Edge localized mode control with an edge resonant magnetic perturbation

Research output: Contribution to journalArticle


  • R. A. Moyer
  • T. E. Evans
  • T. H. Osborne
  • P. R. Thomas
  • M. Becoulet
  • J. Harris
  • K. H. Finken
  • J. A. Boedo
  • E. J. Doyle
  • M. E. Fenstermacher
  • P. Gohil
  • R. J. Groebner
  • G. L. Jackson
  • R. J. La Haye
  • C. J. Lasnier
  • A. W. Leonard
  • G. R. McKee
  • H. Reimerdes
  • T. L. Rhodes
  • D. L. Rudakov
  • M. J. Schaffer
  • P. B. Snyder
  • M. R. Wade
  • G. Wang
  • J. G. Watkins
  • W. P. West
  • L. Zeng

Research units

  • Lawrence Livermore National Laboratory
  • General Atomics
  • CEA Cadarache Euratom Association
  • Australian National University
  • Jülich Research Centre
  • University of California at Los Angeles
  • University of Wisconsin-Madison
  • Columbia University
  • Oak Ridge National Laboratory
  • Sandia National Laboratories


A low amplitude edge resonant magnetic field perturbation was used to suppress edge localized modes (ELM) with degrading core plasma confinement. The ELMs were replaced by packets of events with small amplitude, narrow radial extent, and a higher level of magnetic field and density fluctuations. It was found that changing the toroidal phase of the perturbation by 60° with respect to the best ELM suppression case reduces the EML amplitude and frequency by factors of 2-3 in the divertor. The results show that ELM can be suppressed by small edge resonant magnetic field perturbations.


Original languageEnglish
Article number056119
Pages (from-to)1-11
Number of pages11
JournalPhysics of Plasmas
Issue number5
Publication statusPublished - Apr 2005
MoE publication typeA1 Journal article-refereed

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