Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 60: Astroteilchenphysik: Methoden III
T 60.3: Talk
Wednesday, March 27, 2019, 16:30–16:45, S12
Large-Size Composite SiPM Pixel Tests in the Imaging Camera of the MAGIC IACT — •Alexander Hahn1, Antonios Dettlaff1, David Fink1, Daniel Mazin1,2, Razmik Mirzoyan1, and Masahiro Teshima1,2 — 1Max-Planck-Institut für Physik, München, Deutschland — 2Institute for Cosmic Ray Research, the University of Tokyo, Tokyo, Japan
Silicon photomultipliers (SiPMs) are becoming increasingly popular as light detectors in Imaging Atmospheric Cherenkov Telescopes (IACTs). Yet, an in-situ performance comparison of SiPMs and photomultiplier tubes (PMTs) is missing. At the Max Planck Institute for Physics we built three prototype detector modules based on composite SiPM pixels. These modules are installed to one of the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes. The MAGIC camera structure allows the installation and parallel operation of up to six prototype detector modules at the rim of the existing PMT imaging camera. This outer rim is not part of the trigger, so to minimize the systematic effects on our performance comparison we installed one SiPM based prototype into the camera centre for a single night.
The collected data consist of artificial light pulses from a light flasher as well as real Cherenkov light from extensive air showers in the atmosphere.
In this talk, we will present a comparison of our SiPM-based prototype light detector modules to the existing modules of the PMT imaging MAGIC camera.