Magnesium-Diboride-Based Prototype ELM Coil Fabrication, DC Characterization, and AC Transport-Current-Induced Loss Estimation: A Feasibility Study

In this paper, a trial on fabrication and characterization of the prototype edge-localized-mode coil employing MgB₂ strands has been attempted. The magnetic flux profile of the coil in dc current for a typical transport current is generated using finite-element modeling software. The coil is wound, heat treated, impregnated, and characterized subsequently in dc condition, as well as in ac condition, for a nominal range of frequency. The ac transport-current-induced loss was estimated and measured in terms of temperature rise. The measured temperature rises are found to be comparable with the calculated temperature rise.