The aim of work package 2 is to design and carry out Monte Carlo simulations of beam geometries and detector response, in order to inform the investigation of small radiation field characteristics in MRgXT and MRgPT.

The provided data of small radiation fields in MRgXT based on Monte Carlo simulations will be used as input for the determination of field characteristics in WP1. Furthermore, we will perform calculations of detector type specific output correction factors in small fields in the presence of magnetic fields. Additional simulations of field output factors and relative dose profiles will be determined as well to enable consistency checks with the measured correction factors in the evaluation in WP1. In connection to the work of WP 4, Monte Carlo simulations to assess radiation field characteristics and to support the development of dosimetry for MRgPT will also be performed.