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research article

Sawtooth pacing by real-time auxiliary power control in a tokamak

Goodman, T. P.  
•
Felici, F.  
•
Sauter, O.  orcid-logo
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2011
Physical Review Letters

In the standard scenario of tokamak plasma operation, sawtooth crashes are the main perturbations that can trigger performance-degrading, and potentially disruption-generating, neoclassical tearing modes. This Letter demonstrates sawtooth pacing by real-time control of the auxiliary power. It is shown that the sawtooth crash takes place in a reproducible manner shortly after the removal of that power, and this can be used to precisely prescribe, i.e., pace, the individual sawteeth. In combination with preemptive stabilization of the neoclassical tearing modes, sawtooth pacing provides a new sawtooth control paradigm for improved performance in burning plasmas.

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Type
research article
DOI
10.1103/PhysRevLett.106.245002
Web of Science ID

WOS:000291608700004

Author(s)
Goodman, T. P.  
Felici, F.  
Sauter, O.  orcid-logo
Graves, J. P.
Corporate authors
TCV team
Date Issued

2011

Publisher

American Physical Society

Published in
Physical Review Letters
Volume

106

Issue

24

Article Number

245002

Subjects

real-time control

•

nuclear fusion

•

TCV

•

sawtooth instability

•

ITER

•

ECH

•

ECCD

•

sawteeth

Note

© 2011 American Physical Society

URL

URL

http://crpplocal.epfl.ch/pinboard/jpapers/1102205.pdf
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CRPP  
SPC  
Available on Infoscience
June 15, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/68712
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