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  New advanced operational regime on the W7-AS stellarator

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., et al. (2002). New advanced operational regime on the W7-AS stellarator. Physical Review Letters, 89(1): 015001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-40CA-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-40CB-4
Genre: Journal Article

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 Creators:
McCormick, K.1, Author              
Grigull, P.2, Author              
Burhenn, R.3, 4, Author              
Brakel, R.5, Author              
Ehmler, H.1, Author              
Feng, Y.4, 5, Author              
Gadelmeier, F.6, Author              
Giannone, L.4, 5, 7, Author              
Hildebrandt, D.8, Author              
Hirsch, M.5, Author              
Jaenicke, R.4, 5, Author              
Kisslinger, J.4, 5, Author              
Klinger, T.1, 3, Author              
Klose, S.8, 9, Author              
Knauer, J. P.4, 5, Author              
König, R.1, Author              
Kühner, G.4, 5, Author              
Laqua, H. P.6, Author              
Naujoks, D.8, Author              
Niedermeyer, H.10, Author              
Pasch, E.11, Author              Narayanan, R.1, Author              Rust, N.12, Author              Sardei, F.5, Author              Wagner, F.5, Author              Weller, A.1, 5, Author              Wenzel, U.8, Author              Werner, A.2, Author               more..
Affiliations:
1Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856285              
2W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856305              
3VINETA, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856311              
4W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856310              
5Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856291              
6External Organizations, ou_persistent22              
7Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
8Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856324              
9Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              
10W7-X: Construction, Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856314              
11Stellarator Optimisation (E3), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856329              
12W7-X: Heating (HT), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856343              

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 Abstract: A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and low impurity confinement times, and edge- localized radiation. Impurity accumulation is avoided. Quasistationary discharges with line-averaged densities (n) over bar (e) to 4x10(20) m(-3) , radiation levels to 90% , and partial plasma detachment at the divertor target plates can be simultaneously realized. Energy confinement is up to twice that of a standard scaling. At B-t=0.9 T , an average beta value of 3.1% is achieved. The high (n) over bar (e) values allow demonstration of electron Bernstein wave heating using linear mode conversion.

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Language(s): eng - English
 Dates: 2002-07-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 21034
ISI: 000176285700024
 Degree: -

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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 89 (1) Sequence Number: 015001 Start / End Page: - Identifier: ISSN: 0031-9007