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Abstract

WENDELSTEIN 7-X (W7-X) shall confirm the favourable plasma properties and the high density and beta limits of the helical advanced stellarator and demonstrate steady-state operation. The magnetic configuration of W7-X is characterized by a set of 50 non-planar and 20 planar superconducting coils. The magnet system will be manufactured and assembled to a precision of a few millimetres and maintain its symmetry during cool-down to cryogenic temperatures. Power supplies allows one to adjust the magnetic field with a precision of a few milli Tesla and safely dump the magnet energy in case of a quench. The plasma vessel gives maximum space for the plasma and is kept symmetrically with respect to the plasma by dedicated means. Steady-state heating is achieved by 10 MW ECRH. Energy and particles are controlled by a continuously working divertor. All plasma-facing surfaces are covered by CFC, graphite or B(4)C, respectively. The paper reviews the status of the construction and describes details of the design.

Additional information

Authors: WANNER M ET AL, Max-Planck-Institut für Plasmaphysik, Teilinstitut Greifswald, EURATOM Association, Greifswald (DE);MÜLLER G A, Institut für Plasmaforschung, Universität Stuttgart (DE);KASPAREK W, Institut für Plasmaforschung, Universität Stuttgart (DE);MULLER G A, Institut fur Plasmaforschung, Universitat Stuttgart (DE);THUMM M, Forschungszentrum Karlsruhe in der Helmholz-Gemeinschaft, Eggenstein-Leopoldshafen (DE);DAMMERTZ G, Forschungszentrum Karlsruhe in der Helmholz-Gemeinschaft, Eggenstein-Leopoldshafen (DE)
Bibliographic Reference: An article published in: Nuclear Fusion 43 (June 2003) 416-424
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://stacks.iop.org/0029-5515/43/416
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