论文标题
Darkside-20K TPC和地下氩低温系统
The DarkSide-20k TPC and Underground Argon Cryogenic System
论文作者
论文摘要
Darkside-20k（DS-20K）将在直接搜索深色物质中，利用大型双相位项目室（TPC）中容纳的液体和化学性质。 TPC将利用带有许多新颖功能的紧凑，集成的设计，使地下氩的基金量\ si {20} {t}。地下氩气（UAR）来自地下Co $ _2 $ WELLS，并在放射性同位素$^{39} $ AR中耗尽，极大地增强了对暗物质相互作用的实验敏感性。 DS-20K的UAR的$ \ Mathcal {O} $（\ si {100} {t}）是昂贵的，并且已经设计，构造和测试了一个专用的单闭环低温系统。我们介绍了DS-20K TPC设计的概述，以及UAR低温系统的第一个结果。
DarkSide-20k (DS-20k) will exploit the physical and chemical properties of liquid argon housed within a large dual-phase time project chamber (TPC) in its direct search for dark matter. The TPC will utilize a compact, integrated design with many novel features to enable the \SI{20}{t} fiducial volume of underground argon. Underground Argon (UAr) is sourced from underground CO$_2$ wells and depleted in the radioactive isotope $^{39}$Ar, greatly enhancing the experimental sensitivity to dark matter interactions. Sourcing and transporting the $\mathcal{O}$(\SI{100}{t}) of UAr for DS-20k is costly, and a dedicated single-closed-loop cryogenic system has been designed, constructed, and tested to handle the valuable UAr. We present an overview of the DS-20k TPC design and the first results from the UAr cryogenic system.
