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Petrillo, V; Opromolla, M; Bacci, A; Broggi, F; Drebot, I; Ghiringhelli, G; Puppin, E; Rossetti Conti, M; Rossi, A R; Ruijter, M; Samsam, S; Tagliaferri, A; Rossi, G; Serafini, L
New journal of physics, 07/2020, Letnik: 22, Številka: 7Journal Article
A seeded FEL driven by a linac based on super conducting cavities, generating 108-1010 coherent photons per shot at 2-5 keV with 0.2-1 MHz of repetition rate, can address the need of a source devoted to fine analysis of matter using the linear spectroscopy technique. The seeding scheme described hereafter is a multi-stage cascade upshifting the radiation frequency by a factor 20-40. The x-ray range can be achieved with a seed constituted by a coherent flash in the extreme ultraviolet range provided by an FEL oscillator operating at 12-14 nm. The whole chain of x-ray generation is described by means of start-to-end three-dimensional simulations.
