Digitization modeling of a CGEM detector based on Garfield++simulation  

作　　者：Jing-Yi Zhao Nan-Nan Miao Ling-Hui Wu Liang-Liang Wang Tong Sun Zhen Huang Ryan Mitchell Wei-Guo Li Huai-Min Liu Xin-Chou Lou Sheng-Sen Sun Ye Yuan Yao Zhang 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Indiana University,Bloomington,IN 47405,USA [4]University of Texas at Dallas,Richardson,TX 75083,USA

出　　处：《Radiation Detection Technology and Methods》2020年第2期174-181,共8页辐射探测技术与方法（英文）

基　　金：Funding was provided by National Natural Sci-ence Foundation of China(NSFC)under Contracts Nos.11575222,11475208,11775245,11335009,U1832204,and 11521505;National Key Basic Research Program of China under Contract No.2015CB856706;Chinese Academy of Sciences(CAS)President’s International Fellowship Initiative underContract No.2018PM0004;European Com-mission under Contract No.H2020-MSCA-RISE-2014;National 1000Talents Program of China,and U.S.Department of Energy under Con-tract No.DE-FG02-05ER41374.

摘　　要：Background The Cylindrical Gas ElectronMultiplier Inner Tracker(CGEM-IT)is one of the candidates for the replacement of the current BESIII inner drift chamber,which has developed serious aging effects due to beam-related backgrounds.Purpose To build a full digitization model,it is necessary to understand the electron drift behavior and signal induction.Methods A simulation study based on Garfield++and ANSYS software has been performed.Results Parameters describing the Lorentz angle,diffusion effect,drift time,multiplication,and induction are obtained from the Garfield++simulation.Based on these results,a preliminary digitization model is implemented in the BESIII offline software system.

关 键 词：CGEM-IT gain Garfield++ Lorentz angle DIFFUSION INDUCTION 

分 类 号：TL81[核科学技术—核技术及应用]