Cosmic muon flux at shallow depths underground

Details Cosmic muon flux at shallow depths underground Cosmic muon flux at shallow depths underground

2006-01-17

arxiv.org/abs/nucl-ex/0601019v1

Phys.Atom.Nucl. 69 (2006) 1293-1298

Physics

Nuclear Physics

Nuclear Experiment

9 pages, 6 figures, submitted to Phys.Atom.Nucl

Scientific paper

10.1134/S1063778806080047

We consider the cosmic muon background for the installations located at shallow depths. We suggest a relatively simple formula for the sea-level muon spectrum, which allows calculate dependencies of the vertical muon intensity and integral muon flux density on overburden. Muon flux dependency on the zenith angle at overburden of 10 to 100 meters of standard rock shows that muon angular distribution practically does not change in this interval. We present muon angular distributions for three typical apparatus locations in measurements on the surface and at shallow depths. It is shown that for such installations the active shielding "umbrella" should overlap a zenith angle of \theta ~ 80^o to remove the cosmic muon background.

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