Retrieval of GammaCell 220 irradiator isodose curves with MCNP simulations and experimental measurements

Abstract

Gamma irradiator facilities can be used in a wide range of applications such as biological and chemical researches, sterilization of medical devices and products. Dose mapping must be performed in these equipments in order to establish plant operational parameters, as dose uniformity, source utilization efficiency and maximum and minimum dose positions. The isodoses curves are measured using dosimeters or computer simulations. This work evaluates the absorbed dose in the CDTN/CNEN GammaCell Irradiation Facility, using the Monte Carlo N-Particles (MCNP) code.

Assessing Radiation Hardness of Silicon Photonic Sensors

“…Following Rodrigues et al . 29 , aluminum and steel shells of 2 mm thickness each were implemented between the sources and the exposure chamber. The 60 Co emission spectrum was simplified to consist of two 1.25 MeV γ-rays.…”

Monte-Carlo techniques for radiotherapy applications I: introduction and overview of the different Monte-Carlo codes

“…MCNP has been applied to a wide range of medical physics problems 73 including the modelling of medical linear accelerators, [74][75][76][77][78] and imaging systems such as radiotherapy electronic portal imaging devices (EPIDs), [79][80][81] CT 82 and PET/CT. 83 MCNP has also been used to develop models for kV intraoperative radiotherapy, 84,85 Brachytherapy, [86][87][88] proton therapy 89,90 and gamma irradiator devices 91,92 including the Leksell Gamma Knife 93,94…”