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Suppression of higher-order modes in an RF cavity by resistive material
Description
A new 500-MHz cavity which has a simple damped structure for the 1.5-GeV VUV ring will be presented in this paper. The feature of the cavity design is that higher-order modes (HOMs) propagate out from the cavity through the beam-duct with a large diameter and are absorbed in resistive parts in the duct. A low power measurement on a prototype model of the cavity has been carried out and the Q-values of HOMs are confirmed to be drastically reduced. Thus the coupled-bunch instabilities due to HOMs are expected to be sufficiently suppressed. >
Journal
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- Proceedings of International Conference on Particle Accelerators
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Proceedings of International Conference on Particle Accelerators 930-932, 2002-12-30
IEEE
