Travelling wave tube collector inner core structure

The utility model discloses a travelling wave tube collector inner core structure. A collector inner core is composed of three parts. The two ends of a second collector inner core unit in the middle are respectively connected to a first collector inner core unit and a third collector inner core unit respectively through a first ceramic chip and a second ceramic chip. The travelling wave tube collector inner core structure is advantageous in that electrons collected by the high-efficient travelling wave tube collector inner core are uniformly distributed on the inner surface of the collector inner core, heat is more uniformly radiated, the efficiency of a collector is improved through a three-stage voltage-reducing process, and heat loads of the collector are reduced at a certain degree; and besides, the collector inner core can be directly in contact with a fluorocarbon liquid phase used for cooling, so that processes of a conventional collector transferring heat through ceramic are decreased, the heat radiation area is increased, and heat radiation efficiency of the collector is improved. Furthermore, the high-efficient travelling wave tube collector inner core is of light weight, is applicable to a variety of equipment, and facilitates market popularization and application.