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; A E Hubbard; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; R L Boivin; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; J F Drake; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; M Greenwald; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; Y In; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; J H Irby; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; B N Rogers; MIT Plasma Science and Fusion Center, Cambridge, MA, USA; J A Snipes; MIT Plasma Science and Fusion Center, Cambridge, MA, USA
Журнал:
Plasma Physics and Controlled Fusion
Дата:
1998-05-01
Аннотация:
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 and with unfavourable drift direction. 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.
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