The feasibility of two RF heating schemes, Transit Time Magnetic Pumping and Lower Hybrid heating, has been tested at the Grenoble Laboratory. TTMP results on PETULA were accurately consistent with theory; power absorption was only limited by the unfavourable scaling for small devices. – Launching of lower hybrid waves was made convenient by the grill concept. WEGA and PETULA B experiments showed that ions can be efficiently heated and interaction with electrons leads to non-inductive current drive. Tokamak discharges for which the current is entirely or mainly supported by waves have good confinement and stability properties.
Quasi-linear model for ion cyclotron heating of tokamaks and mirrors