DArk Matter Particle Explorer (DAMPE) is a space-borne apparatus for detecting the high-energy cosmic-rays like electrons, γ-rays, protons and heavy-ions. Plastic Scintillator Detector (PSD) is the top-most sub-detector of the DAMPE. The PSD is designed to measure the charge of incident high-energy particles and it also serves as a veto detector for discriminating γ-rays from charged particles. In this paper, PSD on-orbit calibration procedure is described, which includes five steps of pedestal, dynode correlation, response to minimum-ionizing particles (MIPs), 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%.
@article{arxiv.1810.09901,
title = {Calibration of the DAMPE Plastic Scintillator Detector and its on-orbit performance},
author = {Meng Ding and Yapeng Zhang and Yong-Jie Zhang and Yuan-Peng Wang and Tie-Kuang Dong and Antonio De Benedittis and Paolo Bernardini and Fang Fang and Yao Li and Jie Liu and Peng-Xiong Ma and Zhi-Yu Sun and Valentina Gallo and Stefania Vitillo and Zhao-Min Wang and Yu-Hong Yu and Chuan Yue and Qiang Yuan and Yong Zhou and Yun-Long Zhang},
journal= {arXiv preprint arXiv:1810.09901},
year = {2019}
}
Comments
11 pages, 16 figures, Submitted to Research in Astronomy and Astrophysics (RAA)