Calibration system correction factor for measuring the reference air kerma rate (RAKR) applied to high dose rateIr sources (HDR).

The aim of this study was to use computer simulation to analyze the impact of the aluminum fixing support on the Reference Air Kerma (RAK), a physical quantity obtained in a calibration system that was experimentally developed in the Laboratory of Radiological Sciences of the University of the State of Rio de Janeiro (LCR-UERJ). Correction factors due to scattered radiation and the geometry of theIr sources were also sought to be determined. The computational simulation was validated by comparing some parameters of the experimental results with the computational results.