论文标题
通过Saber实验直接搜索暗物质
Direct search of dark matter with the SABRE experiment
论文作者
论文摘要
由于行星的轨道运动，预计地球探测器中假设的暗物质颗粒的相互作用速率预计将进行年度调节。 Dama实验已经观察到这种调制在一系列闪烁的NAI（TL）晶体中具有很高显着性的调制。该主张仍未得到证实，因为本研究中涉及的其他实验使用不同的暗物质目标，并且不能以模型无关的方式与Dama进行比较。 SABER实验试图通过开发具有非常低放射性的高度纯NAI（TL）晶体检测器来提供急需的模型独立测试，并将它们部署到活跃的否决探测器中，该检测器可以在暗物质测量中拒绝关键背景。 Saber的最终布局将由LNGS（意大利实验室Nazionali del Gran Sasso）和Supl（Stawell Underground Physics Laboratory，Australia）组成。对两个半球的数据集的组合分析将允许确定对调节信号的任何陆地贡献。本文概述了探测器设计，以及蒙特卡洛模拟的结果以及LNGS的Saber原性活动的状态。
The interaction rate of hypothesised dark matter particles in an Earth-bound detector is expected to undergo an annual modulation due to the planet's orbital motion. The DAMA experiment has observed such a modulation with high significance in an array of scintillating NaI(Tl) crystals. This claim is still unverified inasmuch as the other experiments involved in this research use different dark matter targets and cannot be compared with DAMA in a model-independent way. The SABRE experiment seeks to provide a much-needed model-independent test by developing highly pure NaI(Tl) crystal detectors with very low radioactivity and deploying them into an active veto detector that can reject key backgrounds in a dark matter measurement. The final layout of SABRE will consist of a pair of twin detectors at LNGS (Laboratori Nazionali del Gran Sasso, Italy) and SUPL (Stawell Underground Physics Laboratory, Australia). The combined analysis of data sets from the two hemispheres will allow to identify any terrestrial contribution to the modulating signal. This article gives an overview of the detector design together with the results of Monte Carlo simulations and of the status of SABRE proof-of-principle activities at LNGS.
