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Article

High Repetition Rate and Coherent Free-Electron Laser in the X-Rays Range Tailored for Linear Spectroscopy

1
Department of Physics, University of Milan, Via Celoria 16, 20133 Milano, Italy
2
Istituto Nazionale di Fisica Nucleare—Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
3
Istituto Nazionale di Fisica Nucleare - Sezione di Milano, Laboratorio di Acceleratori e Superconduttivitá Applicata, Via F.lli Cervi 201, 20090 Segrate, Italy
4
Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milano, Italy
5
European Nuclear Energy Agency, Via Enrico Fermi 40, 00044 Frascati, Italy
6
Department of Physics, Mohamed V University, 10000 Rabat, Marocco
*
Author to whom correspondence should be addressed.
Instruments 2019, 3(3), 47; https://doi.org/10.3390/instruments3030047
Received: 17 July 2019 / Revised: 28 August 2019 / Accepted: 3 September 2019 / Published: 9 September 2019
(This article belongs to the Special Issue Physics and Applications of High Brightness Beams)
Fine time-resolved analysis of matter—i.e., spectroscopy and photon scattering—in the linear response regime requires fs-scale pulsed, high repetition rate, fully coherent X-ray sources. A seeded Free Electron Laser (FEL) driven by a Linac based on Super Conducting cavities, generating 10 8 10 10 coherent photons at 2–5 keV with 0.2–1 MHz of repetition rate, can address this need. Three different seeding schemes, reaching the X-ray range, are described hereafter. The first two are multi-stage cascades upshifting the radiation frequency by a factor of 10–30 starting from a seed represented by a coherent flash of extreme ultraviolet light. This radiation can be provided either by the High Harmonic Generation of an optical laser or by an FEL Oscillator operating at 12–14 nm. The third scheme is a regenerative amplifier working with X-ray mirrors. The whole chain of the X-ray generation is here described by means of start-to-end simulations. View Full-Text
Keywords: FEL seeding; compact FEL FEL seeding; compact FEL
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MDPI and ACS Style

Petrillo, V.; Opromolla, M.; Bacci, A.; Drebot, I.; Ghiringhelli, G.; Petralia, A.; Puppin, E.; Conti, M.R.; Rossi, A.R.; Tagliaferri, A.; Samsam, S.; Serafini, L.; Rossi, G. High Repetition Rate and Coherent Free-Electron Laser in the X-Rays Range Tailored for Linear Spectroscopy. Instruments 2019, 3, 47. https://doi.org/10.3390/instruments3030047

AMA Style

Petrillo V, Opromolla M, Bacci A, Drebot I, Ghiringhelli G, Petralia A, Puppin E, Conti MR, Rossi AR, Tagliaferri A, Samsam S, Serafini L, Rossi G. High Repetition Rate and Coherent Free-Electron Laser in the X-Rays Range Tailored for Linear Spectroscopy. Instruments. 2019; 3(3):47. https://doi.org/10.3390/instruments3030047

Chicago/Turabian Style

Petrillo, Vittoria, Michele Opromolla, Alberto Bacci, Illya Drebot, Giacomo Ghiringhelli, Alberto Petralia, Ezio Puppin, Marcello Rossetti Conti, Andrea Renato Rossi, Alberto Tagliaferri, Sanae Samsam, Luca Serafini, and Giorgio Rossi. 2019. "High Repetition Rate and Coherent Free-Electron Laser in the X-Rays Range Tailored for Linear Spectroscopy" Instruments 3, no. 3: 47. https://doi.org/10.3390/instruments3030047

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