Sawtooth and Triggering Mechanism for Tearing Modes on the Tokamak a Configuration Variable

ORAL

Abstract

The onset and sawtooth triggering mechanisms for Tearing Modes (TMs) has been extensively investigated during recent experimental campaigns on the Tokamak a Configuration Variable. The main long-term aim of this work is to provide understanding of the relation between sawteeth and TMs so that reliable real-time schemes can be devised for combined sawtooth and TM control in burning plasma experiments such as ITER. Hence, our work has focused on studying the dynamical relation between sawtooth crash and subsequent onset of TMs, sometimes leading to disruptions, using control techniques for the duration of the sawtooth period and the TM seeding mechanism via real-time pacing and localized electron cyclotron heating and current drive.

*This work is partly funded by the Fonds National Suisse de la Recherche Scientifique.

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Authors

  • D. Testa

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland
    • CRPP-EPFL

  • Gustavo Canal

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Stefano Coda

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Federico Felici

    • Eindhoven University of Technology, The Netherlands

  • Timothy Goodman

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Miho Janvier

    • LESIA, Paris, FR

  • Josef Kamleitner

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Donhyun Kim

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Holger Reimerdes

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland

  • Olivier Sauter

    • Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland