Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 47: Experimental techniques in astroparticle physics II

T 47.2: Talk

Tuesday, March 16, 2021, 16:15–16:30, Tv

Geant4 studies on the impact of the harness on the sensitivity of the mDOM — •Moritz Schlechtriem, Alexander Kappes, and Lew Classen for the IceCube collaboration — Institut für Kernphysik, WWU Münster, Münster

The IceCube neutrino telescope at the South Pole uses optical sensors to detect Cherenkov radiation emitted by charged secondary particles produced in neutrino interactions. For a precise reconstruction of the neutrino properties, a detailed characterization of the detector performance is mandatory. With seven additional closely spaced strings, the IceCube Upgrade will not only significantly enhance IceCube's capabilities at low energies but also improve the calibration of the detector at all energies. More than half of its sensors will be multi-PMT Digital Optical Modules (mDOMs). The mDOM features a more than doubled effective photosensitive area compared to the sensors in the current detector as well as intrinsic directional sensitivity and nearly isotropic acceptance. In this paper, the impact of the mDOM harness on the photon sensitivity of the module is investigated using a detailed Geant4 simulation of the module.