Scaling of Spontaneous Rotation with Temperature and Plasma Current in Tokamaks
Name
Parra-2012-Scaling of Spontaneous Rotation with.pdf
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Checksum (MD5)
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Author(s)
Parra Diaz, Felix Ignacio
Nave, M. F. F.
Schekochihin, A. A.
Giroud, C.
de Grassie, J. S.
Severo, J. H. F.
de Vries, P.
Zastrow, K. -D.
Date Issued
February 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Parra, F. et al. “Scaling of Spontaneous Rotation with Temperature and Plasma Current in Tokamaks.” Physical Review Letters 108.9 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
Using theoretical arguments, a simple scaling law for the size of the intrinsic rotation observed in tokamaks in the absence of a momentum injection is found: The velocity generated in the core of a tokamak must be proportional to the ion temperature difference in the core divided by the plasma current, independent of the size of the device. The constant of proportionality is of the order of 10 km·s[superscript -1]·MA·keV[superscript -1]. When the intrinsic rotation profile is hollow, i.e., it is countercurrent in the core of the tokamak and cocurrent in the edge, the scaling law presented in this Letter fits the data remarkably well for several tokamaks of vastly different size and heated by different mechanisms.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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.108.095001
