温度箱内CLYC探测器温度平衡模拟仿真  

Temperature Balance Simulation of a CLYC Detector in the Temperature Chamber

作　　者：王琦标 代亨 庹先国 蒋刚[3] 杨红超 邓超 刘福乐 WANG Qi-biao;DAI Heng;TUO Xian-guo;JIANG Gang;YANG Hong-chao;DENG Chao;LIU Fu-le(School of Computer Science and Engineering,Sichuan University of Science&Engineering,Zigong Sichuan 643000,China;Artificial Intelligence Key Laboratory of Sichuan Province,Sichuan University of Science&Engineering,Zigong Sichuan 643000,China;College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu Sichuan 610059,China)

机构地区：[1]四川轻化工大学计算机科学与工程学院,四川自贡643000 [2]四川轻化工大学人工智能四川省重点实验室,四川自贡643000 [3]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《核电子学与探测技术》2021年第5期905-911,共7页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(41904162、42004151);四川省科技计划(2021JDRC0011、2021YFSF0058);人工智能四川省重点实验室开放基金(2020RZJ01)资助。

摘　　要：CLYC探测器性能受温度影响,需要使用温度箱对其温度响应进行实验测量。本文利用C0MS0L仿真软件构建CLYC探测器在温度箱内的三维流固耦合传热模型,模拟探测器在箱内上升/下降10t的温度平衡过程,预估探测器在箱内温度平衡时间。结果表明:温度箱加热/冷却90 min时,探测器达到箱体设定温度,CLYC晶体内部温度偏差小于0.01℃。实验以120min为温度平衡时间,测量-40~50℃下^(137)Csγ源的能谱,分析了温度对CLYC探测器能量分辨率和CLYC晶体发光产额的影响。The performance of the CLYC detector is affected by its temperature,hence,the experimental measurement of various temperatures should be conducted with a temperature chamber.To predict the temperature balance time of a CLYC detector in the temperature chamber,a three-dimensional fluid-structure coupled heat transfer model of a CLYC detector in the temperature chamber is built by using the simulation software COMSOL,and the dynamic temperature balance process of the detector rising/falling 10in the temperature chamber is simulated.The results show that when the temperature chamber is heated/cooled for 90 min,the detector reaches the set temperature of the chamber,and the temperature deviation in the CLYC crystal is less than 0.01℃ .After the detector’s temperature is equilibrium with a delay of 120 min,the energy spectrum of ^(137)Cs γ-ray source is measured at -40~50℃ .The effects of temperature on the energy resolution of the CLYC detector and the relative light yield of the CLYC crystal were analyzed.

关 键 词：CLYC 温度平衡 COMSOL 能量分辨率 相对光产额 

分 类 号：TL814[核科学技术—核技术及应用]