Abstract
Power couplers, used in China-ADS proton linac injector I, are required to transfer 6kW RF power to the superconducting Spoke cavities. At present, first two couplers of coaxial design have been fabricated and accomplished high power test at IHEP. The test results indicated that couplers of this design are qualified to deliver 10kW RF power in continuous travelling wave mode. This paper described the coupler's room temperature test procedures and results, discussed the original high power test terminated due to serious out-gassing and after some modifications. In the final test, the couplers smoothly exceeded the design power level.
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