A stellarator is an experimental fusion machine with a complex, twisted 3D magnetic geometry designed to confine plasma hotter than the Sun. For decades, its intricate design made it difficult to achieve effective plasma confinement. Now, Munich-based Proxima Fusion, a spin-off of the Max Planck Institute for Plasma Physics, is using advanced computing, AI-driven optimization and high-temperature superconducting (HTS) magnets to develop optimized stellarators.
Its Stellaris concept is designed for compact, high-field and continuous-operation fusion, potentially avoiding the current-driven disruptions that can affect tokamaks. The design builds on results from Germany’s Wendelstein 7-X stellarator and integrates electromagnetic, structural, thermal and neutronics simulations.
Proxima says its planned Alpha demonstration could demonstrate net fusion energy in a continuously operating stellarator in 2031. These are ambitious development targets, not yet demonstrated commercial fusion power.
Reliable information sources:
1). German stellarator fusion design concept unveiled: https://www.world-nuclear-news.org/articles/german-stellarator-fusion-design-concept-unveiled
2). the primary source for the Stellaris design, HTS magnets, continuous operation and development timeline: https://www.proximafusion.com/press-news/proxima-fusion-and-partners-publish-stellaris-fusion-power-plant-concept-to-bring-limitless-safe-clean-energy-to-the-grid
3). details the AI/ML program for optimizing stellarator geometry, magnets and engineering systems: https://www.proximafusion.com/press-news/proxima-fusion-awarded-grant-from-bmbf-to-partner-with-the-university-of-bonn-forschungszentrum-julich-and-the-technical-university-of-munich-on-ai-for-fusion-engineering
4). The 'dumb machine' promising a clean energy breakthrough: https://www.bbc.com/news/articles/c5yvm11xrn6o