Generation of localized lower-hybrid current drive by temperature perturbations

S. J. Frank, A. H. Reiman, N. J. Fisch, P. T. Bonoli

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

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 radiofrequency 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.

Original languageEnglish (US)
Article number096027
JournalNuclear Fusion
Volume60
Issue number9
DOIs
StatePublished - Sep 2020

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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