Beam profile diagnostics on the NRL SuperIBEX experiment

Three independent and complementary diagnostics have been developed to measure the time-dependence of the beam half-current radius produced by the 5 Mev, 100 kA SuperIBEX electron accelerator at the Naval Research Laboratory. A novel five-element segmented concentric Faraday collector has been built which gives the beam half-current radius with nsec time resolution. Two optical streak cameras and an ultra-fast optical framing camera have been used to give time-resolved measurements of the beam radius from Cerenkov emission produced by thin Teflon or quartz foils placed in the beam path.