Evidence of Inward Toroidal Momentum Convection in the JET Tokamak
Journal Article
·
· Physical Review Letters
- Association EURATOM-Tekes, VTT, P.O. Box 1000, FIN-02044 VTT (Finland)
- EURATOM/UKAEA Fusion Association, Culham Science Centre, Oxon, OX14 3DB (United Kingdom)
- Associacao EURATOM/IST, Instituto de Plasmas e FuSao Nuclear, 1049-001 Lisbon (Portugal)
- Istituto di Fisica del Plasma CNR-EURATOM, via Cozzi 53, 20125 Milano (Italy)
- Association Euratom-Risoe DTU, DK-4000 Roskilde (Denmark)
- Center for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, CV4 7AL (United Kingdom)
- Max-Planck-Institut fuer Plasmaphysik, EURATOM-Assoziation, D-85748, Garching (Germany)
- National Technical University of Athens, Euratom Association, GR-15773 Athens (Greece)
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.
- OSTI ID:
- 21180224
- Journal Information:
- Physical Review Letters, Vol. 102, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.102.075001; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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