1. Cosmic-ray muon flux at Canfranc Underground Laboratory
- Author
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Wladyslaw Henryk Trzaska, Maciej Slupecki, Iulian Bandac, Alberto Bayo, Alessandro Bettini, Leonid Bezrukov, Timo Enqvist, Almaz Fazliakhmetov, Aldo Ianni, Lev Inzhechik, Jari Joutsenvaara, Pasi Kuusiniemi, Kai Loo, Bayarto Lubsandorzhiev, Alexander Nozik, Carlos Peña Garay, and Maria Poliakova
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract Residual flux and angular distribution of high-energy cosmic muons have been measured in two underground locations at the Canfranc Underground Laboratory (LSC) using a dedicated Muon Monitor. The instrument consists of three layers of fast scintillation detector modules operating as 352 independent pixels. The monitor has a flux-defining area of $$1~\hbox {m}^{2}$$ 1m2 and covers all azimuth angles, and zenith angles up to $$80^{\circ }$$ 80∘ . The measured integrated muon flux is $$(5.26 \pm 0.21) \times 10^{-3}~\hbox {m}^{-2}\hbox {s}^{-1}$$ (5.26±0.21)×10-3m-2s-1 in the Hall A of the LAB2400 and $$(4.29 \,\pm \, 0.17) \times 10^{-3}~\hbox {m}^{-2}\hbox {s}^{-1}$$ (4.29±0.17)×10-3m-2s-1 in LAB2500. The angular dependence is consistent with the known profile and rock density of the surrounding mountains. In particular, there is a clear maximum in the flux coming from the direction of the Rioseta valley.
- Published
- 2019
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