Advanced Lower Hybrid Current Drive Modeling

The Lower Hybrid current drive (LHCD) modeling is revisited in the light of the recently proposed scheme involving only few rays [l]. Besides the strong reduction of the computational effort, this approach allows to recover a physical meaning for the spectral width associated with each ray, while the quasilinear selfconsistency may be fully achieved. Three examples are presented for ITER, C‐MOD and Tore Supra tokamaks to illustrate the effectiveness of the method, which cover most of the LHCD regimes found in this type of machines.