Neoclassical tearing modes and their controla)
Neoclassical tearing modes and their controla)
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DOI：
10.1063/1.2180747
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发表时间：
2005-10
影响因子：
2.2
通讯作者：
R. L. Haye
中科院分区：
文献类型：
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作者：
R. L. Haye
托卡马克中的主要压力极限是由新古典撕裂模（NTMs）的发生所设定的，该撕裂模由压力梯度驱动的“自举”电流的螺旋扰动所不稳定和维持。由此产生的磁岛打破了限制等离子体的磁表面。NTM是线性稳定但非线性不稳定的，并且通常需要“种子”来使亚稳态不稳定。在过去的十年中，NTM物理已经被研究，其影响被确定为许多托卡马克的性能下降。NTM物理的验证，抑制NTM和/或完全避免它们是积极研究和取得相当大进展的领域。最近的联合实验提供了新的见解的基础物理，播种，阈值缩放的NTMs。物理尺度对增加NTM的敏感性在ITER，基础的重要性，进一步研究和控制策略的发展。这些策略包括调节“锯齿”以减少播种，使用静态…
A principal pressure limit in tokamaks is set by the onset of neoclassical tearing modes (NTMs), which are destabilized and maintained by helical perturbations to the pressure-gradient driven “bootstrap” current. The resulting magnetic islands break up the magnetic surfaces that confine the plasma. The NTM is linearly stable but nonlinearly unstable, and generally requires a “seed” to destabilize a metastable state. In the past decade, NTM physics has been studied and its effects identified as performance degrading in many tokamaks. The validation of NTM physics, suppressing the NTMs, and/or avoiding them altogether are areas of active study and considerable progress. Recent joint experiments give new insight into the underlying physics, seeding, and threshold scaling of NTMs. The physics scales toward increased NTM susceptibility in ITER, underlying the importance of both further study and development of control strategies. These strategies include regulation of “sawteeth” to reduce seeding, using static...