An injected electron collector

Abstract

The invention discloses an injected electron collector. The injected electron collector comprises an injected electron collection unit, a bias power supply unit, a data acquisition processing unit, and an adjusting unit. The injected electron collection unit is inserted in a device by a window of a tokamak device, and is capable of moving upwards and downwards in the device, and is used to collect injected electrons. The bias power supply unit is used to provide bias for the injected electrons, and is used to convey the injected electrons to the data acquisition processing unit. The data acquisition processing unit is used to acquire injected electron current, and is used to determine the number of the collected injected electrons according to the injected electron current. An electron injection source and an injector angle adjusting unit are used to adjust the electron density of the electron injection source and the injection angle of the electron drift injector in a self-adaptive manner according to the difference between the injected electron numbers in a fixed interval, and when the tokamak device has a maximum injection electron rate, the electron injection source has the optimal electron density and the electron drift injector has the optimal injection angle correspondingly.

Description

technical field [0001] The invention belongs to the technical field of collecting injected electrons of a tokamak device, and more particularly relates to an injected electron collector used for electron drift injection experiments of a tokamak device. Background technique [0002] In the research process of controllable nuclear fusion, it is of great significance to realize the low ring voltage start-up of the tokamak device, which can save the heating field volt-seconds consumed in the discharge start-up stage, thereby creating conditions for prolonging the plasma discharge duration , It can also reduce the requirements for the power supply of the heating field and save a lot of money. Especially for the current and next-generation large-scale superconducting tokamak devices, due to the requirements for the safe operation of superconducting poloidal field coils and the prevention of frequent quenching of superconducting coils, the impact of electron drift injection on redu...

AI Technical Summary

Problems solved by technology

Therefore, it is the key to realize electron drift injection to reduce ring voltage start-up by improving and obtaining accurate electron injection rate, as well as the optimal electron density of electron injection source and the optimal injection angle of electron drift injector at this electron injection rate. The injected electrons in the tokamak during electron drift injection must be collected; however, there is currently no device for collecting the drift injected electrons

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