How THERMINATOR model works for BES program

Phenomenological models are used in simulations of heavy-ion collisions. They are based on Monte Carlo methods. One of these models is Therminator. In order to adapt THERMINATOR to energies from the Beam Energy Scan Program, some input parameters of the generator need to be estimated. Femtoscopy of two particles gives information about space-time characteristics of the source. To check compatibility between the experimental data and the data from the THERMINATOR correlation functions are calculated and the source sizes for identical pion are determined. The sizes calculated for various energies from the STAR experiment are compared with the STAR experimental data.