Turbulence in the TORE SUPRA Tokamak: Measurements and Validation of Nonlinear Simulations

Journal Article · Fri Apr 24 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.165005· OSTI ID:21316647

Casati, A; Bourdelle, C; Clairet, F; Garbet, X; Grandgirard, V; Hoang, G T; Imbeaux, F; Sabot, R; Sarazin, Y ^[1]; Gerbaud, T ^[1]; Hennequin, P; Guercan, Oe D; Honore, C; Vermare, L ^[2]; Candy, J; Waltz, R E ^[3]; Heuraux, S ^[4]

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1. CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France)
2. Laboratoire de Physique des Plasmas, CNRS-Ecole Polytechnique, 91128 Palaiseau Cedex (France)
3. General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)
4. IJL, CNRS Nancy-Universite, 54052 Nancy Cedex (France)

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.

• OSTI ID: 21316647
• Journal Information: Physical Review Letters, Vol. 102, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.102.165005; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANISOTROPY
COMPUTERIZED SIMULATION
LARMOR RADIUS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
TORE SUPRA TOKAMAK
TURBULENCE