MONTE CARLO STUDY OF A MOSFET DETECTOR RESPONSE APPLIED TO X-RAY MICROBEAM RADIATION THERAPY

EGS4 Monte Carlo calculations of the dose deposited by array of microbeams, used for the Microbeam Radiation Therapy technique, are presented. The sensitivity of the results to the experimental parameters (incident beam energy, beam array dimensions and spacing) has been assessed. The effects of the photon beam polarization and energy cutoff have also been investigated. The response of a Silicon MOSFET detector of micrometric dimensions, placed inside a phantom made of two homogeneous media (water and PMMA), has been simulated.