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arXiv physics/0411181physics.plasm-ph
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Equinox程序在托卡马克等离子体实时平衡和剖面重建中的新应用

New applications of Equinox code for real-time plasma equilibrium and profile reconstruction for tokamaks

Krzysztof Bosak, Jacques Blum, Emmanuel Joffrin

摘要:

最近开发的实时平衡代码Equinox [1]使用固定点算法[2]允许使用严格的分析方法实时识别主要的等离子体磁参数。该代码依赖于边界通量代码,提供真空容器第一壁上的通量值。通过最小二乘最小化从先前解获得的磁场与下一次测量之间的差异,代码识别非线性Grad-Shafranov方程的源项[3]。严格使用分析方程和灵活的算法提供了一个机会,可以将新的测量结果纳入稳定的磁平衡代码,并在保持相同物理模型的同时直接比较几个托卡马克之间的结果(即平衡代码中不需要铁模型)。JET和Tore Supra的平衡代码的成功实现已经发表[1],在本文中,我们展示了使用ITER几何的Equinox代码预测运行的初步结果。

英文摘要:

Recent development of real-time equilibrium code Equinox [1] using a fixed-point algorithm [2] allow major plasma magnetic parameters to be identified in real-time, using rigorous analytical method. The code relies on the boundary flux code providing flux values on the first wall of vacuum vessel. By means of least-square minimization of differences between magnetic field obtained from previous solution and the next measurements the code identifies the source term of the non-linear Grad-Shafranov equation [3]. The strict use of analytical equations together with a flexible algorithm offers an opportunity to include new measurements into stable magnetic equilibrium code and compare the results directly between several tokamaks while maintaining the same physical model (i.e. no iron model is necessary inside the equilibrium code). The successful implementation of this equilibrium code for JET and Tore Supra have been already published [1], in this paper, we show the preliminary results of predictive runs of the Equinox code using the ITER geometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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