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Long-term monitoring of the ANTARES optical module efficiencies using 40K decays in sea water

Author
Albert, A.; Andre, M.; Anghinolfi, M.
Type of activity
Journal article
Journal
European physical journal C
Date of publication
2018-08-01
Volume
78
Number
669
First page
1
Last page
8
DOI
https://doi.org/10.1140/epjc/s10052-018-6132-2 Open in new window
Repository
http://hdl.handle.net/2117/120950 Open in new window
https://arxiv.org/pdf/1805.08675.pdf Open in new window
URL
https://link.springer.com/content/pdf/10.1140/epjc/s10052-018-6132-2 Open in new window
Abstract
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 w...
Citation
Albert, A., Andre, M., Anghinolfi, M. Long-term monitoring of the ANTARES optical module efficiencies using 40K decays in sea water. "European physical journal C", 1 Agost 2018, vol. 78, núm. 669.
Keywords
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.
Group of research
LAB - Laboratory of Applied Bioacoustics

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