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大強度パルス中性子用シンチレーション検出器の開発

Development of scintillator based neutron detectors for intense pulsed neutrons

海老根 守澄 ; 中村 龍也  ; 片桐 政樹; 美留町 厚; 細谷 孝明*; 曽山 和彦  

Ebine, Masumi; Nakamura, Tatsuya; Katagiri, Masaki; Birumachi, Atsushi; Hosoya, Takaaki*; Soyama, Kazuhiko

J-PARCに使用するシンチレータと波長シフトファイバを用いた高位置分解能中性子イメージ検出器システムに用いるため、100MHzで動作するFPGA2個から構成する信号処理回路及びFPGAを2個使用したTOFデータ収集回路を開発し実用化した。

We have developed a high-position-resolution two-dimensional neutron imaging detector system used for pulsed-neutron scattering instruments in J-PARC. It is dispensable to develop a TOF signal processing and data acquisition system in this detector system. Therefore, we developed a TOF image signal-processing device with two 100 MHz FPGAs and a TOF data acquisition system with two FPGAs. Circuit design and its algorisms for TOF measurements and the fundamental performances for this system are reported.

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