Calibration of the DAMPE Plastic Scintillator Detector and its on-orbit performance  

作　　者：Meng Ding Ya-Peng Zhang Yong-Jie Zhang Yuan-Peng Wang Tie-Kuang Dong Antonio De Benedittis Paolo Bernardini Fang Fang Yao Li Jie Liu Peng-Xiong Ma Zhi-Yu Sun Valentina Gallo Stefania Vitillo Zhao-Min Wang Yu-Hong Yu Chuan Yue Qiang Yuan Yong Zhou Yun-Long Zhang 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences [4]School of Astronomy and Space Science, University of Science and Technology of China [5]Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Lecce [6]Dipartimento di Matematica e Fisica E.De Giorgi, Universit`a del Salento [7]Department of Nuclear and Particle Physics, University of Geneva [8]Gran Sasso Science Institute [9]INFN Laboratori Nazionali del Gran Sasso [10]Department of Modern Physics, University of Science and Technology of China

出　　处：《Research in Astronomy and Astrophysics》2019年第3期145-154,共10页天文和天体物理学研究（英文版）

基　　金：funded by the National Key Research and Development Program of China (2016YFA0400201);supported by the National Natural Science Foundation of China (11673047,11673075, 11303107, U1738127 and U1738205)

摘　　要：The DArk Matter Particle Explorer(DAMPE) is a space-borne apparatus for detecting the highenergy cosmic-ray-like electrons, γ-rays, protons and heavy ions. The Plastic Scintillator Detector(PSD)is the top-most sub-detector of the DAMPE. The PSD is designed to measure the charge of incident highenergy particles and it also serves as a veto detector for discriminating γ-rays from charged particles. In this paper, a PSD on-orbit calibration procedure is described, which includes the five steps of pedestal, dynode correlation, response to minimum-ionizing particles, light attenuation function and energy reconstruction.A method for reconstructing the charge of incident high energy cosmic-ray particles is introduced. The detection efficiency of each PSD strip is verified to be above 99.5%; the total efficiency of the PSD for charged particles is above 99.99%.The DArk Matter Particle Explorer(DAMPE) is a space-borne apparatus for detecting the highenergy cosmic-ray-like electrons, γ-rays, protons and heavy ions. The Plastic Scintillator Detector(PSD)is the top-most sub-detector of the DAMPE. The PSD is designed to measure the charge of incident highenergy particles and it also serves as a veto detector for discriminating γ-rays from charged particles. In this paper, a PSD on-orbit calibration procedure is described, which includes the five steps of pedestal, dynode correlation, response to minimum-ionizing particles, light attenuation function and energy reconstruction.A method for reconstructing the charge of incident high energy cosmic-ray particles is introduced. The detection efficiency of each PSD strip is verified to be above 99.5%; the total efficiency of the PSD for charged particles is above 99.99%.

关 键 词：COSMIC RAY instrumentation: DAMPE charge measurement plastic scintillator detector CALIBRATION 

分 类 号：P[天文地球]