Internal Calibration of the PandaX-II Detector with Radon Gaseous Sources
Abstract
We have developed a low-energy electron recoil (ER) calibration method with Rn for the PandaX-II detector. Rn, emanated from natural thorium compounds, was fed into the detector through the xenon purification system. From 2017 to 2019, we performed three dedicated calibration campaigns with different radon sources. We studied the detector response to , , and particles with focus on low energy ER events. During the runs in 2017 and 2018, the amount of radioactivity of Rn were on the order of 1\% of that of Rn and thorium particulate contamination was negligible, especially in 2018. We also measured the background contribution from Pb for the first time in PandaX-II with the help from a Rn injection. Calibration strategy with Rn and Rn will be implemented in the upcoming PandaX-4T experiment and can be useful for other xenon-based detectors as well.
Keywords
Cite
@article{arxiv.2006.09311,
title = {Internal Calibration of the PandaX-II Detector with Radon Gaseous Sources},
author = {Wenbo Ma and Abdusalam Abdukerim and Zihao Bo and Wei Chen and Xun Chen and Yunhua Chen and Chen Cheng and Xiangyi Cui and Yingjie Fan and Deqing Fang and Changbo Fu and Mengting Fu and Lisheng Geng and Karl Giboni and Linhui Gu and Xuyuan Guo and Ke Han and Changda He and Shengming He and Di Huang and Yan Huang and Yanlin Huang and Zhou Huang and Xiangdong Ji and Yonglin Ju and Shuaijie Li and Huaxuan Liu and Jianglai Liu and Yugang Ma and Yajun Mao and Yue Meng and Kaixiang Ni and Jinhua Ning and Xuyang Ning and Xiangxiang Ren and Changsong Shang and Lin Si and Guofang Shen and Andi Tan and Anqing Wang and Hongwei Wang and Meng Wang and Qiuhong Wang and Siguang Wang and Wei Wang and Xiuli Wang and Zhou Wang and Mengmeng Wu and Shiyong Wu and Weihao Wu and Jingkai Xia and Mengjiao Xiao and Pengwei Xie and Binbin Yan and Jijun Yang and Yong Yang and Chunxu Yu and Jumin Yuan and Ying Yuan and Jianfeng Yue and Xinning Zeng and Dan Zhang and Tao Zhang and Li Zhao and Qibin Zheng and Jifang Zhou and Ning Zhou and Xiaopeng Zhou},
journal= {arXiv preprint arXiv:2006.09311},
year = {2021}
}
Comments
14 pages, 8 figures. published in JINST