Manufacture of CEPC 650MHz 800kW CW Klystron

This paper describes the manufacture process of CEPC 650MHz 800kW continuous wave klystron. Klystron mainly includes electron gun, high frequency cavities, output window, collector, etc. Aerospace Information Research Institute, Chinese Academy of Sciences (AIR) has completed the design review of klystron, structural optimization, machining, cavity cold test, component welding, electron gun degassing, and klystron assembling. Now the first klystron has been manufactured.