The construction of the Wendelstein 7-X stellarator
نویسنده
چکیده
The construction status of the large superconducting stellarator Wendelstein 7-X is reported. The manufacturing and tests of the main components are reviewed and major design tasks during the device assembly phase are summarized. The assembly is currently proceeding on three out of five assembly stands. Four out of ten magnet half-modules are completed. Major work packages are the electric and cryogenic connection of magnets, support ring and thermal shield. Other main tasks are the thermal insulation, the port assembly and the manufacturing and assembly of the actively cooled in-vessel components. The construction work is well on track and the assembly will be completed in mid 2014 as planned. A staged approach to steadystate operation with 10MW heating power is presented, where the key element is an inertially cooled testdivertor unit for the development of high-power steady-state scenarios. It is replaced after a first short-pulse operation phase by the actively cooled divertor.
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