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 journalArticleScientificpeer-review

69 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 languageEnglish
Article number075001
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number7
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

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convection
momentum
diffusivity
Joint European Torus
neutral beams
torque
perturbation
heat
profiles
ions
simulation

Cite this

Tala, T., Zastrow, K-D., Ferreira, J., Mantica, P., Naulin, V., Peeters, A. G., ... 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
Tala, Tuomas ; Zastrow, K.-D. ; Ferreira, J. ; Mantica, P. ; Naulin, V. ; Peeters, A. G. ; Tardini, G. ; Brix, M. ; Corrigan, G. ; Giroud, C. ; Strintzi, D. / Evidence of inward toroidal momentum convection in the JET tokamak. In: Physical Review Letters. 2009 ; Vol. 102, No. 7.
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Tala, T, Zastrow, K-D, Ferreira, J, Mantica, P, Naulin, V, Peeters, AG, Tardini, G, Brix, M, Corrigan, G, Giroud, C & Strintzi, D 2009, 'Evidence of inward toroidal momentum convection in the JET tokamak', Physical Review Letters, vol. 102, no. 7, 075001. https://doi.org/10.1103/PhysRevLett.102.075001

Evidence of inward toroidal momentum convection in the JET tokamak. / Tala, Tuomas; Zastrow, K.-D.; Ferreira, J.; Mantica, P.; Naulin, V.; Peeters, A. G.; Tardini, G.; Brix, M.; Corrigan, G.; Giroud, C.; Strintzi, D.

In: Physical Review Letters, Vol. 102, No. 7, 075001, 2009.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Evidence of inward toroidal momentum convection in the JET tokamak

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

Y1 - 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

M3 - Article

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JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

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