Abstract
The ANTARES neutrino telescope is the largest and longest-operated underwater neutrino telescope. Data acquisition conditions in a marine environment are not stable in time: biological and physical phenomena follow a seasonal evolution producing a periodical change of the rates registered at the neutrino telescope. Variations in the sea current velocity also affect the measured baseline value and the burst fraction on short time scales.
Highlights
Data acquisition conditions in a marine environment are not stable in time: biological and physical phenomena follow a seasonal evolution producing a periodical change of the rates registered at the neutrino telescope
The ANTARES detector is at present the largest neutrino telescope in the Northern Hemisphere [1]
This means that a set of “scattering tables” containing the probability of each photon to give a hit on a photomultiplier tubes (PMTs) as a function of 5 parameters: the distance from the muon; 3 angles defining the direction of the photons with respect to the muon and to the PMT; the photon arrival time; and considering the diffusion and absorption phenomena, can be created in advance
Summary
The ANTARES detector is at present the largest neutrino telescope in the Northern Hemisphere [1]. It has been operated continuously since 2007, and in its full configuration since 2008. PMTs in the storey are oriented 45◦ downwards in order to optimise their acceptance to Cherenkov light coming from upgoing particles. The length of a line is 450 m and the horizontal distance between neighbouring lines is 60–75 m The optical background due to environmental light (mainly bioluminescent bacteria and 40K decay) is added
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