Feb 15 – 19, 2016
Vienna University of Technology
Europe/Vienna timezone

Development of a composite large-size SiPM (assembled matrix) based modular detector cluster for MAGIC

Feb 19, 2016, 3:15 PM
20m
EI7 (Vienna University of Technology)

EI7

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Talk Semiconductor Detectors Plenary 5

Speaker

Mr Alexander Hahn (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany)

Description

The MAGIC collaboration operates two 17m diameter Imaging Atmospheric Cherenkov Telescopes (IACTs) on the Canary Island of La Palma. Each of the two telescopes is currently equipped with 1039 photomultiplier tubes (PMTs). Due to the advances in the development of Silicon Photomultipliers (SiPMs), they are becoming a widely used alternative to PMTs in many research fields including gamma-ray astronomy. Within the Otto-Hahn group at the Max Planck Institute for Physics in Munich, we are developing a SiPM based detector module for a possible upgrade of the MAGIC cameras and also for future experiments as, e.g., the Large Size Telescopes (LST) of the Cherenkov Telescope Array (CTA). Because of the small detector size (6mmx6mm) with respect to the 1-inch diameter PMTs currently used in MAGIC, we use a self assembled matrix of SiPMs to cover the same detection area. We developed an analog transistor circuit to sum up and amplify the SiPM signals of one pixel to a composite output without the drawback of summing the sensors capacitances. Existing non-imaging hexagonal light concentrators (Winston cones) used in MAGIC have been modified for the angular acceptance of the SiPMs using C++ based ray tracing simulations. The first prototype of our SiPM based detector module consists of seven channels and was installed into the MAGIC camera in May 2015. We will present the results of the first prototype and its performance as well as the status of the project and discuss its challenges.

Primary authors

Mr Alexander Hahn (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Dr Daniel Mazin (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany; Institute for Cosmic Ray Research (ICRR), Tokyo, Japan)

Co-authors

Mr Antonios Dettlaff (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr David Fink (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr Felix Grundner (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr Holger Wetteskind (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Prof. Masahiro Teshima (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany; Institute for Cosmic Ray Research (ICRR), Tokyo, Japan) Ms Priyadarshini Bangale (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Dr Razmik Mirzoyan (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr Ronald Maier (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr Serguei Podkladkin (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany) Mr Werner Haberer (Max Planck Institute for Physics (Werner-Heisenberg-Institut), Munich, Germany)

Presentation materials