Fine time-resolved analysis of matter—i.e., spectroscopy and photon scattering—in the linear responseregime requires a fs-scale pulsed, high repetition rate, fully coherent x-ray source. A seeded free-electronlaser (FEL) driven by a super-conducting linac, generating108–1010coherent photons at 2–5 keV withabout 0.5 MHz of repetition rate, can address this need. The seeding scheme proposed is the echo-enabledharmonic generation, alimented by a FEL oscillator working at 13.6 nm with a cavity based on Mo-Simirrors. The whole chain of the x-ray generation is here described by means of start-to-end simulations.Comparisons with the self-amplified spontaneous emission and a fresh-bunch harmonic cascade performedwith similar electron beams show the validity of this scheme.

High-repetition rate and coherent free-electron laserin the tender x rays based on the echo-enabledharmonic generation of an ultraviolet oscillator pulse / N.S. Mirian, M. Opromolla, G. Rossi, L. Serafini, V. Petrillo. - In: PHYSICAL REVIEW. ACCELERATORS AND BEAMS. - ISSN 2469-9888. - 24:5(2021 May 27). [10.1103/PhysRevAccelBeams.24.050702]

High-repetition rate and coherent free-electron laserin the tender x rays based on the echo-enabledharmonic generation of an ultraviolet oscillator pulse

M. Opromolla
Secondo
;
G. Rossi;V. Petrillo
Ultimo
2021-05-27

Abstract

Fine time-resolved analysis of matter—i.e., spectroscopy and photon scattering—in the linear responseregime requires a fs-scale pulsed, high repetition rate, fully coherent x-ray source. A seeded free-electronlaser (FEL) driven by a super-conducting linac, generating108–1010coherent photons at 2–5 keV withabout 0.5 MHz of repetition rate, can address this need. The seeding scheme proposed is the echo-enabledharmonic generation, alimented by a FEL oscillator working at 13.6 nm with a cavity based on Mo-Simirrors. The whole chain of the x-ray generation is here described by means of start-to-end simulations.Comparisons with the self-amplified spontaneous emission and a fresh-bunch harmonic cascade performedwith similar electron beams show the validity of this scheme.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/03 - Fisica della Materia
2021
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/848219
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