SLAC, at least, works by deflecting the electrons, rather than by slowing them down via Bremsstrahlung. https://lcls.slac.stanford.edu/overview https://lcls.sl

SLAC, at least, works by deflecting the electrons, rather than by slowing them down via Bremsstrahlung. https://lcls.slac.stanford.edu/overview https://lcls.slac.stanford.edu/overview The result is a nice, tight, collimated beam of hard X-rays. Pretty awesome! But I'm not sure that SLAC has the power for this experiment - they probably would have done it already if they did...