Guidance of Divertor Channel by Cusp-Like Magnetic Field for Tokamak Devices

Abstract

A divertor magnetic configuration is proposed that significantly reduces heat load on the divertor plates in tokamak devices. The proposed configuration utilizes an additional cusp-like magnetic field generated by four poloidal coils for expanding the divertor channels. This not only allows a significant reduction of the heat load due to expansion of the divertor channels but also hardly affects the original magnetic configuration of the core plasma. These special features are useful for fusion reactor designs.