Long-term monitoring of the ANTARES optical module efficiencies using 40K decays in sea water
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Springer Nature
Fecha
2018Referencia bibliográfica
Albert, A., André, M., Anghinolfi, M., Anton, G., Ardid, M., Aubert, J. J., ... & Basa, S. (2018). Long-term monitoring of the ANTARES optical module efficiencies using $$^{40}\mathrm {{K}} $$ decays in sea water. The European Physical Journal C, 78(8), 669.
Resumen
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.