论文标题
罕见活动搜索的大型，低阈值蓝宝石探测器
Large-mass, low-threshold sapphire detector for rare event searches
论文作者
论文摘要
低质量核电逆物质暗物质和相干 - 弹性 - 核核碎片（CENN）搜索在选择超低阈值和大质量探测器方面面临着类似的挑战。我们报告了首先使用的100 g单晶蓝宝石探测器设计的实验结果，直径为76毫米，厚度为4 mm。该检测器的设计对低能稀有相互作用非常敏感，目的是研究暗物质相位空间的低质量区域并在反应堆位点寻找CENN。蓝宝石是氧化铝（AL2O3）的晶体，与其他检测器材料（如也应属于也应），由于其较低的原子质量（例如锗和硅），由于其较低的原子质量，因此是轻质自旋依赖性暗物质搜索实验的良好候选者。使用德克萨斯A＆M大学测试设施收集的数据，我们能够从校准来源解决低能线，并估计我们新开发的蓝宝石检测器的基线后坐力分辨率为18 eV。这些探测器以0 V的方式操作，可以使用声子辅助检测提供无淬火的低阈值操作。
Low mass nuclear recoil dark matter and coherent-elastic-neutrino-nucleus-scattering (CENNS) searches confront similar challenges in choosing ultra-low threshold and large-mass detectors. We report experimental results from the first-of-its-kind 100 g single-crystal sapphire detector design with a diameter of 76 mm and thickness of 4 mm. The detector is designed to be sensitive for low-energy rare interactions with an intention to investigate the low mass region of dark matter phase-space and search for CENNS at the reactor site. Sapphire is a crystal of aluminum oxide (Al2O3) and has been found to be a good candidate for light mass spin-dependent dark matter search experiments due to its lower atomic mass compared to other detector materials such as germanium and silicon. Using the data collected from the test facility at Texas A&M University, we were able to resolve low energy lines from calibration sources and estimated that our newly developed sapphire detector has a baseline recoil energy resolution of 18 eV. These detectors are operated at 0 V with the phonon-assisted detection providing a quenching-free low-threshold operation.
