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Communication Dans Un Congrès Année : 2016

Characterization benches for neutrino telescope Optical Modules at the APC laboratory

Résumé

As has been demonstrated by the first generation of neutrino telescopes Antares and IceCube, precise knowledge of the photon detection efficiency of optical modules is of fundamental importance for the understanding of the instrument and accurate event reconstruction. Dedicated test benches have been developed to measure all related quantities for the Digital Optical Modules of the KM3NeT neutrino telescope being currently deployed in the Mediterranean sea. The first bench is a black box with robotic arms equipped with a calibrated single photon source or laser which enable a precise mapping of the detection efficiency at arbitrary incident angles as well as precise measurements of the time delays induced by the photodetection chain. These measurement can be incorporated and compared to full GEANT MonteCarlo simulations of the optical modules. The second bench is a 2mx2m x2m water tank equipped with muon hodoscopes on top and bottom. It enables to study and measure the angular dependence of the DOM's detection efficiency of the Cherenkov light produced in water by relativistic muons, thus reproducing in situ detection conditions. We describe these two benches and present their first results and status.

Dates et versions

hal-01553922 , version 1 (03-07-2017)

Identifiants

Citer

Theodore Avgitas, Alexandre Creusot, Antoine Kouchner. Characterization benches for neutrino telescope Optical Modules at the APC laboratory. 7th Very Large Volume Neutrino Telescope Workshop, Sep 2015, Rome, Italy. pp.06007, ⟨10.1051/epjconf/201611606007⟩. ⟨hal-01553922⟩
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