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

Culham Science Centre
Instituto de Plasmas e Fusão Nuclear (IPFN)
National Research Council (CNR)
Risø DTU National Laboratory for Sustainable Energy
University of Warwick (WMG)
Max-Planck-Institut für Plasmaphysik (IPP)
National Technical University of Athens

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

77 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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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",

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doi = "10.1103/PhysRevLett.102.075001",

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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

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 075001

ER -

Evidence of inward toroidal momentum convection in the JET tokamak

Abstract

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