Despite high demonstrated efficiency, lower-hybrid current drive (LHCD) has not been considered localized enough for neoclassical tearing mode (NTM) stabilization in tokamaks. This assessment must be reconsidered in view of the RF current condensation effect. We show that an island with a central hot spot induces significant localization of LHCD. Furthermore, in steady state tokamaks where a significant amount of current is provided by LHCD, passive stabilization of NTMs may occur automatically, particularly as islands become large, without requiring precise aiming of the wave power.

中文翻译：

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通过温度扰动产生局部低混合电流驱动

尽管已证明效率很高，但低混合电流驱动 (LHCD) 还没有被认为足够本地化以实现托卡马克中的新古典撕裂模式 (NTM) 稳定。鉴于 RF 电流冷凝效应，必须重新考虑此评估。我们表明，具有中心热点的岛屿会导致 LHCD 的显着定位。此外，在 LHCD 提供大量电流的稳态托卡马克中，NTM 的被动稳定可能会自动发生，特别是当岛屿变大时，不需要精确瞄准波浪功率。