Star simulator magnet based on cubic permanent magnet blocks and optimal arrangement method of star simulator magnet

Abstract

The invention provides a star simulator magnet based on cubic permanent magnet blocks and an optimized arrangement method of the star simulator magnet. Aiming at the characteristic that a three-dimensional magnet coil of the star imitator is complex in structure, the invention provides the star imitator magnet based on the cubic permanent magnet blocks which are uniformly magnetized and have the same magnetization intensity and the same size, the magnetization directions of the cubic permanent magnet blocks are fixed in limited alternative directions, and a dipole magnetic field provided by the permanent magnet blocks and the planar coil together form the magnetic field configuration of the star simulator, so that the device complexity of the star simulator and the difficulty and cost of magnet processing and mounting are reduced. The shape of the permanent magnet blocks can be replaced by other regular shapes, and the star simulator magnet is still formed by combining permanent magnet blocks with the same shape, the same size, uniform magnetization and the same magnetization intensity. Aiming at the magnet, the invention provides a permanent magnet arrangement optimization method of local compensation, and related optimization strategies such as threshold truncation and global fine tuning, which are used for optimization requirements of different magnetic field precisions, magnet usage and the like, so that a magnetic field meeting design requirements can be obtained.

Description

technical field [0001] The invention belongs to the field of magnetic confinement fusion energy, and relates to a magnetic confinement fusion device in a stellarator configuration, in particular to a stellarator magnet based on a cubic permanent magnet block and an optimal arrangement method thereof. Background technique [0002] The stellarator is a magnetic confinement fusion device that confines the plasma through a ring-shaped closed magnetic field configuration, and its magnetic field lines are in a circular spiral structure. The helical magnetic field is generated by an external magnet, and its magnetic surface structure is circumferentially asymmetric and has a twisted shape. The traditional stellarator uses an external coil to generate a magnetic field to form the magnetic field configuration of the stellarator. The coil must generate both a hoop magnetic field and a polar magnetic field. Therefore, the geometry of the traditional stellarator coil is very complicated...

AI Technical Summary

Problems solved by technology

The traditional stellarator uses an external coil to generate a magnetic field to form the magnetic field configuration of the stellarator. The coil must generate both a hoop magnetic field and a poloidal magnetic field. Therefore, the geometry of the traditional stellarator coil is very complicated. and manufacturing will bring great challenges, and the cost will also rise sharply

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