Validation of the GATE Monte Carlo code for radiation therapy: Varian Clinac2300C/D

Our work aimed to validate a GATE Modeled of a linear accelerator Clinac2300C/D using GATE 8.0 for 6MV photon beam. The reference measurements were determined by ionization chambers (PTW 31014) and were compared with GATE results. To reduce the computing time, the simulation tasks were splitted into several jobs to run simultaneously in our local cluster. The simulation parameters of GATE were adjusted to validate the accelerator modeling from percentage depth dose and profiles in the reference conditions. Good agreement between simulations and measurements in water was observed. A gamma index comparison was performed, and more than 97% of the points for all simulations passed the 2%/2 mm gamma criterion.