Intrinsically steady state tokamaks

It is shown that tokamaks can be intrinsically steady state without seed cu rrents by coupling potato bootstrap current in the region close to the magn etic axis to the banana bootstrap current away from the axis. The equilibri a found are highly elongated (e.g. kappa = 3) and have naturally reversed s hear profiles. The vertical instability of elongated tokamaks and the theor y of the enhanced reversed shear mode for this class of equilibria are also developed.