SiPM Based Focal Plane Instrumentation Prototype for the MAGIC Atmospheric Cherenkov Telescope

Fink, David J.; Hahn, Alexander; Mazin, D.; Hose, J.; Bangale, P.; Mirzoyan, R.

doi:10.22323/1.252.0006

Cited by 3 publications

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“…We developed three new light detector modules based on matrices of silicon photomultipliers of our own design. The aim was to achieve the same size of active area per pixel as the 1 inch PMTs used by MAGIC while maintaining fast signal response and good single photo-electron separation [6]. A first prototype, based on Excelitas SiPMs, was installed to the MAGIC-1 camera in 2015 [7].…”

Section: Introductionmentioning

confidence: 99%

Results of the Parallel Operation of Large-Size SiPM Detector Modules and PMTs in IACTs

Hahn

Dettlaff

Fink

et al. 2019

Proceedings of the 5th International Workshop on New Photon-Detectors (PD18)

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We developed three prototype detector modules using silicon photomultipliers (SiPMs) instead of conventional photomultiplier tubes (PMTs) at the Max Planck Institute for Physics. These prototypes are being used to compare the performance of SiPMs and PMTs during operation in the imaging cameras of the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes. The detector modules use either Hamamatsu, SensL or Excelitas devices. To achieve an active area comparable to a 1 inch PMT, we used a matrix of up to nine 6 × 6 mm 2 SiPMs, actively summing the individual signals while maintaining their fast signal response. The installation of the three prototype modules was completed in 2017. Since then they have been operated alongside the PMT based camera on nightly basis. The resulting data, comprised of Cherenkov light generated in extensive air showers (EAS) and artificial light pulses, is collected during telescope operation and used for performance comparisons. The MAGIC camera structure is suitable for the installation of up to six prototype detector modules next to the PMTsfor parallel operation. The outer camera rim, where we installed the SiPM based detector modules, is not included in the trigger. In order to gather data on operation in the trigger area one prototype module was installed to the camera centre for a single night in 2018. The two MAGIC telescopes utilized in this study are located on the Canary Island of La Palma. Each telescope consists of a 17 m diameter mirror dish and a camera composed of 1039 PMTs.

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Section: Introductionmentioning

confidence: 99%