PT Journal
AU ANTARES Collaboration (Albert, Aea
   Barrios-Marti, J
   Coleiro, A
   Colomer, M
   Hernandez-Rey, JJ
   Illuminati, G
   Lotze, M
   Zornoza, JD
   Zuñiga, J
TI Long-term monitoring of the ANTARES optical module efficiencies using K-40 decays in sea water
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2018
BP 669
EP 8pp
VL 78
IS 8
DI 10.1140/epjc/s10052-018-6132-2
LA English
AB 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.
ER