A multi-sample Cs-sputter negative ion source has been evaluated for generating ~7BeO~- beams for measuring the nuclear-astrophysically important ~7Be(p,γ)~8B reaction at the Holifield Radioactive Ion Beam Facility. The design features and operational parameters of the source are described and measured efficiencies for forming beams of Ni~-, C~- and MgO~- and estimated efficiencies for generating beams of BeO~- for the proposed experiment are presented in this report.
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