光电探测器件的单光电子谱数据获取  

Data acquisition system for single photoelectron spectra of photoelectric detector

作　　者：高峰[1,2,3] 钱森 宁哲[1,3] 王志刚 马丽双 朱瑶[1,5] 陈鹏宇 尹士玉 王治乐 GAO Feng;QIAN Sen;NING Zhe;WANG Zhigang;MALishuang;ZHU Yao;CHEN Pengyu;YIN Shiyu;WANG Zhile(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Particle Detection and Electronics,Beijing 100049,China;School of Mechanical and Material Engineering,North China University of Technology,Beijing 100144,China;Harbin Institute of Technology,Harbin 150000,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]中国科学院大学,北京100049 [3]核探测与核电子学国家重点实验室,北京100049 [4]北方工业大学,北京100144 [5]哈尔滨工业大学,哈尔滨150000

出　　处：《核技术》2019年第10期51-58,共8页Nuclear Techniques

基　　金：国家自然科学基金(No.11475209、No.11675205、No.11611130020)资助~~

摘　　要：在常规光电器件性能研究中,测试光电倍增管(Photomultiplier Tube,PMT)的单光电子谱(Single Photoelectron Spectra,SPE)系统一般是采用基于VME和NIM机箱的电荷数字转换器(Charge-to-Digital-Converter,QDC)和时间数字转换器(Time-to-Digital-Converter,TDC)电子学插件等,而测试硅光电倍增管(Silicon Photomultiplier,SiPMT)的系统则倾向于使用基于快速模数转换器(Flash-Analog-to-Digital-Converter,FADC)的便携式桌面机电子学。本文基于相同型号的20吋PMT和SiPMT对比测试,通过比较PMT的性能参数(增益、峰谷比、相对探测效率和能量分辨率等)测试结果,从硬件配置和软件分析等方面深入比较两套数据获取系统的异同,明确使用FADC的一些必要操作过程和数据分析方法。实验结果表明:便携式的FADC系统,可以和基于VME机箱的QDC系统一样,可实现对PMT工作于脉冲模式的阳极信号精确测试,但性能各有优劣。[Background]There are two methods to test the single photoelectron spectra(SPE)performance of the photomultiplier tubes(PMT)and Silicon Photomultiplie(SiPMT)with either the charge-to-digital-converter(QDC)module or flash amplitude-to-digital-converter(FADC)module.[Purpose]This study aims to investigate the difference of data acquisition between FADC and QDC for single photoelectron spectra(SPE)of photoelectric detector.[Methods]Single photoelectron spectra(SPE)of 20-inch PMTs of the same model,as well as SiPMT of same mode,were measured under the same testing conditions using FADC module and QDC module.Gain,signal events,detection efficiency,the ratio of peak to valley and energy resolution were compared in details.[Results]Both QDC and FADC can be used as data acquisition tools for PMT SPE test,but each has its own advantages and disadvantages.[Conclusions]According to the system's specific demand for photoelectric detector,either of the two modules could be chosen.

关 键 词：光电倍增管 硅光电倍增管 单光电子谱 电荷数字转换器 快速模数转换器 

分 类 号：TL813[核科学技术—核技术及应用] TL82