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Title: Effect of Heating on the Suppression of Tearing Modes in Tokamaks

Abstract

The suppression of (neoclassical) tearing modes is of great importance for the success of future fusion reactors like ITER. Electron cyclotron waves can suppress islands, both by driving noninductive current in the island region and by heating the island, causing a perturbation to the Ohmic plasma current. This Letter reports on experiments on the TEXTOR tokamak, investigating the effect of heating, which is usually neglected. The unique set of tools available on TEXTOR, notably the dynamic ergodic divertor to create islands with a fully known driving term, and the electron cyclotron emission imaging diagnostic to provide detailed 2D electron temperature information, enables a detailed study of the suppression process and a comparison with theory.

Authors:
; ; ; ; ;  [1]; ;  [2];  [3];  [4]
  1. FOM-Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, PO Box 1207, 3430 BE Nieuwegein (Netherlands)
  2. Department of Applied Science, University of California at Davis, Davis, California 95616 (United States)
  3. Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)
  4. Forschungszentrum Juelich GmbH, Institut fuer Plasmaphysik, Association EURATOM-FZJ, D-52425 Juelich (Germany)
Publication Date:
OSTI Identifier:
20861621
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevLett.98.035001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRONS; ELECTRIC CURRENTS; ELECTRON EMISSION; ELECTRON TEMPERATURE; ITER TOKAMAK; NEOCLASSICAL TRANSPORT THEORY; PLASMA HEATING; TEARING INSTABILITY; TEXTOR TOKAMAK

Citation Formats

Classen, I. G. J., Westerhof, E., Donne, A. J. H., Jaspers, R. J. E., Pol, M. J. van de, Spakman, G. W., Domier, C. W., Luhmann, N. C. Jr., Park, H. K., and Jakubowski, M. W. Effect of Heating on the Suppression of Tearing Modes in Tokamaks. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.035001.
Classen, I. G. J., Westerhof, E., Donne, A. J. H., Jaspers, R. J. E., Pol, M. J. van de, Spakman, G. W., Domier, C. W., Luhmann, N. C. Jr., Park, H. K., & Jakubowski, M. W. Effect of Heating on the Suppression of Tearing Modes in Tokamaks. United States. doi:10.1103/PHYSREVLETT.98.035001.
Classen, I. G. J., Westerhof, E., Donne, A. J. H., Jaspers, R. J. E., Pol, M. J. van de, Spakman, G. W., Domier, C. W., Luhmann, N. C. Jr., Park, H. K., and Jakubowski, M. W. Fri . "Effect of Heating on the Suppression of Tearing Modes in Tokamaks". United States. doi:10.1103/PHYSREVLETT.98.035001.
@article{osti_20861621,
title = {Effect of Heating on the Suppression of Tearing Modes in Tokamaks},
author = {Classen, I. G. J. and Westerhof, E. and Donne, A. J. H. and Jaspers, R. J. E. and Pol, M. J. van de and Spakman, G. W. and Domier, C. W. and Luhmann, N. C. Jr. and Park, H. K. and Jakubowski, M. W.},
abstractNote = {The suppression of (neoclassical) tearing modes is of great importance for the success of future fusion reactors like ITER. Electron cyclotron waves can suppress islands, both by driving noninductive current in the island region and by heating the island, causing a perturbation to the Ohmic plasma current. This Letter reports on experiments on the TEXTOR tokamak, investigating the effect of heating, which is usually neglected. The unique set of tools available on TEXTOR, notably the dynamic ergodic divertor to create islands with a fully known driving term, and the electron cyclotron emission imaging diagnostic to provide detailed 2D electron temperature information, enables a detailed study of the suppression process and a comparison with theory.},
doi = {10.1103/PHYSREVLETT.98.035001},
journal = {Physical Review Letters},
number = 3,
volume = 98,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}