München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Instrumentation XIII

HK 62.3: Talk

Friday, March 22, 2019, 14:45–15:00, HS 11

Comparison of Different Coatings for Scintillating-Plastic Fibers — •Verena Eiblmeier, Laura Fabbietti, Martin J. Losekamm, Stephan Paul, and Thomas Pöschl — Technical University, Garching, Germany

Plastic scintillators have a long tradition as radiation detectors in high-energy and medical physics. Due to their low weights and cost, large segmented volumes can be built up from them. To suppress optical crosstalk between the different segments, the surface of the scintillator must be made impermeable to light. We tested different surface coatings on short scintillating-plastic fibers and compare their mechanical and optical properties. To compare the light output of the different fibers, we coupled them to silicon photomultipliers and irradiated them with a pion and proton beam at Paul Scherrer Insitute. We performed different measurements to compare the magnitude and the uniformity of the light yield along the scintillating fiber.