HIRFL-CSR外靶实验终端Veto探测器的刻度  

Calibration of the Veto Detector at ETF in HIRFL-CSR

作　　者：刘拓琦 唐述文[1,2] 孙宇 余玉洪 方芳[1,2] 王世陶 章学恒[1,2] 孙志宇 卢奋华[1,2] 傅圣威 李治垚[1,2] 魏啸宝 徐颖锋[1,2] LIU Tuoqi;TANG Shuwen;SUN Yu;YU Yuhong;FANG Fang;WANG Shitao;ZHANG Xueheng;SUN Zhiyu;LU Fenhua;FU Shengwei;LI Zhiyao;WEI Xiaobao;XU Yingfeng(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Engineering Research Center of Nuclear Technology Application(East China University of Technology),Ministry of Education,Nanchang 330013,China;School of Nuclear Science and Engineering,East China University of Technology,Nanchang 330013,China;Henan Normal University,Xinxiang 453007,Henan,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049 [3]东华理工大学核技术应用教育部工程研究中心,南昌330013 [4]东华理工大学核科学与工程学院,南昌330013 [5]河南师范大学,河南新乡453007

出　　处：《原子核物理评论》2024年第1期453-459,共7页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(U2031206,12273086,12375186,U1832122);江西省核技术应用教育部工程研究中心资助项目(HJSJYB2022-3)。

摘　　要：使用宇宙射线对兰州重离子加速器冷却储存环(HIRFL-CSR)外靶实验终端(ETF)的Veto探测器开展了刻度工作,工作主要分为位置刻度与时间刻度两部分。位置刻度可给出粒子在探测器上的击中位置,时间刻度则能为粒子在探测器上击中时刻的探测建立统一标准。这些信息是剔除入射到中子墙探测器的带电粒子事件的依据,可为中子墙探测器物理目标的实现提供重要支持。在刻度过程中,得到了Veto探测器的位置分辨半高全宽(FWHM)为2.53 cm,所有单元条时间归一后的时间分辨FWHM为1.09 ns。Cosmic rays are used for the calibration of the Veto detector at ETF(External Target Facility)in HIRFL-CSR(Cooling Storage Ring of Heavy Ion Research Facility in Lanzhou).The work primarily involves two parts:position calibration and time calibration.Position calibration can provide the precise location of particle hits on the Veto detector,while time calibration can establish a uniform standard for the detection of the moment when a particle hits the detector.The information of hit position and hit time is crucial for identifying and excluding events of charged particles incident on the neutron wall detector,providing important support for the achievement of the physical objectives of the neutron wall detector.During the calibration process,the Veto detector's position resolution FWHM(Full Width at Half Maximum),was determined to be 2.53 cm,and the time resolution FWHM,after the normalization of the times of all unit bars,was found to be 1.09 ns.

关 键 词：Veto探测器 刻度 宇宙射线 位置分辨 时间分辨 

分 类 号：O571.53[理学—粒子物理与原子核物理]