Coupled EM-Thermo-Mechanical Analysis of and High Frequency Current Detector for Use in the International Thermonuclear Experimental Fusion Reactor (ITER)

Standard high frequency voltage and current monitoring equipment is currently used, for automatic control and protection of the power coupling equipment, in thermonuclear plasma heating experiments. In a fusion reactor experiment such as ITER (International Thermonuclear Experimental Reactor), these devices would have to operate in the reactor vessel and therefore would be submitted to severe electromechanical, thermal and nuclear loads. The development of new equipment, capable of operation in a reactor environment, is therefore necessary. The use of a high frequency coaxial resistive current probe, operating on the principle of a coaxial current shunt, has been recently proposed [1]. In this paper the detailed coupled high frequency, electromagnetic, thermal and structural analysis of the probe is presented.
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