Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 64: Experimentelle Techniken der Astroteilchenphysik 3

T 64.4: Talk

Tuesday, March 28, 2017, 17:30–17:45, VSH 18

Characterization of a wavelength shifter coated SiPM — •Patrick Hufschmidt, Jürgen Hößl, Aco Jamil, Lukas Maderer, Judith Schneider, Michael Wagenpfeil, Tobias Ziegler, Gisela Anton, and Thilo Michel — Erlangen Center for Astroparticle Physics, 91058 Erlangen, Germany

Silicon Photomultipliers (SiPMs) are promising candidates for photon counting experiments using next generation nobel gas detectors. Thus they can be an excellent choice for photon detection in experiments for which energy resolution of a signal - derived from scintillation light detection - is crucial. SiPMs offer a high radio purity and single photon resolution which makes them a good choice of photosensors in low background experiments. Since SiPMs are typically not sensitive to wavelengths in the VUV-region, where scintillation light from nobel gases occurs, a wavelength shifter can be applied yielding sufficient quantum efficiency at VUV-wavelengths. We measured internal gain, temperature dependent breakdown voltage, crosstalk probability and photon detection efficiency for xenon scintillation light at cryogenic temperatures for a wavelength shifter coated SiPM. This contribution explains the working principle of a SiPM and their basic characteristics. Futhermore, characterization results are presented.