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

ファイバ光学テーパと波長シフトファイバ光読み出しよるサブ100m分解能のTOF中性子イメージングのためのシンチレータ検出器

中村 龍也  ; 藤 健太郎  ; 川崎 卓郎   ; 本田 克徳; 鈴木 浩幸; 海老根 守澄 ; 美留町 厚; 坂佐井 馨  ; 曽山 和彦  ; 片桐 政樹*

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

A scintillator-based neutron-counting imaging detector with a sub-100-m spatial resolution was developed for energy-selective neutron imaging. The detector head of the detector comprised a thin ZnS/LiF scintillator screen, a fibre-optic taper and crossed wavelength-shifting (WLS) fibre arrays. The developed detector had a pixel size of 34 m 34 m, and exhibited spatial FWHM resolutions of 80 m and 61 m in the x and y directions, respectively. A small prototype detector demonstrated the capability of neutron imaging using Bragg edges of a Cu/Fe sample when using the pulsed-neutron source in the Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex.