KLYSTRON Russian patent published in 2006 - IPC H01J25/12 

FIELD: microwave engineering; heavy- and super-heavy-power floating-drift klystrons mainly used for superhigh-energy linear accelerators.

SUBSTANCE: proposed klystron incorporating provision for periodic electrostatic focusing of electron flow has vacuum enclosure accommodating electron gun, cavity resonators, and collector disposed along klystron axis, as well as diaphragms of periodic electrostatic focusing lenses disposed between adjacent cavity resonators and rigidly fixed on conducting rods. The latter are disposed in parallel with klystron axis between vacuum envelope and cavity resonators; they are fixed on electron-gun focusing electrode, electrically connected to the latter and to cathode, and electrically insulated from vacuum envelope and from cavity resonators. Output cavity resonator is enclosed by magnetic focusing system installed beyond vacuum section of klystron to form long-focus magnetic lens. Butt-end section of klystron is provided with optical window for passing laser beam to cathode that functions as photocathode.

EFFECT: enhanced electric strength at small transversal dimensions.

11 cl, 5 dwg