论文标题
Stawell地下物理实验室的Saber South South实验
The SABRE South Experiment at the Stawell Underground Physics Laboratory
论文作者
论文摘要
SABER（具有主动背景排斥钠的钠钠）旨在检测超高纯度NAI（TL）晶体中暗物质相互作用的年度速率调制，以便提供Dama/Libra观察到的信号的模型独立测试。它由两个独立的检测器组成； Saber South位于澳大利亚维多利亚州地区的Stawell Underground物理实验室（SUPL）和Laboratori Nazionali del Gran Sasso（LNGS）的Saber North。 Saber South的设计目的是通过使用主动否决和MUON检测系统将季节性或现场相关的效果与暗物质样的调制信号相关。超高的纯度NAI（TL）晶体浸入了线性烷基苯（LAB）液体闪烁体否决权中，进一步被无源钢和聚乙烯屏蔽和塑料闪烁剂Muon否决。已经开展了重要的工作来理解和减轻背景过程，这些过程考虑了探测器材料的辐射，内在和宇宙源性激活过程，并了解晶体和否决系统的性能。 Supl是一个新建的设施，位于Stawell Gold Mine内的1024 m地下（约2900 m的水上），其建筑已于2022年中期完成。该实验室将容纳罕见的事件物理搜索，包括即将进行的Saber暗物质实验，以及支持低背景物理实验和应用（例如放射性生物学和量子计算）的测量设施。 Saber South委托预计将在2023年进行。本文描述了实验的设置和预测以及对地下实验室的描述。
The SABRE (Sodium iodide with Active Background REjection) experiment aims to detect an annual rate modulation from dark matter interactions in ultra-high purity NaI(Tl) crystals in order to provide a model independent test of the signal observed by DAMA/LIBRA. It is made up of two separate detectors; SABRE South located at the Stawell Underground Physics Laboratory (SUPL), in regional Victoria, Australia, and SABRE North at the Laboratori Nazionali del Gran Sasso (LNGS). SABRE South is designed to disentangle seasonal or site-related effects from the dark matter-like modulated signal by using an active veto and muon detection system. Ultra-high purity NaI(Tl) crystals are immersed in a linear alkyl benzene (LAB) based liquid scintillator veto, further surrounded by passive steel and polyethylene shielding and a plastic scintillator muon veto. Significant work has been undertaken to understand and mitigate the background processes, that take into account radiation from the detector materials, from both intrinsic and cosmogenic activated processes, and to understand the performance of both the crystal and veto systems. SUPL is a newly built facility located 1024 m underground (about 2900 m water equivalent) within the Stawell Gold Mine and its construction has been completed in mid-2022. The laboratory will house rare event physics searches, including the upcoming SABRE dark matter experiment, as well as measurement facilities to support low background physics experiments and applications such as radiobiology and quantum computing. The SABRE South commissioning is expected to occur in 2023. This paper describes the setup and projections for the experiment, and the description of the underground laboratory.
