ALFVEN-WAVE DISSIPATION AND CURRENT IN STRONGLY ELONGATED TOKAMAKS

The general approach to Alfven-wave current drive and induced plasma r otation in tokamaks with strongly elongated transverse cross-sections is considered. Model approximations are used to describe the circulati ng- and trapped-particle dynamics in all particle-trapping regions. Th is approach gives an accuracy of some percent. New terms, connected wi th the wave dissipation on trapped particles in the second and third t rapped-particle regions for elongated tokamaks, are taken into account . The plasma rotation and longitudinal current, depending on the absor bed power of kinetic Alfven waves, are discussed.