Versatile modulators for laser-based FEL seeding at SwissFEL
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Published on: March 20, 2015
Marco Calvi1, Xiaoyang Liang1, Eugenio Ferrari2
1Photon Science Division, Paul Scherrer Institute, 5232 Villigen, Switzerland.
Abstract:
The Paul Scherrer Institute is implementing laser-based seeding in the soft X-ray beamline (Athos) of its free-electron laser, SwissFEL, to enhance the temporal and spectral properties of the delivered photon pulses. This technique requires, among other components, two identical modulators for coupling the electron beam with an external laser with a wavelength range between 260 and 1600 nm. The design, magnetic measurements results, alignment, operation and also details of the novel and exotic magnetic configuration of the prototype are described.
