Abstract

The ASDEX UG tokamak poloidal field coil system will comprise three ohmic heating coils and three vertical field coils. The ohmic heating coils consist of a highly excited coil in the central bore of the toroidal field magnet and coils outside the toroidal magnet arranged in pairs symmetric to the torus mid-plane. This coil arrangement is expected to generate a magnetic flux swing of about 9.5 Vs for a total discharge time of the plasma of 10s. The vertical field coils can be arranged a) all outside the toroidal magnet system, and b) partially between the toroidal magnet system and the vacuum vessel, likewise in pairs symmetric to the torus midplane.

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