They've already built a SPARC-size REBCO magnet, and demonstrated it at 20 Tesla for five hours. https://www.ans.org/news/article-3240/mit-ramps-10ton-magnet-u

They've already built a SPARC-size REBCO magnet, and demonstrated it at 20 Tesla for five hours. https://www.ans.org/news/article-3240/mit-ramps-10ton-magnet-up-to-20-tesla-in-proof-of-concept-for-commercial-fusion/ https://www.ans.org/news/article-3240/mit-ramps-10ton-magnet... https://news.mit.edu/2021/MIT-CFS-major-advance-toward-fusion-energy-0908 https://news.mit.edu/2021/MIT-CFS-major-advance-toward-fusio... It's pretty amazing that they did that without any engineers.