Projection of purification performance for the RELICS experiment

Jiachen Yu; Kaihang Li; Jingfan Gu; Chang Cai; Guocai Chen; Jiangyu Chen; Huayu Dai; Rundong Fang; Hongrui Gao; Fei Gao; Xiaoran Guo; Jiheng Guo; Chengjie Jia; Gaojun Jin; Fali Ju; Yanzhou Hao; Xu Han; Yang Lei; Meng Li; Minhua Li; Shengchao Li; Siyin Li; Tao Li; Qing Lin; Jiajun Liu; Sheng Lv; Yuanyuan Ren; Chuanping Shen; Lijun Tong; Yuhuang Wan; Jun Wang; Xiaoyu Wang; Wei Wang; Xiaoping Wang; Zihu Wang; Yuehuan Wei; Liming Weng; Xiang Xiao; Lingfeng Xie; Jijun Yang; Litao Yang; Long Yang; Jingqiang Ye; Qian Yue; Yuyong Yue; Tianyuan Zha; Bingwei Zhang; Honghui Zhang; Zhicai Zhang; Yifei Zhao

arXiv · 2604.12572

Projection of purification performance for the RELICS experiment

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Abstract

The RELICS (REactor neutrino LIquid xenon Coherent elastic Scattering) experiment employs a dual-phase liquid xenon time projection chamber to search for Coherent Elastic Neutrino-Nucleus Scattering (CE$ν$NS) induced by reactor neutrinos. To detect these sub-keV nuclear recoils and minimize signal attenuation, it is critical to maintain a sufficiently low impurity concentration in the detector. This work presents a comprehensive purity evolution model developed to describe impurity migration inside the detector. Utilizing measured material outgassing rates as input parameters, the model incorporates non-uniform transport mechanisms of the impurities, including circulation, vaporization, and condensation. The model is validated using data from a dedicated prototype detector. Based on this validated model, projections for the purification performance of the upcoming RELICS-10 and RELICS-50 detectors are provided.

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Jiachen Yu, Kaihang Li, Jingfan Gu, Chang Cai, Guocai Chen, Jiangyu Chen, Huayu Dai, Rundong Fang, Hongrui Gao, Fei Gao, Xiaoran Guo, Jiheng Guo, Chengjie Jia, Gaojun Jin, Fali Ju, Yanzhou Hao, Xu Han, Yang Lei, Meng Li, Minhua Li, Shengchao Li, Siyin Li, Tao Li, Qing Lin, Jiajun Liu, Sheng Lv, Yuanyuan Ren, Chuanping Shen, Lijun Tong, Yuhuang Wan, Jun Wang, Xiaoyu Wang, Wei Wang, Xiaoping Wang, Zihu Wang, Yuehuan Wei, Liming Weng, Xiang Xiao, Lingfeng Xie, Jijun Yang, Litao Yang, Long Yang, Jingqiang Ye, Qian Yue, Yuyong Yue, Tianyuan Zha, Bingwei Zhang, Honghui Zhang, Zhicai Zhang, Yifei Zhao. 2026-04-14. Projection of purification performance for the RELICS experiment. https://arxiv.org/abs/2604.12572

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