Electron gun power supply

Abstract

The invention relates to an electronic gun power supply, and the power supply comprises a direct-current high-voltage power supply and an electronic gun, wherein the direct-current high-voltage powersupply is electrically connected with a wiring end of the electronic gun; the power supply further comprises a power supply, a primary transformer and a secondary transformer. The power supply is electrically connected with the primary end of the primary transformer, a loop of the secondary end of the primary transformer is arranged in a short circuit mode, and a first electric field shielding cylinder is arranged outside the loop of the secondary end of the primary transformer. A loop at the secondary end of the primary transformer penetrates through the middle part of the annular iron core of the secondary transformer; a second electric field shielding cylinder is arranged at the periphery of the annular iron core of the secondary transformer; and the secondary end of the secondary transformer is electrically connected with the direct-current high-voltage power supply and the electronic gun. According to the invention, the quick response of the power of the power supply of the electron gun of the electron accelerator can be realized, and the electrical insulation between the heating power supply of the electron gun and a high-voltage electric field is realized by applying an electricity-magnetism-electricity conversion principle.

Description

technical field [0001] The invention relates to the electron accelerator industry, in particular to an electron gun power supply. Background technique [0002] When the electron accelerator is working, the electron gun needs to emit electrons. The necessary conditions for emitting electrons are: 1. Vacuum environment 2. Electric field force 3. Electron cloud generated on the surface of the emitting cathode. [0003] To generate electron clouds on the surface of the electron gun cathode, the conventional cathode body adopts direct or indirect heating, and the temperature change of the electron gun cathode can determine its emission amount under the rated electric field. Since the cathode of the electron gun is at the negative high voltage end, the power supply of the electron gun must be electrically insulated from the high voltage to ensure the safe operation of the equipment. [0004] At present, the power supply method widely used in the accelerator industry is that the s...

AI Technical Summary

Problems solved by technology

At present, the power supply method of changing the speed of the dragging motor and changing the power generation of the generator through the insulating rod, the response time of the change of the electron beam current is on the order of 1mA / S, which cannot guarantee the current industry needs with a high rate of change of the electron beam current

Images