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(THP2/29) Intrinsically Steady-State Tokamaks

   
K. C. Shaing , A. Y. Aydemir , R. D. Hazeltine 
Institute for Fusion Studies, The University of Texas at Austin, Austin TX 78712, USA
 
W. A. Houlberg 
Oak Ridge National Lab., Oak Ridge, TN 37831, USA
 
M. C. Zarnstorff 
Princeton Plasma Plasma Physics Lab., Princeton, NJ 08543, USA

Abstract
It is shown that tokamaks can be intrinsically steady state without seed currents by coupling potato bootstrap current  in the region close to the magnetic axis to the banana bootstrap current away from the axis. The equilibria we find are highly elongated (e.g. $\kappa = 3$) and have naturally reversed shear  profiles. The vertical instability of elongated tokamaks and theory of enhanced reversed shear mode for this class of equilibria are also developed.

 

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