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Stewart Prager is a professor of astrophysical sciences at Princeton University, and an affiliated faculty member with the Program on Science and Global Security. From 2009–2016, he was director of the Princeton Plasma Physics Laboratory. Prior to that, he was professor of physics at the University of Wisconsin-Madison, where he was director of the Madison Symmetric Torus experimental program and director of the Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, a multi-institutional NSF Physics Frontier Center. From 2012–2019, he co-directed the Max-Planck/Princeton Center for Plasma Physics, a collaboration between Princeton and the Max Planck Society in Germany. Prager received the Dawson Award for Excellence in Plasma Physics from the American Physical Society (APS) and the Leadership and Distinguished Career awards from Fusion Power Associates. His service has included chair of the Department of Energy Fusion Energy Sciences Advisory Committee, President of the University Fusion Association, Chair of the APS Division of Plasma Physics. He is currently vice-chair of the APS Forum on Physics and Society. He holds a PhD in plasma physics from Columbia University.

Research Interests


Until 2018 my research was dedicated to plasma physics, with applications to fusion energy and, to a lesser extent, astrophysics. In 2018, I switched my focus to security issues. My initial and current activity is the startup, with SGS colleagues, of a project to engage and activate physicists in the United States on the issue of nuclear threat reduction. The project is funded by the American Physical Society.



Essentially all publication and talks are in the areas of plasma physics and fusion energy, and are not listed here.