Refine your search:     
Report No.
 - 
Search Results: Records 1-12 displayed on this page of 12
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Neutron-sensitive ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ ceramic scintillator detector as an alternative to a $$^{3}$$He-gas-based detector for a plutonium canister assay system

Nakamura, Tatsuya; Ozu, Akira; To, Kentaro; Sakasai, Kaoru; Suzuki, Hiroyuki; Honda, Katsunori; Birumachi, Atsushi; Ebine, Masumi; Yamagishi, Hideshi*; Takase, Misao; et al.

Nuclear Instruments and Methods in Physics Research A, 763, p.340 - 346, 2014/05

 Times Cited Count:3 Percentile:30.04(Instruments & Instrumentation)

A neutron-sensitive ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ ceramic scintillator detector was developed as an alternative to a $$^{3}$$He-gas-based detector for use in a plutonium canister assay system. The detector has a modular structure, with a flat ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ceramic scintillator strip that is installed diagonally inside a light-reflecting aluminium case with a square cross section. The prototype detectors, which have a neutron-sensitive area of 30 mm $$times$$ 250 mm, exhibited a sensitivity of 21.7-23.4 $$pm$$ 0.1 cps$$/$$nv for thermal neutrons, a $$^{137}$$Cs $$gamma$$-ray sensitivity of 1.1-1.9 $$pm $$0.2 $$times$$ 10$$^{-7}$$ and a count variation of less than 6% over the detector length. A trial experiment revealed a temperature coefficient of less than -0.24$$pm$$ 0.05% / $$^{circ}$$C over the temperature range of 20-50$$^{circ}$$C.

Journal Articles

A Position-sensitive tubular scintillator-based detector as an alternative to a $$^{3}$$He-gas-based detector for neutron-scattering instruments

Nakamura, Tatsuya; Katagiri, Masaki*; To, Kentaro; Honda, Katsunori; Suzuki, Hiroyuki; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru; Soyama, Kazuhiko

Nuclear Instruments and Methods in Physics Research A, 741, p.42 - 46, 2014/03

 Times Cited Count:6 Percentile:50.1(Instruments & Instrumentation)

A position-sensitive tubular scintillator-based neutron detector is proposed as an alternative to a $$^{3}$$He-gas-based detector. The detector has a neutron-detecting element constructed from rolled ZnS/$$^{6}$$LiF scintillator screens that sandwich wavelength-shifting (WLS) fibre coils (SFC element). Multiple SFC elements are enclosed in an aluminium tube in a row to form a one-dimensional position-sensitive neutron detector. The design of the WLS fibre coil, which was determined by performing basic experiments, comprised two 0.75-mm-diameter WLS fibres wound in parallel at a pitch of 1.5 mm. A 64-element detector with a pixel size of 22 mm $$times$$ 20 mm (width $$times$$ length) successfully demonstrated the detection principle. The tubular shape of the new detector is similar to the usual 25-mm-diameter $$^{3}$$He tube, making this an alternative detector with the potential to be installed in a vacuum tank for inelastic-neutron-scattering instruments.

Journal Articles

A Scintillator-based detector with sub-100-$$mu$$m spatial resolution comprising a fibre-optic taper with wavelength-shifting fibre readout for time-of-flight neutron imaging

Nakamura, Tatsuya; To, Kentaro; Kawasaki, Takuro; Honda, Katsunori; Suzuki, Hiroyuki; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru; Soyama, Kazuhiko; Katagiri, Masaki*

Nuclear Instruments and Methods in Physics Research A, 737, p.176 - 183, 2014/02

 Times Cited Count:11 Percentile:72.25(Instruments & Instrumentation)

Journal Articles

Development of a 13T-46kA Nb$$_{3}$$Sn conductor and central solenoid model coils for ITER

Takahashi, Yoshikazu; Ando, Toshinari; Hiyama, Tadao; Nakajima, Hideo; Kato, Takashi; Sugimoto, Makoto; Isono, Takaaki; Oshikiri, Masayuki*; Kawano, Katsumi; Koizumi, Norikiyo; et al.

Fusion Engineering and Design, 41(1-4), p.271 - 275, 1998/09

 Times Cited Count:4 Percentile:39.76(Nuclear Science & Technology)

no abstracts in English

Oral presentation

Alternative He-3 neutron detectors using solid scintillator for nuclear safeguard, 1

Nakamura, Tatsuya; Ozu, Akira; To, Kentaro; Ebine, Masumi; Birumachi, Atsushi; Suzuki, Hiroyuki; Honda, Katsunori; Takase, Misao; Kurata, Noritaka; Haruyama, Mitsuo; et al.

no journal, , 

no abstracts in English

Oral presentation

Position-sensitive scintillation detector for neutron diffractometers in J-PARC, 3; Advanced signal readout/processing system for the scintillator/RPMT detector

Birumachi, Atsushi; Ebine, Masumi; Nakamura, Tatsuya; To, Kentaro; Sakasai, Kaoru; Honda, Katsunori; Soyama, Kazuhiko; Katagiri, Masaki*

no journal, , 

no abstracts in English

Oral presentation

Position-sensitive scintillation detector for neutron diffractometers in J-PARC, 2; Photon-counting signal processing circuit with COG/interpolation method

Ebine, Masumi; Birumachi, Atsushi; Nakamura, Tatsuya; To, Kentaro; Sakasai, Kaoru; Honda, Katsunori; Soyama, Kazuhiko; Katagiri, Masaki*

no journal, , 

no abstracts in English

Oral presentation

Position-sensitive scintillation detector for neutron diffractometers in J-PARC, 1; Development of the 2-d detector for the protein diffractometer

Nakamura, Tatsuya; To, Kentaro; Sakasai, Kaoru; Honda, Katsunori; Ebine, Masumi; Birumachi, Atsushi; Soyama, Kazuhiko; Katagiri, Masaki*

no journal, , 

We have initiated the development of the two-dimensional scintillator neutron detector for a protein diffractometer. The diffractometer is planned to be built in the J-PARC/MLF near future. We propose the detector designs that could fulfill the required specification for the instrument together with some basic experimental results.

Oral presentation

Development of position-sensitive scintillation neutron detectors in J-PARC/MLF

Nakamura, Tatsuya; To, Kentaro; Honda, Katsunori; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru; Soyama, Kazuhiko; Katagiri, Masaki*

no journal, , 

Position-sensitive scintillation neutron detectors developed for neutron scattering instruments in the Materials and Life science experimental Facility in Japan Proton Accelerator Research Complex (J-PARC/MLF) are briefly reviewed. Most of our detectors employ clear or wavelength-shifting(WLS) fibre read-out technologies coupled with the ZnS/10B$$_{2}$$O$$_{3}$$ ceramic scintillator or ZnS/$$^{6}$$LiF scintillator. The detector parameters such as detection area, pixel size vary in each instrument, the detector using WLS fibres can meet such requirements with a proper design: selecting a fiber diameter, a pitch between the fibres etc. By fully exploiting this flexibility in detector design we have developed the detector that has an even larger area than SENJU detector as alternative to a $$^{3}$$He gas-based detector. In the presentation we would like to mention further possibility of the scintillator-based WLS fibre technologies and detectors to the future instruments.

Oral presentation

Position-sensitive scintillation detector for neutron diffractometers in J-PARC; A Time-of-flight neutron image detector with a sub 100-micron spatial resolution

Nakamura, Tatsuya; To, Kentaro; Honda, Katsunori; Ebine, Masumi; Birumachi, Atsushi; Sakasai, Kaoru; Soyama, Kazuhiko; Katagiri, Masaki*

no journal, , 

We have developed a time-of-flight neutron imager based on the two-dimensional scintillator neutron detector technology for applications in the J-PARC/MLF. The detector is comprised of a thin ZnS scintillator with crossed wavelength-shifting-fibers arrays equipped with the fiber optic taper. The developed detector based on a neutron counting method has a high spatial resolution of less than 100 um in full width at half maximum with a $$gamma$$-ray sensitivity of less than 1010$$^{-7}$$. The detector design and basic detector performances are presented.

Oral presentation

2-d scintillation detector for neutron protein diffractometer in J-PARC, 2; FPGA-based center of gravity circuit for a photon counting detector

Ebine, Masumi; Nakamura, Tatsuya; To, Kentaro; Honda, Katsunori; Birumachi, Atsushi; Sakasai, Kaoru

no journal, , 

The center of gravity method is developed for a two-dimensional scintillator neutron detector for a protein diffractometer in the J-PARC/MLF. Details of the FPGA-based digital signal processing circuit and the detector performances are presented.

Oral presentation

2-d scintillation detector for neutron protein diffractometer in J-PARC, 1; Detector performance of the large area prototype detector

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 $$gamma$$-ray sensitivity wil be presented.

12 (Records 1-12 displayed on this page)
  • 1