Modelling of Sawtooth Induced Redistribution of ICRF Heated Minority Ions

The major results from experiments performed in the Joint European Torus are reviewed. Extensive investigations of mhd stability properties of the plasma have been conducted and the regions of stable operation are now well understood, though much basic physics remains unresolved. Confinement studies have been undertaken in both L- and H-mode regimes and the scaling of energy confinement with major plasma parameters has been identified. Current drive studies have addressed both the problem of global current drive, either by lower hybrid wave drive or by bootstrap current, and that of local current profile control for the stabilization of MHD instabilities. The discussion necessarily concentrates on the broad themes of the programme rather than the details of the underlying physics.
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JETP9462 2.58 Mb