论文标题
R2D2球形TPC：第一个能量分辨率结果
R2D2 spherical TPC: first energy resolution results
论文作者
论文摘要
球形时间投影室（TPC），也称为球形比例计数器，用于寻找稀有现象，例如轻质暗物质候选者。球形TPC具有许多基本特征，使其成为搜索中微子双β衰变（$β\beta0ν$）的有前途的候选人。吨级球形TPC实验可以涵盖与倒数质量层次结构相关的参数空间区域，并获取了几年的数据。在这个方向上，R2D2工作的主要R \＆D目标是表明所需的能量分辨率。据报道，据报道，从氩气填充原型检测器的第一结果表明，在0.2至1.1〜条压力范围内的5.3〜MEV $α$轨道的能量分辨率为1.1 \％FWHM。就能源解决方案而言，这是一个主要的里程碑，为对氙气的进一步研究铺平了道路，以及可能将该技术用于$β\beta0ν$搜索。
Spherical time projection chambers (TPC), also known as spherical proportional counters, are employed in the search for rare phenomena, such as light Dark Matter candidates. The spherical TPC exhibits a number of essential features, making it a promising candidate for the search of neutrinoless double beta decay ($β\beta0ν$). A tonne-scale spherical TPC experiment could cover a region of parameter space relevant for the inverted mass hierarchy with a few years of data taking. In this direction, the major R\&D goal of the R2D2 effort is the demonstration of the required energy resolution. First results from an argon-filled prototype detector are reported, demonstrating an energy resolution of 1.1\% FWHM for 5.3~MeV $α$ tracks in the 0.2 to 1.1~bar pressure range. This is a major milestone in terms of energy resolution, paving the way for further studies with xenon gas, and the possible use of this technology for $β\beta0ν$ searches.
