Plasma turbulence in the scrape-off layer of the ISTTOK tokamak
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1606.09538.pdf
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Author(s)
Jorge, Rogério
Ricci, Paolo
Halpern, Federico D.
Silva, Carlos
Gomes Loureiro, Nuno F
Date Issued
October 2016
Journal
Physics of Plasmas
Publisher
American Institute of Physics (AIP)
Citation
Jorge, Rogério et al. “Plasma Turbulence in the Scrape-Off Layer of the ISTTOK Tokamak.” Physics of Plasmas 23, 10 (October 2016): 102511 © 2016 American Institute of Physics
Version
Author's final manuscript
Abstract
The properties of plasma turbulence in a poloidally limited scrape-off layer (SOL) are addressed, with focus on ISTTOK, a large aspect ratio tokamak with a circular cross section. Theoretical investigations based on the drift-reduced Braginskii equations are carried out through linear calculations and non-linear simulations, in two-and three-dimensional geometries. The linear instabilities driving turbulence and the mechanisms that set the amplitude of turbulence as well as the SOL width are identified. A clear asymmetry is shown to exist between the low-field and the high-field sides of the machine. While the comparison between experimental measurements and simulation results shows good agreement in the far SOL, large intermittent events in the near SOL, detected in the experiments, are not captured by the simulations.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1063/1.4964783
