Calibration of a silicon photomultiplier camera matrix for a prototype of a small wide-angle imaging telescope (SIT)

Small Imaging Telescope (SIT) is a part of the TAIGA astrophysical complex located in the Tunka Valley (Republic of Buryatia, Russia), 50 km from Lake Baikal. The main feature of this prototype is the use of silicon photomultipliers (SiPM) as the sensitive element of the detection camera. This paper presents the results of the calibration procedure of the prototype camera in the context of the the dependence between "the number of photoelectrons and the number of ADC readings" at different temperatures and voltage values for individual SiPMs. The calibration was done using the data obtained by the telescope.