SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 97: Calorimeter / Detector Systems IV

T 97.4: Vortrag

Mittwoch, 22. März 2023, 18:15–18:30, WIL/C133

Characterization of a wavelength-shifter coated polystyrene plastic scintillator detector — Alessia Brignoli, Constantin Eckardt, Heiko Lacker, •Christophe Mullesch, Christian Scharf, and Ben Skodda — Humboldt-Universität zu Berlin, Berlin, Germany

Plastic scintillator detectors are widely used in particle physics for detecting charged particles crossing the scintillating material, converting the excitation energy into fluorescence radiation. It has been recently shown that a pure polystyrene plate that is coated with a wavelength-shifting dye can be used as an easy-to-build cheap scintillator with a decent light output. In this work, we further studied the light-yield response of a rectangular polystyrene tile coated with a wavelength-shifting dye. It was coupled to a photomultiplier at each end of the strip and exposed to beta particles from a Sr-90 source. By analyzing the light-yield and signal arrival times as a function of the beta source position along the tile, we determined the time and spatial resolution of the detector, as well as the light signal speed and the effective attenuation length in the scintillator.