Neutron- and muon-induced background in underground physics experiments

Details Neutron- and muon-induced background in underground physics experiments Neutron- and muon-induced background in underground physics experiments

2008-02-25

arxiv.org/abs/0802.3566v1

Eur.Phys.J.A36:171-180,2008

Astronomy and Astrophysics

Astrophysics

10 pages, 8 figures. Presented in the IV ILIAS Annual Meeting. Accepted for publication on EPJ A

Scientific paper

10.1140/epja/i2007-10539-6

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.

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