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research article

Integrated real-time control of MHD instabilities using multi-beam ECRH/ECCD systems on TCV

Felici, F.
•
Goodman, T. P.
•
Sauter, O.
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2012
Nuclear Fusion

Simultaneous real-time control of multiple MHD instabilities is experimentally demonstrated in the TCV tokamak. Multiple sources of EC heating and current drive, injected through real-time controlled launchers, are used to stabilize 3/2 and 2/1 neoclassical tearing modes (NTMs) rapidly after their appearance. Control of the sawtooth instability using a new sawtooth-pacing technique is demonstrated, providing precise control of the time of appearance of the sawtooth crash. Efficient NTM preemption can then be performed by applying pulsed power on the mode rational surface at the time of the seed-island generating sawtooth crash. These three elements are combined into one integrated control system which can simultaneously control the sawtooth period, preempt the formation of NTMs and suppress these if they appear.

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Type
research article
DOI
10.1088/0029-5515/52/7/074001
Web of Science ID

WOS:000306104200002

Author(s)
Felici, F.
Goodman, T. P.
Sauter, O.
Canal, G.
Coda, S.
Duval, B. P.
Rossel, J. X.
Date Issued

2012

Publisher

IOP Publishing Ltd

Published in
Nuclear Fusion
Volume

52

Article Number

074001

Subjects

Cyclotron Current Drive

•

Neoclassical Tearing Modes

•

H-Mode

•

Diii-D

•

Sawtooth Period

•

Tokamak

•

Stabilization

•

Discharges

•

Beta

•

Plasmas

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

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Available on Infoscience
August 3, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/84407
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