Spatial resolution test targets made of gadolinium and gold for conventional and resonance neutron imaging

コンベンショナルな中性子イメージング及び中性子共鳴イメージングのためのテストデバイス開発

瀬川 麻里子   ; 及川 健一   ; 甲斐 哲也   ; 篠原 武尚   ; 林田 洋寿*; 松本 吉弘*; Parker, J. D.*; 中谷 健 ; 廣井 孝介  ; Su, Y. H.  ; 鬼柳 善明*

Segawa, Mariko; Oikawa, Kenichi; Kai, Tetsuya; Shinohara, Takenao; Hayashida, Hirotoshi*; Matsumoto, Yoshihiro*; Parker, J. D.*; Nakatani, Takeshi; Hiroi, Kosuke; Su, Y. H.; Kiyanagi, Yoshiaki*

We have fabricated and utilized spatial resolution test targets made of gadolinium and gold for conventional and resonance neutron imaging performed at RADEN, located at beam line BL22 of the J-PARC Materials and Life Science Experimental Facility (MLF). RADEN covers a broad energy range from cold neutrons to high-energy neutrons with energy of several tens keV and was designed to perform energy-resolved neutron imaging utilizing two-dimensional detectors combined with the accurate measurement of neutron energy by the time-of-flight method. The test targets were designed to verify the spatial resolution and image uniformity of two kinds of neutron detectors, counting-type detectors and camera-type detectors. In this presentation, we report the details of these two-dimensional test targets, and the results of demonstrations using the test targets with our neutron imaging detectors. This work was supported in part by the Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan.