Large-scale, precision xenon doping of liquid argon
Large-scale, precision xenon doping of liquid argon
复制标题
液氩的大规模、精密氙气掺杂
DOI：
10.1016/j.nima.2021.165575
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Gibbons, R.
中科院分区：
文献类型：
--
作者：
McFadden, N.;Elliott, S.R.;Gold, M.;Fields, D.E.;Rielage, K.;Massarczyk, R.;Gibbons, R.
液态氩闪烁光的探测是当前和未来许多核/粒子物理实验的关键实验技术，如中微子物理，无中微子双β衰变和暗物质搜索。虽然添加少量氙（掺杂）以提高光产额的想法引起了相当大的兴趣，但这种技术从未在必要的规模或精度上得到证明。在这里，我们报告氙掺杂在100升低温容器。以1.00±0.06 ppm、2.0±0.1 ppm、5.0±0.3 ppm和10.0±0.5 ppm四种浓度进行氙掺杂。这些测量代表了出版时最精确的氙掺杂测量。我们观察到在10 ppm的掺杂剂浓度下，平均光产额增加了1.92±0.12（系统）±0.02（统计）倍。
The detection of scintillation light from liquid argon is an experimental technique key to a number of current and future nuclear/particle physics experiments, such as neutrino physics, neutrinoless double beta decay and dark matter searches. Although the idea of adding small quantities of xenon (doping) to enhance the light yield has attracted considerable interest, this technique has never been demonstrated at the necessary scale or precision. Here we report on xenon doping in a 100 l cryogenic vessel. Xenon doping was performed in four concentrations of 1.00±0.06 ppm, 2.0±0.1 ppm, 5.0±0.3 ppm, and 10.0±0.5 ppm. These measurements represent the most precise xenon doping measurements as of publishing. We observed an increase in average light yield by a factor of 1.92±0.12 (syst)±0.02 (stat) at a dopant concentration of 10 ppm.