Using Monte-Carlo methods for designing calibration facilities and radiation barriers

This project was devoted to simulation an radiation measurement in different radiation modalities: Calibration Facility, Nuclear Medicine and Radiotherapy. In a new radiation calibration facility (for radiation monitoring devises), the role of scattered radiation (due to finite size of the facility) was estimated. This was performed by using MCNP Version 4a (Monte-Carlo Simulation Software), Thermolimiinescent Detector (TLD) chips and a Cesium-137 calibration source. The results from MCNP and TLD were compared, they showed a deviation up to 6% and 10% respectively from the inverse square law.