Modelling of macroscopic magnetic islands in tokamaks

F. Porcelli, A. Airoldi, C. Angioni, A. Bruschi, P. Buratti, F. Califano, S. Cirant, I. Furno, D. Grasso, E. Lazzaro, A.A. Martynov, M. Ottaviani, F. Pegoraro, G. Ramponi, E. Rossi, O. Sauter, C. Tebaldi, O. Tudisco

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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: (1) The experimental validation, on the basis of FTU and TCV data, of a model for the prediction of the sawtooth period and amplitude; (2) the importance of diamagnetic effects in determining the threshold for sawtooth crashes and the rotation of non-linear tearing modes; (3) a clarification of collisionless 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.
Original languageEnglish
Pages (from-to)1207 - 1218
Number of pages12
JournalNuclear Fusion
Volume41
Issue number9
DOIs
Publication statusPublished - Sep 2001
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Porcelli, F., Airoldi, A., Angioni, C., Bruschi, A., Buratti, P., Califano, F., ... Tudisco, O. (2001). Modelling of macroscopic magnetic islands in tokamaks. Nuclear Fusion, 41(9), 1207 - 1218. https://doi.org/10.1088/0029-5515/41/9/309