GEANT4 Modeling of the Bremsstrahlung Converter Optimal Thickness for Studying the Radiation Damage Processes in Organic Dyes Solutions

The study of the processes occurring in a matter when ionizing radiation passes through is important for solving various problems. Examples such problems are applied and fundamental field physics, chemistry, biology, medicine dosimetry. This work dedicated to computer modeling parameters tungsten converter studying damage during interaction with solutions organic dyes. Simulation was carried out order determine optimal thickness under predetermined experimental conditions. Experimental conditions include: energies type primary particles, intensity, target dimensions, relative position source target. studies dyes planned be using linear electron accelerator "LINAC-300" National Scientific Center "Kharkov Institute Physics Technology". Electrons 15 MeV energy chosen as particles. electrons irradiated substances studied first series experiments. Investigations gamma quanta will second used generate flux bremsstrahlung rays. One problem determination at which maximal front At same time, flow positrons should low possible. Another task identify possibility determining amount material by Geant4-modeling method. Radiation substance can occur due effect bremsstrahlung, well positrons. Computational experiments were values – from 0 mm (no converter) 8 step 1 mm. A detailed analysis obtained data has been performed. As result analysis, value obtained. maximum 2 But crossing boundaries does not significantly affect computational experiment Monte Carlo program C++ that uses Geant4 toolkit developed perform calculations. operates multithreaded mode. mode necessary reduce computation time large number electrons. G4EmStandardPhysics_option3 model PhysicsList calculations educational computing cluster Department Technology V.N. Karazin Kharkiv University.