A high-power X-band klystron

In order to reduce the size and weight of industrial-use linear electron accelerators, X-band RF power sources are needed to replace the conventional S-band sources. For this purpose, an X-band half-angle pulse klystron with a large power output (peak output: 4MW) was developed. Because of the higher power densities and electric-field intensities compared with S-band klystrons, special care was taken in designing the various components to withstand large powers. For this device, an operating frequency of 9.3 GHz, a pulse width of 5μs, and a peak output of 4.2MW (average output: 4.2kW) were achieved. (author)