We discuss a program to develop a 50 MW X-band frequency-doubler magnicon amplifier at 11.4 GHz, using a 200 A, 500 keV electron beam produced by a cold-cathode diode on the NRL Long-Pulse Accelerator Facility. The main application is to powering linear accelerators. A study of the gain between two deflection cavities, the first driven by an external source, is under way.
S. H. Gold,
"Second harmonic magnicon amplifier experiment", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19290W (14 December 1992); doi: 10.1117/12.2298149; https://doi.org/10.1117/12.2298149