ПРОЄКТУВАННЯ ТА ДОСЛІДЖЕННЯ НОВОЇ КОНФІГУРАЦІЇ ГАММА-СПЕКТРОГРАФА В ЕНЕРГЕТИЧНОМУ ДІАПАЗОНІ 0.511–5 МеВ

A novel composite gamma-ray detector based on three CsPbBr₃ crystals is proposed for the registration of quanta in the 0.1–5.0 MeV energy range. The central crystal simultaneously performs two functions: direct detection of gamma photons with energies up to 0.6 MeV and detection of annihilation-induced radiation in the 1.022–5.0 MeV range. The induced radiation is additionally recorded by two symmetrically positioned side crystals. Monte Carlo simulations of gamma-ray transport within the primary crystal were performed to determine the detector response function and the angular scattering angular distribution. The secondary radiation yield and its detectability by the side detectors were quantified. Characteristic time constants of the detection processes and saturation regimes were identified. Furthermore, the economic feasibility of the proposed detector configuration was assessed, demonstrating its potential for practical implementation in advanced gamma-ray spectrographs.