Design of a Magnetron with a Transparent Cathode for Experimental Demonstration of Fast Start of Microwave Oscillations

Summary form only given. To provide fast start microwave oscillatios in relativistic magnetrons, we proposed the transparent cathode, which is essentially a longitudinally slit cylindrical cathode comprising multiple strip electron emitters arranged in a circle. The fast start is achieved due to both cathode and magnetic priming, and the presence of strong electromagnetic field within the electron flow near the electron emitters. We have performed a comprehensive analysis of magnetron operation using computer simulations with the particle-in-cell code MAGIC that have showed the advantage of the transparent cathode implementation over the use of a conventional solid cylindrical cathode.