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(EXP1/20) On the Interplay between Turbulence and Poloidal Flows in Plasmas

   
C. Hidalgo , M. A. Pedrosa , I. García-Cortés , E. Sánchez , R. Balbín , B. van Milligen 
Asociación EURATOM-CIEMAT, 28040 Madrid, Spain
 
C. Silva , H. Fernandes , H. Figueiredo , C. Varandas 
Associação EURATOM-IST, 1096 Lisboa, Portugal
 
C. Riccardi , D. Madella , R. Carrozza , D. Mozzi , M. Fontanesi 
Università degli Studi di Milano, 20133 Milan, Italy
 
L. Garcia 
Carlos III University, Madrid, Spain
 
M. Endler ¹, S. Davies , G. F. Matthews 
JET Joint Undertaking, Abingdon, U.K.
¹ IPP Garching, EURATOM Association, 85740 Garching
 
G. Fiksel 
University of Wisconsin - Madison, USA
 
B. A. Carreras 
Oak Ridge National Laboratory, Oak Ridge, USA

Abstract
The radial profile of Reynolds stress has been measured in the plasma boundary region of tokamaks and stellarator  plasmas. The electrostatic Reynolds stress (proportional to $\rm\langle\tilde{E}_r \tilde{E}_\theta\rangle$) shows a radial gradient close to the velocity shear layer location, showing that this mechanism can drive significant poloidal flows in the plasma boundary region of fusion plasmas. The generation of poloidal flows by Ion Bernstein Wave (IBW) is under investigation in toroidal plasmas. The radial gradient in the Reynolds stress increases with RF power and radial electric fields are modified at the RF resonance layer.

 

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