PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Gamma-Ray Astronomy. GA-instrumentation
Development of a strategy for calibrating the novel SiPM camera of the SST-1M telescope proposed for the Cherenkov Telescope Array
I. Al Samarai,* C.M. Alispach, F.R. Cadoux, V. Coco, D. Della Volpe, Y. Favre, T. Montaruli, V. Sliusar, T.R. Njoh Ekoume, I. Troyano Pujadas, E. Lyard, A. Neronov, E. Mach, J. Michalowski, J. Niemiec, J. Rafalski, K. Skowron, M. Stodulska, M. Stodulski, T. Bulik, M. Grudzinska, M. Jamrozy, M. Ostrowski, L. Stawarz, A. Zagdanski, K. Zietara, P. Pasko, K. Seweryn, J. Borkowski, R. Moderski, J. Kasperek, P. Rajda, D. Mandat, M. Pech, P. Schovanek, P. Travnicek on behalf of the CTA SST-1M Project
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
CTA will comprise a sub-array of up to 70 small size telescopes (SSTs) at the southern array. The
SST-1M project, a 4 m-diameter Davies Cotton telescope with 9 degrees FoV and a 1296 pixels
SiPM camera, is designed to meet the requirements of the next generation ground based gammaray
observatory CTA in the energy range above 3 TeV. Silicon photomultipliers (SiPM) cameras
of gamma-ray telescopes can achieve good performance even during high night sky background
conditions. Defining a fully automated calibration strategy of SiPM cameras is of great importance
for large scale production validation and online calibration. The SST-1M sub-consortium
developed a software compatible with CTA pipeline software (CTApipe). The calibration of the
SST-1M camera is based on the Camera Test Setup (CTS), a set of LED boards mounted in front
of the camera. The CTS LEDs are operated in pulsed or continuous mode to emulate signal and
night sky background respectively. Continuous and pulsed light data analysis allows us to extract
single pixel calibration parameters to be used during CTA operation.
DOI: https://doi.org/10.22323/1.301.0800
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