Society of Japan, 29 Feb. 2008

23aPS-35 A small-angle polarized neutron scattering study of spherical Fe-N nano-particles for magnetic recording tape
Oku T.; Kikuchi T.; Shinohara T.; Suzuki J.; Ishii Y.; Takeda M.; Kakurai K.; Sasaki Y.; Kishimoto M.; Yokoyama M.; Nishihara Y.
Meeting abstracts of the Physical Society of Japan, 29 Feb. 2008

23aPS-34 Magnetization process of nano crystalline soft magnets studied by small-angle polarized neutron scattering experiments
Shionohara T; Suzuki J; Ohnuma M; Oku T; Ohnuma S
Meeting abstracts of the Physical Society of Japan, 29 Feb. 2008

23pSM-6 Development of Modulating Permanent Magnet Sextupole for Focusing of pulsed cold neutrons II
Yamada M; Taketani K; Yoshioka T; Mutou S; Morishima T; Oku T; Suzuki J; Shinohara T; Sakai K; Sato H; Hirota K; Iwashita Y; Otake Y; Seki Y; Kawasaki S; Komamiya S; Kamiya Y; Otono H; Yamashita S; Ichikawa M; Sugimoto T; Tongu H; Fujisawa H; Shimizu H.M; Ino T; Mishima K
Meeting Abstracts of the Physical Society of Japan, 2008

New Development in Nanostructure Analysis by Smaller-Angle Neutron Scattering Instrument of J-PARC
SUZUKI Jun-ichi; SHINOHARA Takenao; TAKATA Shin-ichi; OKU Takayuki; SUZUYA Kentaro; AIZAWA Kazuya; ARAI Masatoshi; OTOMO Toshiya; SUGIYAMA Masaaki
X-RAYS, 2008

Development of micro pattern gas detectors in the University of Tokyo
FUJITA Kaoru; TAKAHASHI Hiroyuki; NIKO Hisako; TAKADA Yuka; INO Takashi; SHIMIZU Hirohiko M; KISHIMOTO Shunji; OKU Takayuki; SUZUKI Jun-ichi; FURUSAKA Michihiro; KANAZAWA Masakazu
電気学会研究会資料. NE, 原子力研究会, 06 Sep. 2007

21aTC-3 Application of a neutron polarizing device based on a quadrupole magnet to a focusing SANS instrument with a magnetic neutron lens.
Oku T.; Shinohara T.; Kikuchi T.; Oba Y.; Iwase H.; Koizumi S.; Suzuki J.; Shimizu H.M.
Meeting abstracts of the Physical Society of Japan, 21 Aug. 2007

21aTC-1 Development of magnetic lenses for neutron beam focus and polarization (3)
Muto S.; Ino T.; Iwashita Y.; Oku T.; Kaneko N.; Kawai M.; Kobayashi Y.; Sagehashi H.; Shinohara T.; Shimizu H.M.; Suzuki J.; Tahara T.; Hirota K.; Morishima T.
Meeting abstracts of the Physical Society of Japan, 21 Aug. 2007

21pPSB-63 A polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape III
Kikuchi T.; Oku T.; Shinohara T.; Suzuki J.; Ishii Y.; Takeda M.; Kakurai K.; Sasaki Y.; Kishimoto M.; Yokoyama M.; Nishihara Y.
Meeting abstracts of the Physical Society of Japan, 21 Aug. 2007

中性子ビーム偏極集光磁気レンズの開発2−永久磁石による四極磁気レンズと可変六極磁気レンズの試作−　　　　　　　　　　　　　　　
猪野隆; 岩下芳久; 奥隆之; 金子直勝; 川合將義; 小林庸男; 下ヶ橋秀典; 佐藤節夫; 篠原武尚; 清水裕彦; 鈴木淳市; 田原俊央; 広田克也; 武藤豪; 森嶋隆裕
日本物理学会 2007年春季大会 ,鹿児島大学郡元キャンパス, 19 Mar. 2007

中性子ビーム偏極集光磁気レンズの開発1−永久磁石による四極磁気レンズと可変六極磁気レンズの設計−　　　　　　　　　　　　　　　
猪野隆; 岩下芳久; 奥隆之; 金子直勝; 川合將義; 小林庸男; 下ヶ橋秀典; 佐藤節夫; 篠原武尚; 清水裕彦; 鈴木淳市B; 田原俊央; 広田克也; 武藤豪; 森嶋隆裕
日本物理学会 2007年春季大会 ,鹿児島大学郡元キャンパス, 19 Mar. 2007

18aPS-25 A polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape II.
Oku T.; Kikuchi T.; Oba Y.; Shinohara T.; Suzuki J.; Ishii Y.; Oitani S.; Takeda M.; Kakurai K.; Yokoyama M.; Nishihara Y.; Sasaki Y.; Kishimoto M.
Meeting abstracts of the Physical Society of Japan, 28 Feb. 2007

19aXB-8 Focusing of pulsed polychromatic neutron beam by a compound sextupole magnet
Suzuki J.; Oku T.; Shinohara T.; Shimizu H. M.; Pynn Roger
Meeting abstracts of the Physical Society of Japan, 28 Feb. 2007

次世代J‐PARC小中角散乱装置HI‐SANSの基本概念
鈴木淳市; 篠原武尚; 高田慎一; 奥隆之; 鈴谷賢太郎; 相澤一也; 新井正敏; 大友季哉; 杉山正明
日本中性子科学会年会講演概要集, 2007

J‐PARCナノ構造解析装置(HI‐SANS)におけるデータ解析および検出器配置の検討
高田慎一; 鈴木淳市; 篠原武尚; 奥隆之; 鈴谷賢太郎; 相澤一也; 大友季哉; 杉山正明; 新井正敏
日本中性子科学会年会講演概要集, 2007

ナノ構造解析装置HI‐SANSの設計と遮蔽計算
篠原武尚; 高田慎一; 鈴木淳市; 奥隆之; 鈴谷賢太郎; 相澤一也; 大友季哉; 杉山正明; 新井正敏
日本中性子科学会年会講演概要集, 2007

Characteristics of MS-tube as a position sensitive neutron detector
Fujita Kaoru; Oku Takayuki; Suzuki Jun-ichi; Toyokawa Hidenori; Kanazawa Masakazu; Takahashi Hiroyuki; Niko Hisako; Nishi Kosuke; Takada Yuka; Furusaka Michihiro; Ino Takashi; Shimizu Hirohiko; Kishimoto Shunji
Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2007

23aPS-28 A polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape
Kikuchi T.; Oku T.; Shinohara T.; Suzuki J.; Ishii Y.; Takeda M.; Kakurai K.; Sasaki Y.; Kishimoto M.; Yokoyama M.; Nishihara Y.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2006

20aSF-4 Highly polarized neutron beam produced by a quadrupole magnet and its application to fundamental physics
Yamada S.; Oku T.; Mishima K.; Sato H.; Hirota K.; Morishima T.; Ohno M.; Shinohara T.; Suzuki J.; Shimizu H.M.
Meeting abstracts of the Physical Society of Japan, 18 Aug. 2006

30aWD-2 原研3号炉での中性子ベータ崩壊実験(NBD)について : ベータ崩壊イベントの測定(30aWD 対称性・基礎物理,実験核物理領域)
山田 悟; 三島 賢二; 佐藤 広海; 広田 克也; 篠原 武尚; 森嶋 隆裕; 大野 雅史; 奥 隆之; 鈴木 淳市; 清水 裕彦
日本物理学会講演概要集, 04 Mar. 2006

30pXD-5 Development of a neutron polarizer based on a quadrupole magnet
Oku T.; Yamada S.; Suzuki J.; Mishima K.; Shinohara T.; Ikeda K.; Hirota K.; Sato H.; Shimizu H.M.
Meeting abstracts of the Physical Society of Japan, 04 Mar. 2006

30pXD-7 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal Neutrons
Ikeda K; Shinohara T; Hirota K; Sato H; Shimizu H.M; Hino M; Oku T; Suzuki J; Soyama K; Ohoyama K; Hiraka H
Meeting abstracts of the Physical Society of Japan, 04 Mar. 2006

即発γ線を用いた2次元元素分布測定システムの開発
瀬川麻里子; 松江秀明; 関谷祐二; 山田悟; 篠原武尚; 奥隆之; 笹尾一; 鈴木淳市; 清水裕彦
日本放射化学会年会・放射化学討論会研究発表要旨集, 2006

Gd系薄膜シンチレータの開発(2)~焼結による薄膜化~
土田昇平; 春名潤; 金子純一; 山口達; 須佐憲三; 三浦誠司; 奥隆之; 藤田文行; 本間彰; 沢村晃子; 古坂道弘; 清水裕彦; 鬼柳善明
日本原子力学会春の年会要旨集(CD-ROM), 2006

Gd系薄膜シンチレータの開発(3)~Gdパイロシリケイト粉体シンチレータの合成と評価~
山口達; 春名潤; 金子純一; 須佐憲三; 三浦誠司; 八木康洋; 川村宗範; 奥隆之; 藤田文行; 本間彰; 石橋浩之; 沢村晃子; 古坂道弘; 清水裕彦; 鬼柳善明
日本原子力学会春の年会要旨集(CD-ROM), 2006

Development and application of focusing devices for pulsed neutrons　　　　　　　　　　　　　　　
J. Suzuki; T. Oku; T. Adachi; H.M. Shimizu; Y. Kiyanagi; T. Kamiyama; H. Iwasa; K. Sato; M. Furusaka; K. Niita
Proc. of the 17th Meeting of the International Collaboration on Advanced Neutron Sources, Apr. 25-29, 2005, Santa Fe, 2006

Conceptual design of the high-intensity small-angle neutron scattering instrument (HI-SANS) for J-PARC　　　　　　　　　　　　　　　
J. Suzuki; T. Oku; K. Aizawa; S. Koizumi; S. Fujiwara; M. Sugiyama; T. Otomo; M. Furusaka; M. Shibayama; M. Hirai; M. Ohnuma; H.M. Shimizu; H.B. Stuhrmann
Proc. of the 17th Meeting of the International Collaboration on Advanced Neutron Sources, Apr. 25-29, 2005, Santa Fe, 2006

Simulation calculations of neutron transport through a pulsed magnetic lens to focus neutron beam from a pulsed neutron source　　　　　　　　　　　　　　　
Y. Kiyanagi; T. Tanimura; T. Kamiyama; J. Suzuki; T. Oku; H.M. Shimizu
Proc. of the 17th Meeting of the International Collaboration on Advanced Neutron Sources, Apr. 25-29, 2005, Santa Fe, 2006

15aSE-6 R&D of MSGC with Global-Local Grouping method
Niko Hisako; Takahashi Hiroyuki; Fujita Kaoru; Siritiprussaniee Prasit; Nakazawa Masaharu; Furusaka Michihiro; Ino Takashi; Suzuki Junichi; Oku Takayuki
Meeting abstracts of the Physical Society of Japan, 19 Aug. 2005

Development of a Nb_3Sn Coil for a Magnetic Neutron Lens (2)
OKAMOTO K.; NAKAMURA K.; SEKI Y.; OHNO M.; TAKAO T.; OHUCHI N.; SHINTOMI T.; TSUCHIYA K.; ADACHI T.; SHIMIZU H.; OKU T.; SUZUKI J.; KIMURA S.; HANAI S.; URATA M.; WATANABE I.
低温工学・超電導学会講演概要集 = Meetings of Cryogenics and Superconductivity, 31 May 2005

即発γ線分析装置における収斂中性子ビーム利用
松江秀明; 山田悟; 鈴木淳市; 奥隆之; 笹尾一; 篠原武尚; 清水裕彦
日本放射化学会年会・放射化学討論会研究発表要旨集, 2005

即発ガンマ線分析のための熱中性子集光及び中性子ベータ崩壊測定準備実験
山田悟; 笹尾一; 奥隆之; 鈴木淳市; 篠原武尚; 三島賢二; 広田克也; 佐藤広海; 清水裕彦; 松江秀明
KEK Proceedings, 2005

中性子磁気レンズ用Nb₃Snコイルの励磁試験
岡本佳祐; 中村一也; 大内徳人; 新冨孝和; 安達智宏; 清水裕彦; 奥隆之; 鈴木淳市; 木村諭
電気学会全国大会講演論文集, 2005

25aYS-2 Development of Neutron Focusing Devices using Supermirrors with a Parabolic Surface for Thermal and Cold Neutrons
Ikeda K.; Guo J.; Suzuki T.; Uehara Y.; Lin W.; Ohmori H.; Hino M.; Tasaki S.; Oku T.; Suzuki J.; Adachi T.; Soyama K.; Ohoyama K.; Hiraka H.; Shinohara T.; Morishima T.; Hirota K.; Mishima K.; Sato H.; Shimizu H. M.; Morita S.
Meeting Abstracts of the Physical Society of Japan, 2005

Development of magnetic neutron lenses and their application to focusing geometry SANS
Oku Takayuki; Suzuki Jun-ichi; Shimizu Hirohiko M.
hamon, 2005

12pTJ-2 Development of Neutron Focusing Devices with Curved Supermirror for Thermal and Cold Neutrons
Ikeda Kazuaki; Adachi Tomohiro; Shinohara Takenao; Morishima Takahiro; Takizawa Yoshiyuki; Sato Hiromi; Shimizu Hirohiko M.; Sakai Kenji; Hino Masahiro; Tasaki Seiji; Oku Takayuki; Soyama Kazuhiko
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

12pTJ-3 Development of Focusing Small Angle Scattering instruments : Pinhole to Focusing
Adachi Tomohiro; Ikada Kazuaki; Shinohara Takenao; Hirota Katsuya; Oku Takayuki; Suzuki Jyunichi; Shimizu Hirohiko M.
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

12pTJ-1 Development of a Material Prism for Thermal Neutrons by Perfluoropolymer
Shinohara T.; Adachi T.; Ikeda K.; Hirota H.; Oku T.; Suzuki J.; Shimizu H. M.
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

12pTJ-7 Development of position sensitive neutron detector using PMT
Hirota Katsuya; Satoh Setsuo; Sakai Kenji; Oku Takayuki; Adachi Tomohiro; Ikeda Kazuaki; Shinohara Takenao; Mishima kenji; Morishima Takahiro; Shimizu Hirohiko M.
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

12aPS-132 Development of a focusing geometry SANS instrument using a magnetic neutron lens
Oku T; Sasao H; Yamada S; Ikeda K; Suzuki J; Adachi T; Ikeda K; Shinohara T; Furusaka M; Shimizu H M
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

12aPS-17 Magnetic Structure of Pd Fine Particles Studied by Focusing Small Angle Polarized Neutron Scattering
Shinohara T; Oku T; Suzuki J; Ikeda K; Sato T; Adachi T; Ikeda K; Shimizu H M
Meeting abstracts of the Physical Society of Japan, 25 Aug. 2004

27aXM-1 Development of the Multilayered Supermirrors with Curved Surface as a Neutron Optics Device
Ikeda Kazuaki; Adachi Tomohiro; Shinohara Takenao; Morishima Takahiro; Takizawa Yoshiyuki; Sato Hiromi; Shimizu Hirohiko M; Sakai Kenji; Hino Masahiro; Tasaki Seiji; Oku Takayuki; Soyama Kazuhiko
Meeting abstracts of the Physical Society of Japan, 03 Mar. 2004

シンチレーション型中性子検出器の開発
酒井健二; 安達智宏; 奥隆之; 猪野隆; 佐藤節夫; 鈴木淳市; 鬼柳善明; 坂本昇; LITTRELL K
KURRI KR, Mar. 2004

中性子集光光学の応用-中性子ベータ崩壊基礎測定装置の建設と即発ガンマ線分析装置の性能向上
山田悟; 笹尾一; 奥隆之; 鈴木淳市; 篠原武尚; 三島賢二; 広田克也; 佐藤宏海; 松江秀明
日本中性子科学会年会講演概要集, 2004

GSO中性子シンチレータの合成と評価
山口達; 金子純一; 三浦誠司; 須佐憲三; 奥隆之; 藤田文行; 本間彰; 古坂道弘; 清水裕彦
日本中性子科学会年会講演概要集, 2004

GSO中性子シンチレータ薄膜化の試み
土田昇平; 山口達; 金子純一; 須佐憲三; 三浦誠司; 奥隆之; 藤田文行; 古坂道弘; 清水裕彦
日本中性子科学会年会講演概要集, 2004

スペクトル可変型中性子ラジオグラフィの開発
KAWABATA YUJI; HINO MASAHIRO; NAKANO TAKAFUMI; SUNOHARA HIROAKI; OKU TAKAYUKI; SUZUKI JUN'ICHI; MATSUSHIMA UZUKI
京都大学原子炉実験所学術講演会報文集, Jan. 2004

Li₂O‐B₂O₃:Re³⁺(Re=Ce or Gd)系ガラスのシンチレーション特性
細谷正一; 西村博; 小野寺貢; 山田和芳; 石井満; 浅井宰里; 酒井健二; 奥隆之; 池田一昭
日本中性子科学会年会講演概要集, 2004

波長変換ファイバーを用いたシンチレーター型中性子位置検出器の開発
酒井健二; 奥隆之; 鈴木淳市; 広田克也; 安達智宏; 古坂道弘; 佐藤節夫; 鬼柳善明; 坂本昇
日本中性子科学会年会講演概要集, 2004

Recent development of a position-sensitive scintillator detector employing wavelength-shifting cross-fiber　　　　　　　　　　　　　　　
K. Sakai; T. Adachi; T. Oku; K. Ikeda; T. Morishima; H.M. Shimizu; M. Furusaka; T. Ino; S. Sato; Y. Kiyanagi; N. Sakamoto; T. Sakuma; J. Suzuki; K.C. Littrell; C.-K. Loong; R. Goyette; S. Hosoya; M. Ishii
Proc. the 16th Meeting of the International Collaboration on Advanced Neutron Sources, May 12-15, 2003, Neuss, 2004

Magnetic focusing devices for pulsed neutrons　　　　　　　　　　　　　　　
J. Suzuki; T. Oku; T. Adachi; H.M. Shimizu; Y. Kiyanagi; M. Furusaka
Proc. the 16th Meeting of the International Collaboration on Advanced Neutron Sources, May 12-15, 2003, Neuss, 2004

A compound focusing device for cold neutrons　　　　　　　　　　　　　　　
T. Adachi; K. Ikeda; T. Oku; J. Guo; W. Lin; H. Ohmori; T. Morishima; H.M. Shimizu; K. Sakai; J. Suzuki; K.C. Littrell; C.-K. Loong
Proc. the 16th Meeting of the International Collaboration on Advanced Neutron Sources, May 12-15, 2003, Neuss, 2004

Development of a Halbach-type permanent sextupole magnet for neutron beam focusing　　　　　　　　　　　　　　　
T. Oku; J. Suzuki; T. Adachi; K. Sakai; K. Ikeda; T. Morishima; Y. Kiyanagi; M. Furusaka; T. Tsuzaki; H.M. Shimizu
Proc. the 16th Meeting of the International Collaboration on Advanced Neutron Sources, May 12-15, 2003, Neuss, 2004

六極磁石を使った中性子磁気レンズの開発　　　　　　　　　　　　　　　
鈴木淳市; 奥隆之
原研ニュース, 2004

Scenario to Focusing Polarized Small-Angle Neutron Scattering Spectrometer SANS-J-II
Koizumi Satoshi; Iwase Hiroki; Tanaka Hirokazu; Hashimoto Takeji; Suzuki Jun-ichi; Oku Takayuki; Sasao Hajime; Shimizu Hirohiko M.
hamon, 2004

28aZK-4 Imaging for polarized X-ray II with Capillary gas proportional counter at synchrotron facilities
Sakurai H; Oku T; Tokanai F; Gunji S; Motegi S; Toyokawa H; Suzuki M; Hirota K; Kishimoto S; Suzuki J
Meeting Abstracts of the Physical Society of Japan, 2004

高コントラスト中性子ラジオグラフィの高度化
KAWABATA YUJI; NAKANO TAKAFUMI; HINO MASAHIRO; SUNOHARA HIROAKI; OKU TAKAYUKI; SUZUKI JUN'ICHI; MATSUSHIMA UZUKI
日本中性子科学会年会講演概要集, 10 Dec. 2003

パルス中性子源のための実用的なスピンフリップチョッパーの開発
海老沢徹; 山崎大; 曽山和彦; 丸山龍治; 酒井健二; 奥隆之; 日野正裕; 田崎誠司
日本中性子科学会年会講演概要集, 10 Dec. 2003

曲面多層膜スーパーミラーによる冷中性子収束光学素子の開発
池田一昭; 安達智宏; 森嶋隆裕; 清水裕彦; 酒井健二; 日野正裕; 田崎誠司; 奥隆之; 曽山和彦
日本中性子科学会年会講演概要集, 10 Dec. 2003

非晶質フッ素系樹脂を用いた熱中性子用屈折光学素子の開発
篠原武尚; 安達智宏; 池田一昭; 森嶋隆裕; 広田克也; 酒井健二; 奥隆之; 鈴木淳市; 清水裕彦
日本中性子科学会年会講演概要集, 10 Dec. 2003

Ce³⁺で賦活したLi₂O‐B₂O₃ガラスの発光特性‐中性子高速シンチレータの開発
細谷正一; 小野寺貢; 山田和芳; 林卓; 石井満; 酒井健二; 池田一昭; 安達智宏; 奥隆之
人工結晶討論会講演要旨集, 04 Nov. 2003

Intraparticle magnetic strucutre of Pd particles studied using F-SANS experiments
Shinohara T.; Adachi T.; Ikeda K.; Morishima T.; Oku T.; Suzuki J.; Sakai K.; Kiyanagi Y.; Furusaka M.; Shimizu H. M.
Meeting abstracts of the Physical Society of Japan, 15 Aug. 2003

Development of magnetic neutron lenses and their application to neutron scattering experiments
Oku T.; Suzuki J.; Adachi T.; Ikeda K.; Morishima T.; Shinohara T.; Sakai K.; Kiyanagi Y.; Furusaka M.; Shimizu H. M.
Meeting abstracts of the Physical Society of Japan, 15 Aug. 2003

On-chip coil-integrated STJ using the persistent superconducting current for photon detectors
K Kikuchi; T Taino; M Nanme; H Nakagawa; M Aoyagi; H Sato; H Akoh; T Iizuka; H Myoren; S Takada; K Maehata; K Ishibashi; H Sato; T Ikeda; C Otani; Y Takizawa; T Oku; K Kawai; H Miyasaka; HM Shimizu; H Kato; H Watanabe
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, Jun. 2003

中性子用GSOシンチレータの開発 (1) 機械研磨による薄膜化
渡辺正智; 平井佑樹; 金子純一; 鬼柳善明; 沢村晃子; 猪野隆; 古坂道弘; 奥隆之; 清水裕彦
日本原子力学会春の年会要旨集, 2003

冷中性子用高位置分解能イメージ検出器の開発　　　　　　　　　　　　　　　
酒井健二; 安達智宏; 池田一昭; 清水裕彦; 佐藤節夫; 古坂道弘; 猪野隆; 鬼柳善明; 坂本昇; 佐久間徹; 奥隆之; 鈴木淳市; K.C. Littrell; C.-K. Loong; R. Gotette
放射線, 2003

集光型小角散乱装置の開発~設計概念,実現方法~
奥隆之; 安達智宏; 池田一昭; 酒井健二; 森嶋隆裕; 清水裕彦; 鈴木淳市; LITTRELL K; 古坂道弘
日本中性子科学会年会講演概要集, 09 Dec. 2002

曲面多層膜スパーミラーによる中性子光学素子の開発
池田一昭; 安達智宏; 奥隆之; 酒井健二; 森嶋隆裕; 滝沢慶之; 佐藤広海; 清水裕彦
日本中性子科学会年会講演概要集, 09 Dec. 2002

中性子化合物光学素子の表面状態の効果と集光特性
安達智宏; 奥隆之; 池田一昭; GUO J; LIN W; 大森整; 森嶋隆裕; 酒井健二; 鈴木淳市
日本中性子科学会年会講演概要集, 09 Dec. 2002

高S/N比をもつパルス中性子源用スピンフリップチョッパーの開発
海老沢徹; 田崎誠司; 丸山龍治; 酒井健二; 奥隆之; 山崎大; 日野正裕; 柴田薫; 渡辺昇
日本中性子科学会年会講演概要集, 09 Dec. 2002

中性子物質レンズ(MgF_2)のELID研削
林 偉民; 大森 整; 郭 建強; 三石 憲英; 安達 智宏; 池田 一昭; 奥 隆之; 清水 裕彦
精密工学会大会学術講演会講演論文集, 01 Oct. 2002

Development of a Small-angle Neutron Scattering Instrument with Focusing Configuration (II) : Development of a Superconducting Sextupole Magnet
Suzuki J.; Oku T.; Adachi T.; Shimizu H.M.; Hirumachi T.; Tsuchihashi T.; Watanabe I.
Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

Development of a Small-Angle Neutron Scattering instrument with focusing configuration(I) : Concept of Design,Realization,Estimation of Performace
Oku T.; Adachi T.; Sakai K.; Ikeda K.; Takizawa Y.; Morishima T.; Shimizu H.M.; Suzuki J
Meeting abstracts of the Physical Society of Japan, 13 Aug. 2002

On-chip coil integrated superconducting tunnel junction for a high performance X-ray detector
T Taino; K Kikuchi; M Nanme; H Nakagawa; M Aoyagi; H Sato; H Akoh; K Maehata; K Ishibashi; H Sato; C Otani; T Ikeda; T Oku; H Kato; K Kawai; H Miyasaka; Y Takizawa; H Watanabe; HM Shimizu
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, Aug. 2002

Prospect of a new generation telescope with superconducting tunnel junction detector
TAKIZAWA Yoshiyuki; M. SHIMIZU Hirohiko; OTANI Ciko; SATO Hiromi; OKU Takayuki; IKEDA Tokihiro; KAWAI Kazuhiko
Ionizing radiation., 01 Apr. 2002

27pWG-9 Development of the Multilayered Supermirror with Curved Surface as a Neutron Optics Device
Ikeda Kazuaki; Takizawa Yoshiyuki; Oku Takayuki; Adachi Tomohiro; Suzuki Shun; Sakai Kenji; Sato Hiromi; Otani Chiko; Shimizu Hirohiko
Meeting abstracts of the Physical Society of Japan, 01 Mar. 2002

Development of a superconducting analog-to-digital converter as a readout for high-resolution X-ray detectors based on a superconducting tunnel junction
T Oku; T Ikeda; C Otani; K Kawai; H Sato; HM Shimizu; H Miyasaka; Y Takizawa; H Watanabe; W Ootani; H Akoh; H Nakagawa; M Aoyagai; T Taino
IEICE TRANSACTIONS ON ELECTRONICS, Mar. 2002

超伝導トンネル接合素子を用いた近赤外~可視~紫外~極端紫外域の一光子分光検出器の開発(III)
志岐成友; 大谷知行; 佐藤広海; 滝澤慶之; 池田一昭; 池田時浩; 奥隆之; 川井和彦; 清水裕彦; 宮坂浩正; 森嶋隆裕; 渡辺博; 有吉誠一郎; 仲川博; 赤穂博司; 青柳昌宏; 田井野徹
日本天文学会年会講演予稿集, 2002

Crystal Growth and Scintillation Characteristics of LBO:Cu for Neutron Detectors
Ishii M; Suzuki J; Senguttuvan N; Susa K; Kuwano Y; Sato H; Tanaka S; Kobayashi M; Oku T; Adachi T; Sakai K; Shimizu H.M
Journal of the Japanese Association for Crystal Growth, 2002

Crystal Growth and Characterization of doped LBO(Li2B4O7) for Neutron Detectors.
SENGUTTUVAN N; 下山昌哉; 石井満; 小林正明; NIKL M; 奥隆之; 安達智之; 酒井健二; 鈴木淳市
人工結晶討論会講演要旨集, 03 Dec. 2001

318 Fabrication of quartz fresnel lens with fine grooves for neutron optics using ELID grinding
MORITA Shin-ya; OHMORI Hitoshi; YAMAGATA Yutaka; SHIMIZU Hirohiko M.; OKU Takayuki
The ... Manufacturing & Machine Tool Conference, 20 Nov. 2001

中性子物質フレネルレンズのELID研削加工
森田 晋也; 山形 豊; 大森 整; 奥 隆之; 清水 裕彦
精密工学会大会学術講演会講演論文集, 01 Sep. 2001

Convergence and divergence of neutron by magnet lens and spinflipper
Sasaki K; Koike G; Hirota T; Iwasa K; Kamiyama T; Kiyanagi Y; Oku T; Adati T; Shimizu H; Hino M; Tazaki S; Ebisawa T; Ino T; Furusaka M; Suzuki J
Meeting abstracts of the Physical Society of Japan, 09 Mar. 2001

X-ray spectroscopy of highly charged ions using superconducting tunnel junctions (II)
Ikeda T; Iwai Y; Oku T; Oshima N; Otani C; Oyama H; Kato H; Kanai Y; Kawai K; Sato H; Shimizu H. M; Takizawa Y; Nakai Y; Nishio K; Masuda H; Miyasaka H; Morishita Y; Watanabe H; Yamazaki Y
Meeting abstracts of the Physical Society of Japan, 09 Mar. 2001

X-ray detection by a superconducting tunnel junction with integrated coil
Nakagawa Hiroshi; Taino Toru; Aoyagi Masahiro; Sato Hiroshi; Akoh Hiroshi; Maehata Keisuke; Ishibashi Kenji; Sato Hiromi; Otani Chiko; Ikeda Tokihiro; Oku Takayuki; Kato Hiroshi; Kawai Kazuhiko; Takizawa Yoshiyuki; Miyasaka Hiromasa; Watanabe Hiroshi; Shimizu Hirohiko
Proceedings of the IEICE General Conference, 07 Mar. 2001

可視光天文学への応用
大谷知行; 池田時浩; 奥隆之; 渡辺博; 大谷航; 仲川博; 赤穂博司; 青柳昌宏; 田井野徹
STJ Workshop集録, 31 Jan. 2001

X-ray Detection using Superconducting Tunnel Junction with Microstrip-coil
Taino T; Nakagawa H; Aoyagi M; Sato H; Akoh H; Maehata K; Ishibashi K; Sato H; Ikeda T; Otani C; Oku T; Kato H; Kawai K; Takizawa Y; Miyasaka H; Watanabe H; Shimizu H.M
Technical report of IEICE. SCE, 17 Jan. 2001

Development of Neutron Optical Devices (Proceedings of the 1st International Symposium on Advanced Science Research(ASR-2000), Advances in Neutron Scattering Research)
Shimizu Hirohiko M.; Oku Takayuki
Journal of the Physical Society of Japan, 2001

2次元ファイバー検出器の性能テスト実験
鬼柳善明; 坂本昇; 奥隆之; 門叶冬樹; GORIN A; MANUILOV I; RIAZANTSEV A; 竹内富士雄; 黒田啓一
日本中性子科学会年会講演概要集, 2001

中性子検出用不純物添加LBO(Li₂B₄O₇)結晶の育成と評価
SENGUTTUVAN N; 下山昌哉; 石井満; 小林正明; NIKL M; 奥隆之; 安達智之; 酒井健二; 鈴木淳市
日本中性子科学会年会講演概要集, 2001

中性子散乱実験のための陽子核偏極装置の開発
佐藤広海; 奥隆之; 安達智弘; 清水裕彦; 酒井健二
日本中性子科学会年会講演概要集, 2001

中性子化合物光学素子の屈折角に対する表面状態の効果
安達智宏; 奥隆之; 清水裕彦; 酒井健二; 鈴木淳市; 武田全康
日本中性子科学会年会講演概要集, 2001

自由曲面多層膜スーパーミラーによる中性子光学素子の開発 (1)
池田一昭; 滝沢慶之; 奥隆之; 安達智宏; 酒井健二; 佐藤広海; 大谷知行; 清水裕彦
日本中性子科学会年会講演概要集, 2001

中性子光学素子の開発と応用
奥隆之; 安達智宏; 酒井健二; 大谷知行; 佐藤広海; 清水裕彦; 鈴木淳市; 古坂道弘; 鬼柳義明
日本中性子科学会年会講演概要集, 2001

偏極中性子制御装置のための高性能磁気ミラーの開発
奥隆之; 田崎誠司; 安達智宏; 坂本昇; 丸山龍治; 山崎大; 酒井健二; 曽山和彦; 海老沢徹
日本中性子科学会年会講演概要集, 2001

Development of detector based on neutron scintillator with wavelength shifting fiber　　　　　　　　　　　　　　　
T. Adachi; K. Sakai; A. Gorin; K. Kuroda; I. Manuilov; K. Morimoto; T. Oku; A. Ryazantsev; H.M. Shimizu; J. Suzuki; F. Tokanai
Proc. of the 15th Meeting of the International Collaboration on Advanced Neutron Sources, Nov. 6-9, 2000, Tsukuba, 2001

Development of optical devices based on neutron refractive optics　　　　　　　　　　　　　　　
T. Oku; S. Morita; S. Moriyasu; Y. Yamagata; H. Omori; T. Adachi; H.M. Shimizu; K. Sasaki; T. Hirota; H. Iwasa; T. Kamiyama; Y. Kiyanagi; T. Ino; M. Furusaka; J. Suzuki
Proc. of the 15th Meeting of the International Collaboration on Advanced Neutron Sources, Nov. 6-9, 2000, Tsukuba, 2001

Development of superconducting tunnel junctions for the detection of X-rays and heavy ions
HM Shimizu; T Ikeda; H Kato; K Kawai; H Miyasaka; T Oku; W Ootani; C Otani; H Sato; Y Takizawa; H Watanabe
IEICE TRANSACTIONS ON ELECTRONICS, Jan. 2001

Development of neutron optical device
Oku T.; Morita S.; Moriyasu S.; Yamagata Y.; Ohmori S.; Adachi T.; Shimizu H. M.; Kiyanagi Y.; Ino T.; Furusaka M.; Suzuki J.
Meeting abstracts of the Physical Society of Japan, 10 Sep. 2000

Detection of Heavy Ions by a Superconducting Tunnel Junction
Sato Hiromi; Ikeda Tokihiro; Otani Chiko; Ootani Wataru; Oku Takayuki; Kawai Kazuhiko; Shimizu Hirohiko M.; Takizawa Yoshiyuki; Miyasaka Hiromasa; Watanabe Hiroshi; Morimoto Koji; Tokanai Fuyuki
Meeting abstracts of the Physical Society of Japan, 10 Sep. 2000

超伝導トンネル接合素子を用いた重イオンの検出
佐藤広海; 池田時浩; 大谷知行; 大谷航; 奥隆之; 加藤博; 川井和彦; 清水裕彦; 滝沢慶之; 宮坂浩正; 渡辺博; 森本幸司; 門叶冬樹
応用物理学会学術講演会講演予稿集, 03 Sep. 2000

超伝導トンネル接合素子の漏れ電流抑制のための新手法とその効果
佐藤広海; 池田時浩; 大谷知行; 大谷航; 奥隆之; 加藤博; 川井和彦; 清水裕彦; 滝沢慶之; 宮坂浩正; 渡辺博; 赤穂博司; 青柳昌宏; 仲川博; 田井野徹
応用物理学関係連合講演会講演予稿集, 28 Mar. 2000

超伝導トンネル接合素子で得られたX線スペクトル中の基板フォノン構造の起源
大谷知行; 池田時浩; 大谷航; 奥隆之; 加藤博; 川井和彦; 佐藤広海; 清水裕彦; 滝沢慶之; 宮坂浩正; 渡辺博; 仲川博; 赤穂博司; 青柳昌宏; 田井野徹
応用物理学関係連合講演会講演予稿集, 28 Mar. 2000

磁気レンズの現状と今後の方針 (第5回中性子ビーム制御研究会)
奥 隆之
KURRI-KR, Jan. 2000

X-RAY SPECTROSCOPY OF HIGHLY CHARGED IONS USING SUPERCONDUCTING TUNNEL JUNCTIONS
IKEDA Tokihiro; IWAI Yoshio; OKU Takayuki; OTANI Chiko; KATO Hiroshi; KAWAI Kazuhiko; SATO Hiromi; SHIMIZU Hirohiko M; TAKIZAWA Yoshiyuki; NAKAI Yoichi; MIYASAKA Hiromasa; MORISHITA Yuichiro; WATANABE Hiroshi; YAMAZAKI Yasunori
Atomic collision research in Japan, 2000

Development of Superconducting Tunnel Junctions as Radiation Detectors
SHIMIZU H. M; SATO H; OTANI C; IKEDA T; KATO H; KAWAI K; MIYASAKA H; OKU T; OOTANI W; TAKIZAWA Y; WATANABE H; NAKAGAWA H; AKOH H; AOYAGI M; TAINO T
Ionizing radiation., 01 Jan. 2000

Fabrication of a superconducting tunnel junction with microstrip-coil for X-ray detector
NAKAGAWA H; AOYAGI M; AKOH H; TAINO T; MAEHATA K; ISHIBASHI K; SATO H; IKEDA T; OTANI C; OOTANI W; OKU T; KATO H; KAWAI K; TAKIZAWA Y; MIYASAKA H; WATANABE H; SHIMIZU H. M
Ionizing radiation., 01 Jan. 2000

26pYA-9 Development of X-ray Delection System with Superconducting Tunnel Junctions (VII)
Ikeda Tokihiro; Ootani W; Kato H; Kawai K; Matsuoka M; Miyasaka H; Oku T; Otani C; Sato H; Shimizu H.M; Takizawa Y; Watanabe H; Ako H; Aoyagi M; Nakagawa H; Takada S; Kino Y; Inaba K; Ishibashi K; Maehata K; Taino T
Meeting abstracts of the Physical Society of Japan, 03 Sep. 1999

26pPSA-67 Cold Neutron Beam Control
Oku T; Shimizu H.M; Kato H; Otani C; Sato H; Ikeda I; Hirota T; Iwasa H; Kamiyama T; Kiyanagi Y; Wakabayashi T; Ino T; Suzuki J
Meeting abstracts of the Physical Society of Japan, 03 Sep. 1999

SQUIDアンプを用いた高分解能X線検出器の開発
池田時浩; 佐藤広海; 大谷知行; 大谷航; 奥隆之; 赤穂博司; 青柳昌宏; 仲川博; 田井野徹
応用物理学会学術講演会講演予稿集, 01 Sep. 1999

GSO中性子検出器開発の現状 (低速中性子制御技術ワークショップ〔平成11年度 第1回〕)
奥 隆之; 廣田 智章
KURRI-KR, Jul. 1999

磁気および物質レンズによる冷中性子ビーム制御 (低速中性子制御技術ワークショップ〔平成11年度 第1回〕)
奥 隆之; 清水 裕彦
KURRI-KR, Jul. 1999

28a-YK-6 Development of X-ray Detection System with Superconducting Tunnel Junctions(VI)
Otani C; Ikeda T; Kato H; Kawai K; Matsuoka M; Miyasaka H; Oku T; Sato H; Shimizu H.M; Watanabe H; Ako H; Aoyagi M; Nakagawa H; Takada S; Kino Y; Inaba K; Ishibashi K; Maehata K; Taino T
Meeting abstracts of the Physical Society of Japan, 15 Mar. 1999

30p-XJ-10 Development of X-ray Detection System with Superconducting Tunnel Junctions (IV)
Ikeda Tokihiro; Otani C; Kato H; Kawai K; Matsuoka M; Miyasaka H; Oku T; Sato H; Shimizu H.M; Watanabe H; Ako H; Aoyagi M; Nakagawa H; Sato H; Takada S; Kino Y; Inaba K; Ishibashi K; Maehata K; Taino T
Meeting abstracts of the Physical Society of Japan, 15 Mar. 1999

31a-XJ-5 Cold Neutron Beam Control using Magnetic Field Gradient(III)
Oku T; Shimiz H.M; Kato H; Otani C; Sato H; Nakagawa H; Suda Y; Ogawa Y; Iwasa H; Kamiyama T; Kiyanagi Y; Wakabayashi T
Meeting abstracts of the Physical Society of Japan, 15 Mar. 1999

Fabrication of Superconducting Tunnel Junction with Magnetic Coil for X-ray Detector
Taino T; Nakagawa H; Aoyagi M; Akoh H; Maehata K; Ishibashi K; Sato H; Ikeda T; Otani C; Ootani W; Oku T; Kato H; Kawai K; Shimizu M.H; Takizawa H; Miyasaka H; Watanabe H
Technical report of IEICE. SCE, 27 Jan. 1999

Cold Neutron Beam Control using Magnetic Field Gradient(II)
SHIMIZU Hirohiko M
Meeting abstracts of the Physical Society of Japan, 05 Sep. 1998

Development of X-ray Detection System with Superconducting Tunnel Junctions(II)
OTANI C; IKEDA T; KATO H; KAWAI K; MATSUOKA M; MIYASAKA H; OKU T; SATO H; SHIMIZU H.M; WATANABE H; AKO H; AOYAGI M; NAKAGAWA H; TAKADA S; KINO Y; INABA K; ISHIBASHI K; MAEHATA K; TAINO T
Meeting abstracts of the Physical Society of Japan, 05 Sep. 1998

Development of Neutron 2-dimensional Detector
OKU T; KATO H; SHIMIZU H.M; OTANI T; SATO H; OTOMO T; INO T; FURUSAKA M; EBISAWA T; KAWAI T
Meeting abstracts of the Physical Society of Japan, 05 Sep. 1998

Superconducting tunnel junctions as general purpose detectors
HM Shimizu; T Ebisuzaki; T Ikeda; H Kato; K Kawai; M Matsuoka; H Miyasaka; T Oku; C Otani; H Sato; H Watanabe
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1998

28a-PS-24 Macroscopic quantum tunneling in Co-ferrite particles II
Oku T; Ogawa T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1997

23p-J-8 Development of X-ray Microcalorimeters with High Spectroscopic and Imaging Capabilities
Miyazaki Toshiyuki; Shimizu Hirohiko; Mihara Tatehiro; Oku Takayuki; Sato Hiromi; Konno Yasutaka; Ariga Youichi; Maegami Kana; Fujimoto Ryuichi; Mitsuda Kazuhisa; Kudo Hiroyuki; Nakata Taro; Shoji Shuichi
Meeting Abstracts of the Physical Society of Japan, 1997

Magnetization process in helical-spin glass reentrant Cr_0.81_Mn_0.19_Ge　　　　　　　　　　　　　　　
T. Sato; T. Taniyama; T. Oku; S. Ito; M. Takeda
KENS REPORT, 1997

1p-PSB-22 Small Angle Neutron Scattering of Ferromagnetic Fine Particles dispersed in Polymer III.
Oku T.; Ohwada M.; Sato T.; Ohta E.; Furusaka M.; IMai M.; Matsushita Y.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 15 Mar. 1996

1P-PSB-20 Magnetic property and evaluation of ferromagnetic fine particles in Langmuir Blodgett film III.
Ohwada M.; Oku T.; Sato T.; Ohta E.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 15 Mar. 1996

1p-H-15 Test Experiments for Neutron Reflectometer in Pulsed Neutron Source
Ogawa Yukio; Kiyanagi Yoshiaki; Oku Takayuki; Matsusita Yusyu; Furusaka Michihiro
Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 15 Mar. 1996

Magneto-optical effect of ferromagnetic fine particles in langmuir Blodgett film.
Ohwada M; Oku T; Sato T
Meeting Abstracts of the Physical Society of Japan, 1996

Macroscopic quantum tunneling in Co-ferrite particles
Oku T; Ogawa T; Ohwada M; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1996

28a-YB-9 Proton polarization with laser and microwave II
Shake I.; Iinuma M.; Ogawa Y.; Oku T.; Oda M.; Shimizu H.M.; Takahashi Y.; Furusaka M.; Masaike A.; Yabuzaki T.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 12 Sep. 1995

Magnetic property and evaluation of ferromagnetic fine particles in Langmuir Blodgett film II.
Ohwada M; Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1995

Small Angle Neutron Scattering of Ferromagnetic Fine Particles dispersed in Polymer II.
Oku T; Ohwada M; Sato T; Ohta E; Furusaka M
Meeting Abstracts of the Physical Society of Japan, 1995

Small Angle Neutron Scattering of Ferromagnetic Fine Particles dispersed in Polymer.
Oku T; Oowada M; Sato T; Ohta E; Furusaka M
Meeting Abstracts of the Physical Society of Japan, 1995

Magnetic property and evaluation of ferromagnetic fine particles in Langumuir Blodgett film.
Ohwada M; Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1995

Neutron depolarization analysis of itinerant electron type reentrant spin glass Cr_<1-x>Mn_xGe
Sato Tetsuya; Taniyama Tomoyasu; Oku Takayuki; Takeda Masayasu
Meeting Abstracts of the Physical Society of Japan, 1995

ITINERANT-ELECTRON-TYPE HELICAL SPIN-GLASS REENTRANT TRANSITION IN CR0.81MN0.19GE (VOL 49, PG 11864, 1994)
T SATO; T ANDO; T OKU; M FURUSAKA
PHYSICAL REVIEW B, Sep. 1994

30p-PSA-17 Magnetism of Ferromagnetic Fine Particles dispersed in Polymer and its thin film III
Oku T; Nakagawa H; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1994

30p-PSB-40 Itinerant electron type belical-spin glass transition in Cr_<1-X>Mn_Xge(0.17≤x≤0.21)
Sato T; Ando T; Oku T; Furusaka M
Meeting Abstracts of the Physical Society of Japan, 1994

28a-PS-64 Magnetic properties of Small Magnetic Particles in Langmuir-Blodgett Film III
Kuwabara T; Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1994

13p-PSA-28 Nonlinear susceptibility of a spin glass NiMn
Ando T; Oku T; Yanagihara H; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1993

13p-PSA-33 Magnetism of Ferromagnetic Fine Particles dispersed in Polymer and its thin film II.
Oku T; Nakagawa H; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1993

15a-PS-30 Ac susceptibility in itinerant electron type reentrant spin glass Cr_<0.81>Mn_<0.19>Ge
Sato T; Oku T
Meeting Abstracts of the Physical Society of Japan, 1993

31p-PSA-51 Magnetism of Ferromagnetic Fine Particles dispersed in Polymer and its thin film
Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1993

29p-PS-55 Magnetic measurement of Spin-glass AuFe thin film
Oku T; Taniyama T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1992

30a-PS-32 Magnetic Measurement of Pd Fine Particles
Taniyama T; Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1992

29p-BPS-12 Magnetic Properties of Pd Fine Particle prepared by gas evapolated method II
Taniyama T; Oku T; Sato T; Ohta E
Meeting Abstracts of the Physical Society of Japan, 1991

Recycling of used heavy water and its application to amino acid deuteration
Shibazaki Chie; Suzuki Himari*; Ikegami Takahisa*; Yoshida Katsuyoshi*; Oku Takayuki; Adachi Motoyasu*; Akutsu Kazuhiro*
2024年度量子ビームサイエンスフェスタ; 第16回MLFシンポジウム/第42回PFシンポジウム
202503

Activity of the MLF radiation safety team in FY2024
Harada Masahide; Hashimoto Norimichi*; Komine Ryota; Ishikado Motoyuki*; Oku Takayuki; Hosoya Tomonori*; Shimizu Katsumi*; Morimizu Hirotsugu*; Masuda Shiho
2024年度量子ビームサイエンスフェスタ; 第16回MLFシンポジウム/第42回PFシンポジウム
202503

2024I0010 Instrument use of BL10 NOBORU
Oikawa Kenichi; Tsuchikawa Yusuke; Harada Masahide; Sakai Kenji; Oku Takayuki; Kai Tetsuya
2024年度量子ビームサイエンスフェスタ; 第16回MLFシンポジウム/第42回PFシンポジウム
202503

Development of evaluation system for $^{3}$He spin filters at J-PARC
Kobayashi Ryuju; Oku Takayuki; 6 of others*
Mini-workshop: Polarized $^{3}$He for polarized neutron scattering technique on condensed matter physics
202502

Protein deuteration in the D-lab of J-PARC MLF
Oda Takashi; Inoue Rintaro*; Shibazaki Chie; Aoki Hiroyuki; Oku Takayuki; Sugiyama Masaaki*
日本中性子科学会第24回年会
202412

None
Kobayashi Ryuju; Oku Takayuki; 5 of others*
日本中性子科学会第24回年会
202412

Prediction of protein structure using AlphaFold2 and validation/optimization using small-angle scattering
Oda Takashi; Uchida Takumi*; Oku Takayuki; Ishino Sonoko*; Ishino Yoshizumi*
4th J-PARC Symposium (J-PARC 2024)
202410

The Superconducting magnet suite for polarized neutrons at JRR-3; Horizontal-field magnet
Tabata Chihiro; Takada Shusuke*; Shimojo Yutaka; Okawara Manabu*; Ikeda Yoichi*; Ino Takashi*; Kawamura Seiko; Oku Takayuki; Fujita Masaki*; Kaneko Koji
Workshop on Polarized Neutron Sciences and Technology
202410

Polarization analysis instruments for separation of incoherent scattering at BL15 TAIKAN and SANS-J
Hiroi Kosuke; Kumada Takayuki; Nakabe Rintaro; Motokawa Ryuhei; Oku Takayuki
Workshop on Polarized Neutron Sciences and Technology
202410

Advanced sample environment for neutron scattering at JRR-3; A Cryogen-free horizontal magnetic field system
Tabata Chihiro; Takada Shusuke*; Shimojo Yutaka; Okawara Manabu*; Ikeda Yoichi*; Ino Takashi*; Kawamura Seiko; Oku Takayuki; Fujita Masaki*; Kaneko Koji
12th International Workshop on Sample Environments at Scattering Facilities
202409

Polarization analysis method for removing incoherent scattering component at BL15 TAIKAN and SANS-J
Hiroi Kosuke; Kumada Takayuki; Nakabe Rintaro; Motokawa Ryuhei; Oku Takayuki
13th Design and Engineering of Neutron Instruments Meeting (DENIM XIII)
202409

90\% background reduction using 99.999\% aluminium windows and 30 times enhancement of polarized neutron flux using extended short-focal-length magnetic lenses in SANS-J at JRR-3
Kumada Takayuki; Motokawa Ryuhei; Nakabe Rintaro; Hiroi Kosuke; Oku Takayuki; Iwase Hiroki*
13th Design and Engineering of Neutron Instruments Meeting (DENIM XIII)
202409

Measurements of parity violation in neutron induced reactions
Snow W. M.*; Auton C.*; Endo Shunsuke; Fujioka Hiroyuki*; Ide Ikuo*; Ino Takashi*; Goto Yu*; Kawamura Shiori*; Kitaguchi Masaaki*; Kobayashi Ryuju*; Nakabe Rintaro*; Oku Takayuki; Okudaira Takuya*; Okuizumi Mao*; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Takahashi Shingo*; Yoshioka Tamaki*
2023年度量子ビームサイエンスフェスタ; 第15回MLFシンポジウム/第41回PFシンポジウム
202403

Activity of the MLF radiation safety team in FY2023
Harada Masahide; Hashimoto Norimichi*; Oku Takayuki; Aizawa Kazuya; Ishikado Motoyuki*; Hosoya Tomonori*; Shimizu Katsumi*; Ebihara Atsuhi*
2023年度量子ビームサイエンスフェスタ; 第15回MLFシンポジウム/第41回PFシンポジウム
202403

Performance of nitrogen neutron monitor at a high intense neutron instrument and its comparison with other neutron monitors
Harada Masahide; Yamaguchi Yuji; Takata Shinichi; Oikawa Kenichi; Oku Takayuki
日本原子力学会2024年春の年会
202403

On the feasibility of time-reversal invariance violation in neutron transmission
Nakabe Rintaro*; Endo Shunsuke; Fujioka Hiroyuki*; Ide Ikuo*; Ino Takashi*; Kawamura Shiori*; Kitaguchi Masaaki*; Kobayashi Ryuju*; Oku Takayuki; Okudaira Takuya*; Okuizumi Mao*; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Takahashi Shingo*; Yoshioka Tamaki*
日本物理学会2024年春季大会
202403

A Measurement of the final-state dependence of the parity violation in a compound nucleus with $^{139}$La
Goto Yu*; Ito Yuki*; Ide Ikuo*; Ino Takashi*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Okuizumi Mao*; Kameda Kento*; Kawamura Shiori*; Kitaguchi Masaaki*; Kimura Atsushi; Kobayashi Ryuju*; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Takahashi Shingo*; Nambu Taro*; Nakabe Rintaro*; Nishimura Gakutaro*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2024年春季大会
202403

Development and application of $^3$He neutron spin filters at J-PARC MLF
Oku Takayuki
24th Meeting of the International Collaboration of Advanced Neutron Sources (ICANS XXIV)
202311

Development of sample radio-activity evaluation code at Materials and Life Science Facility in J-PARC
Harada Masahide; Yamaguchi Yuji; Hashimoto Norimichi*; Ito Taku*; Tajima Takahiro*; Oku Takayuki; Haga Katsuhiro; Ikeda Hiroshi*; Tamura Satoshi*
日本放射線安全管理学会第22回学術大会
202311

Development and application of $^3$He neutron spin filters at J-PARC MLF
Oku Takayuki
24th Meeting of the International Collaboration of Advanced Neutron Sources (ICANS XXIV)
202310

SANS analysis using segmentally deuterated protein
Oda Takashi; Inoue Rintaro*; Morishima Ken*; Aizawa Naoki*; Oi Rika*; Ishino Yoshizumi*; Oku Takayuki; Sato Mamoru*; Sugiyama Masaaki*
日本中性子科学会第23回年会
202309

Measurement of intensity and spatial distribution of thermal neutrons with the large-area gold-foil activation method at the Materials and Life science Facility in J-PARC
Harada Masahide; Yamaguchi Yuji; Kawamura Seiko; Kofu Maiko; Nirei Masami; Haga Katsuhiro; Oku Takayuki; Matsuura Masato*; Kusaka Katsuhiro*; Nakayama Haruki*
日本中性子科学会第23回年会
202309

Nano-ice crystals in rapidly cooled sugar solutions observed by spin-contrast-variation small-angle neutron scattering
Kumada Takayuki; Nakagawa Hiroshi; Miura Daisuke*; Sekine Yurina; Motokawa Ryuhei; Hiroi Kosuke; Inamura Yasuhiro; Oku Takayuki; Oishi Kazuki*; Morikawa Toshiaki*; Kawamura Yukihiko*; Kawai Kiyoshi*
日本物理学会第78回年次大会(2023年)
202309

Activity of the MLF radiation safety team in FY2022
Harada Masahide; Hashimoto Norimichi*; Oku Takayuki; Aizawa Kazuya; Ishikado Motoyuki*; Hosoya Tomonori*; Shimizu Katsumi*; Ebihara Atsuhi*
2022年度量子ビームサイエンスフェスタ; 第14回MLFシンポジウム/第40回PFシンポジウム
202303

Measurement of spin-angular correlation terms in neutron induced reactions for search of time-reversal violation
Endo Shunsuke; Fujioka Hiroyuki*; Ide Ikuo*; Iinuma Masataka*; Ito Yuki*; Kameda Kento*; Kawamura Shiori*; Kimura Atsushi; Kitaguchi Masaaki*; Oku Takayuki; Okudaira Takuya*; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Yoshikawa Hiromoto*; Yoshioka Tamaki*
14th International Workshop on Fundamental Physics Using Atoms (FPUA 2022)
202211

Current status for the search of time-reversal symmetry violation using compound nuclear reactions
Endo Shunsuke; Kimura Atsushi; Shimizu Hirohiko*; Fujioka Hiroyuki*; Ide Ikuo*; Sakai Kenji; Kameda Kento*; Kitaguchi Masaaki*; Iinuma Masataka*; Kawamura Shiori*; Takada Shusuke*; Oku Takayuki; Okudaira Takuya*; Yoshioka Tamaki*; Shima Tatsushi*; Yoshikawa Hiromoto*; Ito Yuki*
6th Workshop on the Physics of fundamental Symmetries and Interactions (PSI 2022)
202210

Activity of the MLF radiation safety team in FY2021
Harada Masahide; Kawakami Kazuhiro*; Oku Takayuki; Aizawa Kazuya; Ishikado Motoyuki*; Hashimoto Norimichi*; Hosoya Tomonori*
2021年度量子ビームサイエンスフェスタ; 第13回MLFシンポジウム/第39回PFシンポジウム
202203

Current status of NOBORU at MLF BL10
Oikawa Kenichi; Harada Masahide; Oku Takayuki; Sakai Kenji; Oi Motoki; Kai Tetsuya; Shinohara Takenao
2021年度量子ビームサイエンスフェスタ; 第13回MLFシンポジウム/第39回PFシンポジウム
202203

Prompt $\gamma$-ray measurement from the neutron capture reaction of Pd isotopes in the eV energy range
Yoshikawa Hiromoto*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Nakai Asuka*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*
日本物理学会第77回年次大会(2022年)
202203

Plan for the T-violation search using compound nuclei and measurement of the spin-dependent neutron absorption cross section with polarized nuclei
Okudaira Takuya*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会第77回年次大会(2022年)
202203

The Angular dependence of the cross section of $^{115}$In(n,$\gamma$) reaction toward a search for time-reversal violation using an indium target
Takada Shusuke*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Nakai Asuka*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会第77回年次大会(2022年)
202203

Measurement of $\sigma_n\cdot\hat{k}_\gamma$ angular dependent term of $^{139}$La(n,$\gamma$)$^{140}$La reaction for polarized neutrons
Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hasegawa Takuro*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会第77回年次大会(2022年)
202203

Development of polarimeter for circular polarization measurement of gamma-rays emitted from neutron capture reactions
Endo Shunsuke; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Oku Takayuki; Okudaira Takuya*; Omer M.; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shizuma Toshiyuki*; Shima Tatsushi*; Shimizu Hirohiko*; Sugita Kento*; Zen H.*; Taira Yoshitaka*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会第77回年次大会(2022年)
202203

Polarization analysis technique for removing incoherent scattering component at MLF BL15 TAIKAN and SANS-J
Hiroi Kosuke; Motokawa Ryuhei; Oba Yojiro; Kumada Takayuki; Okudaira Takuya*; Oku Takayuki; Suzuki Junichi*
第21回日本中性子科学会年会(JSNS 2021)
202112

Current status of the common sample environment equipment at the MLF in J-PARC
Watanabe Masao; Oku Takayuki; Kawamura Seiko; Takata Shinichi; Su Y. H.; Takahashi Ryuta*; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Ishikado Motoyuki*; Sakaguchi Yoshifumi*; Ouchi Keiichi*; Arima Hiroshi*; Morikawa Toshiaki*; Zhang S.*; Yamauchi Sara*
第21回日本中性子科学会年会(JSNS 2021)
202112

Present status of time-reversal violation search experiment with compound nuclei
Kitaguchi Masaaki*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Measurement of angular dependent term of $^{139}$La(n,$\gamma$) reaction for polarized neutrons
Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Study of epithermal neutron optics for time-reversal violation search experiment with compound nuclei
Fujiie Takuhiro*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Nakai Asuka*; Hirota Katsuya*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Evaluation of resonance parameters of compound nuclear states in the n+$^{131}$Xe reaction
Kameda Kento*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Yoshioka Tamaki*; Yoshikawa Hiromoto*; Snow W. M.*; Komives A.*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Angular distribution of $\gamma$-rays from the neutron capture reaction of Pd isotopes in the eV energy range
Yoshikawa Hiromoto*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Nakai Asuka*; Hirota Katsuya*; Fujiie Takuhiro*; Yoshioka Tamaki*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Measurement of the $\gamma$-ray angular distribution in $^{131}$Xe(n,$\gamma$)$^{132}$Xe* reactions
Okudaira Takuya*; Abe Ryota*; Ishizaki Kohei*; Ito Yuki*; Endo Shunsuke; Oku Takayuki; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Hirota Katsuya*; Fujiie Takuhiro*; Fujioka Hiroyuki*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Measurement of polarization dependence for capture cross-section of $^{117}$Sn($\overrightarrow{n}$,$\gamma$) reaction
Endo Shunsuke; Abe Ryota*; Ishizaki Kohei*; Oku Takayuki; Okudaira Takuya*; Kameda Kento*; Kitaguchi Masaaki*; Kimura Atsushi; Sakai Kenji; Shima Tatsushi*; Shimizu Hirohiko*; Takada Shusuke*; Nakai Asuka*; Hirota Katsuya*; Fujiie Takuhiro*; Yoshioka Tamaki*; Yoshikawa Hiromoto*
日本物理学会2021年秋季大会(素粒子,核物理,宇宙線・宇宙物理)
202109

Activity of the MLF radiation safety team in FY2020
Harada Masahide; Kawakami Kazuhiro*; Oku Takayuki; Aizawa Kazuya; Ishikado Motoyuki*; Hashimoto Norimichi*; Hosoya Tomonori*; Ichimura Katsuhiro*
2020年度量子ビームサイエンスフェスタ; 第12回MLFシンポジウム/第38回PFシンポジウム
202103

Magnetic lens system for focusing-geometry small-angle neutron scattering at MLF BL15 TAIKAN
Hiroi Kosuke; Takata Shinichi; Oishi Kazuki*; Kawamura Yukihiko*; Iwase Hiroki*; Shinohara Takenao; Oku Takayuki; Suzuki Junichi*
3rd J-PARC Symposium (J-PARC 2019)
201909

The Development of the $^{3}$He spin filter for the time reversal violation search using compound nuclei at JAEA
Okudaira Takuya; Oku Takayuki; Sakai Kenji; Ino Takashi*; Hayashida Hirotoshi*; Hiroi Kosuke; Shinohara Takenao; Kakurai Kazuhisa*; Aizawa Kazuya; Shimizu Hirohiko*; Kitaguchi Masaaki*; Yamamoto Tomoki*; Sato Takumi*
日本物理学会第74回年次大会
201903

Development of the $^{3}$He neutron spin filter at JAEA
Okudaira Takuya; Oku Takayuki; Sakai Kenji; Ino Takashi*; Hayashida Hirotoshi*; Hiroi Kosuke; Shinohara Takenao; Kakurai Kazuhisa*; Aizawa Kazuya
2018年度量子ビームサイエンスフェスタ; 第10回MLFシンポジウム/第36回PFシンポジウム
201903

Study of neutron-nuclear spin correlation term with a polarized xenon target
Sakai Kenji; Oku Takayuki; Okudaira Takuya; Kai Tetsuya; Harada Masahide; Hiroi Kosuke; Hayashida Hirotoshi*; Shimizu Hirohiko*; Yamamoto Tomoki*; Ino Takashi*; Hirota Katsuya*
2018年度量子ビームサイエンスフェスタ; 第10回MLFシンポジウム/第36回PFシンポジウム
201903

Current status of the development of the $^{3}$He spin filter in JAEA
Okudaira Takuya; Oku Takayuki; Sakai Kenji; Ino Takashi*; Hayashida Hirotoshi*; Hiroi Kosuke; Shinohara Takenao; Kakurai Kazuhisa*; Aizawa Kazuya
日本中性子科学会第18回年会(JSNS 2018)
201812

Current status of NOBORU at MLF BL10
Oikawa Kenichi; Harada Masahide; Oi Motoki; Sakai Kenji; Oku Takayuki; Kai Tetsuya; Shinohara Takenao
日本中性子科学会第18回年会(JSNS 2018)
201812

Sample environment at J-PARC MLF
Oku Takayuki; Watanabe Masao; Sakaguchi Yoshifumi*; Kawamura Seiko; Takahashi Ryuta*; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Ishikado Motoyuki*; Ouchi Keiichi*; Arima Hiroshi*; Takata Shinichi; Zhang S.*; Su Y. H.; Sakai Kenji; Okudaira Takuya; Ino Takashi*; Aizawa Kazuya
10th International Workshop on Sample Environment at Scattering Facilities (ISSE 2018)
201809

Sample environment commonly used at the chopper spectrometers in J-PARC MLF
Kawamura Seiko; Watanabe Masao; Takahashi Ryuta*; Munakata Koji*; Takata Shinichi; Sakaguchi Yoshifumi*; Ishikado Motoyuki*; Ouchi Keiichi*; Arima Hiroshi*; Hattori Takanori; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Oku Takayuki
15th International Conference on Applications of Quasielastic Neutron Scattering (QENS 2018) \& 8th Workshop on Inelastic Neutron Spectrometers (WINS 2018)
201807

A Neutron depolarization measurement of a single crystal Fe by using a $^3$He neutron spin filter and magnetic super-mirrors
Oku Takayuki; Kira Hiroshi*; Hayashida Hirotoshi*; Sakai Kenji; Hiroi Kosuke; Okudaira Takuya; Ino Takashi*; Shinohara Takenao; Suzuki Junichi*; Kakurai Kazuhisa*; Aizawa Kazuya
Polarised Neutrons for Condensed-Matter Investigations (PNCMI 2018)
201807

Current status and plan of the common sample environment equipment
Watanabe Masao; Oku Takayuki; Kawamura Seiko; Takata Shinichi; Takahashi Ryuta*; Sakai Kenji; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Munakata Koji*; Ishikado Motoyuki*; Sakaguchi Yoshifumi*; Ouchi Keiichi*; Kira Hiroshi*; Aizawa Kazuya
2017年度量子ビームサイエンスフェスタ; 第9回MLFシンポジウム/第35回PFシンポジウム
201803

Study of neutron-nuclear spin correlation term with a polarized xenon target
Sakai Kenji; Oku Takayuki; Harada Masahide; Kai Tetsuya; Hiroi Kosuke; Hayashida Hirotoshi*; Kira Hiroshi*; Shimizu Hirohiko*; Hirota Katsuya*; Okudaira Takuya*; Yamamoto Tomoki*; Ino Takashi*
2017年度量子ビームサイエンスフェスタ; 第9回MLFシンポジウム/第35回PFシンポジウム
201803

Current status and plan of the beamline common sample environment at J-PARC MLF
Oku Takayuki; Watanabe Masao; Kawamura Seiko; Aso Tomokazu; Takahashi Ryuta*; Sakai Kenji; Yamauchi Yasuhiro*; Nakamura Masatoshi*; Munakata Koji*; Ishikado Motoyuki*; Sakaguchi Yoshifumi*; Ouchi Keiichi*; Kira Hiroshi*; Aizawa Kazuya
日本中性子科学会第17回年会(JSNS 2017)
201712

Development of laser optics for a spin-exchange optical pumping $^3$He neutron spin filter at J-PARC
Oku Takayuki; Kira Hiroshi*; Hayashida Hirotoshi*; Sakai Kenji; Ino Takashi*; Hiroi Kosuke; Shinohara Takenao; Kakurai Kazuhisa*; Suzuki Junichi*; Aizawa Kazuya
International Conference on Neutron Optics (NOP 2017)
201707

Current status of a $^{3}$He spin filter development
Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Watanabe Masao; Shinohara Takenao; Aizawa Kazuya; Kakurai Kazuhisa*; Kira Hiroshi*; Hayashida Hirotoshi*; Kiriyama Koji*; Suzuki Junichi*; Ino Takashi*; Okawara Manabu*; Noda Yohei*; Oyama Kenji*; Okudaira Takuya*; Okada Anju*; Kitaguchi Masaaki*; Shimizu Hirohiko*; Lee W. T.*; Tong T. X.*
2016年度量子ビームサイエンスフェスタ; 第8回MLFシンポジウム/第34回PFシンポジウム
201703

Current status and future plan of a $^{3}$He spin filter development
Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Watanabe Masao; Shinohara Takenao; Aizawa Kazuya; Kakurai Kazuhisa; Kira Hiroshi*; Hayashida Hirotoshi*; Kiriyama Koji*; Suzuki Junichi*; Ino Takashi*; Okawara Manabu*; Noda Yohei*; Oyama Kenji*; Okudaira Takuya*; Okada Anju*; Kitaguchi Masaaki*; Shimizu Hirohiko*; Lee W. T.*; Xin T.*
2015年度量子ビームサイエンスフェスタ; 第7回MLFシンポジウム/第33回PFシンポジウム
201603

Development status and future plan of a $^{3}$He neutron spin filter
Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Aizawa Kazuya; Kakurai Kazuhisa; Kira Hiroshi*; Hayashida Hirotoshi*; Kiriyama Koji*; Suzuki Junichi*; Ino Takashi*; Okawara Manabu*; Noda Yohei*; Oyama Kenji*
日本中性子科学会第15回年会(JSNS 2015)
201512

Development status and future plan of a $^3$He neutron spin filter
Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Aizawa Kazuya; Arai Masatoshi; Kakurai Kazuhisa; Hayashida Hirotoshi*; Kira Hiroshi*; Suzuki Junichi*; Ino Takashi*; Okawara Manabu*; Oyama Kenji*
日本中性子科学会第14回年会(JSNS 2014)
201412

Development of a $^{3}$He nuclear spin flip system for the in-situ SEOP $^{3}$He filter
Hayashida Hirotoshi*; Kira Hiroshi*; Suzuki Junichi*; Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Kakurai Kazuhisa; Aizawa Kazuya; Arai Masatoshi; Ino Takashi*; Oyama Kenji*; Okawara Manabu*
日本中性子科学会第14回年会(JSNS 2014)
201412

Current status of sample environment at J-PARC MLF
Aso Tomokazu; Yamauchi Yasuhiro; Sakaguchi Yoshifumi*; Munakata Koji*; Ishikado Motoyuki*; Kawamura Seiko; Yokoo Tetsuya*; Watanabe Masao; Takata Shinichi; Hattori Takanori; Kambara Wataru; Oku Takayuki; Kawakita Yukinobu; Aizawa Kazuya
8th International Workshop on Sample Environment at Neutron Scattering Facilities
201410

Current status of the small and wide angle neutron scattering instrument TAIKAN at J-PARC
Takata Shinichi; Suzuki Junichi*; Oishi Kazuki*; Iwase Hiroki*; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi*; Tominaga Taiki*; Hosoya Tomonori; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*
21st International Collaboration on Advanced Neutron Source (ICANS-21)
201409

Development of compact laser optics for an in-situ spin-exchange optical pumping $^3$He neutron spin filter
Oku Takayuki; Hayashida Hirotoshi*; Kira Hiroshi*; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Sakaguchi Yoshifumi*; Ino Takashi*; Oyama Kenji*; Chang L.-J.*; Nakamura Mitsutaka; Suzuki Junichi*; Shimizu Hirohiko*; Aizawa Kazuya; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa
21st International Collaboration on Advanced Neutron Source (ICANS-21)
201409

Magnetic shield design of in-situ SEOP polarized $^{3}$He neutron spin filter for high magnetic field sample environment accessories at J-PARC
Kira Hiroshi*; Hayashida Hirotoshi*; Oku Takayuki; Sakai Kenji; Hiroi Kosuke; Ino Takashi*; Oyama Kenji*; Okawara Manabu*; Kakurai Kazuhisa; Suzuki Junichi*; Arai Masatoshi
21st International Collaboration on Advanced Neutron Source (ICANS-21)
201409

Present status of sample environment at J-PARC MLF
Aso Tomokazu; Yamauchi Yasuhiro; Sakaguchi Yoshifumi*; Munakata Koji*; Ishikado Motoyuki*; Kawamura Seiko; Yokoo Tetsuya*; Watanabe Masao; Takata Shinichi; Hattori Takanori; Kambara Wataru; Oku Takayuki; Kawakita Yukinobu; Aizawa Kazuya
21st International Collaboration on Advanced Neutron Source (ICANS-21)
201409

Current status and perspectives in the development of an in-situ spin-exchange optical pumping $^3$He neutron spin filter at J-PARC
Oku Takayuki; Kira Hiroshi*; Hayashida Hirotoshi*; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Sakaguchi Yoshifumi*; Ino Takashi*; Oyama Kenji*; Nakamura Mitsutaka; Suzuki Junichi*; Aizawa Kazuya; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa
10th International Conference on Polarized Neutrons for Condensed Matter Investigations (PNCMI 2014)
201409

Development of compact laser optics for an in-situ spin-exchange optical pumping $^3$He neutron spin filter
Oku Takayuki; Hayashida Hirotoshi*; Kira Hiroshi*; Sakai Kenji; Hiroi Kosuke; Shinohara Takenao; Sakaguchi Yoshifumi*; Ino Takashi*; Oyama Kenji*; Chang L.-J.*; Nakamura Mitsutaka; Suzuki Junichi*; Shimizu Hirohiko*; Aizawa Kazuya; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa
2nd International Symposium on Science at J-PARC (J-PARC 2014)
201407

Developments and performance analysis of the small and wide angle neutron scattering instrument TAIKAN
Takata Shinichi; Suzuki Junichi*; Oishi Kazuki*; Iwase Hiroki*; Tominaga Taiki; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi*; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本中性子科学会第13回年会
201312

Development status of NMR monitor for polarized $^{3}$He spin filter at J-PARC/MLF
Sakai Kenji; Oku Takayuki; Hayashida Hirotoshi; Kira Hiroshi*; Okawara Manabu*; Shinohara Takenao; Oikawa Kenichi; Harada Masahide; Kakurai Kazuhisa; Aizawa Kazuya; Arai Masatoshi; Sakaguchi Yoshifumi*; Suzuki Junichi*; Oyama Kenji*; Ino Takashi*
日本中性子科学会第13回年会
201312

Development and application of an in-situ SEOP $^{3}$He neutron spin filter
Oku Takayuki; Hayashida Hirotoshi; Sakai Kenji; Shinohara Takenao; Nakamura Mitsutaka; Aizawa Kazuya; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Kira Hiroshi*; Sakaguchi Yoshifumi*; Suzuki Junichi*; Ino Takashi*; Hiraka Haruhiro*; Shimizu Hirohiko*; Okawara Manabu*; Oyama Kenji*
日本中性子科学会第13回年会
201312

Development of an in-situ SEOP $^3$He spin filter
Hayashida Hirotoshi; Oku Takayuki; Kira Hiroshi*; Sakai Kenji; Ino Takashi*; Shinohara Takenao; Oyama Kenji*; Takata Shinichi; Oishi Kazuki*; Takeda Masayasu; Sakaguchi Yoshifumi*; Oikawa Kenichi; Suzuki Junichi*; Kakurai Kazuhisa; Aizawa Kazuya; Arai Masatoshi
日本中性子科学会第13回年会
201312

SANS study on double-network polymers
Tominaga Taiki; Takata Shinichi; Suzuki Junichi*; Shinohara Takenao; Oku Takayuki; Oishi Kazuki*; Nakatani Takeshi; Inamura Yasuhiro; Iwase Hiroki*; Ito Takayoshi*; Kira Hiroshi*; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi
12th Asia Pacific Physics Conference (APPC-12)
201307

Neutron beam fundamentals development in Japan; Utilization of steady state and pulsed neutrons
Kakurai Kazuhisa; Oku Takayuki; Hayashida Hirotoshi; Sakai Kenji; Shinohara Takenao; Nakamura Mitsutaka; Wakimoto Shuichi; Yamazaki Dai; Sakasai Kaoru; Soyama Kazuhiko; Arai Masatoshi; Endo Yasuo; Kira Hiroshi*; Sakaguchi Yoshifumi*; Suzuki Junichi*; Kamiyama Takashi*; Furusaka Michihiro*; Kiyanagi Yoshiaki; Oyama Kenji*; Hiraka Haruhiro*; Arimoto Yasushi*; Ino Takashi*; Yamada Kazuyoshi*; Takahashi Hiroyuki*; Parker J.*; Tanimori Toru*; Chang L.-J.*; Shimizu Hirohiko*
International Conference on Neutron Scattering 2013 (ICNS 2013)
201307

Development and application of an in-situ SEOP $^{3}$He neutron spin filter at J-PARC/MLF
Oku Takayuki; Kira Hiroshi*; Hayashida Hirotoshi; Sakai Kenji; Shinohara Takenao; Sakaguchi Yoshifumi*; Ino Takashi*; Arimoto Yasushi*; Oyama Kenji*; Hiraka Haruhiro*; Chang L.-J.*; Nakamura Mitsutaka; Suzuki Junichi*; Shimizu Hirohiko*; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa
International Workshop on Neutron Optics and Detectors (NOP\&D 2013)
201307

Development of portable polarized $^3$He spin flipper at J-PARC/MLF
Sakai Kenji; Oku Takayuki; Shinohara Takenao; Hayashida Hirotoshi; Oikawa Kenichi; Harada Masahide; Kakurai Kazuhisa; Kira Hiroshi*; Sakaguchi Yoshifumi*; Suzuki Junichi*; Ino Takashi*; Oyama Kenji*; Hiraka Haruhiro*
日本中性子科学会第12回年会
201212

Development of a compact laser optics system for an in-situ SEOP $^{3}$He neutron spin filter
Oku Takayuki; Hayashida Hirotoshi; Sakai Kenji; Shinohara Takenao; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Kira Hiroshi*; Sakaguchi Yoshifumi*; Suzuki Junichi*; Arimoto Yasushi*; Ino Takashi*; Oyama Kenji*; Hiraka Haruhiro*; Shimizu Hirohiko*
日本中性子科学会第12回年会
201212

Polarised neutron spectrometer, POLANO, at J-PARC attempts at understanding novel magnetism
Oyama Kenji*; Yokoo Tetsuya*; Ito Shinichi*; Suzuki Junichi*; Iwasa Kazuaki*; Sato Taku*; Kira Hiroshi*; Sakaguchi Yoshifumi*; Ino Takashi*; Oku Takayuki; Tomiyasu Keisuke*; Matsuura Masato*; Hiraka Haruhiro*; Fujita Masaki*; Kimura Hiroyuki*; Sato Takumi*; Suzuki Junichi*; Shimizu Hirohiko*; Arima Takahisa*; Takeda Masayasu; Kaneko Koji; Hino Masahiro*; Muto Suguru*; Nojiri Hiroyuki*; Lee C.-H.*; Park J.-G.*; Choi S.*
Materials Science Week 2012 (MSW 2012)
201211

Wide-q measurement of protein in solution using the small and wide angle neutron scattering instrument TAIKAN of J-PARC
Takata Shinichi; Suzuki Junichi*; Shinohara Takenao; Oku Takayuki; Tominaga Taiki; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi*; Iwase Hiroki*; Oishi Kazuki*
15th International Small-Angle Scattering Conference (SAS 2012)
201211

Time-shearing measurements of soft matter using J-PARC/TAIKAN (BL15)
Tominaga Taiki; Takata Shinichi; Suzuki Junichi*; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Iwase Hiroki*; Oishi Kazuki*; Ito Takayoshi*; Kira Hiroshi*; Sugiyama Masaaki*
15th International Small-Angle Scattering Conference (SAS 2012)
201211

Development of polarized $^3$He spin flipper for neutron polarization experiment
Sakai Kenji; Oku Takayuki; Shinohara Takenao; Hayashida Hirotoshi; Oikawa Kenichi; Harada Masahide; Kira Hiroshi*; Sakaguchi Yoshifumi*; Suzuki Junichi*; Ino Takashi*; Oyama Kenji*; Hiraka Haruhiro*; Kakurai Kazuhisa
第4回J-PARC/MLFシンポジウム・茨城県ビームライン平成23年度成果報告
201210

Quantitative imaging of magnetic fields inside Fe based soft magnetic sheet using polarized pulsed neutrons
Shinohara Takenao; Sakai Kenji; Kai Tetsuya; Hayashida Hirotoshi; Sato Hirotaka*; Negishi Tomoya*; Harada Masahide; Oi Motoki; Oikawa Kenichi; Oku Takayuki; Aizawa Kazuya; Arai Masatoshi; Kiyanagi Yoshiaki*
International Union of Materials Research Societies; International Conference on Electronic Materials 2012 (IUMRS-ICEM 2012)
201209

Development of magnetic field imaging technique using polarized pulsed neutrons, 3
Shinohara Takenao; Negishi Tomoya*; Hayashida Hirotoshi; Sakai Kenji; Kai Tetsuya; Oi Motoki; Sato Hirotaka*; Harada Masahide; Oikawa Kenichi; Maekawa Fujio; Oku Takayuki; Aizawa Kazuya; Arai Masatoshi; Kiyanagi Yoshiaki*
日本物理学会2012年秋季大会(物性)
201209

Neutron beam fundamentals development and novel and extreme conditions at JRR-3 and J-PARC/MLF
Kakurai Kazuhisa; Oku Takayuki; Osakabe Toyotaka; Hattori Takanori; Noda Yohei
Advanced Seminar on Perspectives for Neutron Science in Novel \& Extreme conditions
201205

Neutron studies on soft matter; Development of smaller-angle neutron scattering instrument TAIKAN of J-PARC
Tominaga Taiki; Suzuki Junichi*; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Iwase Hiroki*; Oishi Kazuki*; Kira Hiroshi*; Sugiyama Masaaki*
East Asia Young Scientists GEL Symposium 2012
201201

Software development of the smaller-angle neutron scattering instrument TAIKAN of J-PARC
Takata Shinichi; Suzuki Junichi*; Shinohara Takenao; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi*; Oku Takayuki; Oishi Kazuki*; Iwase Hiroki*; Tominaga Taiki; Aizawa Kazuya; Otomo Toshiya*; Arai Masatoshi; Sugiyama Masaaki*
1st Asia-Oceania Conference on Neutron Scattering (1st AOCNS)
201111

Spin selective neutron transportation and shaping by using multiplet magnetic lenses
Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Kira Hiroshi*; Takata Shinichi; Arai Masatoshi; Hirota Katsuya*; Iwashita Yoshihisa*; Shimizu Hirohiko*
1st Asia-Oceania Conference on Neutron Scattering (1st AOCNS)
201111

Toughness origin of double network hydrogels; Neutron studies for soft matter by TAIKAN
Tominaga Taiki; Suzuki Junichi*; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Iwase Hiroki*; Oishi Kazuki*; Ito Takayoshi*; Kira Hiroshi*; Sugiyama Masaaki*
4th AONSA Neutron School 2011
201111

Neutron studies on soft matter by TAIKAN; Tough hydrogels "Double network gels"
Tominaga Taiki; Suzuki Junichi*; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Iwase Hiroki*; Oishi Kazuki*; Ito Takayoshi*; Kira Hiroshi*; Sugiyama Masaaki*
1st Asia-Oceania Conference on Neutron Scattering (1st AOCNS)
201111

Development of the time-of-fright smaller-angle neutron scattering instrument TAIKAN, and Soft matter
Tominaga Taiki; Suzuki Junichi*; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Nakatani Takeshi; Inamura Yasuhiro; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Iwase Hiroki*; Oishi Kazuki*; Ito Takayoshi*; Kira Hiroshi; Sugiyama Masaaki*
第1回ソフトマター研究会
201108

Development of the smaller-angle neutron scattering instrument TAIKAN of J-PARC
Suzuki Junichi; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Kira Hiroshi; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
第20回日本MRS学術シンポジウム
201012

Polarization analysis using $^{3}$He spin filters on small-angle neutron scattering spectrometer SANS-J-II
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Sakai Kenji; Nakamura Mitsutaka; Aizawa Kazuya; Arai Masatoshi; Noda Yohei; Koizumi Satoshi; Takeda Masayasu; Endo Yasuo; Chang L.-J.; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Tsutsumi Kenji*; Yamada Kazuyoshi*; Kakurai Kazuhisa
日本中性子科学会第10回年会
201012

Present status of the development of polarized $^{3}$He neutron spin filter cells
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Sakai Kenji; Nakamura Mitsutaka; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Takeda Masayasu; Endo Yasuo; Chang L.-J.; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Tsutsumi Kenji*; Yamada Kazuyoshi*; Ohara Koji*; Kakurai Kazuhisa
日本中性子科学会第10回年会
201012

Development of the smaller-angle neutron scattering instrument (TAIKAN) in J-PARC and its application to structural analysis of iron steels
Suzuki Junichi; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Kira Hiroshi; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本鉄鋼協会第160回秋季講演大会
201009

Development of the intense smaller-angle neutron scattering instrument TAIKAN in J-PARC, 3
Suzuki Junichi; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Kira Hiroshi; Nakatani Takeshi; Inamura Yasuhiro; Ito Takayoshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本物理学会2010年秋季大会(物性)
201009

Development of glass cells for polarized $^{3}$He neutron spin filters, 2
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Sakai Kenji; Nakamura Mitsutaka; Suzuya Kentaro; Arai Masatoshi; Takeda Masayasu; Endo Yasuo; Kakurai Kazuhisa; Chang L.-J.; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*; Ohara Koji*
日本物理学会2010年秋季大会(物性)
201009

Polarized small-angle neutron scattering using polarized $^{3}$He neutron spin filters on small-angle neutron scattering spectrometer SANS-J-II
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Sakai Kenji; Nakamura Mitsutaka; Arai Masatoshi; Noda Yohei; Koizumi Satoshi; Takeda Masayasu; Endo Yasuo; Kakurai Kazuhisa; Chang L.-J.; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Tsutsumi Kenji*; Yamada Kazuyoshi*
日本物理学会2010年秋季大会(物性)
201009

Current status and perspective of neutron polarizing device development and application in neutron scattering experiments in Japan
Oku Takayuki; Kira Hiroshi; Sakaguchi Yoshifumi; Sakai Kenji; Suzuki Junichi; Nakamura Mitsutaka; Shinohara Takenao; Koizumi Satoshi; Takata Shinichi; Aizawa Kazuya; Kamiyama Takashi; Endo Yasuo; Takeda Masayasu; Arai Masatoshi; Kakurai Kazuhisa; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Tsutsumi Kenji*; Hiraka Haruhiro*; Oyama Kenji*; Yamada Kazuyoshi*; Chang L.-J.
JCNS Workshop; Modern Trends in Production and Applications of Polarized $^{3}$He
201007

Development of a quadrupole magnet to polarize cold neutrons for SANS experiments
Oku Takayuki; Suzuki Junichi; Kira Hiroshi; Shinohara Takenao; Takata Shinichi; Arai Masatoshi; Hirota Katsuya*; Iwashita Yoshihisa*; Shimizu Hirohiko*
8th International Workshop on Polarised Neutrons in Condensed Matter Investigations (PNCMI 2010)
201007

Japan-Taiwan joint development project for polarized $^{3}$He
Chang L.-J.; Oku Takayuki; Kira Hiroshi; Sakaguchi Yoshifumi; Sakai Kenji; Shinohara Takenao; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Takeda Masayasu; Aizawa Kazuya; Kamiyama Takashi; Koizumi Satoshi; Endo Yasuo; Kakurai Kazuhisa; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Oyama Kenji*; Tsutsumi Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*
JCNS Workshop Modern Trends in Production and Applications of Polarized $^{3}$He
201007

Development of polarization measurement devices for polarized $^{3}$He gas neutron spin filters
Kira Hiroshi; Sakaguchi Yoshifumi; Oku Takayuki; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Sato Koichi*; Kamiyama Takashi*; Kiyanagi Yoshiaki*; Tsutsumi Kenji*; Oyama Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*
日本物理学会第65回年次大会
201003

Application of polarization neutron by $^{3}$He filter technique for condensed-matter physics; Development of spin control devices
Tsutsumi Kenji*; Oyama Kenji*; Hiraka Haruhiro*; Yamaguchi Yasuo*; Ino Takashi*; Oku Takayuki; Sakaguchi Yoshifumi; Kira Hiroshi; Arimoto Yasushi*; Takeda Masayasu; Suzuki Junichi; Iwasa Kazuaki*; Yamada Kazuyoshi*; Kakurai Kazuhisa
日本物理学会第65回年次大会
201003

Development of glass cells for polarized $^{3}$He neutron spin filters
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Takeda Masayasu; Wakimoto Shuichi; Yamazaki Dai; Koizumi Satoshi; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Tsutsumi Kenji*; Yamada Kazuyoshi*
日本物理学会第65回年次大会
201003

Quantitative evaluation of magnetic cluster size in perpendicular magnetic recording media
Hagiya Hiroyuki; Oku Takayuki; Kira Hiroshi; Shinohara Takenao; Suzuki Junichi; Kakurai Kazuhisa; Yokoyama Makoto*; Nishihara Yoshikazu*; Mamiya Hiroaki*; Oba Yojiro*; Onuma Masato*; Awano Hiroyuki*; Koda Tetsunori*; Katayama Toshikazu*
日本物理学会第65回年次大会
201003

A SANS study on perpendicular magnetic recording hard disk media
Hagiya Hiroyuki; Oku Takayuki; Kira Hiroshi; Shinohara Takenao; Suzuki Junichi; Takeda Masayasu; Kakurai Kazuhisa; Yokoyama Makoto*; Nishihara Yoshikazu*; Oba Yojiro*; Mamiya Hiroaki*; Onuma Masato*; Awano Hiroyuki*; Koda Tetsunori*; Katayama Toshikazu*
日本中性子科学会第9回年会
200912

Development of $^{3}$He polarized neutron spin filters and its present status, 2
Kira Hiroshi; Sakaguchi Yoshifumi; Oku Takayuki; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Sato Hirotaka*; Sato Koichi*; Kamiyama Takashi*; Kiyanagi Yoshiaki*; Tsutsumi Kenji*; Oyama Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*
日本中性子科学会第9回年会
200912

Development of an intense smaller-angle neutron scattering instrument TAIKAN in J-PARC, 2
Suzuki Junichi; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本物理学会2009年秋季大会(物性)
200909

Development of polarized $^{3}$He neutron spin filters, 2
Kira Hiroshi; Sakaguchi Yoshifumi; Oku Takayuki; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*
日本物理学会2009年秋季大会(物性)
200909

Development of polarized ${}^{3}$He neutron spin filters, 3
Sakaguchi Yoshifumi; Kira Hiroshi; Oku Takayuki; Suzuki Junichi; Nakamura Mitsutaka; Arai Masatoshi; Endo Yasuo; Kakurai Kazuhisa; Takeda Masayasu; Wakimoto Shuichi; Yamazaki Dai; Koizumi Satoshi; Arimoto Yasushi*; Ino Takashi*; Shimizu Hirohiko*; Kamiyama Takashi; Oyama Kenji*; Hiraka Haruhiro*; Yamada Kazuyoshi*
日本物理学会2009年秋季大会(物性)
200909

Development of a multiplet magnetic lens system for pulsed neutron beam focusing
Oku Takayuki; Suzuki Junichi; Kira Hiroshi; Shinohara Takenao; Takata Shinichi; Arai Masatoshi; Shimizu Hirohiko*
4th Workshop on Inelastic Neutron Spectrometers 2009 (WINS 2009)
200905

Development of a neutron polarization device using magnetic super mirrors arranged in crossed geometry
Shinohara Takenao; Oku Takayuki; Suzuki Junichi; Takata Shinichi; Kira Hiroshi; Aizawa Kazuya; Arai Masatoshi
日本物理学会第64回年次大会
200903

Development of neutron focusing device using multipole magnets
Kira Hiroshi; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Takata Shinichi; Arai Masatoshi
日本物理学会第64回年次大会
200903

Development of an intense smaller-angle neutron scattering instrument in J-PARC
Suzuki Junichi; Takata Shinichi; Shinohara Takenao; Oku Takayuki; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本物理学会第64回年次大会
200903

A Magnetic multiplet lens for pulsed neutron beam focusing
Oku Takayuki; Kira Hiroshi; Shinohara Takenao; Takata Shinichi; Arai Masatoshi; Suzuki Junichi
日本物理学会第64回年次大会
200903

A Polarized SANS study of spherical Fe-N nanoperticles for magnetic recording tape, 3
Hagiya Hiroyuki; Oku Takayuki; Kira Hiroshi; Shinohara Takenao; Suzuki Junichi; Takeda Masayasu; Tamai Yuta; Kakurai Kazuhisa; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本中性子科学会第8回年会
200812

Research of detector arrangement for HI-SANS in J-PARC and wide-range structure analysis with Reverse Monte Carlo method
Takata Shinichi; Shinohara Takenao; Suzuki Junichi; Oku Takayuki; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本中性子科学会第8回年会
200812

Polarized neutron diffractometry of Fe${}_{16}$N${}_{2}$ nanoparticles
Tamai Yuta; Ishii Yuya*; Hagiya Hiroyuki; Kikuchi Takayuki*; Yokoyama Makoto*; Nishihara Yoshikazu*; Takeda Masayasu; Kakurai Kazuhisa; Oku Takayuki; Shinohara Takenao; Kira Hiroshi; Suzuki Junichi; Sasaki Yuji*; Kishimoto Mikio*
日本中性子科学会第8回年会
200812

A High performance neutron polarizer using magnetic super mirrors
Shinohara Takenao; Takata Shinichi; Suzuki Junichi; Oku Takayuki; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本中性子科学会第8回年会
200812

Smaller-angle neutron scattering instrument of J-PARC with polarizing and magnetic focusing options
Suzuki Junichi; Shinohara Takenao; Takata Shinichi; Oku Takayuki; Kira Hiroshi; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
JCNS Workshop 2008; Modern Trends in Neutron Scattering Instrumentation
200810

Development of nanostructure analysis method using data to wide range of q for HI-SANS at J-PARC
Takata Shinichi; Shinohara Takenao; Suzuki Junichi; Oku Takayuki; Suzuya Kentaro; Aizawa Kazuya; Otomo Toshiya*; Sugiyama Masaaki*; Arai Masatoshi
1st J-PARC International Symposium; International Symposium on Pulsed Neutron and Muon Sciences at J-PARC 2008 (IPS '08)
200803

Development and application of multiple sextupole magnet for focusing of polychromatic neutron beam
Suzuki Junichi; Oku Takayuki; Shinohara Takenao; Shimizu Hirohiko*; Pynn R.*
日本物理学会第63回年次大会
200803

Magnetization process of nano crystalline soft magnets studied by small-angle polarized neutron scattering experiments
Shinohara Takenao; Suzuki Junichi; Onuma Masato*; Oku Takayuki; Onuma Shigehiro*
日本物理学会第63回年次大会
200803

A Small-angle polarized neutron scattering study of spherical Fe-N particles for magnetic recording tape
Oku Takayuki; Kikuchi Takayuki; Shinohara Takenao; Suzuki Junichi; Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本物理学会第63回年次大会
200803

Conceptual design of the smaller-angle neutron scattering instrument HI-SANS for J-PARC
Suzuki Junichi; Shinohara Takenao; Takata Shinichi; Oku Takayuki; Suzuya Kentaro; Aizawa Kazuya; Arai Masatoshi; Otomo Toshiya*; Sugiyama Masaaki*
日本中性子科学会第7回年会
200711

Research of data analysis and detector arrangement for HI-SANS in J-PARC
Takata Shinichi; Suzuki Junichi; Shinohara Takenao; Oku Takayuki; Suzuya Kentaro; Aizawa Kazuya; Otomo Toshiya*; Sugiyama Masaaki*; Arai Masatoshi
日本中性子科学会第7回年会
200711

A Study of diameter dependence of magnetic moments on Fe$_{16}$N$_{2}$ nanoparticles by polarized neutrons diffraction
Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Kikuchi Takayuki; Shinohara Takenao; Oku Takayuki; Suzuki Junichi; Kishimoto Mikio*; Sasaki Yuji*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本中性子科学会第7回年会
200711

Optics and shieldings designs of HI-SANS for J-PARC
Shinohara Takenao; Takata Shinichi; Suzuki Junichi; Oku Takayuki; Suzuya Kentaro; Aizawa Kazuya; Otomo Toshiya*; Sugiyama Masaaki*; Arai Masatoshi
日本中性子科学会第7回年会
200711

Development of a highly polarizing and focusing system for a cold neutron beam and its application to SANS experiments
Oku Takayuki; Shinohara Takenao; Kikuchi Takayuki; Oba Yojiro; Iwase Hiroki; Koizumi Satoshi; Suzuki Junichi; Shimizu Hirohiko
日本中性子科学会第7回年会
200711

A Polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape, 2
Kikuchi Takayuki; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本中性子科学会第7回年会
200711

Polarized neutron scattering investigation of Fe$_{16}$N$_{2}$ nano-particles and future perspectives at J-PARC
Kakurai Kazuhisa; Oku Takayuki
日研第679回研究討論会
200710

Application of a neutron polarizing device based on a quadrupole magnet to a focusing SANS instrument with a magnetic neutron lens
Oku Takayuki; Shinohara Takenao; Kikuchi Takayuki; Oba Yojiro; Iwase Hiroki; Koizumi Satoshi; Suzuki Junichi; Shimizu Hirohiko
日本物理学会第62回年次大会
200709

Polarization SANS study of spherical Fe-N nanoparticles for magnetic recording tape
Kikuchi Takayuki; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
第31回日本応用磁気学会学術講演会
200709

Evaluation of magnetic moments on particulate Fe$_{16}$N$_{2}$ by polarized neutrons
Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Kikuchi Takayuki; Shinohara Takenao; Oku Takayuki; Suzuki Junichi; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
第31回日本応用磁気学会学術講演会
200709

2D elemental analysis approach in focused neutron beam induced prompt $\gamma$-ray analysis at JAEA
Segawa Mariko; Matsue Hideaki; Sekiya Yuji*; Yamada Satoru*; Shinohara Takenao; Oku Takayuki; Suzuki Junichi; Shimizu Hirohiko*
12th International Conference on Modern Trends in Activation Analysis (MTAA-12)
200709

High-q performance of the J-PARC small-angle neutron scattering instrument (HI-SANS) for observation of biological molecules with atomic resolution
Takata Shinichi; Suzuki Junichi; Shinohara Takenao; Oku Takayuki; Suzuya Kentaro; Aizawa Kazuya; Otomo Toshiya*; Arai Masatoshi
18th Meeting of the International Collaboration on Advanced Neutron Sources (ICANS-18)
200704

Focusing of pulsed polychromatic neutron beam by a compound sextupole magnet
Suzuki Junichi; Oku Takayuki; Shinohara Takenao; Shimizu Hirohiko; Pynn R.*
日本物理学会2007年春季大会(物性)
200703

A Polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape, 2
Oku Takayuki; Kikuchi Takayuki; Oba Yojiro; Shinohara Takenao; Suzuki Junichi; Ishii Yuya; Oitani Seiki; Takeda Masayasu; Kakurai Kazuhisa; Yokoyama Makoto*; Nishihara Yoshikazu*; Sasaki Yuji*; Kishimoto Mikio*
日本物理学会2007年春季大会(物性)
200703

Neutron beam focusing by a pulsed sextupole electromagnet
Shinohara Takenao; Suzuki Junichi; Oku Takayuki; Iwashita Hidenori*; Kamiyama Takashi*; Iwasa Hirokatsu*; Hiraga Fujio*; Kiyanagi Yoshiaki*; Sato Koichi*; Shimizu Hirohiko*
日本物理学会2007年春季大会(物性)
200703

Development of a pulsed sextupole electromagnet for pulsed neutron focusing
Shinohara Takenao; Suzuki Junichi; Oku Takayuki; Iwashita Hidenori*; Kamiyama Takashi*; Iwasa Hirokatsu*; Hiraga Fujio*; Kiyanagi Yoshiaki*; Sato Koichi*; Shimizu Hirohiko*
日本中性子科学会第6回年会
200612

Development of a highly efficient neutron polarizing device based on a quadrupole magnet
Oku Takayuki; Yamada Satoru*; Shinohara Takenao; Suzuki Junichi; Mishima Kenji*; Hirota Katsuya*; Sato Hiromi*; Shimizu Hirohiko
日本中性子科学会第6回年会
200612

Magnetic focusing of pulsed polychromatic neutrons
Suzuki Junichi; Shinohara Takenao; Oku Takayuki; Shimizu Hirohiko; Pynn R.*
日本中性子科学会第6回年会
200612

Measurement of the magnetic form factor of $\alpha$-Fe and CoFe powder by polarized neutron diffraction
Oitani Seiki; Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Kikuchi Takayuki; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Yokoyama Makoto*; Nishihara Yoshikazu*; Sasaki Yuji*; Kishimoto Mikio*
日本中性子科学会第6回年会
200612

Magnetic formfactors of particulate Fe$_{16}$N$_{2}$ measured by polarized neutrons
Ishii Yuya; Oitani Seiki; Takeda Masayasu; Kakurai Kazuhisa; Kikuchi Takayuki; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本中性子科学会第6回年会
200612

2D elemental analysis approach in focused neutron beam induced prompt $\gamma$-ray analysis at JAEA
Segawa Mariko; Matsue Hideaki; Sekiya Yuji*; Yamada Satoru*; Shinohara Takenao; Oku Takayuki; Sasao Hajime*; Suzuki Junichi; Shimizu Hirohiko
2006日本放射化学会年会・第50回放射化学討論会記念大会
200610

Polarized SANS study of spherical Fe-N nanoparticles for magnetic recording tape
Kikuchi Takayuki; Oku Takayuki; Shinohara Takenao; Suzuki Junichi; Ishii Yuya; Takeda Masayasu; Kakurai Kazuhisa; Sasaki Yuji*; Kishimoto Mikio*; Yokoyama Makoto*; Nishihara Yoshikazu*
日本物理学会2006年秋季大会(物性)
200609

Highly polarized neutron beam produced by a quadrupole magnet and its application to fundamental physics
Yamada Satoru; Oku Takayuki; Mishima Kenji*; Sato Hiromi*; Hirota Katsuya*; Morishima Takahiro*; Ono Masashi*; Shinohara Takenao; Suzuki Junichi; Shimizu Hirohiko*
日本物理学会2006年秋季大会(理論核物理,実験核物理,宇宙線・宇宙物理)
200609

Neutron Beta Decay experiment(NBD) at JRR-3; Measurement of beta decay events
Yamada Satoru; Mishima Kenji*; Sato Hiromi*; Hirota Katsuya*; Shinohara Takenao*; Morishima Takahiro*; Ono Masashi*; Oku Takayuki; Suzuki Junichi; Shimizu Hirohiko*
日本物理学会第61回年次大会
200603

Development of a neutron polarizer based on a quadrupole magnet
Oku Takayuki; Yamada Satoru; Suzuki Junichi; Mishima Kenji*; Shinohara Takenao*; Ikeda Kazuaki*; Hirota Katsuya*; Sato Hiromi*; Shimizu Hirohiko*
日本物理学会第61回年次大会
200603

Applications of MgF$_{2}$ focusing lens to small-angle neutron scattering
Iwase Hiroki; Koizumi Satoshi; Oku Takayuki; Suzuki Junichi
8th International Conference on Neutron Scattering (ICNS 2005)
200511

Pioneering of neutron spin polarization material science
Grant-in-Aid for Scientific Research (S)
Tohoku University
05 Jul. 2021 - 31 Mar. 2026

Development and applications of multiple wavelength neutron holography toward atomic imaging of light elements and magnetic structures
Grant-in-Aid for Scientific Research (A)
Nagoya Institute of Technology
01 Apr. 2019 - 31 Mar. 2024

Elucidation of composite excitations by three-dimensional neutron spin polarization analysis using J-PARC
Grant-in-Aid for Scientific Research (A)
Tohoku University
05 Apr. 2021 - 31 Mar. 2022

Development and application of an epithermal neutron polarizing device
Grant-in-Aid for Scientific Research (C)
Japan Atomic Energy Agency
01 Apr. 2018 - 31 Mar. 2021

Study on strongly correlated electron systems by using high-order neutron magnetic scattering processes
Grant-in-Aid for Scientific Research (A)
Tohoku University
01 Apr. 2011 - 31 Mar. 2016

Multi-Wavelength Atomic Resolution Holography Technique using White Neutron in J-PARC
Grant-in-Aid for Challenging Exploratory Research
Tohoku University
01 Apr. 2012 - 31 Mar. 2015

Detection and Application of Neutron Polarization of Polarized Noble Gas by Neutron- Nuclear Resonant Reaction
Grant-in-Aid for Scientific Research (C)
Japan Atomic Energy Agency
2010 - 2012

Development of a method to focus a polychromatic neutron beam with a multiple magnet.
Grant-in-Aid for Scientific Research (C)
Japan Atomic Energy Agency
2008 - 2010

Development and application of a neutron polarizing and focusing system based on magnetic field gradients
Grant-in-Aid for Scientific Research (B)
Japan Atomic Energy Agency
2008 - 2010

中性子スピン・エネルギー分析器を用いた中性子スピンエコー装置の開発研究
若手研究(B)
2002 - 2004

中性子光学技術を用いた微少量試料での詳細構造決定の試み
萌芽研究
東北大学
2002 - 2003

超伝導トンネル接合素子を用いた硬X線検出器の基礎開発
萌芽研究
独立行政法人理化学研究所
2002 - 2003

STJ検出器による高効率極端紫外線望遠鏡のための多層膜光学素子の開発
萌芽研究
独立行政法人理化学研究所
2001 - 2003

Development of 2 dimensional array EUV superconducting tunnel junction detector
Grant-in-Aid for Scientific Research (B)
特殊法人理化学研究所
2000 - 2002

Development of Energy-dispersive UV Superconducting Tunnel Junction Detectors
Grant-in-Aid for Scientific Research (B)
RIKEN
2000 - 2002

中性子エネルギー分析器の開発とその実用化に関する研究
奨励研究(A)
理化学研究所
2000 - 2001

超伝導トンネル接合素子を用いた可視光1光子分光検出器の基礎開発
萌芽的研究
理化学研究所
1999 - 2000

冷中性子シンチレーションカウンタ
萌芽的研究
理化学研究所
1999 - 1999

Research of Superconduting Tunnel Junctions for Visible Photon and Molecular Beam
Grant-in-Aid for Scientific Research (B)
RIKEN (The Institute of Physical and Chemical Research)
1997 - 1999

Research and Development of Superconduting Tunnel Junctions for X-ray Astronomy
Grant-in-Aid for Scientific Research (A)
RIKEN (The Institute of Physical and Chemical Research)
1996 - 1998