BEGe探测器波形模拟研究平台开发与应用  

Development and Application of Pulse Shape Simulation Research Platform for BEGe Detectors

作　　者：米宇豪 曾志[2,3] 马豪[2,3] 程建平 MI Yu-hao;ZENG Zhi;MA Hao;CHENG Jian-ping(Nuclear and Radiation Safety Center,MEE,Beijing 100082,China;Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Key Laboratory of Particle&Radiation Imaging(Tsinghua University),Ministry of Education,Beijing 100084,China;Beijing Normal University,Beijing 100875,China)

机构地区：[1]生态环境部核与辐射安全中心,北京100082 [2]清华大学工程物理系,北京100084 [3]粒子技术与辐射成像教育部重点实验室(清华大学),北京100084 [4]北京师范大学,北京100875

出　　处：《核电子学与探测技术》2019年第6期723-729,共7页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(U1865205)资助。

摘　　要：基于GEANT4软件和MAJORANA波形模拟函数库,开发了BEGe探测器的波形模拟研究平台。用该研究平台评估了A/E方法和上升时间比方法用于γ谱分析性能优化的效果,在假设情形下分别可以将661 keVγ射线对应的MDA优化到原来的约0.6倍、0.72倍。作为波形甄别研究的工具,该波形模拟研究平台可用于波形甄别方法的机理研究、效果评估,可应用到其他类型高纯锗探测器的波形甄别研究中。A pulse shape simulation(PSS)research platform for BEGe detectors was developed,based on the GEANT4 Monte Carlo simulation software and the PSS function library from MAJORANA.The performance optimization effects on gamma spectrometry by A/E and rise-time ratio PSD methods were evaluated,and the MDA for the 661 keVγwas decreased to about 0.6 and 0.72 times the original value respectively.As the tool for PSD study,the PSS research platform can help with the mechanism study and performance evaluation of PSD methods,and be applied to PSD study for other types of HPGe detectors.

关 键 词：BEGe 波形模拟 波形甄别 Γ谱分析 

分 类 号：TL814[核科学技术—核技术及应用]