МОДЕЛИРОВАНИЕ ИСТОЧНИКА НЕЙТРОНОВ НА ОСНОВЕ УСКОРИТЕЛЕЙ ЭЛЕКТРОНОВ В GEANT4

Abstract

Monte Carlo calculations with geant4 code provides a convenient tool for studying the parameters of neutron sources. The purpose of this work was simulation of the 30 to 140 MeV electron beam transport through a tungsten target with the geant4 program code. In addition, the neutrons yield produced in the target from the electron beam at the IREN JINR facility was studied. The geant4 program code correctly describes the neutron photoproduction process during the primary electron beam interactions with a tungsten target. To verify the cross sections in geant4 at high photon energies, the cross sections in the TALYS program code were calculated. Used cross sections are in good agreement with previous experimental data. The obtained photoneutron yield dependences from the electron energy for a target simulating an IREN facility are from 7.0·10-3 at 30 MeV to 4.2·10-2 neutrons per electron at 200 MeV.