Particle dynamics in linear accelerator with beam focusing by rf-field

Particle dynamics in the waveguide linear accelerator without focusing magnetic field has been investigated. To clarify optimum conditions for the beam passing simulation of the equation of motion in three-dimensional space taking into account the space charge has been conducted. Assuming that the Pierce electron gun has the cathode voltage of 50 kV and the accelerator operating frequency is equal to 2450 MHz determined have been optimum beam performances at the entrance to the accelerating waveguide, parameters of wave type transformer and laws of intensity and the wave phase velocity change along the accelerator. Calculations using the ES 1040 computer showed that at the accelerating waveguide length of 1-2 m and the existing limiting intensities of rf field the accelerated current at the outlet of electron linear accelerator with focusing rf field can reach 0.2-0.3 A. The calculations showed the expediency of chopper or prebuncher application in a such accelerator separated from the accelerating waveguide by the drift space