Major results from Wendelstein 7-AS stellarator

Wagner, F.; Burhenn, R.; Gadelmeier, F.; Geiger, J.; Hirsch, M.; Laqua, H. P.; Weller, A.; Werner, A.; Bäumel, S.; Baldzuhn, J.; Brakel, R.; Dinklage, A.; Grigull, P.; Endler, M.; Erckmann, V.; Ehmler, H.; Feng, Y.; Fischer, R.; Giannone, L.; Hartfuss, H.-J.; Hildebrandt, D.; Holzhauer, E.; Igitkhanov, Y.; Jaenicke, R.; Kick, M.; Kislyakov, A.; Kreter, A.; Kisslinger, J.; Klinger, T.; Klose, S.; Knauer, J. P.; König, R.; Kühner, G.; Maassberg, H.; McCormick, K.; Naujoks, D.; Niedermeyer, H.; Nührenberg, C.; Pasch, E.; Ramasubramanian, N.; Rust, N.; Sallander, E.; Sardei, F.; Wenzel, U.; Wobig, H.; Würsching, E.; Zarnstorff, M.; Zoletnik, S.; W7-AS Team,

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Major results from Wendelstein 7-AS stellarator

MPG-Autoren

/persons/resource/persons110725

Wagner, F.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108825

Burhenn, R.
VINETA, Max Planck Institute for Plasma Physics, Max Planck Society;
W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109156

Geiger, J.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109397

Hirsch, M.
W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110770

Weller, A.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110781

Werner, A.
W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108602

Bäumel, S.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108767

Brakel, R.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108944

Dinklage, A.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109226

Grigull, P.
W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109027

Endler, M.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109043

Erckmann, V.
W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109011

Ehmler, H.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;
VINETA, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109074

Feng, Y.
W7-X: Theory, Max Planck Institute for Plasma Physics, Max Planck Society;
W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109090

Fischer, R.
Centre for Interdisciplinary Plasma Science (CIPS), Max Planck Institute for Plasma Physics, Max Planck Society;
Surface Science (OP), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109170

Giannone, L.
Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109309

Hartfuss, H.-J.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109390

Hildebrandt, D.
Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109474

Igitkhanov, Y.
Stellarator System Studies, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109491

Jaenicke, R.
W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society;
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109609

Kisslinger, J.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109625

Klinger, T.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;
VINETA, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109629

Klose, S.
Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society;
Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109653

König, R.
W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109723

Kühner, G.
Computer Center Garching (RZG), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109858

Maassberg, H.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons109914

McCormick, K.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;
W7-AS, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110035

Naujoks, D.
Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110054

Niedermeyer, H.
W7-X: Construction, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110071

Nührenberg, C.
Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110111

Pasch, E.
Stellarator Optimisation (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

Ramasubramanian, N.
Max Planck Society;

/persons/resource/persons110298

Rust, N.
W7-X: Heating (HT), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110310

Sallander, E.
Stellarator Scenario Development (E5), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110320

Sardei, F.
W7-X: Theory, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110778

Wenzel, U.
Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110819

Wobig, H.
Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110835

Würsching, E.
Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society;

W7-AS Team,
Max Planck Society;

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Zitation

Wagner, F., Burhenn, R., Gadelmeier, F., Geiger, J., Hirsch, M., Laqua, H. P., et al. (2003). Major results from Wendelstein 7-AS stellarator. In Fusion Energy 2002. Vienna: International Atomic Energy Agency.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0027-3C37-6

Zusammenfassung

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×10²⁰m^-3) and partly detached divertor conditions have been attained. The details of the divertor operation will be described along with the 3D-efforts to model the divertor observations. At a density beyond 1.5×10²⁰m^-3 another confinement bifurcation appears, which allows steady state operation at good energy and low impurity confinement. The transition is possible from a state of normal confinement or from ELMy or quiescent H-modes. Starting with normal confinement, bifurcation is initiated by a broadening of the density profile. This regime can easily be heated above cut-off by ECRH using electron-bernstein-wave mode conversion. The highest beta-values (>3%) are achieved at high density. The relevance of the W7-AS data for Wendelstein 7-X and the Helias-reactor will be discussed.