Three Dimensional PIC Simulations of Novel Cathodes in the Michigan and AFRL Relativistic Magnetrons

Several novel shaped cathodes for a relativistic magnetron were modeled and optimized using a massively parallel electromagnetic particle-in-cell code ICEPIC. The effect of using a shaped cathode to enhance key performance parameters such as output power, power efficiency and impedance, was examined. In simulations we saw a dramatic increase in the range of magnetic field in which the magnetron functions, an increase of output power, an increase in efficiency, an elimination of mode competition, and immediate start up. See also ADM001963. Presented at the IEEE International Power Modulator Symposium and High-Voltage Workshop (27th) held in Washington, DC on 14-18 May 2006. Published in the IEEE International Power Modulator Symposium and High-Voltage Workshop Proceedings, p401-404, May 2006. The original document contains color images.