Long-term monitoring of the ANTARES optical module efficiencies using ${}^{40}\mathrm{K}$ decays in sea water

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 well.

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Cited by in corpus (8)

• Determining the Neutrino Mass Ordering and Oscillation Parameters with KM3NeT/ORCA
• Dependence of atmospheric muon flux on seawater depth measured with the first KM3NeT detection units
• Two-Year Optical Site Characterization for the Pacific Ocean Neutrino Experiment P-ONE in the Cascadia Basin
• Measurement of the atmospheric ${\nu }_e$ and ${\nu }_{\mu }$ energy spectra with the ANTARES neutrino telescope
• Neutrino telescopes and high-energy cosmic neutrinos
• Searches for neutrinos in the direction of radio-bright blazars with the ANTARES telescope
• Measuring the atmospheric neutrino oscillation parameters and constraining the 3+1 neutrino model with ten years of ANTARES data
• Long term study of sedimentation and biofouling at Cascadia Basin, the site of the Pacific Ocean Neutrino Experiment