Abstract

The characteristics of the Oak Ridge Isochronous Cyclotron (ORIC) for the injection of heavy‐ions into a separated sector cyclotron have been studied and found to be excellent. With a carbon foil between the accelerators the output energy of the ORIC is sufficient to give a stripped ion beam at least twice the charge state of the ORIC's extracted beam up to mass 200. This allows an ideal magnetic field match to a separated sector cyclotron with a magnet fraction of 0.58. The 37‐MeV 40Ar4+ beam from the ORIC was used to test the lifetime of 20‐μg/cm2 carbon foils. It was found that the stripping characteristics were unchanged after a total transmission of 5 × 1017 particles per cm2. Results of the measurement of the ORIC beam loss as a function of pressure in the cyclotron tank and beam line are also presented.

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