Particle-in-cell code simulations and experiments of a rising-sun magnetron oscillator

A high power rising-sun magnetron oscillator is designed to operate at 9.5 GHz. A time evolved electron flow exhibits nine space charge spokes in the MAGIC3D PIC simulations, which confirms the /spl pi/-mode oscillation in the eighteen vanes rising-sun magnetron. We investigated five operating points for /spl pi/-mode by the use of the PIC code. Simulations show that the highest efficiency is 74% at 36 W, 6.5 kG corresponding to a magnetron power of 530 kW where the oscillation frequency and anode current are 9.502 GHz and 20 A, respectively. Comparison of MAGIC3D simulation results and experiments is presented.