2D MODELING OF RADIATING DIVERTOR REGIME FOR ITER

A modelling study of the ITER divertor is done using the B2-Eirene cod e package with full multi-species impurity treatment and volumetric re combination of deuterium ions. A 'virtual target regime' is identified , for which strong recombination and ionization form a double layer wh ich acts like a target surface inside the divertor plasma. The power l oads, erosion, and helium removal seem to be within the acceptable ran ge For the ITER design, making this regime, together with operational points close to it, a reasonable starting point for the optimization o f the ITER divertor.