SLAC Job Postings Position Overview: The Stanford Synchrotron Radiation Lightsource (SSRL), a directorate of SLAC National Accelerator Laboratory, is a national Department of Energy Office of Science user facility providing synchrotron radiation for research in biology, chemistry, engineering, environmental science, material science, medicine, and physics. SSRL operates and maintains the 3 GeV electron storage ring SPEAR3, the associated injector facility, and synchrotron-radiation beamlines on