Modeling of Internal Injection and Beam Dynamics for High Power RF Accelerator

A new high power electron accelerator for industrial applications is developed in Novosibirsk. Main parameters of the accelerator are: operating frequency of 177 MHz, energy of electrons of 5 MeV, average beam power up to 300 kW. The accelerator consists of a chain of accelerating cavities, connected by the on-axis coupling cavities with coupling slots in the walls. A triode RF gun on the base of cathode-grid assembly placed on the wall of the first accelerating cell is used for internal injection of electrons. The paper presents the results of modelling and optimization of the accelerating structure, internal injection, and beam dynamics.