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Title: Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas

Abstract

The effects of externally imposed and self-generated poloidal flows on turbulence and magnetohydrodynamic (MHD) activity are examined in the context of the possible Electric Tokamak (ET) [Phys. Plasmas 6, 4722 (1999)] plasmas and (circularized) DIII-D-like [Fusion Technol. 8, 441 (1985)] discharges. Global gyrokinetic particle simulations and reduced MHD calculations respectively show that ion temperature gradient driven turbulence (ITGDT) and resistive internal kink MHD activity can be reduced and/or suppressed with experimentally achievable externally imposed flows for possible ET start-up plasmas. Global gyrokinetic particle simulations of ITGDT also serve to demonstrate that self-generated flows are necessary to yield experimentally relevant radial correlation lengths in the case of DIII-D-like discharges. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095-1547 (United States)
Publication Date:
OSTI Identifier:
20216049
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; TOKAMAK DEVICES; TURBULENCE; PLASMA SIMULATION; PLASMA CONFINEMENT; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Leboeuf, J.-N., Dawson, J. M., Decyk, V. K., Kissick, M. W., Rhodes, T. L., and Sydora, R. D. Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas. United States: N. p., 2000. Web. doi:10.1063/1.874000.
Leboeuf, J.-N., Dawson, J. M., Decyk, V. K., Kissick, M. W., Rhodes, T. L., & Sydora, R. D. Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas. United States. doi:10.1063/1.874000.
Leboeuf, J.-N., Dawson, J. M., Decyk, V. K., Kissick, M. W., Rhodes, T. L., and Sydora, R. D. Mon . "Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas". United States. doi:10.1063/1.874000.
@article{osti_20216049,
title = {Effect of externally imposed and self-generated flows on turbulence and magnetohydrodynamic activity in tokamak plasmas},
author = {Leboeuf, J.-N. and Dawson, J. M. and Decyk, V. K. and Kissick, M. W. and Rhodes, T. L. and Sydora, R. D.},
abstractNote = {The effects of externally imposed and self-generated poloidal flows on turbulence and magnetohydrodynamic (MHD) activity are examined in the context of the possible Electric Tokamak (ET) [Phys. Plasmas 6, 4722 (1999)] plasmas and (circularized) DIII-D-like [Fusion Technol. 8, 441 (1985)] discharges. Global gyrokinetic particle simulations and reduced MHD calculations respectively show that ion temperature gradient driven turbulence (ITGDT) and resistive internal kink MHD activity can be reduced and/or suppressed with experimentally achievable externally imposed flows for possible ET start-up plasmas. Global gyrokinetic particle simulations of ITGDT also serve to demonstrate that self-generated flows are necessary to yield experimentally relevant radial correlation lengths in the case of DIII-D-like discharges. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.874000},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}