MEASUREMENT AND PRODUCTION OF ELECTRON DEFLECTION USING: A SWEEPING MAGNETIC DEVICE IN RADIOTHERAPY

摘要

The deflection and removal of electrons produce by a medical linear accelerator has been attained by Neodymium Iron Boron (NdFeB) permanent magnetic deflector device. This work was performed in an attempt to confirm the theoretical amount of electron deflection by monitoring the paths of pure electron beams using radiographic film. Calculated and measured effectiveness of the magnetic field to deflect electrons is performed using monoenergetic high-energy electron beams from 6 MeV to 20 MeV. Small field beams were deflected with magnetic fields with angles measured and calculated based on magnetic field strength produced by the clinical device.