Experimental evidence of momentum transport induced by an up-down asymmetric magnetic equilibrium in toroidal plasmas.

Camenen, Y; Bortolon, A; Duval, B P; Federspiel, L; Peeters, A G; Casson, F J; Hornsby, W A; Karpushov, A N; Piras, F; Sauter, O; Snodin, A P; Szepesi, G

Camenen, Y; Bortolon, A; Duval, B P; Federspiel, L; Peeters, A G; Casson, F J; Hornsby, W A; Karpushov, A N; Piras, F; Sauter, O; Snodin, A P; Szepesi, G.

Afiliación

Camenen Y; Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, UK.

Phys Rev Lett ; 105(13): 135003, 2010 Sep 24.

Article en En | MEDLINE | ID: mdl-21230780

RESUMEN

The first experimental evidence of parallel momentum transport generated by the up-down asymmetry of a toroidal plasma is reported. The experiments, conducted in the Tokamak à Configuration Variable, were motivated by the recent theoretical discovery of ion-scale turbulent momentum transport induced by an up-down asymmetry in the magnetic equilibrium. The toroidal rotation gradient is observed to depend on the asymmetry in the outer part of the plasma leading to a variation of the central rotation by a factor of 1.5-2. The direction of the effect and its magnitude are in agreement with theoretical predictions for the eight possible combinations of plasma asymmetry, current, and magnetic field.

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Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2010 Tipo del documento: Article Pais de publicación: Estados Unidos

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