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(THP2/34) Generation of Plasma Rotation by ICRH in Tokamaks

   
C. Chang ¹, C. K. Phillips ², R. B. White ², S. Zweben ², P. T. Bonoli ³, J. Rice ³, M. Greenwald ³, J. S. deGrassie ^4
 
1 Courant Institute, New York University, 251 Mercer St., New York, N.Y. 10012 and Department of Physics, KAIST, Korea
² Princeton Plasma Physics Laboratory, Princeton, NJ 08543
³ Plasma Science and Fusion Center, MIT, Cambridge, MA 02139-4307
⁴ General Atomics, P.O. Box 85608, San Diego, CA 92121-9784

Abstract
A physical mechanism to generate plasma rotation by ICRH is presented in a tokamak geometry. By breaking the omnigenity of resonant ion orbits, ICRH can induce a non-ambipolar minor-radial flow of resonant ions. This induces a return current  $j_p^r$ in the plasma, which then drives plasma rotation through the $j_p^r \times B$ force. It is estimated that the fast-wave power in the present-day tokamak experiments can be strong enough to give a significant modification to plasma rotation.

 

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