Coherent, high repetition rate tender x-ray free-electron laser seeded by an extreme ultra-violet free-electron laser oscillator
oleh: V Petrillo, M Opromolla, A Bacci, F Broggi, I Drebot, G Ghiringhelli, E Puppin, M Rossetti Conti, A R Rossi, M Ruijter, S Samsam, A Tagliaferri, G Rossi, L Serafini
| Format: | Article |
|---|---|
| Diterbitkan: | IOP Publishing 2020-01-01 |
Deskripsi
A seeded FEL driven by a linac based on super conducting cavities, generating 10 ^8 –10 ^10 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.