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  ELM-free stationary H-mode plasmas in the ASDEX Upgrade tokamak

Suttrop, W., Maraschek, M., Conway, G. D., Fahrbach, H.-U., Haas, G., Horton, L. D., et al. (2003). ELM-free stationary H-mode plasmas in the ASDEX Upgrade tokamak. Plasma Physics and Controlled Fusion, 45, 1399-1416. doi:10.1088/0741-3335/45/8/302.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-2DC3-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-2DC4-6
Genre: Journal Article

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 Creators:
Suttrop, W.1, Author              
Maraschek, M.1, Author              
Conway, G. D.2, Author              
Fahrbach, H.-U.2, Author              
Haas, G.2, 3, Author              
Horton, L. D.2, Author              
Kurki-Suonio, T.4, Author
Lasnier, C. J.4, Author
Leonard, A. W.4, Author
Maggi, C. F.5, Author              
Meister, H.1, Author              
Mück, A.6, Author              
Neu, R.5, Author              
Nunes, I.4, Author
Pütterich, T.5, Author              
Reich, M.2, Author              
Sips, A. C. C.2, Author              
ASDEX Upgrade Team, Author  
Affiliations:
1Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              
2Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
3Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856318              
4Euratom-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, ou_persistent22              
5Experimental Plasma Physics 4 (E4), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856293              
6External Organizations, ou_persistent22              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
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 Rev. Type: Peer
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Title: Plasma Physics and Controlled Fusion
  Alternative Title : Plasma Phys. Control. Fusion
Source Genre: Journal
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Publ. Info: Copyright © Institute of Physics and IOP Publishing Limited 2003
Pages: - Volume / Issue: 45 Sequence Number: - Start / End Page: 1399 - 1416 Identifier: -