Method for frame mounting of non-intercepting gridded electron gun of klystron

A gate-controlled electron gun and no interception technology, which is applied in klystrons, electron tubes with velocity/density modulation electron flow, electron/ion guns of time-of-flight electron tubes, etc., can solve problems affecting electron emission characteristics, etc., to achieve Effects of reduced weight and volume, powerful functions, and reduced current

Inactive Publication Date: 2011-10-05
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

In the grid-controlled electron gun without interception, due to the introduction of the control grid, a large number of electrons will be intercepted by the grid, which will affect the electron emission characteristics. Higher precision and stabili

Method used

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  • Method for frame mounting of non-intercepting gridded electron gun of klystron
  • Method for frame mounting of non-intercepting gridded electron gun of klystron
  • Method for frame mounting of non-intercepting gridded electron gun of klystron

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[0041] Such as figure 1 Shown is a schematic diagram of the structure of a non-intercept grid-controlled electron gun for a klystron. The mechanical structure of the non-intercepted grid-controlled electron gun is mainly composed of six major components, namely the cathode thermal subassembly 01, the cathode thermal sub-supporting assembly 02, the grid control lead assembly 03, the insulation section assembly 04, the condenser electrode assembly 05, and the anode assembly 06. See Figure 2a , Figure 2b The main composition of the non-intercepting grid-controlled electron gun is that the shadow grid 01-01 made of molybdenum material is attached to the surface of the spherical barium tungsten cathode 01-02, and the cathode thermal subassembly 01 formed with the thermal element is fixed to the cathode thermal sub-supporting element 02 Above, the control grid 05-01 of molybdenum material is fixed in the condenser electrode 05-02 of oxygen-free copper material to form the condenser ...

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Abstract

The invention, which relates to the technology of an electron gun of a klystron, discloses a method for frame mounting of a non-intercepting gridded electron gun of a klystron. The method comprises the following steps: (a), respectively welding a heater-cathode assembly, a heater-cathode support assembly, a gridded lead assembly, an insulating segment assembly, a buncher assembly, and an anode assembly of an electron gun into a independent part; and (b), positioning, welding, and assembling the six parts in sequence by correlative dies. According to the method provided in the invention, the coaxiality of the frame mounting of the whole electron gun parts is ensured. Compared with a cathode control klystron that is used currently, the non-intercepting gridded klystron, which is constructedby the non-intercepting gridded electron gun assembly by the method provided in the invention, has advantages that an agility of a pulse width and a repetition period is allowed and a flexibility of a wave beam is obtained. Moreover, according to the invention, the radar becomes light and small; current provided by a modulator is reduced and the load of a switching tube is also reduced.

Description

technical field [0001] The invention relates to a mounting method for a grid-controlled electron gun without interception for a klystron. Background technique [0002] In the 21st century, new military revolutions are taking place in the world, and a new round of arms race is going on fiercely. Among them, the detection and guidance radars in the air defense and missile measurement systems of China are in an extremely important position. In order to meet the increasingly complex military needs, research institutions at home and abroad have made it an important goal to develop a radar system with flexible working methods and high mobility. In China, the non-intercept gate control technology is mainly used in traveling wave tubes, and its application in klystrons is still blank. At present, most of my country's existing national air defense radar transmitters use negative-controlled pulse klystrons, especially broadband klystrons, which can achieve perfect frequency agility t...

Claims

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Application Information

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IPC IPC(8): H01J9/00H01J25/10H01J23/06
Inventor 于晓娟张志强黄云平
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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