Abstract
Various aspects of advanced tokamak regimes from multi-machine comparisons using the 'International Tokamak Physics Activity' database, were discussed. Advanced tokamak regimes obtained in ASDEX upgrade, DIII-D, FT-U, JET, TCV and Tore experiments were assessed both in terms of their fusion temperature and capability for ultimately reaching steady-state. These advanced modes were characterized by an improved core confinement and a modified current profile compared to the relaxed Ohmicaly driven one. A new operational diagram for advanced tokamak operation was proposed where the figure of merit characterizing the fusion performance and confinement, was drawn versus the fraction of the plasma current driven by the bootstrap effect.
Original language | English |
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Pages (from-to) | A19-A34 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 46 |
Issue number | 5 SUPPL. A |
DOIs | |
State | Published - May 2004 |