HIGH CONFINEMENT AND HIGH-DENSITY WITH STATIONARY PLASMA ENERGY AND STRONG EDGE RADIATION IN THE TEXTOR-94 TOKAMAK

Stationary high energy confinement is observed on TEXTOR-94 for times limited only by the flux swing of the transformer using strong edge ra diation cooling. Necessary tools are the feedback control of the radia ted power and of the plasma energy content. At the highest densities o btained (up to 1.2 times the Greenwald limit), energy confinement exce eds the edge-localized-mode-free H-mode scaling ITERH93-P by more than 20%. beta limits of TEXTOR-94 are reached with f(H89)/q(a) approximat e to 0.6 No detrimental effect of the seeded impurity is seen. These h igh confinement discharges meet many conditions necessary for a fusion reactor regime.