Horizontal Position Reconstruction in PandaX-II
Abstract
Dual-phase noble-gas time projection chambers (TPCs) have improved the sensitivities for dark matter direct search in past decades. The capability of TPCs to reconstruct 3-D vertexes of keV scale recoilings is one of the most advantageous features. In this work, we develop two horizontal position reconstruction algorithms for the PandaX-II dark matter search experiment using the dual-phase liquid xenon TPC. Both algorithms are optimized by the Kr calibration events and use photon distribution of ionization signals among photomultiplier tubes to infer the positions. According to the events coming from the gate electrode, the uncertainties in the horizontal positions are 3.4 mm (3.9 mm) in the analytical (simulation-based) algorithm for an ionization signal with several thousand photon electrons in the center of the TPC
Cite
@article{arxiv.2106.08380,
title = {Horizontal Position Reconstruction in PandaX-II},
author = {Dan Zhang and Andi Tan and Abdusalam Abdukerim 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 Qing Lin and Huaxuan Liu and Jianglai Liu and Liqiang Liu and Xiaoying Lu and Wenbo Ma and Yugang Ma and Yajun Mao and Yue Meng and Parinya Namwongsa and Kaixiang Ni and Jinhua Ning and Xuyang Ning and Xiangxiang Ren and Nasir Shaheed and Changsong Shang and Guofang Shen and Lin Si 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 Xiang Xiao and Binbin Yan and Jijun Yang and Yong Yang and Chunxu Yu and Jumin Yuan and Ying Yuan and Xinning Zeng and Tao Zhang and Li Zhao and Qibin Zheng and Jifang Zhou and Ning Zhou and Xiaopeng Zhou},
journal= {arXiv preprint arXiv:2106.08380},
year = {2021}
}
Comments
18 pages, 11 figures