Evidence of Inward Toroidal Momentum Convection in the JET Tokamak

T. Tala; K.-D. Zastrow; J. Ferreira; P. Mantica; Volker 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

T. Tala, K.-D. Zastrow, J. Ferreira, P. Mantica, Volker 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
Journal	Physical Review Letters
Volume	102
Issue number	7
Pages (from-to)	075001
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.102.075001
Publication status	Published - 2009

Bibliographical note

Copyright (2009) by the American Physical Society.

Keywords

Fusion energy

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http://link.aps.org/doi/10.1103/PhysRevLett.102.075001

Cite this

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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.",

keywords = "Fusion energy, Fusionsenergiforskning, Fusionsenergi",

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

note = "Copyright (2009) by the American Physical Society.",

year = "2009",

doi = "10.1103/PhysRevLett.102.075001",

language = "English",

volume = "102",

pages = "075001",

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T1 - Evidence of Inward Toroidal Momentum Convection in the JET Tokamak

AU - Tala, T.

AU - Zastrow, K.-D.

AU - Ferreira, J.

AU - Mantica, P.

AU - Naulin, Volker

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.

KW - Fusion energy

KW - Fusionsenergiforskning

KW - Fusionsenergi

U2 - 10.1103/PhysRevLett.102.075001

DO - 10.1103/PhysRevLett.102.075001

M3 - Journal article

C2 - 19257678

VL - 102

SP - 075001

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 7

ER -

Evidence of Inward Toroidal Momentum Convection in the JET Tokamak

Abstract

Bibliographical note

Keywords

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