LSM中μ子感生中子本底的研究:探测器概念和装置状况
Studies of the muon-induced neutron background in LSM: detector concept and status of the installation
摘要:
冷暗物质(CDM)的一个很好的候选粒子是超对称中性伴子,或者更一般的弱相互作用大质量粒子(WIMP)。在直接检测实验中,WIMP与检测介质的预期相互作用率低于0.01事件/kg/天。这使得背景条件的良好知识非常重要,特别是随着检测器灵敏度的不断提高。背景成分之一与宇宙μ子有关,特别是μ子诱导的中子。详细的研究进行了雪绒花合作在这方面的介绍。这项活动包括GEANT 4模拟与完整的事件拓扑结构,以及一个专门的测量与一个新的中子计数器安装在2008年秋季在LSM(Alternatoire Souterrain de Modane,法国)。这个计数器被纳入现有的μ子否决系统,从而允许监测与入射μ子一致的中子。
英文摘要:
A good particle candidate for Cold Dark Matter (CDM) is the supersymmetric neutralino or more generally a weakly interacting massive particle (WIMP). The expected interaction rate of WIMPs with the detector medium in the direct detection experiments is below 0.01 events/kg/day. This makes a good knowledge of the background conditions highly important, especially with ever increasing sensitivity of the detectors. One of the background components is related to cosmic muons and in particular to muon-induced neutrons. Detailed studies carried out by the Edelweiss collaboration in this respect are presented. This activity includes GEANT4 simulations with full event topology as well as a dedicated measurement with a new neutron counter installed in the fall of 2008 in LSM (Laboratoire Souterrain de Modane, France). This counter is incorporated into the existing muon veto system thus allowing to monitor neutrons in coincidence with the incoming muons.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。