Fusion+ (which I think is basically the TL12 technology) was detailed in Starship Operators Manual, from 2024. Essentially, it's gravitics assisted AND nuclear damper assisted. Earlier fusion systems probably did make use of gravitics, since that tech comes in around the same time as viable fusion plants. Maybejust the part 1 of Fusion+, using gravitic squeezing as a supplement to electromagnetic containment?
