engleski

The Flexible Taper Transitions for an In-Vacuum Undulator

In a joint project between SPring-8 and PSI, an in-vacuum undulator U24 was installed in the SLS storage ring during 2001. In this frame, cooled flexible taper transitions were developed. Tests performed on a numerically optimized shape of the tapers have proven the validity of the adopted concept. In a further development step, a family of in-vacuum undulators is currently being designed. These will require an upgrade of the flexible tapers allowing a logitudinal degree of freedom based on a parallel spring translator mechanism. In this work the results of the optimized design of the taper assembly will be presented. A short description of the foreseen set-up being developed for the respective fatigue tests will follow. Depending on the outcome of the experimental assessment, the same concept could then be adopted also for a scraper device.

in-vacuum undulator; flexible taper; FEM analysis; fatigue tests

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