Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 14: Methods in Astroparticle Physics I
T 14.2: Vortrag
Montag, 31. März 2025, 17:00–17:15, VG 3.101
Development and Construction of the Wavelength-shifting Optical Module for the IceCube Upgrade — •Yuriy Popovych1, Sebastian Böser1, Enrico Ellinger2, Klaus Helbing2, Adam Rifaie2, Lea Schlickmann1, and Nick Schmeißer2 for the IceCube collaboration — 1Johannes Gutenberg-Universität Mainz — 2Bergische Universität Wuppertal
The Wavelength-shifting Optical Module (WOM) is an innovative photosensor concept set to be deployed in the IceCube Upgrade during austral summer 2025/26. Utilizing wavelength-shifting and total internal reflection techniques, the WOM is well suited for detecting low-energy neutrinos thanks to its low noise rate. Its photosensitive area consists of a cylindrical tube coated with wavelength-shifting paint, which converts UV-photons and guides them to coupled Photomultiplier Tubes (PMTs) at both ends. This optical design decouples the photosensitive area from the PMTs, achieving a high signal-to-noise ratio and effective coverage of the UV-region of the Cherenkov spectrum.
A total of 11 WOMs are planned for deployment, with 5 already shipped. This presentation will provide insights into the production process, highlight key engineering challenges, and discuss results from optical acceptance testing. Additionally, recent design improvements and the production status of the second batch, scheduled for shipment this summer, will be featured.
Keywords: Wavelength-shifter; Optical Module; IceCube; Photomultiplier Tubes; UV sensitivity