Stephen Peggs is a senior physicist at Brookhaven National Laboratory (BNL) in New York, an adjunct professor in physics and astronomy at Stony Brook University and a visiting scientist at Cornell University. He is a fellow of the American Physical Society.
He has worked internationally on a spectrum of accelerators, starting with the Cornell Electron Storage Ring, the Super Proton Synchrotron collider at CERN, the Superconducting Super Collider in Texas, and the Tevatron and the Main Injector at Fermilab. After establishing a home base at BNL in 1992, he first was closely involved in building and commissioning the Relativistic Heavy Ion Collider. In this millennium he lead the U.S.-LHC Accelerator Research Program and worked on the Rapid Cycling Medical Synchrotron design before being posted to the green-field site of the European Spallation Source in Sweden. Currently he is Project Director for the Cornell-BNL Electron Test Accelerator, under construction at Cornell University.