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München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 61: Fundamental Symmetries and Astroparticle Physics

HK 61.5: Talk

Friday, March 22, 2019, 15:30–15:45, HS 18

Fluorescence measurements of optical active materials in response to liquid argon scintillation — •Ekaterina Rukhadze1 ,2, Patrick Krause1, Laszlo Papp1, Stefan Schönert1, and Mario Schwarz11Technische Universität München, Garching, Germany — 2Institute of Experimental and Applied Physics, CTU in Prague, Prague, Czech Republic

The next generation of large volume liquid argon (LAr) detectors requires an understanding and optimization of the collection of light created by scintillation. Since most photodetectors are not sensitive for the emission wavelength of LAr, wavelength sifter (WLS) materials are needed. Measurements of the fluorescence yield of WLS materials in LAr should be performed in order to characterize the light collection of these detectors. For this purpose a new triggered LAr light source and detection system has been developed. An overview of the setup as well as first measurements using different WLS will be presented. This work is supported in part by the German Federal Ministry for Education and Research (BMBF) Verbundforschung 05A17W02, the German Research Foundation (DFG) via the SFB1258, the European Structural and Investment Fund, grant cz.02.2.69/0.0/0.0/16_027/0008465 and the Ministry of Industry and Trade of the Czech Republic via the FV30231.

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