Ohmic energy confinement saturation and core toroidal rotation reversal in Alcator C-Mod plasmas

60Citations
Citations of this article
34Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Ohmic energy confinement saturation is found to be closely related to core toroidal rotation reversals in Alcator C-Mod tokamak plasmas. Rotation reversals occur at a critical density, depending on the plasma current and toroidal magnetic field, which coincides with the density separating the linear Ohmic confinement regime from the saturated Ohmic confinement regime. The rotation is directed co-current at low density and abruptly changes direction to counter-current when the energy confinement saturates as the density is increased. Since there is a bifurcation in the direction of the rotation at this critical density, toroidal rotation reversal is a very sensitive indicator in the determination of the regime change. The reversal and confinement saturation results can be unified, since these processes occur in a particular range of the collisionality. © 2012 American Institute of Physics.

Cite

CITATION STYLE

APA

Rice, J. E., Greenwald, M. J., Podpaly, Y. A., Reinke, M. L., Diamond, P. H., Hughes, J. W., … Wolfe, S. M. (2012). Ohmic energy confinement saturation and core toroidal rotation reversal in Alcator C-Mod plasmas. Physics of Plasmas, 19(5). https://doi.org/10.1063/1.3695213

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free