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A power supply system for an electron gun power supply

A technology of power supply system and electron gun, which is applied in the direction of electrode devices and related components to achieve the effect of preventing surge voltage

Active Publication Date: 2016-12-28
CGN DASHENG ELECTRON ACCELERATOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high potential of the electron gun, ordinary power supply is impossible to achieve

Method used

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  • A power supply system for an electron gun power supply

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, a power supply system of an electron gun power supply includes an electron gun filament 1 and a filament transformer 2, the primary coil of the filament transformer 2 is connected to a high-voltage electrode, the secondary coil is connected with the electron gun filament 1, and the filament transformer 2 At least one potentiometer 3 is also connected between the primary coil and the high voltage electrode, and the resistance value of each potentiometer 3 is adjusted by an insulating rod 4 driven by a stepping motor 5 . The PLC control device of the accelerator control system controls the movement of the insulating rod 4, thereby realizing the adjustment of the resistance of the two potentiometers, and realizing the adjustment of the primary current of the filament transformer 2 by adjusting the two potentiometers 3 of the primary circu...

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Abstract

The invention discloses a power supply system for an electron gun power supply, comprising an electron gun filament and a filament transformer, the primary coil of the filament transformer is connected to a high-voltage electrode, the secondary coil is connected to the electron gun filament, and the primary coil of the filament transformer is connected to a high-voltage electrode. At least one potentiometer is also connected between the electrodes, and each potentiometer adjusts its resistance value through an insulating rod, and the insulating rod is driven by a stepping motor. The invention solves the problem that the ordinary power supply in the prior art cannot complete the power supply to the electron gun, and adjusts the primary current of the filament transformer by adjusting the two potentiometers of the primary circuit of the filament transformer to change the high-frequency current of the heating filament to adjust the electron current intensity of the accelerator. Objective: The electron beam current is easy to adjust, the electron beam current is stable, and the problem of supplying power to the electron gun at a high potential is well solved.

Description

technical field [0001] The invention relates to a power supply system, in particular to a power supply system for an electron gun power supply, and belongs to the technical field of industrial accelerators. Background technique [0002] The electron gun is an important part of the electrons generated by the industrial electron irradiation accelerator. The electron gun is located at the highest voltage of the accelerator terminal, and the highest voltage reaches one million electron volts. The free electrons in the cathode of the electron gun cannot escape the metal surface at normal temperature, only the free electrons with kinetic energy greater than the work function can escape. As the cathode temperature rises, the more electrons with kinetic energy greater than the work function in the metal, the more the emission current will be. The bigger it is, the more electrons it has. In order to obtain a large number of electrons for acceleration, a system for powering the elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/48
Inventor 朱锦华
Owner CGN DASHENG ELECTRON ACCELERATOR TECH
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