Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors

Abrahão, T, Almazan, H, Dos Anjos, J C, Appel, S, Baussan, E, Bekman, I, Bezerra, T J C, Bezrukov, L, Blucher, E, Brugière, T, Buck, C, Busenitz, J, Cabrera, A, Camilleri, L, Carr, R and others, (2017) Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors. Journal of Cosmology and Astroparticle Physics, 2017. a017 1-17. ISSN 1475-7516

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Abstract

A study on cosmic muons has been performed for the two identical near and far neutrino detectors of the Double Chooz experiment, placed at ∼120 and ∼300 m.w.e. underground respectively, including the corresponding simulations using the MUSIC simulation package. This characterization has allowed us to measure the muon flux reaching both detectors to be (3.64 ± 0.04) × 10-4 cm-2s-1 for the near detector and (7.00 ± 0.05) × 10-5 cm-2s-1 for the far one. The seasonal modulation of the signal has also been studied observing a positive correlation with the atmospheric temperature, leading to an effective temperature coefficient of αT = 0.212 ± 0.024 and 0.355 ± 0.019 for the near and far detectors respectively. These measurements, in good agreement with expectations based on theoretical models, represent one of the first measurements of this coefficient in shallow depth installations.

Item Type: Article
Keywords: cosmic ray experiments, neutrino detectors
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 15 Nov 2021 16:39
Last Modified: 15 Nov 2021 16:45
URI: http://sro.sussex.ac.uk/id/eprint/102890

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