Local variables affecting H-mode threshold on Alcator C-Mod

A E Hubbard, R L Boivin, J F Drake, M Greenwald, Y In, J H Irby, B N Rogers, J A Snipes
1998 Plasma Physics and Controlled Fusion  
An edge temperature threshold for the L-H transition is found on the Alcator C-Mod tokamak. The critical temperature depends weakly on density and increases with B T and with unfavourable drift direction. T e at the H-L transition can be greater than or equal to the L-H threshold. Magnetic fluctuations are observed at some H-L transitions. Measured parameters are compared with H-mode theories, including nonlinear drift-ballooning code simulations.
doi:10.1088/0741-3335/40/5/024 fatcat:pgwktarh6ndj7nliou7egzdysu