Expected Characteristics of the TAIGA–IACT Cherenkov Telescope Equipped with SiPM Detectors

Results are presented from Monte Carlo calculations of the effective areas and count rates of the TAIGA–IACT Cherenkov telescope with an upgraded SiPM OnSemi MicroFJ-60035 camera equipped with SL 290–590 and SL 280–390 filters. It is shown that the threshold energy (by triggering cosmic gamma-quanta) of the TAIGA–IACT telescope with a SiPM camera and an SL 290–590 filter is ≈0.4 TeV, slightly lower than that of the current TAIGA–IACT configuration with a PMT camera (0.5 TeV). The threshold energy of the TAIGA–IACT telescope with a SiPM camera and an SL 280–390 filter is ≈0.7 TeV, which is quite acceptable for Cherenkov telescopes with a mirror area of 10 m². These results, plus the expected stability of the SiPM design with excessive illumination and the ability to use UV filters (which allow observations at twilight and on moonlit nights without raising the trigger threshold signal appreciably), indicate that the TAIGA–IACT telescope with a SiPM camera is a promising instrument for observing cosmic gamma radiation in the TeV range.