Description: We report here the status of the ion ring experimental program at Cornell. Ion rings having 3 x 10/sup 15/. 430 keV protons have been trapped in the Ion Ring Experiment (IREX) in a 0.8 T magnetic field. Trapping was achieved using a static downstream mirror and a fast (1.7 ..mu..sec rise time) gated upstream mirror. Ring protons were detectable for up to 4 ..mu..sec (about 50 times both the ion cyclotron period and the injection pulse duration). On LONGSHOT II, up to 1 kJ of less than or equal to 150 keV ions has been produced in 0.4 to 0.9 ..mu..sec pulses using an active anode plasma source as well as the standard surface flashover source. The LONGSHOT II beam will shortly be formed into a rotating proton layer and injected into a preformed (0.3 m diameter and 2.5 m long) Z-discharge plasma to study axial energy dissipation processes. This proton layer ultimately is to be combined with a compact toroid plasma.
Date: May 1, 1985
Creator: Schamiloglu, E.; Greenly, J.B.; Hammer, D.A.; Pedrow, P.D. & Sudan, R.N.
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