Evidence of Inward Toroidal Momentum Convection in the JET Tokamak

T. Tala, K.-D. Zastrow, J. Ferreira, P. Mantica, V. Naulin, A. G. Peeters, G. Tardini, M. Brix, G. Corrigan, C. Giroud, and D. Strintzi
Phys. Rev. Lett. 102, 075001 – Published 17 February 2009

Abstract

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 20m/s, has been found. Both results are consistent with gyrokinetic simulations. This evidence is complemented in plasmas with internal transport barriers.

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  • Received 22 May 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.075001

©2009 American Physical Society

Authors & Affiliations

T. Tala1, K.-D. Zastrow2, J. Ferreira3, P. Mantica4, V. Naulin5, A. G. Peeters6, G. Tardini7, M. Brix2, G. Corrigan2, C. Giroud2, and D. Strintzi8

  • 1Association EURATOM-Tekes, VTT, P.O. Box 1000, FIN-02044 VTT, Finland
  • 2EURATOM/UKAEA Fusion Association, Culham Science Centre, Oxon, OX14 3DB, United Kingdom
  • 3Associação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear, 1049-001 Lisbon, Portugal
  • 4Istituto di Fisica del Plasma CNR-EURATOM, via Cozzi 53, 20125 Milano, Italy
  • 5Association Euratom-Risø DTU, DK-4000 Roskilde, Denmark
  • 6Center for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, CV4 7AL, United Kingdom
  • 7Max-Planck-Institut für Plasmaphysik, EURATOM-Assoziation, D-85748, Garching, Germany
  • 8National Technical University of Athens, Euratom Association, GR-15773 Athens, Greece

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Vol. 102, Iss. 7 — 20 February 2009

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