The Soft Gamma-ray Detector for the ASTRO-H mission
The Soft Gamma-ray Detector for the ASTRO-H mission
复制标题
用于 ASTRO-H 任务的软伽马射线探测器
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
T. Yuasa
中科院分区：
文献类型：
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作者：
T. Tanaka;R. Blandford;K. Doutsu;T. Endo;T. Enoto;Y. Fukazawa;K. Fukami;T. Fukuyama;Y. Hanabata;J. Harayama;K. Hayashi;K. Hiragi;S. Ishikawa;J. Kataoka;J. Katsuta;T. Kitaguchi;M. Kokubun;M. Koseki;T. Kozu;G. Madejski;K. Makishima;M. Matsuoka;T. Miura;T. Mizuno;S. Nakahira;K. Nakajima;K. Nakazawa;S. Nishino;H. Nishioka;H. Noda;H. Odaka;S. Saito;S. Sasaki;R. Sato;S. Sugimoto;H. Tajima;T. Takahashi;M. Tashiro;Y. Terada;S. Torii;Y. Uchiyama;Y. Umeki;S. Watanabe;Y. Yaji;S. Yamada;K. Yamaoka;M. Yoshino;T. Yuasa
日本下一次高能天体物理任务ASTRO-H上的软伽马射线探测器(SGD)是一台窄视场康普顿望远镜，它利用康普顿运动学来增强其背景抑制能力。它被实现为一个混合半导体探测器系统，由硅探测器和碲化镉探测器组成。它可以探测宽能带(50-600keV)的光子，背景水平比铃鹿硬X射线探测器好10倍，并与ASTRO-H上的硬X射线成像仪相辅相成，能量覆盖范围为5-80keV。出色的能量分辨率是SGD的关键特征，使其能够利用良好的角度分辨率实现良好的背景抑制能力。SGD的另一项能力，即测量伽马射线偏振的能力，为研究伽马射线发射过程的特性打开了一扇新的窗口。在这里，我们介绍了SGD的仪器设计、预期性能和发展现状。
The Soft Gamma-ray Detector (SGD) on board ASTRO-H (Japanese next high-energy astrophysics mission) is a Compton telescope with narrow fleld-of-view, which utilizes Compton kinematics to enhance its background rejection capabilities. It is realized as a hybrid semiconductor detector system which consists of silicon and CdTe (cadmium telluride) detectors. It can detect photons in a wide energy band (50-600 keV) at a background level 10 times better than that of the Suzaku Hard X-ray Detector, and is complimentary to the Hard X-ray Imager on board ASTRO-H with an energy coverage of 5-80 keV. Excellent energy resolution is the key feature of the SGD, allowing it to achieve good background rejection capability taking advantage of good angular resolution. An additional capability of the SGD, its ability to measure gamma-ray polarization, opens up a new window to study properties of gamma-ray emission processes. Here we describe the instrument design of the SGD, its expected performance, and its development status.