They're very expensive. (Which is also the problem with current tin plasma sources. They work, but they just aren't cost effective.) There are interesting idea

They're very expensive. (Which is also the problem with current tin plasma sources. They work, but they just aren't cost effective.) There are interesting ideas to downsize synchrotrons though, and if we can both make synchrotrons smaller and semiconductor factories bigger, then perhaps synchrotron sources could make sense. But even then, I worry that if a $20 billion semiconductor plant has only one $1 billion synchrotron source, there is a tremendous amount of risk concentrated in that single source. If the source goes down, the rest of the $20 billion plant goes idle.