Abstract
New methods have been developed for monitoring the beam profile of electron accelerators. For electron energies above and below 3 MeV, the monitor utilizes the secondary emission from the probe and the partial absorption of the primary beam in it, respectively, and the probe consists of cooper wire or thin aluminum plate. The performance of the monitor was investigated with electron beams of a 15 MeV linear accelerator and a 2 MeV resonance transformer. The advantages of these methods are their simpleness and utility for high power accelerators.