Cathode heater assembly for klystron electron gun
A technology of electron gun and klystron, which is applied in the direction of discharge tube solid thermionic cathode, klystron, electron tube with speed/density modulation electron flow, etc., can solve the problems of high heat conduction efficiency and large contact area, and reduce heat conduction , Improve thermal stability, not easily deformed
Pending Publication Date: 2022-08-09
NO 12 RES INST OF CETC
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Problems solved by technology
The traditional klystron electron gun cathode heater structure usually adopts a laminated heat shield structure and slots on the cathode base to reduce heat conduction. However, due to the large contact area, the heat conduction efficiency is still very high.
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[0037] In order to illustrate the present invention more clearly, the present invention will be further described below with reference to the preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0038] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the application and simplifying the description, Rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, it should...
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The embodiment of the invention discloses a cathode heater assembly for a klystron electron gun. The cathode heater assembly comprises a cathode base; the cathode is arranged at the top of the cathode base; the heater assembly is positioned in the cathode base; the heat shield is combined and fixed in the cathode base, and the heat shield is arranged below the heater assembly; the cathode base is arranged at the bottom of the cathode base; the cathode base is configured to reduce heat conduction of the heater assembly; the cathode base is of a basket-shaped structure and comprises a first ring body, a second ring body and a plurality of supporting rods arranged between the first ring body and the second ring body, and the two ends of each supporting rod are fixedly combined with the first ring body and the second ring body respectively; the first ring body and the second ring body are arranged in parallel and concentrically. The cathode base at the joint of the cathode heater assembly of the electron gun and the klystron cavity structure is designed into the basket-shaped structure, so that heat conduction is effectively reduced, the stability of the electron gun is improved, and the service life of the klystron is prolonged.
Description
technical field [0001] The invention relates to the technical field of high-power klystrons. More specifically, it relates to a cathode heater subassembly for a klystron electron gun. Background technique [0002] High-power klystron is a microwave vacuum device that converts electron injection energy into microwave energy based on the principle of velocity modulation. In high-power klystrons, due to the generation and formation of electron injection and the interaction between electron injection and microwave field, the dissipation of electron residual energy and the output of microwave energy are carried out in a space separated from each other, and its high frequency The interaction system is a separate resonant cavity, so it has the advantages of high power, high gain, high efficiency, high stability and long life. [0003] In microwave vacuum electronic devices such as klystrons, the electron beam is the medium for generating and amplifying microwave power, and the el...
Claims
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IPC IPC(8): H01J1/92H01J1/22H01J23/04H01J25/10
CPCH01J1/92H01J1/22H01J23/04H01J25/10
Inventor 朱培星万知之崔萌左向华
Owner NO 12 RES INST OF CETC