Description  Claims  Drawing  Cited references 

US6445267A   [0003] 
US6657515A   [0003] 
JP2008117667A   [0006] 

Low-Beta Superconducting RF Cavity Tune Options   [0004] 
High Intensity Linac Driver for the Spiral-2 Project: Design of Superconducting 88 MHz Quarter Wave Resonators (Beta 0.12), Power Couplers and Cryomodules   [0004] 
An innovative tuning system for superconducting accelerating cavities   [0005]