Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 22: Experimental techniques in astroparticle physics I

T 22.4: Vortrag

Montag, 15. März 2021, 16:50–17:05, Tv

Comparison of directional reconstruction algorithms for muons using the Moon shadow in IceCube — •Sebastian Schindler, Thorsten Glüsenkamp, and Gisela Anton for the IceCube collaboration — Erlangen Centre for Astroparticle Physics (ECAP), University Erlangen-Nürnberg, Germany

IceCube is a cubic-kilometer-sized neutrino observatory located at the Geographic South Pole. In IceCube, arrival directions of muon neutrinos are determined from resulting muon tracks in the detector. Atmospheric muons, which originate from cosmic rays, produce a similar signature in the detector, and can therefore be used to test directional reconstruction algorithms. The Moon acts as a calibration source for directional reconstructions using atmospheric muons, by producing an easy-to-observe localized reduction of the mostly uniform cosmic-ray flux.

The directional accuracy of two new muon-reconstruction algorithms is tested by using the abundant flux of cosmic rays in a Moon analysis. One reconstruction is a further development of the currently best reconstruction used in IceCube, and the other is a machine-learning-based approach. The results of the accuracy comparison with the currently best reconstruction will be presented.