Cosmic-ray muon flux at Canfranc Underground Laboratory
Trzaska, Wladyslaw Henryk; Slupecki, Maciej; Bandac, Iulian; Bayo, Alberto; Bettini, Alessandro; Bezrukov, Leonid; Enqvist, Timo; Fazliakhmetov, Almaz; Ianni, Aldo; Inzhechik, Lev; Joutsenvaara, Jari; Kuusiniemi, Pasi; Loo, Kai; Lubsandorzhiev, Bayarto; Nozik, Alexander; Garay, Carlos Peña; Poliakova, Maria (2019-08-28)
Trzaska, W.H., Slupecki, M., Bandac, I. et al. Eur. Phys. J. C (2019) 79: 721. https://doi.org/10.1140/epjc/s10052-019-7239-9
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https://urn.fi/URN:NBN:fi-fe2019090326555
Tiivistelmä
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 m² and covers all azimuth angles, and zenith angles up to 80°. The measured integrated muon flux is (5.26±0.21)×10⁻³ m⁻²s⁻¹ in the Hall A of the LAB2400 and (4.29±0.17)×10⁻³3 m⁻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.
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