Burn stabilization via feedback ripple regulation in an ignited tokamak

Active burn stabilization of an ignited tokamak by feedback ripple regulation is considered on the basis of recent investigations on ripple-induced transport with insufficient temperature dependence for passive stabilization. Ripple variation is achieved by asymmetric coil currents in the even and odd tf coils. Reference is made to an intor-like device. Critical performance parameters are obtained as a function of the size of an initial perturbation of the plasma from thermal equilibrium. All critical parameters, subject to technical limitations, are very much on the safe side