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(THP2/05) Dipole Equilibrium and Stability

M. E. Mauel¹⁾, D. T. Garnier¹⁾, T. Sunn Pedersen¹⁾, P. J. Catto²⁾³⁾, R. J. Hastie²⁾, J. Kesner²⁾, J. J. Ramos²⁾, A. N. Simakov²⁾, S. I. Krasheninnikov^4)
 
1) Columbia University, New York, NY, U.S.A.
²⁾ MIT, Cambridge, MA, U.S.A.
³⁾ Lodestar Research Corporation, Cambridge, MA, U.S.A.
⁴⁾ University of California, San Diego, CA, U.S.A.

Abstract.  A plasma confined in a dipole field exhibits unique equilibrium and stability properties. In particular, equilibria exist at all $\beta$ values and these equilibria are found to be stable to ballooning modes when they are interchange stable. When a kinetic treatment is performed at low beta we also find a drift temperature gradient mode which couples to the MHD mode in the vicinity of marginal interchange stability.

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