John Sarff

John Sarff is a Professor in the Department of Physics at the University of Wisconsin-Madison, specializing in plasma physics with a focus on tokamak and reversed field pinch (RFP) research. His work explores magnetohydrodynamic (MHD) stability, runaway electron dynamics, and magnetic reconnection phenomena in fusion devices such as the Madison Symmetric Torus (MST) and DIII-D tokamak.

• Key Research Areas: Tokamak disruptions, RFP relaxation, gyrokinetic simulations, and anomalous transport.
• Labs/Institutions: Wisconsin Plasma Physics Laboratory (WiPPL), MST, DIII-D collaborations.
• Techniques: Development of advanced diagnostics (e.g., Bdot-Mach probes, soft X-ray cameras) and computational modeling (NIMROD code).