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3D equilibrium reconstruction with islands

机译:3D与岛屿均衡重建

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This paper presents the development of a 3D equilibrium reconstruction tool and the results of the first-ever reconstruction of an island equilibrium. The SIESTA non-nested equilibrium solver has been coupled to the V3FIT 3D equilibrium reconstruction code. Computed from a coupled VMEC and SIESTA model, synthetic signals are matched to measured signals by finding an optimal set of equilibrium parameters. By using the normalized pressure in place of normalized flux, non-equilibrium quantities needed by diagnostic signals can be efficiently mapped to the equilibrium. The effectiveness of this tool is demonstrated by reconstructing an island equilibrium of a DIII-D inner wall limited L-mode case with an n = 1 error field applied. Flat spots in Thomson and ECE temperature diagnostics show the reconstructed islands have the correct size and phase.
机译:本文介绍了一种三维平衡重建工具的开发以及首次重建岛屿平衡的结果。午睡非嵌套平衡解算器已耦合到V3FIT 3D平衡重建代码。根据耦合的VMEC和SIESTA模型计算,通过找到一组最佳平衡参数,将合成信号与测量信号进行匹配。通过使用标准化压力代替标准化流量,诊断信号所需的非平衡量可以有效地映射到平衡。该工具的有效性通过在n=1误差场作用下重建DIII-D内壁受限L型情况的孤岛平衡来证明。汤姆森和ECE温度诊断中的平点显示重建的岛具有正确的大小和相位。

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