Speaker
Description
Renaissance Fusion is advancing the development of a stellarator-based commercial nuclear fusion reactor by combining several key enabling technologies. At the core is a novel magnet system that employs wide, laser-engraved high-temperature superconductors (HTS) to generate the complex three-dimensional stellarator magnetic fields, while simultaneously guiding a liquid metal flow along the reactor walls. This configuration provides both effective neutron shielding and efficient thermal management.
As a proof of concept, we have built a 1.2 metre diameter HTS pseudo-Helmholtz coil pair capable of producing a 1 tesla hot bore (6 tesla at the coil). This will soon be deployed in a hot liquid metal levitation test around the perimeter of a 1 metre diameter chamber. The magnets employ non-insulated, dry-wound HTS coils cooled by conduction at 20K using a custom cryogenic system.
We present the design and experimental validation of this system, with particular emphasis on the custom cryogenic system design and advanced thermal insulation strategies that limit heat transfer to the 20 K magnets located less than 40 mm from the 850 °C liquid metal chamber.
| Submitters Country | France |
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| Are you a student? | No |
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