Comparison of Scrape-off Layer Turbulence in Alcator C-Mod with Three Dimensional Gyrofluid Computations Metadata

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  • Main Title Comparison of Scrape-off Layer Turbulence in Alcator C-Mod with Three Dimensional Gyrofluid Computations


  • Author: S.J. Zweben, B.D. Scott, J.L. Terry, B. LaBombard, J.W. Hughes, and D.P. Stotler
    Creator Type: Personal


  • Sponsor: United States. Department of Energy. Office of Science.
    Contributor Type: Organization


  • Name: Princeton University. Plasma Physics Laboratory.
    Place of Publication: Princeton, New Jersey
    Additional Info: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)


  • Creation: 2009-09-01


  • English


  • Content Description: This paper describes quantitative comparisons between turbulence measured in the scrape-off layer (SOL) of Alcator C-Mod [S. Scott, A. Bader, M. Bakhtiari et al., Nucl. Fusion 47, S598 (2007)] and three dimensional computations using electromagnetic gyrofluid equations in a two-dimensional tokamak geometry. These comparisons were made for the outer midplane SOL for a set of inner-wall limited, near-circular Ohmic plasmas. The B field and plasma density were varied to assess gyroradius and collisionality scaling. The poloidal and radial correlation lengths in the experiment and computation agreed to within a factor of 2 and did not vary significantly with either B or density. The radial and poloidal propagation speeds and the frequency spectra and poloidal k-spectra also agreed fairly well. However, the autocorrelation times and relative Da fluctuation levels were higher in the experiment by more than a factor of 2. Possible causes for these disagreements are discussed. 2009 American Institute of Physics.
  • Physical Description: 289Kb


  • Keyword: Scrape-Off Layer (Sol), Turbulence, Tokamaks
  • Keyword: Spectra
  • STI Subject Categories: 70 Plasma Physics And Fusion Technology
  • Keyword: Geometry
  • Keyword: Plasma Density
  • Keyword: Fluctuations
  • Keyword: Turbulence Scrape-Off Layer (Sol), Turbulence, Tokamaks
  • Keyword: Sols


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: PPPL-4438
  • Grant Number: DE-ACO2-09CH11466
  • Office of Scientific & Technical Information Report Number: 963546
  • Archival Resource Key: ark:/67531/metadc931917