Community Research and Development Information Service - CORDIS

Abstract

The Wendelstein VII-AS Stellarator will be constructed, to investigate the plasma behaviour during currentless operation in an optimized magnetic configuration. For the defined configuration an increase of the equilibrium limit to beta = 4.5 % is predicted. By the particle drift optimization a reduction of transport losses by a factor of 0.5 in the intermediate regime compared to a conventional Stellarator will be expected. Heating methods have to be provided, to explore the stability and equilibrium at high plasma pressure at low collisionality. In the transition to the long mean free path regime effects of trapped particles and modification of transport influenced by electric fields have to be studied. ECRH (1 MW, 70 GHz), ICRH (2 x 1.5 MW, 30 + 110 MHz) and NI (1.5 MW, 50 kV) will be used in W VII-AS for plasma build up and further heating. The combination of different heating methods will allow flexible operation up to a total power P-N about 5 MW. Transport studies on the basis of the neoclassical theory predict for B<3 T densities n>10**14 cm**-3; T-i, T-e>1 + 2 keV.

Additional information

Authors: W VII A TEAM, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);INSTITUT FUER PLASMAFORSCHUNG, UNIVERSITAET STUTTGART (GERMANY);ECRH TEAM, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);INSTITUT FUER PLASMAFORSCHUNG, UNIVERSITAET STUTTGART (GERMANY);NI TEAM MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY), MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);INSTITUT FUER PLASMAFORSCHUNG, UNIVERSITAET STUTTGART (GERMANY);INSTITUT FUER PLASMAFORSCHUNG, UNIVERSITAET STUTTGART (GERMANY), MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);INSTITUT FUER PLASMAFORSCHUNG, UNIVERSITAET STUTTGART (GERMANY)
Bibliographic Reference: 5TH INTERNATIONAL WORKSHOP ON STELLARATORS, SCHLOSS RINGBERG, BAVARIA (GERMANY), SEPT. 24-28, 1984 VOL. II, PP. 625-642, EUR 9618 EN (1985) FS, VOL. I AND VOL. II, 787 P., BFR 3500 (BOTH VOLUMES), EUROFFICE, LUXEMBOURG, POB 1003
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top