Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 42: Detector Systems 1

T 42.5: Vortrag

Dienstag, 22. März 2022, 17:20–17:35, T-H27

Impact of a reflector on the light yield of WOMs — •Alexander Vagts for the SBT collaboration — Humboldt-Universität zu Berlin, Berlin, Deutschland

The usage of wavelength-shifting optical modules (WOMs) as photon detectors was first proposed for the IceCube large-volume extension and then also for large-area liquid scintillator detectors as the SHiP surrounding background tagger (SBT). A WOM is a light-guiding tube coated with a UV light-absorbing paint that emits secondary photons in the visible spectrum. By total internal reflection inside the tube walls, these photons are guided to the actual photon detector, which in this case is made of a ring array of silicon photomultipliers that is coupled to one end of the tube. This contribution shows results on whether a reflector at the other end of a WOM tube improves the light yield using cosmic muons traversing a liquid-scintillator detector prototype. This work is funded by the DFG.