The SLS was in 2001 with its 2.4GeV electron energy the first medium energy storage ring facility which covered equally
both the soft and the hard x-ray regime. For the soft x-ray all undulators provide variable polarization and up to 30keV
short period, small gap in-vacuum undulators work on high harmonics. Brilliance and flux curves are shown below.
For SwissFEL a new undulator has been developed and is built with local industry partners. The prototype will be
delivered to PSI in february 2013. The undulator support has a modular concept and can host planar in and out of vacuum
magnet arrays as well as APPLE II type structures. The closed frame is made of cast mineral with a wedge-based gap drive
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Contact
Prof. Dr. Luc Patthey Paul Scherrer Institut 5232 Villigen-PSI Switzerland Telephone: +41 56 310 45 62 E-mail: luc.patthey@psi.ch