Material radioassay and selection for the XENON1T dark matter experiment
Material radioassay and selection for the XENON1T dark matter experiment
复制标题
DOI：
10.1140/epjc/s10052-017-5329-0
复制
发表时间：
2017-12-19
影响因子：
4.4
通讯作者：
Nisi, S.
中科院分区：
文献类型：
--
作者：
Aprile, E.;Aalbers, J.;Nisi, S.
XENON1T暗物质实验旨在通过与氙原子的低能相互作用来探测弱相互作用大质量粒子（wimp）。为了探测到这种罕见的事件，需要使用放射性材料来减少预期WIMP信号区域内背景事件的数量。在本文中，我们报告了XENON1T实验中广泛的物质放射性分析活动的结果。利用伽玛射线光谱和质谱技术，系统地测量了一百多个样品中各种材料的痕量放射性杂质。测量的活度允许在探测器构建阶段严格选择和放置材料，并通过蒙特卡罗模拟为XENON1T探测灵敏度估计提供输入。
The XENON1T dark matter experiment aims to detect weakly interactingmassive particles (WIMPs) through low-energy interactions with xenon atoms. To detect such a rare event necessitates the use of radiopure materials to minimize the number of background events within the expected WIMP signal region. In this paper we report the results of an extensive material radioassay campaign for the XENON1T experiment. Using gamma-ray spectroscopy and mass spectrometry techniques, systematic measurements of trace radioactive impurities in over one hundred samples within a wide range of materials were performed. The measured activities allowed for stringent selection and placement of materials during the detector construction phase and provided the input for XENON1T detection sensitivity estimates through Monte Carlo simulations.