Device for cleaning first mirror for tokamak device by direct-current cascade arc plasma torch

Abstract

The invention provides a device for cleaning a first mirror for a tokamak device by a direct-current cascade arc plasma torch. The device for cleaning the first mirror for the tokamak device by the direct-current cascade arc plasma torch comprises a cascade arc plasma torch generation system, a cooling water supplying system, a supporting system and a reflectivity detection system, wherein the cascade arc plasma torch generation system comprises a vacuum chamber, a cascade source, a direct-current power supply, a vacuum unit, a gas supply unit and a cooling unit; the cascade source is arranged at one end of the vacuum chamber; the direct-current power supply is electrically connected with the cascade source; the gas supply unit is connected with the cascade source through a pipeline; the vacuum unit is connected with the vacuum chamber; the cooling unit is arranged in the cascade source. The device for cleaning the first mirror for the tokamak device by the direct-current cascade arc plasma torch is simple, reasonable and compact in structure; the device is based on a direct-current cascade arc plasma torch technique; on the premise that an impurity is not introduced, the large-area and uniform cleaning of an impurity sedimentary formation on the surface of a sample of the first mirror can be realized; the impurity sedimentary formation is removed quickly.

Description

technical field [0001] The invention relates to magnetic confinement nuclear fusion technology, in particular to a device for cleaning the first mirror of a tokamak with a DC cascaded arc plasma torch. Background technique [0002] In the experimental research of magnetic confinement nuclear fusion, the complexity of the structure of the tokamak device prevents certain parts of the plasma from being directly detected by optical signals. At this time, some mirrors are needed to transmit the optical detection signal to the detection system, and these mirrors are the first mirrors. [0003] During the discharge process of the tokamak device, in addition to generating high-temperature plasma with hundreds of millions of degrees, it is also accompanied by intense heat flux radiation, high-energy particle radiation and various ray radiation. At the same time, the dust and impurities generated by the interaction of high-temperature heat flow and high-energy particles with the firs...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to propose a device for cleaning the first mirror of the tokamak with a DC cascaded arc plasma torch in view of the above-mentioned problem of poor cleaning effect of the first mirror of the existing tokamak. The combined arc plasma torch technology can realize large-area and uniform cleaning of the impurity deposition layer on the surface of the first mirror sample without introducing impurities, and quickly remove the impurity deposition layer

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