论文标题
$ {}^{42} $ ar/$ ar/$ {}^{42} $ k背景减少的缓解策略
Mitigation Strategies for ${}^{42}$Ar/${}^{42}$K Background Reduction using Encapsulation with Ultra-Pure Plastic for the LEGEND Experiment
论文作者
论文摘要
中微子双β（0 $νβ$）衰减是确定中微子的主要性质并测量有效的主要中微子质量的最引人注目的方法。传奇协作的目的是寻找0 $νββ$衰减的$ {}^{76} $ ge具有前所未有的灵敏度。如果不可用地下氩气，则宇宙诱导的同位素$ {}^{42} $ AR及其衰减后代$ {}^{42} $ k在液体氩活动的活性否决中，可以创造出0 $ν的背景的0 $ν$ν$ν$ν$ν。我们正在研究减轻$ {}^{42} $ k背景的方法。为了实现这一目标，目前正在研究使用低背景材料使用3D打印技术封装锗探测器。派出了锗探测器的聚（乙烯2,6-萘）（PEN）的仿真结果，以及研究其他潜在材料的计划。
Neutrinoless double-beta (0$νββ$) decay is the most compelling approach to determine the Majorana nature of neutrino and measure effective Majorana neutrino mass. The LEGEND collaboration is aiming to look for 0$νββ$ decay of ${}^{76}$Ge with unprecedented sensitivity. If underground-sourced argon is not available, the cosmogenically-induced isotope ${}^{42}$Ar and its decay progeny ${}^{42}$K in the liquid argon active veto could create a challenging background for the 0$νββ$ signal. We are studying methodologies to mitigate the ${}^{42}$K background. In order to achieve this, encapsulation of germanium detectors with 3D-printed technologies using low background material are currently under investigation. Simulation results of Poly(ethylene 2,6- naphthalate) (PEN) encapsulation of germanium detectors and plans to study other potential materials are presented.
