TRANSPORT SIMULATIONS OF TFTR - THEORETICALLY BASED TRANSPORT MODELS AND CURRENT SCALING

Predictions for TFTR current scaling experiments are investigated for four recent theoretically based models, to find support for empirical current scaling used for planning future fusion devices. The profile-c onsistent drift wave model is found to predict current scaling. None o f three multimode models, including the Bateman Version 5. 10 model, p reviously claimed to show current scaling for TFTR, succeeds in simula ting measured temperature and density profiles for either high or low current experiments. Standard edge resistive ballooning mode models do not lead to I(p) scaling of confinement, underestimating losses at lo w current by factors of 2 to 4.