PandaX-4T实验的低放射性材料筛选与本底控制
仪器与探测器
2022-06-29 v2 高能物理 - 实验
摘要
PandaX-4T是在中国锦屏地下实验室采用双相TPC技术吨量级暗物质直接探测实验。针对PandaX-4T的材料筛选，已开发并应用了多种超低本底技术，包括HPGe伽马能谱、ICP-MS、NAA、氡析出测量系统、氪测量站和α探测系统。选用低本底材料组装探测器。研究了表面处理工艺以进一步抑制放射性本底。结合测量结果和蒙特卡洛模拟，估计PandaX-4T在1-25 keV能量区间的总材料本底率为电子反冲(9.9 1.9) mDRU，核反冲(2.8 0.6) mDRU。此外，探测器中Kr估计为<8 ppt。
引用
@article{arxiv.2112.02892,
title = {Low Radioactive Material Screening and Background Control for the PandaX-4T Experiment},
author = {Zhicheng Qian and Lin Si and Abdusalam Abdukerim and Zihao Bo and Wei Chen and Xun Chen and Yunhua Chen and Chen Cheng and Yunshan 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 Jinrong He and Di Huang and Yanlin Huang and Zhou Huang and Ruquan Hou and Xiangdong Ji and Yonglin Ju and Chenxiang Li and Mingchuan Li and Shu Li and Shuaijie Li and Qing Lin and Jianglai Liu and Xiaoying Lu and Lingyin Luo and Wenbo Ma and Yugang Ma and Yajun Mao and Yue Meng and Xuyang Ning and Ningchun Qi and Xiangxiang Ren and Nasir Shaheed and Changsong Shang and Guofang Shen and Wenliang Sun and Andi Tan and Yi Tao and Anqing Wang and Meng Wang and Qiuhong Wang and Shaobo Wang and Siguang Wang and Wei Wang and Xiuli Wang and Zhou Wang and Mengmeng Wu and Weihao Wu and Jingkai Xia and Mengjiao Xiao and Xiang Xiao and Pengwei Xie and Binbin Yan and Xiyu Yan and Jijun Yang and Yong Yang and Chunxu Yu and Jumin Yuan and Ying Yuan and Dan Zhang and Minzhen Zhang and Peng Zhang and Tao Zhang and Li Zhao and Qibin Zheng and Jifang Zhou and Ning Zhou and Xiaopeng Zhou and Yong Zhou},
journal= {arXiv preprint arXiv:2112.02892},
year = {2022}
}
备注
19 pages, 7 figures, 12 tables