Determining the energy dependence of a calibration coefficient $K_{Q,Q_{0}}$ for a thimble-ionization chamber using computer modeling

The energy dependence of a thimble-chamber calibration coefficient is modeled in this work according to beam quality using the Monte Carlo method. The maximums of the deviations were observed within the range of photon energies that correspond to the giant dipole resonance for light elements. The deviations may reach 10% at photon energies of up to 25 MeV.