Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 117: Trigger+DAQ 4

T 117.1: Vortrag

Freitag, 8. März 2024, 09:00–09:15, Geb. 30.23: 3/1

Reconstruction of faint non-standard model particles in IceCube — •Nick Jannis Schmeißer, Timo Stürwald, and Alexander Sandrock — Bergische Universität Wuppertal

The new Faint Particle Trigger (FPT) in IceCube was developed with the intention of reaching a higher sensitivity for faint signals in the IceCube detector. Instead of customary triggers, which are based on local coincidences between two optical modules in the detector, it also uses isolated hits. Therefore, it is especially suited for the search for faint signals in the detector. Examples are fractionally charged particles, which produce less Cherenkov light in comparison to muons because of their smaller charge, or other non-standard model particles.

This presentation shows studies on multiple cleaning and reconstruction approaches in order to develop a reconstruction algorithm for events triggered by the FPT. The discussed algorithms include customary reconstruction techniques used in IceCube, which were adapted to the newly recorded signals, as well as new approaches that use additional information provided by the trigger. Furthermore, reconstruction methods based on machine learning using Graph Neural Networks are applied to the resulting triggered events.

Keywords: IceCube; Reconstruction