EC+LH current drive in the presence of an Internal Transport Barrier

In the present paper we study the effects of the presence of an Internal Transport Barrier (ITB) on the current drive efficiency of electron cyclotron waves interacting with an extended tail generated by lower hybrid waves. We study the subject by solving the Fokker-Planck equation, with just in time corrections on the temperature and density profiles, found directly from the actual electron distribution function. The results obtained show that the current driven by the combined action of both types of waves is weakly dependent on the depth of the ITB, slightly more dependent on the level of magnetic turbulence, and much more dependent on the level of EC wave power.