Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 1: Neutrinoastronomie I

T 1.4: Vortrag

Montag, 19. März 2018, 16:45–17:00, Philo-HS1

Improving the muon track reconstruction of IceCube and IceCube-Gen2 — •Federica Bradascio for the IceCube collaboration — DESY Zeuthen

IceCube is a cubic-kilometer Cherenkov telescope operating at the South Pole. It aims at detecting astrophysical neutrinos and identifying their sources. High-energy muon neutrinos are identified by the secondary muons produced in the interactions with the ice. The muon tracks are reconstructed using a maximum likelihood method, which models the arrival times of Cherenkov photons registered by the photo-multipliers. This work aims at improving the muon angular resolution of IceCube and of its planned extension, IceCube-Gen2, in the sub-degree range. The current muon reconstruction assumes continuous energy loss along the muon track, and does not take into account photo-multiplier related effects like pre-pulses and after-pulses. In the reconstruction scheme presented here, the expected arrival time distribution has been modified in order to parametrize the effect of pre-pulses and the stochastic muon energy losses.