Leadership
Argonne integrates world-class science, engineering, and user facilities to deliver innovative research and technologies. We create new knowledge that addresses the scientific and societal needs of our nation.

Peter B. Littlewood
Peter B. Littlewood, Director, Argonne National Laboratory
Director, Argonne National Laboratory

Peter B. Littlewood is the Director of Argonne National Laboratory, one of the nation’s largest science and engineering research centers, and a Professor of Physics in the James Franck Institute at the University of Chicago. Dr. Littlewood came to Argonne in 2011 after being appointed Associate Laboratory Director of Argonne's Physical Sciences and Engineering directorate, which focuses on discovery science across a broad range of disciplines, and on creating and understanding new materials and chemistries that address the grand challenges in energy and the environment.

Mark Peters
Mark Peters, Deputy Lab Director for Programs
Deputy Laboratory Director for Programs

Dr. Mark Peters is the Deputy Laboratory Director for Programs at Argonne
National Laboratory (ANL). He is responsible for the management and integration
of the Laboratory’s science and technology portfolio, strategic planning,
Laboratory Directed Research and Development (LDRD) program, and
technology development and commercialization. Dr. Peters also serves as a
senior advisor to the Department of Energy on nuclear energy technologies and research and development programs, and nuclear waste policy. As a recognized expert in nuclear fuel cycle technologies and nuclear waste management, Dr. Peters is called upon frequently to provide expert testimony to Congress and to advise in formulation of policies for nuclear fuel cycles, nonproliferation, and nuclear waste disposal.

Paul Kearns
Paul Kearns, Deputy Lab Director for Operations and Chief Operations Officer
Deputy Laboratory Director for Operations and Chief Operations Officer

Paul K. Kearns is Deputy Laboratory Director for Operations and Chief Operations Officer for the U.S. Department of Energy's Argonne National Laboratory. He brings nearly three decades of management experience to the position, as well as a strong background in science and engineering.

Alfred P. Sattelberger
Alfred P. Sattelberger, Associate Laboratory Director, Energy Engineering and Systems Analysis
Associate Laboratory Director

Alfred P. Sattelberger is Associate Laboratory Director for Energy Engineering and Systems Analysis (EESA). Sattelberger oversees Argonne’s programs in energy research—including energy storage, renewable energy, energy efficiency and nuclear energy—and national security.

G. Brian Stephenson
G. Brian Stephenson, Associate Laboratory Director, Photon Sciences
Associate Laboratory Director

G. Brian Stephenson is Associate Laboratory Director for Photon Sciences (PSC).

Rick Stevens
Rick Stevens, Associate Laboratory Director, Computing, Environment and Life Sciences
Associate Laboratory Director

Rick Stevens is Associate Laboratory Director for Computing, Environment and Life Sciences (CELS). Stevens oversees a research program that connects computing to several areas of inquiry, and heads Argonne's research initiatives for both exascale computing and computational biology. He is a professor in the Department of Computer Science at the University of Chicago, a Senior Fellow of the Computation Institute, and a Senior Fellow of the Institute for Genomics and Systems Biology.