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Evidence of inward toroidal momentum convection in the JET tokamak

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Tala, T., Zastrow, K. -D., Ferreira, J., Mantica, P., Naulin, V., Peeters, A. G., Tardini, G., Brix, M., Corrigan, G., Giroud, C. and Strintzi, D.. (2009) Evidence of inward toroidal momentum convection in the JET tokamak. Physical Review Letters, Vol.102 (No.7). Article no. 075001. ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.102.075001

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

Item Type:

Journal Article

Subjects:

Q Science > QC Physics

Divisions:

Faculty of Science > Physics

Journal or Publication Title:

Physical Review Letters

Publisher:

American Physical Society

ISSN:

0031-9007