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Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator C-Mod Tokamak Plasmas

Author(s)
Rice, John E.; Hughes, Jerry W.; Diamond, P. H.; Kosuga, Y.; Podpaly, Yuri A.; Reinke, Matthew Logan; Greenwald, Martin J.; Gürcan, Ö. D.; Hahm, T. S.; Hubbard, Amanda E.; Marmar, Earl S.; McDevitt, C. J.; Whyte, Dennis G.; ... Show more Show less
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Abstract
Intrinsic rotation has been observed in I-mode plasmas from the C-Mod tokamak, and is found to be similar to that in H mode, both in its edge origin and in the scaling with global pressure. Since both plasmas have similar edge ∇T, but completely different edge ∇n, it may be concluded that the drive of the intrinsic rotation is the edge ∇T rather than ∇P. Evidence suggests that the connection between gradients and rotation is the residual stress, and a scaling for the rotation from conversion of free energy to macroscopic flow is calculated.
Date issued
2011-05
URI
http://hdl.handle.net/1721.1/67326
Department
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
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Rice, J. et al. “Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator C-Mod Tokamak Plasmas.” Physical Review Letters 106.21 (2011) © 2011 American Physical Society
Version: Final published version
ISSN
0031-9007

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