提高SiPM时间分辨能力方法研究——基于两种SiPM性能对比测试  

Study on the Method of Improving Time Resolution of SiPM—Based on the Testing of Two Types of SiPMs Coupled with YSO

作　　者：李维姣[1] 陈嘉敏[1] 陈瑞 奚道明 

机构地区：[1]公安部第三研究所,上海 [2]苏州瑞迈斯医疗科技有限公司,江苏苏州

出　　处：《电路与系统》2019年第2期16-22,共7页Open Journal of Circuits and Systems

基　　金：国家重点研发计划资助,2016YFC0800904。

摘　　要：本文通过实验分析从脉冲宽度和能量分辨率两个维度,对比Sensl的FC10035和FC10020的性能,为基于硅光电倍增管(SiPM)的闪烁体探测器提供设计参考,实验表明FC10020的脉冲宽度仅为200 nS,适合对于时间性能要求较高的应用场景,FC10035的能量分辨能力较好,适用于对能量分辨要求较高的应用场景;为提高响应的动态范围,降低Pileup的概率,设计了pole-zero (零极相消)电路,通过实验验证了零极相消电路对于缩短脉冲宽度的有效性。This paper compares the performancesof Sensl’s FC10035 and FC10020 from the two dimensions of pulse width andenergy resolution,and provides a reference for the design of scintillator detectorbased on SiPM.Experiments show that the pulse width of FC10020 is only 200 nS,which is suitable for application scenarios with high time performancerequirements.The energy resolution of FC10035 is suitable for applicationscenarios of high energy performance requirements.In order to improve thedynamic range of response and reduce the probability of pile up,a pole-zerocancellation circuit is designed,and the effectiveness of the zero-polecancellation circuit for shortening the pulse width is verified by experiments.

关 键 词：SIPM YSO晶体 能量分辨率 零极相消电路 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]