Experimental study of two-beam resonator accelerator in a pulse mode

The results of experimental study of a pulse resonator accelerator with modulated beam excitation are presented. The main accelerator unit is a transforming resonator of complex form excited at the second azimuthal-symmetric type of oscillations, at that the accelerated and exciting beams crossing the gap respectively in the first and second antinodes of HF electric field. The two-beam scheme efficiency is determined by the resonator geometry and by the conditions of shaping and deceleration of auxiliary beam. In case of resonator unit excitation from external generator of 1.5 kW the following parameters are obtained: transformation coefficient approximately 80; excitation efficiency approximately 80%; excitation power 35 kW in the pulse of 300 μs duration at the repetition rate up to 6 Hz. Maximum energy of electron accelerated beam is 400 keV at pulse current of 20 mA