The modelling studies being performed for steady state divertor operation of the ITER-FEAT design are summarized. Optimization of the divertor geometry reveals theimportance of the proper target shape for a reduction of the peakpower loads. A high gas conductance between the divertor legs is alsoessential for maintaining acceptable conditions in the outer divertor,which receives a higher power loading than the inner divertor. Impurity seeding,which would be necessary if tritium co-deposition concerns precludedthe use of carbon as the plasma facing material, can ensure the requiredhigh radiation level at acceptable Zeff, and the divertor performanceis not very sensitive to the choice of radiating impurity.
Divertor detachment and exhaust on the TdeV tokamak