Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 61: Methods of astroparticle physics IV

T 61.8: Talk

Wednesday, April 1, 2020, 18:15–18:30, L-3.001

Parameterisation of the angular acceptance of KM3NeT PMTs — •Johannes Schumann for the ANTARES-KM3NeT-Erlangen collaboration — Friedrich-Alexander-Universität Erlangen-Nürnberg, ECAP

The KM3NeT neutrino telescope is currently being built in the depths of the Mediterranean Sea. The detector consists of a three-dimensional array of digital optical modules, housing 31 photomultiplier tubes (PMT) each. A detailed simulation of the experiment is required in order to perform precision measurements of neutrino interactions. The PMT properties are substantial input for the detector response model. In this talk, the in-situ measurement of the angular acceptance based on Cherenkov light emitted by Potassium-40 decays in the sea water is discussed. A comparison of this measurement and the corresponding simulations, as well as a parameterisation for the PMT angular acceptance will be presented.