Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 56: Methods in astroparticle physics 3

T 56.1: Talk

Wednesday, March 6, 2024, 16:00–16:15, Geb. 20.30: 2.067

Design of a co-deployed stratigraphy logger for the IceCube Upgrade and IceCube Gen2 — •Anna Eimer and Martin Rongen for the IceCube collaboration — Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander-Universität Erlangen-Nürnberg

A precise understanding of the optical properties of the instrumented Antarctic ice sheet is crucial to the performance of the IceCube Neutrino Observatory and its planned successor, IceCube-Gen2.

The ice optical properties are driven by impurities deposited with the snow that formed the ice and thus layers of constant optical properties form a stratigraphy. Due to the underlying bedrock, these layers undulate over the large lateral footprints of these detectors.

Within IceCube, the layer undulations have originally been mapped using stratigraphy measurements by a stand-alone laser dust logger. It required a dedicated deployment setup, as it was not located on the main sensor cables. This resulted in significantly increased costs.

In this talk, I will summarize the modeling of ice layer undulations and describe a newly started project to replace the stand-alone dust logger. It consists of a light source that can be co-deployed with the photosensor modules and operated during the deployment of the detector. The newly developed device is planned to be tested during the deployment of the IceCube Upgrade in 2025/26, so to ensure success during IceCube-Gen2.

Keywords: IceCube; Calibration; Ice; instrumentation