Evidence of inward toroidal momentum convection in the JET tokamak

Tuomas Tala; K.-D. Zastrow; J. Ferreira; P. Mantica; V. Naulin; A. G. Peeters; G. Tardini; M. Brix; G. Corrigan; C. Giroud; D. Strintzi

doi:10.1103/PhysRevLett.102.075001

Evidence of inward toroidal momentum convection in the JET tokamak

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

Research output: Contribution to journal › Article › Scientific › peer-review

70 Citations (Scopus)

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.

Original language	English
Article number	075001
Number of pages	4
Journal	Physical Review Letters
Volume	102
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.102.075001
Publication status	Published - 2009
MoE publication type	A1 Journal article-refereed

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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., & Strintzi, D. (2009). Evidence of inward toroidal momentum convection in the JET tokamak. Physical Review Letters, 102(7), [075001]. https://doi.org/10.1103/PhysRevLett.102.075001

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AU - Tala, Tuomas

AU - Zastrow, K.-D.

AU - Ferreira, J.

AU - Mantica, P.

AU - Naulin, V.

AU - Peeters, A. G.

AU - Tardini, G.

AU - Brix, M.

AU - Corrigan, G.

AU - Giroud, C.

AU - Strintzi, D.

PY - 2009

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AB - 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.

U2 - 10.1103/PhysRevLett.102.075001

DO - 10.1103/PhysRevLett.102.075001

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10.1103/PhysRevLett.102.075001