多通道Si-PIN探测器漏电流测量系统的设计和实现  

Design and Implementation of Multi-channel Leakage Current Measurement System

作　　者：刘少真[1] 顾煜栋 曹学蕾[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049

出　　处：《核电子学与探测技术》2016年第6期625-627,650,共4页Nuclear Electronics & Detection Technology

摘　　要：中能望远镜是硬X射线望远镜卫星三大载荷之一,其探测器采用的是大面积Si-PIN探测器阵列。探测器的漏电流是影响X射线谱仪能量分辨率的一个关键因素。中能望远镜项目组在研发Si-PIN探测器的常温筛选环节中,将探测器漏电流作为一项重要考核指标。为了对探测器漏电流实现高精度、快速的测量,研制了多通道Si-PIN探测器漏电流测量系统。测量结果表明,使用该系统得到的漏电流结果精度较高,可直接应用到项目研制中去。Large area Si - PIN detectors are used in Medium energy telescope of HXMT satellite. Leakage cur- rent of the detector is one of the key points to determine the energy resolution, so leakage current was set as an important item in detectors production process. To realize highly precision and rapidly measurement of leakage current, a multi - channel leakage current measurement system was designed. The results show that our system has high precision, can be directly used in the project.

关 键 词：中能望远镜 Si—PIN探测器 漏电流测量 多通道 

分 类 号：TL821[核科学技术—核技术及应用]