He was closely involved in designing, building and commissioning the Relativistic Heavy Ion Collider (RHIC) at BNL. He also worked on several other accelerators, including CESR at Cornell, the SPS collider at CERN, the SSC in Texas, the Tevatron and the Main Injector at Fermilab, and the European Spallation Source in Sweden. He is a fellow of the American Physical Society.

My primary accelerator physics research interests continue to be accelerator design and performance, with a focus on linear and nonlinear beam dynamics. Accelerators of current interest include RHIC, the Electron-Ion Collider (EIC), Accelerator-Driven Sub-critical Reactors, and a potential Muon Collider. The question "How does a particle accelerator work?" is addressed at the graduate student level in a text book by Peggs and Satogata: "Introduction to Accelerator Dynamics", Cambridge University Press, ISBN 978-1-107-13284-9.