MHD-FiT：基于 MHD 的托卡马克等离子体配置动态重建

IF 3.5 1区物理与天体物理 Q1 PHYSICS, FLUIDS & PLASMAS

Nuclear Fusion Pub Date : 2024-06-30 DOI:10.1088/1741-4326/ad5a22

T. Ahmadi, Y. Ono, Y. Cai and H. Tanabe

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引用次数: 0

摘要

本文介绍了一种重建动态运动托卡马克等离子体的二维磁通量轮廓和等离子体参数的创新方法。基于 Grad-Shafranov 方程的 EFIT 等传统方法适用于单一磁轴的等离子体平衡，而我们的方法则利用 MHD 方程，有望用于运动中或包含多个磁轴的托卡马克等离子体，因为这些等离子体可能并不严格遵守等离子体平衡。通过利用有限的边缘磁探针测量，我们开发的模型成功地重建了 TS-6 实验中两个合并等离子体环的时间演化。与直接二维磁探针在低β状态下的测量结果进行比较后发现，重建误差约为3%。

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MHD-FiT: MHD-based dynamic reconstruction of tokamak plasma configuration

This paper introduces an innovative method for reconstructing 2D magnetic flux contours and plasma parameters of dynamically moving tokamak plasmas. While conventional methods like EFIT, based on the Grad–Shafranov equation, are suitable for plasma equilibria with a single magnetic axis, our approach utilizes the MHD equations and shows promise for tokamak plasmas in motion or containing multiple magnetic axes, which may not strictly adhere to plasma equilibria. By utilizing limited edge magnetic probe measurements, our developed model successfully reconstructs the time evolution of two merging plasma toroids in the TS-6 experiment. A comparison with direct 2D magnetic probe measurements in a low β regime reveals a reconstruction error of approximately 3%.

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来源期刊

Nuclear Fusion 物理-物理：核物理

CiteScore

6.30

自引率

39.40%

发文量

411

审稿时长

2.6 months

期刊介绍： Nuclear Fusion publishes articles making significant advances to the field of controlled thermonuclear fusion. The journal scope includes: -the production, heating and confinement of high temperature plasmas; -the physical properties of such plasmas; -the experimental or theoretical methods of exploring or explaining them; -fusion reactor physics; -reactor concepts; and -fusion technologies. The journal has a dedicated Associate Editor for inertial confinement fusion.