摘要
高能望远镜是硬X射线调制望远镜(HXMT)卫星的3台望远镜之一。其主要科学目标是在20～250keV能区进行巡天扫描,发现新的高能变源和已知源的新活动,同时监测伽马射线暴以及引力波暴电磁对应体。它的主探测器由18个直径为190mm的NaI(Tl)/CsI(Na)复合晶体探测器单体组成,具有5100cm2的几何面积,整体视场为5.7°×5.7°。高能望远镜在轨运行结果表明:探测器整体能量分辨率优于19%(在59.5keV时),时间分辨率和系统死时间优于6μs。
High energy telescope is one of the three payloads onboard the HXMT(hard X-ray modulation telescope)satellite.The high energy telescope performs an all-sky scan survey in the 20~250keV to find new energetic sources and study new energetic process of the astrophysics sources.Meanwhile it can monitor the GRB(gamma ray bursts)and electromagnetic counterparts of gravitational waves.The high energy telescope is consisted of 18 actively shielded NaI(Tl)/CsI(Na)phoswich scintillator detectors with a total geometric area of 5100cm 2.The diameter of the phoswich scintillator detector is 190mm and the combined field view of the detector array is 5.5°×5.7°.The in-orbit operation results show that energy resolutions of high energy telescope detectors are better than 19%@59.5keV.The time resolution and dead time of the system are less than 6μs.
作者
李旭芳
刘聪展
张翼飞
李正伟
路雪峰
张爱梅
张钊
金永杰
LI Xufang;LIU Congzhan;ZHANG Yifei;LI Zhengwei;LU Xuefeng;ZHANG Aimei;ZHANG Zhao;JIN Yongjie(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Department of Physics,Tsinghua University,Beijing 100084,China;Department of Engineering Physics,Tsinghua University,Beijing 100084,China)
出处
《航天器工程》
CSCD
北大核心
2018年第5期120-126,共7页
Spacecraft Engineering
基金
国家重点研发计划项目(2016YFA0400800)
空间科学先导专项(XDA04010202)
