Silicon photomultiplier based scintillator thermal neutron detector for China Spallation Neutron Source(CSNS)  

作　　者：岳秀萍 朱志甫 唐彬 黄畅 于潜 陈少佳 王修库 许虹 周诗慧 蔡小杰 杨浩 万志勇 孙志嘉 刘云涛 Xiu-Ping Yue;Zhi-Fu Zhu;Bin Tang;Chang Huang;Qian Yu;Shao-Jia Chen;Xiu-Ku Wang;Hong Xu;Shi-Hui Zhou;Xiao-Jie Cai;Hao Yang;Zhi-Yong Wan;Zhi-Jia Sun;Yun-Tao Liu(Engineering Research Center of Nuclear Technology Application,East China University of Technology,Ministry of Education,Nanchang 330013,China;Spallation Neutron Source Science Center,Dongguan 523803,China;Zhengzhou University of Technology,Zhengzhou 450044,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Lanzhou University,Lanzhou 730000,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Zhengzhou University,Zhengzhou 450001,China;Southwest University of Science and Technology,Mianyang 621002,China)

机构地区：[1]Engineering Research Center of Nuclear Technology Application,East China University of Technology,Ministry of Education,Nanchang 330013,China [2]Spallation Neutron Source Science Center,Dongguan 523803,China [3]Zhengzhou University of Technology,Zhengzhou 450044,China [4]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [5]Lanzhou University,Lanzhou 730000,China [6]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [7]Zhengzhou University,Zhengzhou 450001,China [8]Southwest University of Science and Technology,Mianyang 621002,China

出　　处：《Chinese Physics B》2023年第9期35-41,共7页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.11875273,U1832111,61964001,and 12275049);the Science Foundation of Guangdong Province of China(Grant No.2020B1515120025);the Neutron Physics Laboratory Funding of China Academy of Engineering Physics(Grant No.2018BC03);the General Project of Jiangxi Province Key Research and Development Program(Grant No.20212BBG73012);the Key Scientific Research Projects of Henan Higher Education Institutions(Grant Nos.23A490002 and 24A490001);the Engineering Research Center of Nuclear Technology Application(Grant No.HJSJYB2021-4)。

摘　　要：The energy-resolved neutron imaging spectrometer(ERNI)will be installed in 2022 according to the spectrometer construction plan of the China Spallation Neutron Source(CSNS).The instrument requires neutron detectors with the coverage area of approximately 4 m^(2)in 5°-170°neutron diffraction angle.The neutron detection efficiency needs to be better than 40%at 1 A neutron wavelength.The spatial resolution should be better than 3 mm×50 mm in the horizontal and vertical directions respectively.We develop a one-dimensional scintillator neutron detector which is composed of the^(6)Li F/Zn S(Ag)scintillation screens,the wavelength-shifting fiber(WLSF)array,the silicon photomultipliers(Si PMs),and the self-designed application-specific integrated circuit(ASIC)readout electronics.The pixel size of the detector is designed as 3 mm×50 mm,and the neutron-sensitive area is 50 mm×200 mm.The performance of the detector prototype is measured using neutron beam 20#of the CSNS.The maximum counting rate of 247 k Hz,and the detection efficiency of63%at 1.59 A are obtained.The test results show that the performance of the detector fulfills the physical requirements of the ERNI under construction at the CSNS.

关 键 词：neutron detector silicon photomultipliers(SiPMs) ^(6)LiF/ZnS(Ag) China Spallation Neutron Source(CSNS) 

分 类 号：TL816.3[核科学技术—核技术及应用]