Newly developed low background hard X-ray/gamma-ray telescope with the well-type phoswich counters
Newly developed low background hard X-ray/gamma-ray telescope with the well-type phoswich counters
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新开发的低本底硬X射线/伽马射线望远镜，配备井式福斯威奇计数器
DOI：
10.1109/nssmic.1992.301364
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
H. Murakami
中科院分区：
文献类型：
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作者：
Tadayuki Takahashi;Shuichi Gunji;M. Hirayama;T. Kamae;S. Miyazaki;Yutaro Sekimoto;Takayuki Tamura;M. Tanaka;Noriko Y. Yamasaki;T. Yamagami;N. Nomachi;H. Murakami
已研制出一台用于球载实验的低本底硬X射线/伽马射线望远镜。该探测器被称为Welcome-1（井型复眼），采用新开发的井型phoswich计数器。在阱型phoswich计数器中，来自外部和内部（核激活）源的背景显著降低。Welcome-1由64个GSO/CsI阱型phoswich计数器组成，组装在复眼配置中。在4 g/cm/sup 2/高度处的本底水平在122 keV时为1*10/sup-4//cm/sup 2//s/keV。蟹状星云已被观察到的信号背景比优于统一之间的100和200千电子伏。<<ETX>>
A low-background hard X-ray/gamma-ray telescope for balloon-borne experiments has been developed. The detector, called Welcome-1 (Well Type Compound Eye) utilizes newly developed well-type phoswich counters. In the well-type phoswich counter, the background from external and internal (nuclear activation) sources is reduced significantly. Welcome-1 consists of 64 GSO/CsI well-type phoswich counters assembled in the compound-eye configuration. The background levels at an altitude of 4 g/cm/sup 2/ are 1*10/sup -4//cm/sup 2//s/keV at 122 keV. The Crab nebula has been observed with a signal to background ratio better than unity between 100 and 200 keV.<<ETX>>