论文标题
与News-G一起搜索光线
Search for light dark matter with NEWS-G
论文作者
论文摘要
News-G协作正在使用球形比例计数器搜索轻型暗物质候选者。轻质气体（例如氢，氦气和霓虹灯）被用作目标，可在0.1-10 GEV质量范围内提供通道。在摩登烷的地下实验室中，用sedine获得的第一个结果，在Nucleon-Dark物质交互截面上，置信度的置信水平上限为4.4x 10^{37} cm^2的90％置信水平，对于0.5 GEV质量的候选者。提出了探测器仪器的几个方面的最新发展，并建造了直径140厘米的新的，具有新的紧凑型屏蔽剂的探测器。
The NEWS-G collaboration is searching for light dark matter candidates using a spherical proportional counter. Light gases, such as hydrogen, helium, and neon, are used as targets, providing access in the 0.1-10 GeV mass range. First results obtained with SEDINE, a 60 cm in diameter detector, in the Underground Laboratory of Modane yielded a 90% confidence level upper limit of 4.4x 10^{37} cm^2 on the nucleon-dark matter interaction cross-section for a candidate with 0.5 GeV mass. Recent developments in several aspects of the detector instrumentation are presented, along with the construction of a new, 140 cm in diameter, detector with new compact shielding.
