Tore Supra中完全无感放电的MHD稳定性
MHD stability of fully non inductive discharges in Tore Supra
摘要：
在2003年的实验活动中，在Tore Supra成功地实现了可靠的完全无感放电的目标。优化这种情况的主要困难之一来自MHD稳定性问题。事实上，在这些实验中，LH天线获得的电流分布容易触发单或双撕裂模式。在某些条件下，放电进入永久MHD活动的制度。本文研究了在环形磁场B、等离子体总电流Ip和LH波的平均平行指数所限定的工作空间中，这些完全无感放电的MHD特性。线性MHD稳定性特性将操作空间划分为由最小安全系数的合理值分隔的区域。我们在我们的工作中讨论的良性MHD活动和MHD制度之间的过渡的本地化。
英文摘要：
During the 2003 experimental campaign, the aim of realizing reliable fully non inductive discharges has been successfully completed in Tore Supra. One the major difficulties in optimizing this scenario comes from MHD stability issues. Indeed, the current profile obtained with LH antennas in these experiments is prone to the triggering of single or double tearing modes. Under certain conditions, the discharges enters in a regime of permanent MHD activity. The present work investigates the MHD properties of these fully non-inductive discharges in the operational space defined by the toroidal magnetic field B, the total plasma current Ip, and the mean parallel index of LH waves . Linear MHD stability properties divide the operational space in regions separated by rational values of the minimum of the safety factor. We discuss in our work the localisation of the transition between benign MHD activity and the MHD regime.
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