Abstract
RFQ1 is an accelerator project for the development of high-current CW radiofrequency quadrupole (RFQ) proton accelerators. The injector is designed to provide a matched 50 keV multibeamlet DC proton current, variable up to 90 mA, to the RFQ. The accelerator is a 100% duty factor radiofrequency quadrupole, designed to accelerate 75 mA of protons to a final energy of 600 keV. The experimental program of RFQ1-600 has been completed and the major design goals have been achieved. The RFQ proved to be a robust and reliable machine capable of operating up to the 1.6 Kilpatrick field level. A high tolerance to CW beam spill (>30 mA) in the structure facilitated the measurement of beam parameters over a range of off-optimum operating conditions. Measured transmission and emittance were in agreement with PARMTEQ code predictions over a wide range of operating conditions. >
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