Performance of a small size telescope (SST-1M) camera for gamma-ray astronomy with the Cherenkov Telescope Array

The foreseen implementations of the Small Size Telescopes (SST) in CTA will provide unique insights into the highest energy gamma rays offering fundamental means to discover and under- stand the sources populating the Galaxy and our local neighborhood. Aiming at such a goal, the SST-1M is one of the...

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Published in:arXiv.org 2017-09
Main Authors: I Al Samarai, Alispach, C, Cadoux, F, Coco, V, D della Volpe, Favre, Y, Heller, M, Montaruli, T, Nagai, A, T R S Njoh Ekoume, I Troyano Pujadas, Lyard, E, Neronov, A, Walter, R, Sliusar, V, Mach, E, Michałowski, J, Niemiec, J, Rafalski, J, Skowron, K, Stodulska, M, Stodulski, M, Bulik, T, Grudzińska, M, Jamrozy, M, Ostrowski, M, Stawarz, Ł, Zagdański, A, Ziȩtara, K, Paśko, P, Seweryn, K, Borkowski, J, Moderski, R, Kasperek, J, Rajda, P, Mandat, D, Pech, M, Schovanek, P, Travnicek, P
Format: Article
Language:English
Subjects:
Astronomy
Cameras
Cotton
Galaxies
Gamma rays
Photomultiplier tubes
Telescopes
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Summary:The foreseen implementations of the Small Size Telescopes (SST) in CTA will provide unique insights into the highest energy gamma rays offering fundamental means to discover and under- stand the sources populating the Galaxy and our local neighborhood. Aiming at such a goal, the SST-1M is one of the three different implementations that are being prototyped and tested for CTA. SST-1M is a Davies-Cotton single mirror telescope equipped with a unique camera technology based on SiPMs with demonstrated advantages over classical photomultipliers in terms of duty-cycle. In this contribution, we describe the telescope components, the camera, and the trigger and readout system. The results of the commissioning of the camera using a dedicated test setup are then presented. The performances of the camera first prototype in terms of expected trigger rates and trigger efficiencies for different night-sky background conditions are presented, and the camera response is compared to end-to-end simulations.
ISSN:2331-8422