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FP7

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-Resonance Waves in Tokamaks

Funded under: FP7-EURATOM

Abstract

The sawtooth control mechanism in plasmas employing off-axis toroidally propagating ion cyclotron resonance waves in tokamaks is reinvestigated. The radial drift excursion of energetic passing ions distributed asymmetrically in the velocity parallel to the magnetic field determines stability when the rational q=1 surface resides within a narrow region centered about the shifted fundamental cyclotron resonance.

Additional information

Authors: GRAVES J P, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne (CH);CODA S, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne (CH);CHAPMAN I, EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon (GB);ERIKSSON L-G, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);JOHNSON T, Euratom-VR Association, Stockholm (SE)
Bibliographic Reference: An article published in: Physical Review Letters, Volume 102 (2009), 4 pp.
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1103/PhysRevLett.102.065005
Record Number: 200910388 / Last updated on: 2009-09-22
Category: PUBLICATION
Original language: en
Available languages: en