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  Confinement physics of the advanced scenario with ELMy H-mode edge in ASDEX Upgrade

Peeters, A. G., Gruber, O., Günter, S., Kaufmann, M., Meister, H., Pereverzev, G. V., et al. (2002). Confinement physics of the advanced scenario with ELMy H-mode edge in ASDEX Upgrade. Nuclear Fusion, 42, 1376-1382.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-42A0-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-42A1-0
Genre: Journal Article

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 Creators:
Peeters, A. G.1, Author              
Gruber, O.1, Author              
Günter, S.2, Author              
Kaufmann, M.3, 4, Author              
Meister, H.5, Author              
Pereverzev, G. V.2, Author              
Ryter, F.6, Author              
Sips, A. C. C.3, Author              
Stober, J.3, Author              
Suttrop, W.5, Author              
Tardini, G.1, Author              
Wolf, R. C.3, Author              
Zohm, H.5, Author              
ASDEX Upgrade Team, Author  
Affiliations:
1Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society
2Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856309              
3Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
4Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291              
5Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              
6Tokamak Edge and Divertor Physics (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856308              

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 Abstract: The confinement physics of the improved H-mode is analysed in detail. It is shown that this scenario can be largely unified with that of the standard H-mode. Transport barriers exist in the early phase of the discharge just after the switch on of the heating. In steady state, however, no clear internal transport barriers can be indentified in the ion temperature profiles. The profiles are then found to be stiff and the improved H-mode follows the same ion temperature scaling as the standard H-mode. The improvement of the confinement against the H-mode scaling is partly due to the dependence of this scaling on the line averaged density, and is partly obtained through density peaking appearing at low densities. It is shown that pre-heating is not essential in reaching the good confinement.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 21125
ISI: 000180208500005
 Degree: -

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Title: Nuclear Fusion
  Alternative Title : Nucl. Fusion
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 42 Sequence Number: - Start / End Page: 1376 - 1382 Identifier: ISSN: 0029-5515