{"paper":{"title":"Low Radioactive Material Screening and Background Control for the PandaX-4T Experiment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Abdusalam Abdukerim, Andi Tan, Anqing Wang, Binbin Yan, Changbo Fu, Changda He, Changsong Shang, Chen Cheng, Chenxiang Li, Chunxu Yu, Dan Zhang, Deqing Fang, Di Huang, Guofang Shen, Jianglai Liu, Jifang Zhou, Jijun Yang, Jingkai Xia, Jinrong He, Jumin Yuan, Karl Giboni, Ke Han, Lingyin Luo, Linhui Gu, Lin Si, Lisheng Geng, Li Zhao, Mengjiao Xiao, Mengmeng Wu, Mengting Fu, Meng Wang, Mingchuan Li, Minzhen Zhang, Nasir Shaheed, Ningchun Qi, Ning Zhou, Pengwei Xie, Peng Zhang, Qibin Zheng, Qing Lin, Qiuhong Wang, Ruquan Hou, Shaobo Wang, Shuaijie Li, Shu Li, Siguang Wang, Tao Zhang, Wei Chen, Weihao Wu, Wei Wang, Wenbo Ma, Wenliang Sun, Xiangdong Ji, Xiangxiang Ren, Xiang Xiao, Xiangyi Cui, Xiaopeng Zhou, Xiaoying Lu, Xiuli Wang, Xiyu Yan, Xun Chen, Xuyang Ning, Xuyuan Guo, Yajun Mao, Yanlin Huang, Yingjie Fan, Ying Yuan, Yi Tao, Yonglin Ju, Yong Yang, Yong Zhou, Yue Meng, Yugang Ma, Yunhua Chen, Yunshan Cheng, Zhicheng Qian, Zhou Huang, Zhou Wang, Zihao Bo","submitted_at":"2021-12-06T09:29:07Z","abstract_excerpt":"PandaX-4T is a ton-scale dark matter direct detection experiment using a dual-phase TPC technique at the China Jinping Underground Laboratory. Various ultra-low background technologies have been developed and applied to material screening for PandaX-4T, including HPGe gamma spectroscopy, ICP-MS, NAA, radon emanation measurement system, krypton assay station, and alpha detection system. Low background materials were selected to assemble the detector. Surface treatment procedures were investigated to further suppress radioactive background. Combining measured results and Monte Carlo simulation, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.02892","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.02892/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}