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Journal Articles

A Half-millimetre spatial resolution fibre-coded linear position-sensitive scintillator detector with wavelength-shifting fibre read-out for neutron detection

Nakamura, Tatsuya; Schooneveld, E. M.*; Rhodes, N. J.*; Katagiri, Masaki; To, Kentaro; Sakasai, Kaoru; Soyama, Kazuhiko

Nuclear Instruments and Methods in Physics Research A, 606(3), p.675 - 680, 2009/07

 Times Cited Count:10 Percentile:42.19(Instruments & Instrumentation)

JAEA Reports

Development for upgrading Japanese ENGIN-X type linear scintillation neutron detectors; Development of new ZnS scintillator, light reflector and digital signal processing module

Nakamura, Tatsuya; Katagiri, Masaki; Birumachi, Atsushi; Ebine, Masumi; Tsutsui, Noriaki*; Soyama, Kazuhiko; Schooneveld, E. M.*; Rhodes, N. J.*

JAEA-Research 2008-116, 26 Pages, 2009/03

JAEA-Research-2008-116.pdf:4.25MB

New ZnS scintillator, light reflector and digital signal processing modules were developed to upgrade the Japanese ENGIN-X type linear scintillation neutron detector. The developed ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ scintillator improved detector efficiency by a factor 1.2 for neutrons with a wavelength of 1 ${AA}$ whilst the detector maintained similar $$gamma$$ sensitivity and multi-count ratio compared to the present AST (4:1) scintillator. The paint coating less light reflector was developed with an aluminum reflector with etched surface. The detector implemented with this reflector exhibited similar detector performances with paint coating reflectors, confirming feasibility of the reflector with long-term stability. The digital signal-processing module incorporating photon-counting method was successfully developed. The fully digitalized photon counting system improved a temperature stability of neutron counts significantly comparing to the present analogue system.

JAEA Reports

Development of two-dimensional scintillator neutron detector using wavelength-shifting fibres; Development of a compact detector for iBIX instrument in J-PARC/MLF

Nakamura, Tatsuya; Katagiri, Masaki; Hosoya, Takaaki*; Birumachi, Atsushi; Ebine, Masumi; Soyama, Kazuhiko; Schooneveld, E.*; Rhodes, N.*

JAEA-Research 2008-115, 33 Pages, 2009/03

JAEA-Research-2008-115.pdf:3.77MB

A compact two-dimensional neutron detector was developed for iBIX instrument in the J-PARC/MLF. The specifications required for the detector were a spatial resolution of less than 1 mm, a detector efficiency of more than 50% for thermal neutrons, a $$gamma$$ sensitivity of less than 10$$^{6}$$, detector coverage of around 15$$times$$15 cm$$^{2}$$ with least dead area, compactness, modularity, and a pulse pair resolution of less than 2 $$mu$$s. The detector components were studied in detail and optimized for the purpose. The compact prototype detector that has a neutron sensitive area of 13.3$$times$$13.3 cm$$^{2}$$ was made and feasibility of the detector was demonstrated successfully in the experiments at the ISIS pulsed neutron source.

JAEA Reports

Performance test of the Japanese ENGIN-X type linear scintillation neutron detector

Nakamura, Tatsuya; Sakasai, Kaoru; Katagiri, Masaki; Birumachi, Atsushi; Hosoya, Takaaki; Soyama, Kazuhiko; Sato, Setsuo*; Shooneveld, E.*; Rhodes, N.*

JAEA-Research 2007-014, 14 Pages, 2007/03

JAEA-Research-2007-014.pdf:1.9MB

The ENGIN-X type linear scintillation neutron detector was manufactured in Japan and the detector performances were evaluated. The ENGIN-X type linear scintillation neutron detector was originally developed by the detector group in Rutherford Appleton Laboratory and the Japanese prototype detector was identical to that which is one of the detector modules installed in the ENGIN-X diffractometer at ISIS pulsed neutron source. The prototype detector can install 240 elements of neutron-sensitive scintillator, where each element has 3 mm in width and 196 mm in length. The prototype detector exhibited a spatial resolution of 3 mm, detection efficiency of 64% for neutrons with wave-lengths of 1.8${AA}$, count uniformity of 6$$sim$$7%, $$^{60}$$Co $$gamma$$ sensitivity of $$sim$$5$$times$$10$$^{-7}$$. Technological transfer to the Japanese manufacturer was done successfully and the mass production of these detectors for the J-PARC project is feasible.

JAEA Reports

Characteristics of 64 $$times$$ 64 channel high-position resolution neutron imaging detector

Sakasai, Kaoru; Katagiri, Masaki; Matsubayashi, Masahito; Rhodes, N.*; Schoonveld, E.*

JAERI-Research 2004-020, 19 Pages, 2004/12

JAERI-Research-2004-020.pdf:4.57MB

no abstracts in English

Journal Articles

A Compact neutron detector using scintillators with wavelength shifting fibers by backside readout method

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:11 Percentile:38.36(Instruments & Instrumentation)

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 1; Fabrication of ISIS-type one-dimensional neutron detector and its operational test

Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; Soyama, Kazuhiko; Birumachi, Atsushi; Sato, Setsuo*; Rhodes, N.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 4; Neutron beam irradiation test of ISIS-type one-dimensional neutron detector

Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; Soyama, Kazuhiko; Birumachi, Atsushi; Sato, Setsuo*; Rhodes, N.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 8; Pulsed neutron beam test of ISIS-type one-dimensional neutron detector

Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; Soyama, Kazuhiko; Birumachi, Atsushi; Sato, Setsuo*; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 9; Neutron irradiation test of ISIS-type one-dimensional neutron detector

Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; Soyama, Kazuhiko; Birumachi, Atsushi; Sato, Setsuo*; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 12; Neutron diffraction experiments with ISIS-type one-dimensional neutron detector

Sakasai, Kaoru; Katagiri, Masaki; Nakamura, Tatsuya; Soyama, Kazuhiko; Birumachi, Atsushi; Sato, Setsuo*; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 16; Signal processing circuits for high S/N neutron beam monitor

Nakamura, Tatsuya; Katagiri, Masaki; Ebine, Masumi; Hosoya, Takaaki*; Soyama, Kazuhiko; Schooneveld, E.*; Rhodes, N.*

no journal, , 

We have developed pulsed neutron beam monitors with neutron scintillators composed of ZnS phosphors and neutron converters with very low neutron capture cross section. In order to develop neutron beam monitors with high S/N ratio and high counting rate characteristics, signal processing circuits with ISIS-type signal processing algorism were developed because ZnS phosphor has afterglow fluorescence and photomultipliers used for detection of fluorescence has many pulsed electric noises. Detection and signal processing characteristics as neutron beam monitors are reported.

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 13; Fabrication of actual-type one-dimensional neutron detector

Sakasai, Kaoru; Harjo, S.; Nakamura, Tatsuya; Moriai, Atsushi; Katagiri, Masaki; Soyama, Kazuhiko; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 14; Development of ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ ceramic scintillator

Katagiri, Masaki; Tsutsui, Noriaki*; Kojima, Takahiro*; Schooneveld, E.*; Rhodes, N.*; To, Kentaro; Sakasai, Kaoru; Soyama, Kazuhiko; Nakamura, Tatsuya

no journal, , 

ZnS/$$^{10}$$B$$_{2}$$O$$_{3}$$ ceramic scintillator was developed to improve a detector efficiency of the fibre-coded position sensitive neutron detector. The developed scintillator improved the detector efficiency by a factor 1.2 for neutrons with a wavelength of 1 ${AA}$.

Oral presentation

High detector efficiency neutron sensitive ZnS scintillator for TAKUMI instrument in J-PARC/MLF

Nakamura, Tatsuya; Sakasai, Kaoru; To, Kentaro; Katagiri, Masaki; Soyama, Kazuhiko; Rhodes, N.*; Schooneveld, E. M.*; Tsutsui, Noriaki*

no journal, , 

no abstracts in English

Oral presentation

Current status of neutron detectors for TAKUMI

Sakasai, Kaoru; Nakamura, Tatsuya; Moriai, Atsushi; Harjo, S.; Ito, Takayoshi; Abe, Jun; Aizawa, Kazuya; Soyama, Kazuhiko; Rhodes, N. J.*; Schooneveld, E. M.*

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 17; Performance test of neutron detector for J-PARC engineering diffractometer

Sakasai, Kaoru; Nakamura, Tatsuya; Moriai, Atsushi; Harjo, S.; Ito, Takayoshi; Abe, Jun; Aizawa, Kazuya; Katagiri, Masaki; Soyama, Kazuhiko; Rhodes, N.*; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of scintillator based neutron detectors for intense pulsed neutrons, 18; Development and installation of neutron detector for J-PARC engineering diffractometer

Sakasai, Kaoru; Nakamura, Tatsuya; Harjo, S.; Ito, Takayoshi; Abe, Jun; Aizawa, Kazuya; Katagiri, Masaki*; Soyama, Kazuhiko; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Neutron diffraction experiment using a small one-dimensional neutron detector

Sakasai, Kaoru; Nakamura, Tatsuya; To, Kentaro; Moriai, Atsushi; Katagiri, Masaki*; Soyama, Kazuhiko; Rhodes, N.*; Schoonveld, E.*

no journal, , 

no abstracts in English

Oral presentation

Performance test of a small one-dimensional neutron detector with a high position resolution

Sakasai, Kaoru; Nakamura, Tatsuya; To, Kentaro; Soyama, Kazuhiko; Rhodes, N.*; Schooneveld, E.*

no journal, , 

no abstracts in English

22 (Records 1-20 displayed on this page)