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Nakamura, Tatsuya; To, Kentaro; Koizumi, Tomokatsu; Kiyanagi, Ryoji; Ohara, Takashi; Ebine, Masumi; Sakasai, Kaoru
Proceedings of 2022 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room Temperature Semiconductor Detector Conference (2022 IEEE NSS MIC RTSD) (Internet), 2 Pages, 2022/11
A new thin position-sensitive scintillation neutron detectors have been developed to replace present scintillation detectors in SENJU diffractometer at J-PARC MLF. The SENJU diffractometer originally composed of 37 position-sensitive detectors, where each detector has neutron sensitive area of 256 
256 mm with a pixel size of 4 4 mm. To renew some original detectors the new detectors have been developed based on ZnS scintillator and wavelength-shifting fibers technology. The developed replacement detectors were designed with a thin thickness of 12 cm, which is 40% of the original detector. The new detectors have also improved detector performances to the original ones in terms of detection efficiency (
60% for 2-A neutrons) and count uniformity (5-8%). The produced six detector modules have been implemented to the beamline after checking their detector performances in the lab.
Nakamura, Tatsuya; To, Kentaro; Sakasai, Kaoru
Hamon, 27(1), p.4 - 7, 2017/01
Development of scintillation neutron detectors using wavelength-shifting fiber (WLSF) technology at J-PARC MLF is briefly reviewed. The neutron-detecting head of this type detector comprises neutron-sensitive scintillator screens and WLSFs for light read out. The light collection using WLSFs enables us to design a detector with great flexibility. Detector specifications such as pixel size, spatial resolution, and neutron-sensitive area can be optimized to requirements in specific applications. We have intensively developed these detectors since 2005. A large number of detector modules have been produced and delivered to the neutron scattering instruments in the MLF. In this paper the design of SENJU detector is presented in detail together with recent development effort for detector technology alternative to helium-3 gas detectors.
Katagiri, Masaki; Matsubayashi, Masahito; Sakasai, Kaoru; Nakamura, Tatsuya; Ebine, Masumi; Birumachi, Atsushi; Rhodes, N.*
Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.313 - 316, 2004/08
Times Cited Count：13 Percentile：63.95(Instruments & Instrumentation)no abstracts in English
Katagiri, Masaki; Sakasai, Kaoru; Matsubayashi, Masahito; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Nuclear Instruments and Methods in Physics Research A, 513(1-2), p.374 - 378, 2003/11
Times Cited Count：3 Percentile：27.69(Instruments & Instrumentation)no abstracts in English
To, Kentaro; Katagiri, Masaki; Sakasai, Kaoru; Matsubayashi, Masahito; Birumachi, Atsushi; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Applied Physics A, 74(Suppl.1), p.S1601 - S1603, 2002/12
Times Cited Count：6 Percentile：28.33(Materials Science, Multidisciplinary)no abstracts in English
Katagiri, Masaki; To, Kentaro; Sakasai, Kaoru; Matsubayashi, Masahito; Birumachi, Atsushi; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Applied Physics A, 74(Suppl.1), p.S1604 - S1606, 2002/12
Times Cited Count：6 Percentile：28.33(Materials Science, Multidisciplinary)no abstracts in English
Katagiri, Masaki; Sakasai, Kaoru; Kishimoto, Maki; Nakamura, Tatsuya; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Nuclear Instruments and Methods in Physics Research A, 477(1-3), p.179 - 183, 2002/03
Times Cited Count：4 Percentile：29.4(Instruments & Instrumentation)no abstracts in English
Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
IEEE Transactions on Nuclear Science, 49(1), p.156 - 159, 2002/02
Times Cited Count：0 Percentile：0.01(Engineering, Electrical & Electronic)no abstracts in English
Sakasai, Kaoru; Katagiri, Masaki; To, Kentaro; Nakamura, Tatsuya; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Journal of the Physical Society of Japan, Vol.70, Supplement A, p.468 - 470, 2001/05
Times Cited Count：11 Percentile：56.48(Physics, Multidisciplinary)no abstracts in English
Katagiri, Masaki; Sakasai, Kaoru; Nakamura, Tatsuya; To, Kentaro; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
Nuclear Instruments and Methods in Physics Research A, 461(1-3), p.207 - 209, 2001/04
Times Cited Count：3 Percentile：28.27(Instruments & Instrumentation)no abstracts in English
To, Kentaro; Katagiri, Masaki; Sakasai, Kaoru; Nakamura, Tatsuya; Matsubayashi, Masahito; Takahashi, Hiroyuki*; Nakazawa, Masaharu*
JAERI-Conf 2001-002, p.627 - 638, 2001/03
no abstracts in English
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Spectrochimica Acta, Part B, 39(8), p.979 - 991, 1984/00
Times Cited Count：9 Percentile：70.84(Spectroscopy)no abstracts in English
Nakamura, Tatsuya; To, Kentaro; Honda, Katsunori; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru
no journal, ,
We have developed a two-dimensional scintation detector for the protein-dedicated neutron diffractometer to be constructed in J-PARC/MLF. The prototype detector exhibited a spatial resolution of 2.5 mm as expected in the detector design. The detector performances including 
-ray sensitivity wil be presented.
Nakamura, Tatsuya; To, Kentaro; Sakasai, Kaoru; Hosoya, Takaaki; Kiyanagi, Ryoji; Ohara, Takashi
no journal, ,
no abstracts in English
