Abstract
The Engineering Design Activity (EDA) for the International Thermonuclear Experimental Reactor (ITER) was performed from 1992 under the collaboration of Japan, EU, Russia and the US. In the EDA, the Japan Atomic Energy Research Institute (JAERI) developed and tested the CS Model Coil under the international collaboration in order to develop fabrication technology of large superconducting coils and to demonstrate various properties. The CS Model Coil consists of the Outer Module and the Inner Module, which were pre-compressed by about 86 MN at room temperature with pre-compression structures composed of supporting beam and tension rod. Strain gages were attached to the tension rod to investigate the change of pre-compression force during cool-down, energizing, and warm-up. This paper describes the mechanical behavior of the CS Model Coil during cool-down and warm-up based on the measurement result of the tension rod strain.
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