Abstract
This paper mainly introduces the research and development (R&D) of the dummy load prototype, whose functions are to verify the capability of the ITER magnetic power supply systems to operate at their rated power levels without energizing the superconducting coils. The rated inductance is 6.73 mH and the extreme pulse operation mode is 68 kA/15 s on and 900 s off. Therefore, in order to meet the special requirements of the large inductance and the thermal and dynamic stability, a new structure of dry-type air-core watercooling prototype with epoxy resin casting technique is presented, which has a higher energy density in comparison with the traditional structures. The finite-element simulation analysis is introduced in detail, focusing on the thermal performance of coil and water-cooling system during the whole operation and the dynamic stability, especially under the extreme pulse operation condition. In addition, the electromagnetic environment (EME) around the dummy load is also analyzed under normal and pulse operation, which is the input for the instrumentations selection and the delimitation of personal safe area.
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