JET托卡马克中电流密度剖面的实时识别：方法与验证
Real-time identification of the current density profile in the JET Tokamak: method and validation
AI总结：
本文提出了一种结合有限元方法、非线性不动点算法和最小二乘优化的实时数值识别方法，用于重构JET托卡马克等离子体电流密度剖面及其平衡，并通过与离线平衡代码和实时软件的对比验证了其有效性。
摘要：
托卡马克中等离子体磁平衡的实时重构是实现高性能运行的关键点。实际上，等离子体电流密度剖面的形状是重构的直接输出，并对达到稳态高性能运行模式具有主导作用。本文介绍了在托卡马克中数值识别等离子体电流密度及其平衡所遵循的方法。为了满足实时要求，开发了一个C++软件，该软件结合了有限元方法、与最小二乘优化过程相关联的非线性不动点算法。用于识别的实验测量包括真空室上的磁测量、多条弦上的干涉和偏振测量以及运动斯塔克效应。详细介绍了在JET托卡马克上重构的验证，无论是通过与“离线”平衡代码的比较，还是通过计算全局量的实时软件。
英文摘要：
The real-time reconstruction of the plasma magnetic equilibrium in a Tokamak is a key point to access high performance regimes. Indeed, the shape of the plasma current density profile is a direct output of the reconstruction and has a leading effect for reaching a steady-state high performance regime of operation. In this paper we present the methodology followed to identify numerically the plasma current density in a Tokamak and its equilibrium. In order to meet the real-time requirements a C++ software has been developed using the combination of a finite element method, a nonlinear fixed point algorithm associated to a least square optimization procedure. The experimental measurements that enable the identification are the magnetics on the vacuum vessel, the interferometric and polarimetric measurements on several chords and the motional Stark effect. Details are given about the validation of the reconstruction on the JET tokamak, either by comparison with 'off-line' equilibrium codes or real time software computing global quantities.
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。
