SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 126: Gas-Detecors, Detector Systems

T 126.5: Vortrag

Donnerstag, 23. März 2023, 16:50–17:05, WIL/C207

Photon exit angles of Wavelength-Shifting Optical Modules for the SHiP-SBT — •Florian Rehbein for the SHiP-SBT collaboration — RWTH Aachen University

This contribution will present simulations of the photon exit angle distributions of a Wavelength-Shifting Optical Module (WOM) for the SHiP experiment. These simulations are compared to first measurements taken with a DSLR camera on a laboratory test stand.

WOMs present a novel optical sensor for numerous applications, combining a well-designed light guide with a wavelength-shifting coating. They will be used as an integral part of the Surrounding Background Tagger (SBT) in SHiP (Search for Hidden Particles), a proposed general-purpose fixed target experiment at the SPS accelerator of the CERN facility. The SBT acts as a discriminator against external particle interactions and is composed of many cells utilizing liquid scintillator and tube-shaped WOMs made of PMMA to detect traversing particles. The coating of the WOMs absorbs the scintillation photons and re-emits wavelength-shifted photons, which are then detected by an array of SiPMs coupled to one end of the WOM.