Simulation of ASDEX Upgrade edge plasma in the H-regime

Several simulations of the L-regimes of ASDEX Upgrade edge plasma have been performed with the B2 SOLP S5.0 2D fluid transport code for a wide range of parameters. A conclusion has been made that the radial electric field in the separatrix vicinity is close to the neoclassical value. The poloidal vectorE x vectorB drifts and compensating parallel fluxes in the scrape-off layer are larger in the H-mode due to steeper gradients while the qualitative pattern of the flows is similar to that of the L-mode. (copyright 2004 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)