KIMS地下实验中μ子本底的研究(英文)

Study on the Muon Background in the Underground Laboratory of KIMS

KIMS是寻找和研究暗物质WIMP的实验组.在WIMP寻找实验中,μ子是十分重要的一种本底.我们对地下700m深的Yangyang实验室内的μ子通量进行了测量.介绍了μ子探测器的结构和性能测试.描述了对μ子入射位置和角度分布的分析,并进行了蒙特卡罗模拟.实验室内的μ子通量测量值为(7.0±0.4)×10-8/s/cm2/sr.

KIMS is a group aiming at the search for W＇IMP. In WIMP search experiment, the muon is one important background. We measure the muon flux in Yangyang laboratory where is located at 700m underground. The structure and performance test of muon detector is described. The analysis on muon hit position and angle distribution has been performed. The simulations of muon flux have been done. The muon flux in the laboratory is found to be about （7.0 ± 0.4） × 10^-8/s/cm2/sr.