HOME PROGRAM REGISTRATION HOTEL TRANSPORTATION SUBMIT ABSTRACT ABSTRACT LIST PROGRAM COMMITTEE MORE ON MADISON	Innovative Divertor Solutions for High Confinement and Acceptable Heat Fluxes Author: Kotschenreuther M. Coauthor: P. M. Valanju, J.C. Wiley, M. Pekker Institution : Fusion Research Center and Institute for Fusion Studies Abstract text: Two novel magnetic divertor geometries are presented: 1) inducing a second axi-symmetric flux expansion region along the separatrix, and 2) the extraction of the separatrix flux to outside the TF coils with low plasma TF ripple. These allow a low recycling regime which can enable much improved core confinement. In addition, the engineering advantages of a highly detached state can be realized without the poor confinement and disruptive tendencies found in conventional divertor magnetic geometries. Unoptimized coils for 1) and 2) are complex, so simpler designs are being developed with codes used for the National Compact Stellarator Experiment coils. Some preliminary results of coil optimization will be presented. The first idea can be more easily tested on existing machines, in particular STs.