Casati A, Gerbaud T, Hennequin P, Bourdelle C, Candy J, Clairet F, Garbet X, Grandgirard V, Gürcan OD, Heuraux S, Hoang GT, Honoré C, Imbeaux F, Sabot R, Sarazin Y, Vermare L, Waltz RE. Turbulence in the TORE SUPRA tokamak: measurements and validation of nonlinear simulations.
PHYSICAL REVIEW LETTERS 2009;
102:165005. [PMID:
19518721 DOI:
10.1103/physrevlett.102.165005]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Indexed: 05/27/2023]
Abstract
Turbulence measurements in TORE SUPRA tokamak plasmas have been quantitatively compared to predictions by nonlinear gyrokinetic simulations. For the first time, numerical results simultaneously match within experimental uncertainty (a) the magnitude of effective heat diffusivity, (b) rms values of density fluctuations, and (c) wave-number spectra in both the directions perpendicular to the magnetic field. Moreover, the nonlinear simulations help to revise as an instrumental effect the apparent experimental evidence of strong turbulence anisotropy at spatial scales of the order of ion-sound Larmor radius.
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