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Abstract

The article presents experimental and theoretical investigations on the dynamics of sawteeth and neoclassical tearing modes in tokamak plasmas. The main findings of these investigations are:

-The experimental validation, on the basis of FTU and TCV data, of a model for the prediction of the sawtooth period and amplitude.

-The importance of diamagnetic effects in determining the threshold for sawtooth crashes and the rotation of non-linear tearing modes.

-A clarification of collision-less reconnection processes, in particular the role of phase mixing in association with magnetic island growth and saturation in dissipationless regimes.

The interplay between ECRH and macroscopic island dynamics is also discussed. cussed.

Additional information

Authors: PORCELLI F, Politecnico di Torina, Istituto Nazionale Fisica della Materia and Dipartimento di Energetica (IT), Massachusetts Institute of Technology, Plasma Science and Fusion Center, Cambridge (US);AIROLDI A ET AL, Instituto di Fisica del Plasma, Milan (IT);ANGIONI C ET AL, École Polytechnique fédérale de Lausanne, Centre de Recherches en Physique des Plasmas, Lausanne (CH);BURATTI P, Centro Ricerche Energia Frascati (IT);TUDISCO O, Centro Ricerche Energia Frascati (IT);CALIFANO F, Istituto Nazionale Fisica della Materia and Dipartimento di Fisica, Università degli Studi di Pisa (IT);PEGORARO F, Istituto Nazionale Fisica della Materia and Dipartimento di Fisica, Università degli Studi di Pisa (IT);GRASSO D, Politecnico di Torina, Istituto Nazionale Fisica della Materia and Dipartimento di Energetica (IT);OTTAVIANI M, CEA Cadarache, Département de Recherche sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);ROSSI E, University of Texas at Austin, Institute for Fusion Studies (US);TEBALDI C, Università di Lecce, Dipartimento di Mathematica (IT)
Bibliographic Reference: An article published in: Nuclear Fusion, Vol.41, No.9 (2001), pp.1207-1218
Record Number: 200114044 / Last updated on: 2001-11-14
Category: PUBLICATION
Original language: en
Available languages: en
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