Development of Bi-2212 Insert Coils for Ultra High Field Magnet Applications

Ziad Melhem, Steven Ball, Steve Chappell
Oxford Instruments Nanoscience, Tubney Woods, Abingdon, Oxon, OX13 5QX, UK

Ultra high field magnets for research applications require development of insert coils developed from high temperature superconductor materials (HTS) like Bi-2212 round wires. Integration of an outer, wide bore, magnet fabricated from low temperature superconductor materials (LTS) coils with insert HTS coils will entail understanding of the quench behavior of the combined system and crucial for the safe energization and operation of compact high field magnets where quench management of LTS differ for those of HTS coils. In the present study, the quench behavior of the HTS coils and the LTS coils used to provide the background field were measured and analyzed. The analysis is highly relevant to the design of high field wide bore magnets as well as ultra high field magnets using integrated LTS and HTS coils.

Full paper is available here (this link opens a new window).