Development and measurements of a technological cavity for 350MHz high current proton RFQ

A full-dimension oxygen-free-copper technological cavity was developed for the study on the design and the technological process of a high-current proton RFQ. The physical and mechanical design, machining and brazing technological studies, and RF performance measurements and tuning were introduced. An ideal field distribution could be reached by tuning cavity, whose consistence and smoothness of the field distributions in the four quadrants meet the demands of use. Its dipole components are small enough, too.