Development of compact wide-angle imaging detector for MeV gamma-rays using stacked BGO scintillator rods

Kenichi Watanabe, Shinji Mihoya, Jun Kawarabayashi, Tetsuo Iguchi

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

2 被引用数 (Scopus)

抄録

We are developing a compact wide-angle imaging detector for MeV gamma-rays using stacked BGO scintillator rods to apply to neutron induced prompt gamma-ray analysis (NPGA), which is one of the promising methods for non-destructive detection of hidden explosives by measuring characteristic gamma-rays produced from chemical elements. The gamma-ray imaging in NPGA applications is also necessary to locate them and improve the signal-to-noise ratio. A compact wide-angle imaging detector has an advantage in detection efficiency, because it can take images at short distance from inspection objects. For a compact wide-angle imaging detector for MeV gamma-rays, we have proposed the image reconstruction technique based on the statistical estimation algorithm using stacked BGO scintillator rods that can get information on energies and 3D positions. In this paper, we mainly discussed an information processing method for recorded signals especially to provide the additional function rejecting pile-up events, which makes our detector possible to operate in high dose filed. Through the EGS4 simulations modeling our detector units, we successfully demonstrated that the pile-up events can be suppressed by picking out only events with small spatial deviation of scintillation positions. In addition, we experimentally demonstrated nitrogen imaging based on NPGA using our gamma-ray detector.

本文言語英語
ホスト出版物のタイトル2006 IEEE Nuclear Science Symposium - Conference Record
出版社Institute of Electrical and Electronics Engineers Inc.
ページ253-256
ページ数4
ISBN(印刷版)1424405610, 9781424405619
DOI
出版ステータス出版済み - 2006
外部発表はい
イベント2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD - San Diego, CA, 米国
継続期間: 10月 29 200611月 4 2006

出版物シリーズ

名前IEEE Nuclear Science Symposium Conference Record
1
ISSN(印刷版)1095-7863

その他

その他2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD
国/地域米国
CitySan Diego, CA
Period10/29/0611/4/06

!!!All Science Journal Classification (ASJC) codes

  • 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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