Experimental Study of the Emission Properties of Magnetron Injection Guns for High-Power Gyrotrons

The quality of the electron beam generated by a magnetron injection gun (MIG) is very important in order to ensure the excellent performance of high-frequency, high-power gyrotrons. A diagnostic device, operating at scaled down parameters, was recently developed at KIT in order to study the emission properties of various MIGs that are used with prototype modular short-pulse gyrotrons. Herein, we present the first experimental results that were obtained for electron guns that are used with coaxial 2 MW, 170 GHz gyrotrons.