Erlangen 2026 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

T: Fachverband Teilchenphysik

T 105: Methods in Astroparticle Physics V

T 105.6: Talk

Friday, March 20, 2026, 10:15–10:30, KS 00.004

Optical calibration of the ice stratigraphy logger in the IceCube Upgrade — •Andrei Chubarov, Anna Eimer, and Martin Rongen for the IceCube collaboration — Erlangen Center for Astroparticle Physics (ECAP)

The IceCube Neutrino Observatory, deployed in the Antarctic glacier, detects atmospheric and astrophysical neutrinos using Cherenkov radiation from secondary charged particles. Limited knowledge of the ice optical properties is currently the dominant systematic for many analyses. The recently deployed IceCube Upgrade includes several new types of calibration modules, enabling additional measurements of the optical properties of the ice. The LOMlogger is such a device, which measured the backscattered light from a collimated light source to analyse the ice stratigraphy in two Upgrade drill holes. This new data covers 150m below the previously explored ice depths and serves as a technology demonstrator for potential large-scale stratigraphy logging in IceCube-Gen2.

In this talk, laboratory characterizations of the light source employed by the LOMlogger will be presented. This includes the pulsed intensity and the angular profile of the laser beam emitted into the ice.

Keywords: Ice; Calibration; Hardware