Improvement of output characteristics of a relativistic magnetron by creating asymmetric radio-frequency magnetic fields.

Asymmetric magnetic field geometry is explored by inserting three metal tuners asymmetrically into the resonators of the A6 magnetron. The authors investigate the operating characteristics of a relativistic magnetron with asymmetrically perturbed radio-frequency (rf) magnetic fields caused by metal tuners using a three dimensional, electromagnetic particle-in-cell code MAGIC3D. By configuring perturbed rf magnetic fields, the operating characteristics of a relativistic magnetron are superior compared to those using uniform rf magnetic fields. Most significantly, by creating asymmetrically perturbed rf magnetic fields, the output power of the A6 magnetron increased by about 40% compared to the case of uniform rf magnetic fields. [ABSTRACT FROM AUTHOR]