REVIEW OF HIGH POWER CW COUPLERS FOR SUPERCONDUCTING CAVITIES

A number of high power fundamental input couplers for superconducting cavities operating in CW mode have been developed in recent years around the world. Some couplers have already been in service for many years delivering hundreds of kilowatts of RF power to beams. In this paper we will summarize experience accumulated in different laboratories and review design options and technical issues associated with R&D, testing and operation of the CW high power couplers. Several future projects will be discussed to highlight new requirements and design challenges.

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