Robert Bussard tried to build a small superconducting reactor 30+ years ago. He had a company called Inesco (International Nuclear Energy Systems Company, and

Robert Bussard tried to build a small superconducting reactor 30+ years ago. He had a company called Inesco (International Nuclear Energy Systems Company, and also Italian for igniting, per his collaborator Bruno Coppi). There used to be something about it in Bussard's Wikipedia biography but it looks like it got edited out. I don't know what eventually happened to Inesco but there is still info about it on the web.