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

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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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10.1103/PhysRevLett.102.075001

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title = "Evidence of inward toroidal momentum convection in the JET tokamak",

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.",

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

year = "2009",

doi = "10.1103/PhysRevLett.102.075001",

language = "English",

volume = "102",

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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

N2 - 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.

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

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 7

M1 - 075001

ER -

Evidence of inward toroidal momentum convection in the JET tokamak

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