Study of linearity of LYSO crystal for the high energy cosmic radiation detection(HERD)facility  

作　　者：Zheng Quan Zhigang Wang Ming Xu Yongwei Dong Junjing Wang Guangpeng An Xin Liu Tianwei Bao Li Zhang RuijieWang Junguang Lv Bobing Wu Shuangnan Zhang 

机构地区：[1]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,CAS,Beijing 100049,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,CAS,Beijing 100049,China

出　　处：《Radiation Detection Technology and Methods》2017年第1期21-28,共8页辐射探测技术与方法（英文）

基　　金：This research was supported by National Natural Science Foundation of China,Grant No.11327303,11473028 and 11675196;International Science and Technology Cooperation Program of China,Grant No.2015DFA10140;Interdisciplinary Innovation Team Project of Chinese Academy of Sciences(Research Team of The High Energy cosmic-Radiation Detection);Qianren start-up,Grant No.292012312D1117210;Strategic Pioneer Program in Space Science,Chinese Academy of Sciences,Grant No.XDA04075600;Youth Innovation Promotion Association of CAS,Grant No.2014009.The authors would like to thank Dr.Sun Jianchao,Dr.Zhang Xuan,Dr.Zhang Xiaofeng and Dr.Ning Zhe for their support.

摘　　要：The high energy cosmic-radiation detection(HERD)facility is a space mission designed for detecting cosmic ray(CR)electrons,γ-rays up to tens of TeV and CR nuclei from proton to iron up to several PeV.The main instrument of HERD is a 3-D imaging calorimeter(CALO)composed of nearly ten thousand lutetium yttrium orthosilicate(LYSO,with cerium doping)crystal cubes.A large dynamic range of single HERD CALO Cell(HCC)is necessary to achieve HERD’s PeV observation objectives,which means that the response of HCC should maintain a good linearity from minimum ionizing particle(MIP)calibration to PeV shower maximum.In order to study the linearity ofHCC over such a large energy range,a beam test has been implemented at the E2 and E3 beam lines of BEPC.High intensity pulsed electron beam provided by E2 line is used for producing high energy density within HCC;π^(+)/proton provided by E3 line are used forHCCcalibration.The results showthat no saturation effect occurs and the linearity ofHCCis better than 10%from 30 MeV(1MIP)to 1.1×10^(3) TeV(energy density is 93 TeV/cm^(3)),which can meet the requirement mentioned above.

关 键 词：HERD CALORIMETER LYSO LINEARITY Beam test 

分 类 号：O57[理学—粒子物理与原子核物理]