Method applicable to fusion reactor for triggering high-frequency edge localized mode by low-hybrid-wave modulation

Abstract

The invention discloses a method applicable to a fusion reactor for triggering a high-frequency edge localized mode by low-hybrid-wave modulation, which is characterized in that the current density orpressure intensity distribution of a stylobate region of the fusion reactor is directly or indirectly changed by using high-frequency, high-power and low-hybrid-wave modulation injection under the parameter background that a low-frequency large-amplitude edge localized mode breaks out in the operation of a high confinement mode of a Tokamak fusion reactor, a high-frequency edge localized mode istriggered, the amplitude of the edge localized mode and the harm brought about by the edge localized mode for a wall material of the fusion reactor are reduced. The method disclosed by the invention has flexibility in technical adjustment and adaptability for plasma parameter changes, and has little disturbance to plasma discharge during steady-state operations of the fusion reactor.

Description

technical field [0001] The invention relates to the technical field of operating methods of magnetic confinement fusion devices, in particular to a method for triggering high-frequency edge localized modes applicable to low-clutter modulation of fusion reactors. Background technique [0002] In 1982, the high confinement mode (H mode) operation of plasma was realized for the first time on the ASDEX tokamak device in Germany. This is an operating state that significantly improves the plasma energy confinement time compared to the low confinement mode. The typical feature of the H-mode operation of the tokamak is that the parameter distribution of the plasma edge region becomes steeper, forming a so-called "edge transport barrier", also called the base region. The existence of the base region, on the one hand, increases the overall confinement level of the plasma, and on the other hand, it collapses and forms an edge localized mode (ELM) after reaching the condition of MHD in...

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Problems solved by technology

[0005] Generally speaking, the above-mentioned currently developed technologies for controlling edge localized modes either have certain application limitations, such as the resonance magnetic disturbance technology is currently only effective within a certain range of tokamak boundary safety factors, or the The impact is relatively large, and there are still uncertainties in the application prospects of fusion reactors, such as impurity gas filling, etc.

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