Anger-camera型中子探测器位置分辨性能研究  

Study on Position Resolution of Neutron Detector Based on Anger-camera

作　　者：蔡小杰 黄畅 唐彬[3,4] 王小胡 CAI Xiaojie;HUANG Chang;TANG Bin;WANG Xiaohu(Fundamental Science on Nuclear Waste and Environmental Security Laboratory,Southwest University of science and technology,Mianyang of Sichuan Prov.621010,China;Lanzhou University,Lanzhou of Gansu Prov.730000,China;Dongguan branch,Institute of high energy physics,Chinese Academy of Sciences,Dongguan of Guangdong Prov.523803,China;Spallation Neutron Source Science Center,Dongguan of Guangdong Prov.523803,China;Center for Advanced Material Diagnostic Technology,and College of Engineering Physics,Shenzhen Technology University,Shenzhen of Guangdong Prov.518118,China)

机构地区：[1]西南科技大学,核废物与环境安全国防重点学科实验室,四川绵阳621010 [2]兰州大学,甘肃兰州730000 [3]中国科学院高能物理研究所东莞分部,广东东莞523803 [4]散裂中子源科学中心,广东东莞523803 [5]深圳技术大学,先进材料测试技术研究中心/工程物理学院,广东深圳518118

出　　处：《核科学与工程》2024年第1期233-242,共10页Nuclear Science and Engineering

基　　金：广东省自然科学基金(2020B1515120025);国家自然基金面上项目(11975255,11875273)。

摘　　要：本文描述用于中国散裂中子源(CSNS)谱仪上,基于Anger-camera位置重建原理的闪烁体中子探测器样机位置分辨性能研究。在BL20中子测试束线上完成了探测器关键器件性能测试,包括硅光电倍增管(Silicon Photon Multiplier Tube, SiPM)阵列位置重建能力测试和耐辐照特性研究,同时对不同光导厚度下探测器位置分辨能力开展测试,发现基于SiPM阵列读出的Anger-camera型闪烁体中子探测器采用300μm的^(6)LiF/ZnS(Ag)闪烁屏和5 mm空气作为光导,其位置分辨最佳可达到0.6 mm。该探测器样机后期可通过大面积阵列拼接,实现中子衍射实验对大面积高位置分辨探测器的需求,其成功研制为加快谱仪建设提供有力的技术支撑。This paper describes the position resolution performance of the prototype of Anger-camera scintillator neutron detector used in Chinese spallation neutron source(CSNS)spectrometer.The performance tests of the key devices of the detector are completed on the neutron test beam line BL20 in CSNS,including the position reconstruction ability and the radiation resistance of the Silicon Photon Multiplier tube(SiPM)array.The position resolution of the detector with different photoconductive thickness is tested.The Anger-Camera scintillator neutron detector prototype with 300μm thickness ^(6)LiF/ZnS(Ag)scintillation screen and 5 mm thickness air photoconductor obtained the best position resolution as 0.6 mm in the later stage,the detector can achieve the demand of large area high position resolution detector for neutron diffraction experiment by array stitching.The successful development of the detector provides favorable technical support for the future construction of the spectrometer.

关 键 词：Anger-camera位置重建 闪烁体中子探测器 SiPM阵列 位置分辨 SiPM耐辐照特性 

分 类 号：TL48[核科学技术—核技术及应用]