Heidelberg 2022 – scientific programme
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T: Fachverband Teilchenphysik
T 68: Detector Systems 2
T 68.2: Talk
Wednesday, March 23, 2022, 16:30–16:45, T-H27
Wavelength-shifter coated polystyrene as a low-cost plastic scintillator detector — Alessia Brignoli1, Andrew Conaboy1, •Doramas Jimeno1,2, Heiko Lacker1, Christian Scharf1, and Jakob Schmidt1 — 1Humboldt-Universität zu Berlin, Berlin, Germany — 2Universitat de Barcelona, Barcelona, Spain
Plastic scintillator detectors are widely used in particle physics for detecting charged particles crossing the scintillating material, converting the excitation energy into fluorescence radiation. We studied the light yield of pure polystyrene plates uncoated, and coated with a wavelength-shifting dye, coupled to a photomultiplier, using beta particles from a Sr-90 source. The results with the coated polystyrene plate show around four times higher photoelectron yield compared to the uncoated plate. To estimate the fraction of Cherenkov radiation, we compared it to the light yield of an uncoated and a coated plate of a non-scintillating material (PMMA). These results motivate future studies for the development of easy-to-build, low-cost, polystyrene-based plastic scintillator detectors.