SUPPESSION OF LARGE EDGE LOCALIZED MODES IN HIGH CONFINEMENT DIII-D PLASMAS WITH A STOCHASTIC MAGNETIC BOUNDARY
Journal Article
·
· PHYICAL REVIEW LETTERS
OSTI ID:821820
OAK-B135 A stochastic magnetic boundary, produced by an externally applied edge resonant magnetic perturbation, is used to suppress large edge localized modes (ELMs) in high confinement (H-mode) plasmas. The resulting H-mode displays rapid, small oscillations with a bursty character modulated by a coherent 130 Hz envelope. The H-mode transport barrier is unaffected by the stochastic boundary. The core confinement of these discharges is unaffected, despite a three-fold drop in the toroidal rotation in the plasma core. These results demonstrate that stochastic boundaries are compatible with H-modes and may be attractive for ELM control in next-step burning fusion tokamaks.
- Research Organization:
- GENERAL ATOMICS (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- AC03-99ER54463
- OSTI ID:
- 821820
- Journal Information:
- PHYICAL REVIEW LETTERS, Journal Name: PHYICAL REVIEW LETTERS
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:21378034
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Mon Oct 18 00:00:00 EDT 2004
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OSTI ID:15014746
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Fri Aug 01 00:00:00 EDT 2003
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OSTI ID:821591