Effects of Magnetic Shear on Toroidal Rotation in Tokamak Plasmas with Lower Hybrid Current Drive
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Rice-2013-Effects of magnetic.pdf
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Author(s)
Scott, S. D.
Chouli, B.
Fenzi-Bonizec, C.
Nave, M. F. F.
Diamond, P. H.
Delgado-Aparicio, Luis
Eriksson, L.-G.
Giroud, C.
Kirov, K.
Mailloux, J.
Date Issued
September 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Rice, J. E., Y. A. Podpaly, M. L. Reinke, R. Mumgaard, S. D. Scott, S. Shiraiwa, G. M. Wallace, et al. “Effects of Magnetic Shear on Toroidal Rotation in Tokamak Plasmas with Lower Hybrid Current Drive.” Physical Review Letters 111, no. 12 (September 2013). © 2013 American Physical Society
Version
Final published version
Abstract
Application of lower hybrid (LH) current drive in tokamak plasmas can induce both co- and countercurrent directed changes in toroidal rotation, depending on the core q profile. For discharges with q[subscript 0] < 1, rotation increments in the countercurrent direction are observed. If the LH-driven current is sufficient to suppress sawteeth and increase q[subscript 0] above unity, the core toroidal rotation change is in the cocurrent direction. This change in sign of the rotation increment is consistent with a change in sign of the residual stress (the divergence of which constitutes an intrinsic torque that drives the flow) through its dependence on magnetic shear.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.111.125003
