Radial electric field required to suppress ion temperature gradient modes in the Electric Tokamak

M. W. Kissick, J. N. Leboeuf, S. C. Cowley, J. M. Dawson, V. K. Decyk, P. A. Gourdain, J. L. Gauvreau, P. A. Pribyl, L. W. Schmitz, R. D. Sydora, G. R. Tynan

Research output: Contribution to journalConference article

14 Scopus citations

Abstract

The Electric Tokamak (ET), currently under construction at the University of California-Los Angeles, is designed to rotate poloidally via a radial current induced by fast wave rf heating fast enough to bifurcate the plasma into a global "H mode" ("high confinement mode"). A global gyrokinetic code is used to explore and illustrate some of the effects on ion temperature gradient turbulence. The realistic radial electric field required to completely suppress these modes for ET parameters is demonstrated to be <-30 V/cm at its maximum near the half radius. The effects of both a poloidally supersonic bulk rotation threshold and the shear in this rotation near that supersonic threshold were shown to be important in reducing these modes.

Original languageEnglish (US)
Pages (from-to)4722-4727
Number of pages6
JournalPhysics of Plasmas
Volume6
Issue number12
DOIs
StatePublished - Dec 1999
Externally publishedYes
EventProceedings of the 1999 APS Centennial Meeting - Atlanta, GA, United States
Duration: Mar 20 1999Mar 26 1999

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Kissick, M. W., Leboeuf, J. N., Cowley, S. C., Dawson, J. M., Decyk, V. K., Gourdain, P. A., Gauvreau, J. L., Pribyl, P. A., Schmitz, L. W., Sydora, R. D., & Tynan, G. R. (1999). Radial electric field required to suppress ion temperature gradient modes in the Electric Tokamak. Physics of Plasmas, 6(12), 4722-4727. https://doi.org/10.1063/1.873759