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.
authors.affiliation: Association EURATOM-Tekes, VTT, P.O. Box 1000, FIN-02044 VTT, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Tala
authors.forename: K-D
authors.initials: KD
authors.lastname: Zastrow
authors.forename: J
authors.initials: J
authors.lastname: Ferreira
authors.forename: P
authors.initials: P
authors.lastname: Mantica
authors.forename: V
authors.initials: V
authors.lastname: Naulin
authors.forename: A G
authors.initials: AG
authors.lastname: Peeters
authors.forename: G
authors.initials: G
authors.lastname: Tardini
authors.forename: M
authors.initials: M
authors.lastname: Brix
authors.forename: G
authors.initials: G
authors.lastname: Corrigan
authors.forename: C
authors.initials: C
authors.lastname: Giroud
authors.forename: D
authors.initials: D
authors.lastname: Strintzi