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An Electron Linear Accelerator Diode Electron Gun with Replaceable Cathode

A technology of linear accelerators and electron guns, applied in the direction of electrical components, accelerators, etc., can solve the problems of non-replaceable cathodes and affecting the service life of electron guns, and achieve the effects of reducing equipment use costs, preventing high-voltage creepage ignition, and reducing costs

Active Publication Date: 2018-04-03
ZHOUSHAN LEIDA ELECTRICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of electron gun can overcome the problem of unstable cathode bombardment power and prolong the service life of the electron gun, but its cathode is also non-replaceable. After the cathode is damaged, the entire electron gun can only be scrapped, which greatly affects the service life of the electron gun.

Method used

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  • An Electron Linear Accelerator Diode Electron Gun with Replaceable Cathode
  • An Electron Linear Accelerator Diode Electron Gun with Replaceable Cathode

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 , 2 Shown, a kind of electron linear accelerator two-pole electron gun that the cathode can be replaced, comprises the ceramic tube casing 1 of electron gun, base 4, connecting tube 12, anode 2, cathode support 5, cathode 3, upper electrode 7, lower electrode 8 and collector Beam pole 6 etc., base 4 sealing cover is arranged on the upper end of ceramic cylinder shell 1, connecting cylinder 12 is connected with the lower end of ceramic cylinder shell 1 sealingly, is wound with silicone tape 1.1 on the outer surface of ceramic cylinder shell 1, ceramic cylinder shell 1 and The joints of the base 4 and the connecting cylinder 12 are poured with silicone rubber 13, which not only prevents high-voltage creepage, but also has the effect of covering the weld marks and beautifying the appearance. At the center position, the u...

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Abstract

The invention provides an electron linear accelerator diode electron gun with a replaceable cathode. The electron linear accelerator diode electron gun comprises an anode, a cathode, a ceramic cylinder shell and a base of the electron gun. The anode is fixed in an anode flange. The cathode is installed in a beam forming electrode. The base covers the upper end of the ceramic cylinder shell. A cathode column is axially arranged in the ceramic cylinder shell. The upper end of the cathode column and the base are detachably connected, and the lower end and the upper end of the beam forming electrode are detachably connected. An upper electrode and a lower electrode which are mutually detachably connected are coaxially arranged in the cathode column. The upper end of the cathode is connected with the lower electrode through a cathode lead-out wire. The upper electrode penetrates through the base to be connected with a high voltage power supply through a connecting post. A silica gel band winds the external surface of the ceramic cylinder shell. The connecting part of the base and the ceramic cylinder shell is provided with silicone rubber used for preventing high voltage creepage through pouring. The electron linear accelerator diode electron gun is reasonable in structure, the replaceable cathode is convenient and the electron gun is stable and reliable in working so that the service life can be greatly prolonged, equipment use cost can be reduced and the effect of preventing high voltage creepage can also be realized.

Description

technical field [0001] The invention belongs to the technical field of electron accelerators, in particular to a two-pole electron gun of an electron linear accelerator with a replaceable cathode. Background technique [0002] The electron gun is a very important part of the electron linear accelerator, and its working parameters and technical indicators have a great influence on the performance of the accelerator. The electron gun is a consumable electric vacuum device with a lifespan, usually with a lifespan of thousands of hours, and an electron gun worth more than 100,000 yuan can only be scrapped when replaced, which increases the cost of equipment use. The working voltage of the electron gun is 50-80KV. The main reason for scrapping is the damage of the cathode assembly and the leakage of ceramics. Usually, the damage of the cathode is irreversible. The failure of the ceramic part is generally caused by the residual stress at the welding point or high-voltage creepage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H7/22
CPCH05H7/22
Inventor 陆锐锋成军虞强
Owner ZHOUSHAN LEIDA ELECTRICAL TECH
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