There’s a lot of excitement about a new approach to fusion power:
• Henry Fountain, Compact nuclear fusion reactor is ‘very likely to work,’ studies suggest, The New York Times, 29 September 2020.
Scientists developing a compact version of a nuclear fusion reactor have shown in a series of research papers that it should work, renewing hopes that the long-elusive goal of mimicking the way the sun produces energy might be achieved and eventually contribute to the fight against climate change.
Construction of a reactor, called SPARC, which is being developed by researchers at the Massachusetts Institute of Technology and a spinoff company, Commonwealth Fusion Systems, is expected to begin next spring and take three or four years, the researchers and company officials said.
Although many significant challenges remain, the company said construction would be followed by testing and, if successful, building of a power plant that could use fusion energy to generate electricity, beginning in the next decade.
This ambitious timetable is far faster than that of the world’s largest fusion-power project, a multinational effort in Southern France called ITER, for International Thermonuclear Experimental Reactor. That reactor has been under construction since 2013 and, although it is not designed to generate electricity, is expected to produce a fusion reaction by 2035.
But fusion has been twenty years off since the 1950s. What’s the evidence that Sparc will work? I guess most of the evidence is here—a series of seven papers, which luckily are available open-access:
• Status of the SPARC physics basics, Journal of Plasma Physics 86 (2020).
I have not read these! And even if I did, since I’m not an expert on fusion reactors—obviously a tricky subject—I’m not sure how much my impression would help.
Do you know any commentary on SPARC from other experts on fusion reactors? The more detailed, the better. All I’ve seen so far are very sketchy remarks from people who don’t seem to know what they’re talking about.