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Control of the sawtooth instability by electron cyclotron heating and current drive In the TCV and ASDEX Upgrade tokamaks

Funded under: FP5-EAECTP C


Recently, there has been increased interest in avoiding the destabilization of NTMs by controlling the sawtooth instability, which frequently provides a large enough seed island to trigger the growth of the TM. Electron cyclotron heating (ECH) and current drive (ECCD) are prime candidates for such control as the all important deposition location can be adjusted using external control parameters alone. Sawtooth control studies have been carried out on the Tokamak à Configuration Variable (TCV) and ASDEX Upgrade tokamaks. The experiments and subsequent sawtooth period modelling help to determine the optimum locations for sawtooth period control and understand the mechanism by which this control is attained.

Additional information

Authors: MUCK A, Max-Planck-Institut fur Plasmaphysik, Euratom-IPP, Garching (DE);GOODMAN T P ET AL, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne (CH);MÜCK A, Max-Planck-Institut für Plasmaphysik, Euratom-IPP, Garching (DE);RYTER F, Max-Planck-Institut für Plasmaphysik, Euratom-IPP, Garching (DE);WESTERHOF E, FOM-Instituur voor Plasmafysica "Rijnhuizen", Association EURATOM-FOM, Nieuwegein (NL)
Bibliographic Reference: A paper presented at: 19th IAEA Fusion Energy Conference. Organised by: International Atomic Energy Agency (IAEA). Held at: Lyon, France, October 14-19 2002.
Availability: Available online at: Also published in EPFL Internal Report LRP 738/02, available free of charge from: École Polytechnique Fédérale de Lausanne, Ecublens, CH-1015 Lausanne. Fax: +41-21-6934747.
Record Number: 200315842 / Last updated on: 2003-01-31
Original language: en
Available languages: en