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T: Fachverband Teilchenphysik
T 23: Experimental Techniques in Astroparticle Physics 1
T 23.5: Talk
Monday, March 21, 2022, 17:15–17:30, T-H36
Performance evaluation of the Wavelength-shifting Optical Module for the IceCube Upgrade — •Yuriy Popovych1, Sebastian Böser1, Anna Pollmann2, John Rack-Helleis1, and Martin Rongen1 for the IceCube collaboration — 1JGU Mainz — 2Bergische Universität Wuppertal
In the upcoming IceCube Upgrade several new types of sensors will be deployed so to increase the sensitivity and explore possibilities for the envisioned IceCube Gen2 detector.
One of the modules to be deployed in the Upgrade is the Wavelength-shifting Optical Module (WOM). It consists of a quartz tube coated with Wavelength-Shifting (WLS-) paint with two Photomultiplier Tubes (PMTs) attached to its ends located inside a quartz pressure vessel filled with PFPE. The paint absorbs UV-photons and reemits them as visible light which is then captured through total internal reflection and propagate to a PMT on each side. This design results in a large photosensitive area, UV-sensitivity and a high signal-to-noise ratio. Through various improvements, like the choice of the filling material or coating techniques the efficiency of the modules can be optimized.
This talk will present the optical design of the WOM and explain the contributions of the single WOM components to efficiency of the module. Further, several simulation tools will be presented used to study and optimize the overall performance.