Physics Athens 2016

Input Particles

 Modelling of radiation source consists of sampling the required information about initial particles (type of particle, starting coordinates, direction cosines, energy, charge and particle weight) The linac can be divided into:  Upper part - components that remain fixed for all possible beams settings (Patient independent)  Lower part - beam modifiers (Patient dependent)   The upper part is modeled only once and a phase-space file is generated at the entrance of the lower part  This file is then used as an input for the MCTP calculation (the lower part and the patient are handled in one process)