Fabrication and vertical test experience of the European X-ray Free Electron Laser 3.9 GHz superconducting cavities
P. Pierini, M. Bertucci, A. Bosotti, J. F. Chen, C. G. Maiano, P. Michelato, L. Monaco, M. Moretti, C. Pagani, R. Paparella, D. Sertore, E. Vogel
DOI 10.1103/PhysRevAccelBeams.20.042006 · Physical Review Accelerators and Beams
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Abstract
We report the experience of the production, processing and qualification testing of the superconducting radio frequency cavities at 3.9 GHz for the third harmonic system at the European XFEL (EXFEL) injector. The rf structure concept, originally developed for the FLASH FEL facility, was adapted to the new interfaces provided by the EXFEL design and the cavities were procured from a qualified vendor, delivered ready for the testing at the INFN infrastructure. A total of 23 cavities, three prototypes and two batches of 10, have been realized and tested up to specifications.
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