Evidence of Inward Toroidal Momentum Convection in the JET Tokamak

T. Tala, K.-D. Zastrow, J. Ferreira, P. Mantica, Volker Naulin, A.G. Peeters, G. Tardini, M. Brix, G. Corrigan, C. Giroud, D. Strintzi

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    Experiments have been carried out on the Joint European Torus tokamak to determine the diffusive and convective momentum transport. Torque, injected by neutral beams, was modulated to create a periodic perturbation in the toroidal rotation velocity. Novel transport analysis shows the magnitude and profile shape of the momentum diffusivity are similar to those of the ion heat diffusivity. A significant inward momentum pinch, up to 20 m/s, has been found. Both results are consistent with gyrokinetic simulations. This evidence is complemented in plasmas with internal transport barriers.
    Original languageEnglish
    JournalPhysical Review Letters
    Issue number7
    Pages (from-to)075001
    Publication statusPublished - 2009

    Bibliographical note

    Copyright (2009) by the American Physical Society.


    • Fusion energy


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