Dummy Load Prototype Design for ITER Coil Power Supply System

This paper mainly introduces the design of the dummy load prototype, whose functions are to verify the capability of the International Thermonuclear Experimental Reactor 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 large pulse test current, a structure of dry-type air-core water-cooling prototype with epoxy resin casting technique is presented. The finite-element simulation analysis is introduced in detail, focusing on the thermal performance and dynamic stability, especially under the extreme pulse operation condition. In addition, the electromagnetic environment around the dummy load is also analyzed to provide the input for the instrumentations selection and the delimitation of personal safe area. Finally, seismic analysis is introduced to verify the antiseismic property of the dummy load.