Design of X-band 20-MW Klystron

The market of the high power X-band klystron is expanding these days. CETD (Canon Electron Tubes & Devices co., ltd.) is developing a new X-band 20-MW klystron for industrial and scientific applications. The output power of 20 MW covers the gap between about 10 and 50 MW, which gives klystron users new choice. The klystron was designed based on our experience of the existing X-band 6-MW klystron. The electron gun and the electromagnet were newly designed. To decrease the electric field strength in the output section, the 3-cell output cavity was used. In this report, we show the specifications and design details of the klystron.