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.; 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

doi:10.1088/0741-3335/45/8/302

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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: https://hdl.handle.net/11858/00-001M-0000-0027-2DC3-8 Version Permalink: https://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: Date issued: 2003

Publication Status: Issued

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Rev. Type: Peer

Identifiers: eDoc: 56298
DOI: 10.1088/0741-3335/45/8/302
URI: http://stacks.iop.org/0741-3335/45/1399

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Title: Plasma Physics and Controlled Fusion

Alternative Title : Plasma Phys. Control. Fusion

Source Genre: Journal

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Pages: - Volume / Issue: 45 Sequence Number: - Start / End Page: 1399 - 1416 Identifier: -