Heavy ion beam probe development

Summary form only given. Heavy ion beam probe diagnostic (HIBP) systems are presently in operation on the Madison Symmetric Torus (MST) at the University of Wisconsin and on a helicon plasma experiment at Rensselaer. Measurements of the radial equilibrium potential profiles ϕ(r) have been successfully obtained with a Heavy Ion Beam Probe (HIBP) in the core (0.25