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arXiv 2602.05161hep-ex
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LiF实验:keV尺度中性子搜索

LiFE-SNS: LiF Experiment for keV-scale Sterile Neutrino Search

Department of Physics and Astronomy, Seoul National University(首尔大学物理与天文学系);IBS School, University of Science and Technology (UST)(韩国科学技术院基础科学研究院);Center for Underground Physics, Institute for Basic Science (IBS)(基础科学研究所地下物理中心);Korea Research Institute of Standards and Science(韩国计量科学研究院)
Y. C. Lee, J. S. Chung, S. H. Choi, J. A. Jeon, D. H. Hwang, C. S. Kang, H. B. Kim, Ho Jong Kim, Hyeok Jun Kim, H. L. Kim, M. B. Kim, S. C. Kim, S. K. Kim, W. T… 展开作者

Y. C. Lee, J. S. Chung, S. H. Choi, J. A. Jeon, D. H. Hwang, C. S. Kang, H. B. Kim, Ho Jong Kim, Hyeok Jun Kim, H. L. Kim, M. B. Kim, S. C. Kim, S. K. Kim, W. T. Kim, Y. H. Kim, Y. M. Kim, D. H. Kwon, D. Y. Lee, H. J. Lee, S. H. Lee, S. W. Lee, H. S. Lim, H. S. Park, K. R. Woo, J. Y. Yang, Y. S. Yoon

AI总结:

LiFE-SNS通过精确测量氚β光谱探测中性子,采用LiF晶体和磁微 calorimeters进行热学计数,实现keV质量区域的高灵敏度测量。

摘要:

LiF实验用于keV尺度中性子搜索(LiFE-SNS)旨在通过氚β光谱的精确测量来探测中性子。氚核通过${}^{6}\mathrm{Li}(n,α){}^{3}\mathrm{H}$反应产生并嵌入LiF晶体中,允许通过在毫开尔文温度下运行的磁微 calorimeters(MMCs)进行热学计数检测β衰变。我们介绍了探测器配置、背景研究和校准方法,包括位置依赖响应的建模和探测器非线性的表征。我们还讨论了与中性子搜索相关的潜在系统误差来源。尽管LiFE-SNS的第一阶段已完成,本文重点在于校准和探测器表征。所取得的性能使得精确的β光谱测量成为可能,预计灵敏度表明在keV质量区域具有竞争力。

英文摘要:

The LiF Experiment for keV-scale Sterile Neutrino Search (LiFE-SNS) aims to probe sterile neutrinos through precision measurements of the tritium $β$ spectrum. Tritium nuclei are produced and embedded in LiF crystals via the ${}^{6}\mathrm{Li}(n,α){}^{3}\mathrm{H}$ reaction, allowing thermal calorimetric detection of $β$ decays with magnetic microcalorimeters (MMCs) operated at millikelvin temperatures. We present the detector configuration, background studies, and calibration method, including modeling of position-dependent response and characterization of detector nonlinearity. We also discuss potential sources of systematic uncertainty relevant to the sterile-neutrino search. While the first phase of LiFE-SNS has been completed, this paper focuses on calibration and detector characterization. The achieved performance enables precision $β$-spectrum measurements, and projected sensitivities indicate competitive reach in the keV mass region.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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