Apparatus and method for maintaining high performance plasma

Abstract

The invention provides a device and a method for maintaining high-performance plasma. The device comprises a central column; a vacuum container, which is arranged around the central column, and the vacuum container is used for containing the formed plasma; a plasma magnetic confinement system, which is used for limiting, forming and controlling the plasma in the vacuum container through a magnetic field, so that the plasma body forms a configuration with a plurality of fluids, wherein the multiple fluids form multiple layers from inside to outside, the fluid located on the outer layer surrounds the fluid located on the inner layer, and the adjacent fluids are at least partially overlapped. In the application, the configuration with a plurality of fluids is formed, wherein the high-energy electron fluid surrounds the thermionic fluid and the thermionic fluid, and the maintenance of the high-energy electron fluid enables the circumferential current to have a very large circumferential current outside the outermost closed magnetic surface, so that plasma turbulence and energy diffusion are effectively avoided; therefore, the recycling phenomenon of particles on the outermost closed magnetic surface is reduced, and the energy constraint capacity and stability of thermionic ions and thermionic electrons in the closed magnetic surface are effectively improved.

Description

technical field [0001] The present application belongs to the technical field of plasma confinement, and in particular relates to a device and method for maintaining high-performance plasma. Background technique [0002] The realization of controlled nuclear fusion may fundamentally solve the energy problem of mankind, so it has attracted extensive attention from many countries. There are two main ways to achieve controlled nuclear fusion, inertial confinement fusion and magnetic confinement fusion. Tokamak, which uses a magnetic field to confine high-temperature plasma, is considered to be the most promising device for achieving controlled nuclear fusion, and has achieved remarkable results in scientific and engineering research. However, the tokamak device itself has some deficiencies related to becoming a high-efficiency fusion core, and the more prominent ones are: a very low annular magnetic specific pressure value β (the ratio of the thermal energy of the plasma to th...

AI Technical Summary

Problems solved by technology

[0005] Although the spherical tokamak shows better MHD stability than the conventional tokamak, there are still various instabilities, such as the neoclassical tearing membrane (Neoclassical Tearing Mode or NTM) commonly found in tokamak devices, Instability Boundary Localized Modes (ELMs) Instability etc.

[0006] MHD instabilities limit the highest plasma parameters achievable for plasmas in tokamaks

For example, the maximum plasma circumferential current, the highest plasma pressure gradient and specific pressure, and the highest plasma density are limited, which in turn limits the technical parameter range of the tokamak plasma operation

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