https://broughttolight.ucsf.edu/2013/12/03/stones-synchrotron/

This compelling photograph (which, despite appearances, is not a scene from a sci-fi movie) depicts Dr. Robert Stone with the machine he created, the 70MeV electron synchroton. The synchrotron was a type of particle accelerator used to treat cancer patients with radiation from 1956 to 1964. Stone’s work contributed greatly to the safe clinical use of radiation.