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arXiv 0802.3566astro-ph
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地下物理实验中的中子和μ子感生本底

Neutron- and muon-induced background in underground physics experiments

V. A. Kudryavtsev, L. Pandola, V. Tomasello

摘要:

在深地下实验室中由中子引起的本底是所有寻找稀有事件的实验的关键问题,例如暗物质相互作用或无中微子2-β衰变。中子可以通过自然放射性、自发裂变或(α,n)反应产生,也可以通过高能宇宙射线引发的相互作用产生。在所有地下实验中,中子本底的蒙特卡罗模拟对于总本底率的评估和剔除策略的优化起着至关重要的作用。本文综述和讨论了常用的蒙特卡罗方法,这些方法用于评价中子感生本底和优化实验装置。重点是蒙特卡罗背景估计的可靠性问题。

英文摘要:

Background induced by neutrons in deep underground laboratories is a critical issue for all experiments looking for rare events, such as dark matter interactions or neutrinoless 2-beta decay. Neutrons can be produced either by natural radioactivity, via spontaneous fission or (alpha,n) reactions, or by interactions initiated by high-energy cosmic rays. In all underground experiments, Monte Carlo simulations of neutron background play a crucial role for the evaluation of the total background rate and for the optimization of rejection strategies. The Monte Carlo methods that are commonly employed to evaluate neutron-induced background and to optimize the experimental setup, are reviewed and discussed. Focus is given to the issue of reliability of Monte Carlo background estimates.

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。

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