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Long-term monitoring of the ANTARES optical module efficiencies using <sup>40</sup>K decays in sea water: The ANTARES Collaboration

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Authors
Albert, A.
André, M.
Anghinolfi, M.
Anton, G.
Ardid, M.
Aubert, J.
Aublin, J.
Avgitas, T.
Baret, B.
Barrios-Martí, J.
Basa, S.
Belhorma, B.
Bertin, V.
Biagi, S.
Bormuth, R.
Boumaaza, J.
Bourret, S.
Bouwhuis, M.
Brânzas, H.
Bruijn, R.
Brunner, J.
Busto, J.
Capone, A.
Caramete, L.
Carr, J.
Celli, S.
Chabab, M.
El Moursli, R.
Chiarusi, T.
Circella, M.
Coelho, J.
Coleiro, A.
Colomer, M.
Coniglione, R.
Costantini, H.
Coyle, P.
Creusot, A.
Díaz, A.
Deschamps, A.
Distefano, C.
Palma, I.
Domi, A.
Donzaud, C.
Dornic, D.
Drouhin, D.
Eberl, T.
El Bojaddaini, I.
El Khayati, N.
Elsässer, D.
Enzenhöfer, A.
Ettahiri, A.
Fassi, F.
Felis, I.
Ferrara, G.
Fusco, L.
Gay, P.
Glotin, H.
Grégoire, T.
Ruiz, R.
Graf, K.
Hallmann, S.
van Haren, H.
Heijboer, A.
Hello, Y.
Hernández-Rey, J.
Hößl, J.
Hofestädt, J.
Illuminati, G.
James, Clancy
de Jong, M.
Jongen, M.
Kadler, M.
Kalekin, O.
Katz, U.
Kouchner, A.
Kreter, M.
Kreykenbohm, I.
Kulikovskiy, V.
Lachaud, C.
Lahmann, R.
Lefèvre, D.
Leonora, E.
Levi, G.
Date
2018
Type
Journal Article

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Citation
Albert, A. and Andr�, M. and Anghinolfi, M. and Anton, G. and Ardid, M. and Aubert, J. and Aublin, J. et al. 2018. Long-term monitoring of the ANTARES optical module efficiencies using <sup>40</sup>K decays in sea water: The ANTARES Collaboration. European Physical Journal C. 78 (8).
Source Title
European Physical Journal C
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School
Curtin Institute of Radio Astronomy (Physics)
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Abstract

© 2018, The Author(s). Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection efficiency of optical modules is studied. A modest loss of only 20% in 9 years is observed. The relative time calibration between adjacent modules is derived as well.