Development of a neutron imaging detector based on the μPIC micro-pixel gaseous chamber

Joseph D. Parker, Kaori Hattori, Chihiro Ida, Satoru Iwaki, Shigeto Kabuki, Hidetoshi Kubo, Shunsuke Kurosawa, Kentaro Miuchi, Hironobu Nishimura, Michiaki Takahashi, Toru Tanimori, Kazuki Ueno

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

A new detector employing the micro-pixel gaseous chamber (μPIC) is currently being developed as a thermal neutron imaging detector for applications in small angle neutron scattering (SANS), neutron radiography, and radioactive material detection. Neutron detection is achieved through the 3He(n, p)3H absorption reaction by adding 3He to the usual Argon-Ethane gas mixture. The μPIC, with a pixel pitch of 400 microns, is coupled with an FPGA-based data acquisition system with a 100 MHz internal clock. This combined system has excellent spatial (< 1mm) and time (10 ns) resolutions and is capable of handling counting rates greater than 5 MHz. These qualities make it well suited to SANS measurements at pulsed neutron sources. Here, we report the performance of a new dedicated μPIC-based neutron imaging detector system along with the results of a test experiment at a small Tandem accelerator-based neutron source currently under development at Kyoto University. This new detector features a 10 x 10 x 5 cm3 active volume and operates at gas pressures up to 2 atm. With this design, we expect a neutron detection efficiency of ∼30% for a gas mixture containing 30% 3He at a total pressure of 2 atm. Additionally, an improved FPGA encoder program allows the simultaneous measurement of the track length and energy deposition, allowing a finer position resolution and strong rejection of the gamma-ray and fast neutron backgrounds.

本文言語English
ホスト出版物のタイトル2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
ページ1107-1112
ページ数6
DOI
出版ステータスPublished - 2009
外部発表はい
イベント2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
継続期間: 2009 10月 252009 10月 31

出版物シリーズ

名前IEEE Nuclear Science Symposium Conference Record
ISSN(印刷版)1095-7863

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
国/地域United States
CityOrlando, FL
Period09/10/2509/10/31

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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