影响PSSD位置分辨因素的蒙特卡罗模拟  

Monte Carlo Simulation Affecting PSSD Position Resolution Factors

作　　者：宋海声[1] 董彩霞[1,2] 牛德芳 庄凯 李婷[2,3] 秦秀波 刘鹏浩[2] 杨雄斌 薛玉雄[5] Song Haisheng;Dong Caixia;Niu Defang;Zhuang Kai;Li Ting;Qin Xiubo;Liu Penghao;Yang Xiongbin;Xue Yuxiong(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou,Gansu 730000,China;Beijing Engineering Research Center of Radiographic Techniques and Equipment,Institute of High Energy Physics Chinese Academy of Sciences,Beijing 100049,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China;X Lab,the Second Academy of China Aerospace Science and Industry Corporation Limited,Beijing 100049,China;Science and Technology on Vacuum and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou,Gansu 730000,China)

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730000 [2]中国科学院高能物理研究所北京市射线成像技术与装备工程技术研究中心,北京100049 [3]中国科学院大学核科学与技术学院,北京100049 [4]中国航天科工集团有限公司第二研究院未来实验室,北京100049 [5]兰州空间技术物理研究所真空技术与物理国家级重点实验室,甘肃兰州730000

出　　处：《激光与光电子学进展》2021年第5期88-94,共7页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2016YFB0501303);国家重大科学仪器设备开发专项(2013YQ03062902);中国科学院战略性先导科技专项(A类)(XDA14020502);国家自然科学基金(11705224,11805213)。

摘　　要：以粒子与物质相互作用为理论基础,使用FLUKA蒙特卡罗模拟软件分析带电粒子的能量、入射角度、探测器厚度和灵敏面积等因素对位置灵敏硅探测器(PSSD)位置分辨能力的影响。模拟结果表明,随着电子能量的增加,探测器的位置分辨能力变差,当电子能量增大到可以穿过探测器时,位置分辨能力随着能量的增加逐渐提高;对于不同厚度的探测器来说,当电子能量完全沉积在探测器中时,探测器的位置分辨能力基本相同,当电子能量未能完全沉积在探测器中时,厚度较大的探测器位置分辨能力相对较差;探测器的面积有限会影响位置分辨能力;当电子以入射角度α≤45°入射探测器时,探测到的电子位置会沿着入射角度发生偏移,入射角度越大,偏移越明显。Based on the theoretical basis of the interaction between particles and matter,the influence of charged particle energy,incident angle,detector thickness,and sensitive area on position sensitive silicon detector(PSSD)position resolution is analyzed by using FLUKA Monte Carlo simulation software.The simulation results show that as the electron energy increases,the position resolution capability of the detector becomes worse.When the electron energy increases to pass through the detector,the position resolution capability gradually increases with the increase of energy.For the detectors of different thickness,when the electron energy is completely deposited in the detector,the position resolution ability of the detector is basically the same.When the electron energy is not completely deposited in the detector,the position resolution ability of the detector with a larger thickness is relatively poor.The limited area of the detector will affect the position resolution.When electrons enter the detector at an incident angleα≤45°,the detected electron position will shift.The larger the incident angle,the more obvious the shift.

关 键 词：探测器 带电粒子 FLUKA 电子 位置灵敏硅探测器 位置分辨 

分 类 号：TL814[核科学技术—核技术及应用]