Afterpulse measurement of JUNO 20‑inch PMTs  

作　　者：Rong Zhao Nikolay Anfimov Yu Chen Hang Hu Jun Hu Xiao‑Lu Ji Denis Korablev Min Li Alexander Olshevskiy Zhao‑Yuan Peng Arseny Rybnikov Zhong‑Hua Qin Jun Wang Wei Wang Zhi‑Min Wang Björn Wonsak 

机构地区：[1]School of Physics,Sun Yat-sen University,Guangzhou 510275,China [2]Joint Institute for Nuclear Research,Dubna 141980,Russia [3]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]State Key Laboratory of Particle Detection and Electronics,Beijing 100049,China [6]Sino‑French Institute of Nuclear Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China [7]State Key Laboratory of Particle Detection and Electronic,Beijing 100049,China [8]Institut für Experimentalphysik,Universität Hamburg,Hamburg 20148,Germany

出　　处：《Nuclear Science and Techniques》2023年第1期136-145,共10页核技术（英文）

基　　金：supported by Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA10011100),Joint Institute of Nuclear Research (JINR),Russia and Lomonosov Moscow State University in Russia,joint Russian Science Foundation (RSF),DFG (Deutsche Forschungsgemeinschaft);National Natural Science Foundation of China (Nos. 12090062 and 12075087)

摘　　要：In this study,we present the large photomultiplier tube(PMT)afterpulse measurement results obtained from the Jiangmen underground neutrino observatory(JUNO)experiment.A total of 11 dynode-PMTs(R12860)from the Hamamatsu company(Hamamatsu Photonics K.K.(HPK))and 150 micro-channel plate PMTs(MCP-PMTs,GDB-6201)from the NNVT company(North Night Vision Technology Co.,Ltd.(NNVT))were tested.Subsequently,an afterpulse model was built according to the afterpulse time distribution and the probability of occurrence for these two types of PMTs.The average ratio of the total afterpulse charge with a delay between 0.5μs and 20μs to the primary pulse charge is∼5.7%(13.2%)for the tested MCPPMTs(dynode-PMTs).The JUNO experiment will deploy 20,01220-inch PMTs;this study will benefit detector simulation,event reconstruction,and data analysis regarding the JUNO experiment.

关 键 词：Afterpulse MCP-PMT JUNO Dynode-PMT 20-inch PMT 

分 类 号：O57[理学—粒子物理与原子核物理]