Applications and imaging techniques of a Si/CdTe Compton gamma-ray camera

被引：25

作者：

Takeda, Shin'ichiro ^{[1
]}

Ichinohe, Yuto ^{[1
,2
]}

Hagino, Kouichi ^{[1
,2
]}

Odaka, Hirokazu ^{[1
]}

Yuasa, Takayuki ^{[1
]}

Ishikawa, Shin-nosuke ^{[3
]}

Fukuyama, Taro ^{[1
,2
]}

Saito, Shinya ^{[1
,2
]}

Sato, Tamotsu ^{[1
,2
]}

Sato, Goro ^{[1
]}

Watanabe, Shin ^{[1
]}

Kokubun, Motohide ^{[1
]}

Takahashi, Tadayuki ^{[1
]}

Yamaguchi, Mitsutaka ^{[4
]}

Tajima, Hiroyasu ^{[5
]}

Tanaka, Takaaki ^{[6
]}

Nakazawa, Kazuhiro ^{[2
]}

Fukazawa, Yasushi ^{[7
]}

Nakano, Takashi ^{[8
]}

机构：

[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan

[2] Univ Tokyo, Tokyo, Japan

[3] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[4] Takasaki Adv Radiat Res Inst, Japan Atom Energy Agcy, Takasaki, Gunma, Japan

[5] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan

[6] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA

[7] Hiroshima Univ, Hiroshima 730, Japan

[8] Gunma Univ, Grad Sch Med, Maengsang, Gunma 3718511, North Korea

来源：

PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011) | 2012年 / 37卷

关键词：

Gamma-ray imaging; Semiconductor Compton camera; Silicon double-sided strip detector; CdTe double-sided strip detector; Hotspot monitoring; RESOLUTION;

D O I：

10.1016/j.phpro.2012.04.096

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By using a new Compton camera consisting of a silicon double-sided strip detector (Si-DSD) and a CdTe double-sided strip detector (CdTe-DSD), originally developed for the ASTRO-H satellite mission, an experiment involving imaging radioisotopes was conducted to study their feasibility for hotspot monitoring. In addition to the hotspot imaging already provided by commercial imaging systems, identification of various radioisotopes is possible thanks to the good energy resolution obtained by the semiconductor detectors. Three radioisotopes of Ba-133 (356 keV), Na-22 (511 keV) and Cs-137 (662 keV) were individually imaged by applying event selection in the energy window and the gamma-ray images were correctly overlapped by an optical picture. Detection efficiency of 1.68 x10(-4) (effective area : 1.7 x10(-3) cm(2)) and angular resolution of 3.8 degrees were obtained by stacking five detector modules for a 662 keV gamma ray. The higher detection efficiency required in specific use can be achieved by stacking more detector modules. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.

引用

页码：859 / 866

页数：8

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