Pulsed Magnetic Field Testing of Multifilamentary Nb sub 3 Sn Superconducting Wire

摘要

This work confirms that, at a minimum, pulsed field magnets may be used to obtain preliminary qualitative results about superconducting samples. Although the quantitative critical current data is not as reliable as that obtained under steady fields, at high fields there is good agreement between the data. Because of the many factors that may play a role, explanation of the degraded critical currents found under pulsed fields at lower applied fields is difficult. Given the current state of theory, much further investigation would be needed to clarify the precise causes of this effect and its generality to other superconductors. Nonetheless, it is apparent that pulsed field magnets may be effectively used to direct the design process, thus allowing steady field testing facilities to be reserved for testing the more promising materials. (ERA citation 09:018897)