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Recent progresses in the second generation REBa 2 Cu 3 O 7-x (RE123) coated conductor (CC) have paved a way for the development of superconducting magnets capable of generating fields well above 23.5 T, i.e. the limit of NbTi-Nb 3 Sn-based magnets. However, the RE123 magnet still poses several fundamental and engineering challenges. In this work we review the state-of-the-art of conductor and magnet technologies. The goal is to illustrate a close synergetic relationship between evolution of high-field magnets and advancement in superconductor technology. The paper is organised in three parts: 1) the basics of RE123 CC fabrication technique, including latest developments to improve conductor performance and production throughput; 2) critical issues and innovative design concepts for the RE123-based magnet; and 3) an overview of noteworthy ongoing magnet projects.
Senatore et al. (2014) studied this question.