Rare-earth-free HTS superconductors and negative-triangularity fusion power
Hephaestus (Hephaestus Technologies) is a London-founded fusion energy company developing rare-earth-free high temperature superconducting magnets and negative triangularity tokamaks, using AI tools for plasma design and materials discovery. Founded in 2019, it completed its first device, Anvil 0, in 2024 and has offices in London, Rome and New York plus a New Jersey production facility.
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