Speaker
Marco Calvi
(PSI)
Description
The next hard X-ray line (2025-2029) at SwissFEL, Porthos, is planned to further extend the photon energy of Aramis, reaching wavelength down to 0.03 nm. Harmonic lasing and inter-undulator chicanes will be implemented to meet this target. Nevertheless the undulator period length must decrease to 10 mm while the K value has to increase to 2.4 with a vacuum gap above 4 mm. These parameters cannot be achieved with conventional technology, neither with advanced permanent magnet cryogenic undulators: it requires the use of superconductors. An overview of this technology will be given, focused on recent Nb3Sn experimental results but alternative approach, like bulk HTS superconductor, will also be discussed.
Author
Marco Calvi
(PSI)
Co-authors
Dr
Thomas Schmidt
(PSI)
Sven Reiche
(Paul Scherrer Institute)
Eduard Prat Costa
(PSI - Paul Scherrer Institute)
Dr
Romain Ganter
(PSI)
