ST25 HTS did as far as I can tell — unless TE are lying, but that seems improbable.
Tokamak energy did this back in 2015[1,2] (the article is wrong) [1]: https://tokamakenergy.com/about-us/#trackrecord [2]: https://royalsocietypublishing.org/doi/full/10.1098/rsta.201...
ST25 HTS did as far as I can tell — unless TE are lying, but that seems improbable.
Tokamak energy did this back in 2015[1,2] (the article is wrong) [1]: https://tokamakenergy.com/about-us/#trackrecord [2]: https://royalsocietypublishing.org/doi/full/10.1098/rsta.201...