Abstract
A new upper divertor with in-vessel coils to investigate ‘advanced’ magnetic configurations will be installed in ASDEX Upgrade. ‘Advanced’ magnetic configurations are part of a risk mitigation strategy should the conventional divertor configuration approach not be applicable for future fusion reactors. The concept of the new upper divertor, Div-IIo, consists of an outer divertor with embedded divertor coils, an inner divertor and a cryo pump with 15m3/s effective pumping speed in the private flux region. The new divertor coils will be designed for 50kAt and can be operated with 5s plateau phase. This paper presents the design concept of the divertor and coil support structure, the coils and the cryo pump. In addition the forces to the divertor structure due to normal operation and during disruptions are discussed.
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