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ID: 56298.0, MPI für Plasmaphysik / Articles, Books, Inbooks
ELM-free stationary H-mode plasmas in the ASDEX Upgrade tokamak
Authors:Suttrop, W.; Maraschek, M.; Conway, G. D.; Fahrbach, H.-U.; Haas, G.; Horton, L. D.; Kurki-Suonio, T.; Lasnier, C. J.; Leonard, A. W.; Maggi, C. F.; Meister, H.; Mück, A.; Neu, R.; Nunes, I.; Pütterich, T.; Reich, M.; Sips, A. C. C.; ASDEX Upgrade Team
Language:English
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Plasma Physics and Controlled Fusion
Journal Abbrev.:Plasma Phys. Control. Fusion
Volume:45
Start Page:1399
End Page:1416
Copyright:Copyright © Institute of Physics and IOP Publishing Limited 2003
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:ELM-free H-mode plasmas with stationary plasma density and radiation level are obtained in the ASDEX Upgrade tokamak with large clearance between the last closed flux surface and the wall, and neutral beam injection in a toroidal direction opposite to that of the plasma current. This behaviour is accompanied by a characteristic narrow-band magnetohydrodynamic (MHD) oscillation with clear harmonics up to n = 11 visible. This mode is localized in the plasma edge region. Conditions and properties of the stationary ELM-free phases and the edge MHD oscillation closely resemble that of the `quiescent H-mode' and the `edge harmonic oscillation' found in the DIII-D tokamak (Burrell K H et al 2002 Plasma Phys. Control. Fusion 44 A253). In addition, high-frequency MHD oscillations are found with an amplitude correlated with fluctuations of the divertor D intensity, suggesting a possible relevance of these modes for particle transport.
Free Keywords:DIII-D TOKAMAK, DOUBLE-BARRIER REGIME, CONFINEMENT, DISCHARGES, BEHAVIOR, PARTICLE
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/E2
External Affiliations:Euratom-TEKES Association, Helsinki University of Technology, PO Box 2200, FIN-02015 HUT, Finland; Lawrence Livermore National Laboratory Livermore, CA 94551-0808, USA; General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA; Associação EURATOM/IST, Centro de Fusão Nuclear, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
Identifiers:DOI:10.1088/0741-3335/45/8/302
URL:http://stacks.iop.org/0741-3335/45/1399
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