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Control of tearing modes in toroidal fusion experiments using "designer" error fields

Phys. Plasmas 8, 2760 (2001); doi:10.1063/1.1365956

Issue Date: June 2001

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Richard Fitzpatrick and Enrico Rossi
Institute for Fusion Studies, Department of Physics, University of Texas at Austin, Austin, Texas 78712
It is demonstrated that a magnetic island chain formed by a saturated tearing instability in a toroidal magnetic fusion device can lock to a special class of externally generated magnetic perturbation in a stabilizing phase. The theoretical apparatus needed to design such perturbations is outlined. These special perturbations—which are termed "designer" error fields—could be used to control the amplitudes of tearing modes in toroidal magnetic fusion experiments without the requirement of fast phase modulation. This type of control would be far more feasible in a reactor environment than conventional active feedback control via external magnetic perturbations. ©2001 American Institute of Physics.
History: Received 17 October 2000; accepted 20 February 2001
Permalink: http://link.aip.org/link/?PHPAEN/8/2760/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.35.Py
    Physics of plasmas and electric discharges Waves, oscillations, and instabilities in plasmas and intense beams Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.)
  • 52.55.-s
    Physics of plasmas and electric discharges Magnetic confinement and equilibrium
  • YEAR: 2001

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ISSN:
1070-664X (print)   1089-7674 (online)
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REFERENCES (25)
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