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Akademický článek

Addendum: Experimental evidence of intrabeam scattering in a free-electron laser driver (2020 New J. Phys. 22 083053)

Autor: S Di Mitri, G Perosa, A Brynes, I Setija, S Spampinati, P H Williams, A Wolski, E Allaria, S Brussaard, L Giannessi, G Penco, P R Rebernik, M Trov

Publikováno v: New Journal of Physics, Vol 24, Iss 3, p 039401 (2022)

A conceptual inaccuracy in the calculation of energy spread induced by intrabeam scattering in the presence of linear acceleration is put in evidence. A new self-consistent equation is presented. Two new solutions are provided in the approximation of

Externí odkaz: https://doaj.org/article/0518c0cacfa545df856fc146a33a845a

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Akademický článek

Experimental evidence of intrabeam scattering in a free-electron laser driver

Autor: S Di Mitri, G Perosa, A Brynes, I Setija, S Spampinati, P H Williams, A Wolski, E Allaria, S Brussaard, L Giannessi, G Penco, P R Rebernik, M Trovò

Publikováno v: New Journal of Physics, Vol 22, Iss 8, p 083053 (2020)

The effect of multiple small-angle Coulomb scattering, or intrabeam scattering (IBS) is routinely observed in electron storage rings over the typical damping time scale of milliseconds. So far, IBS has not been observed in single pass electron accele

Externí odkaz: https://doaj.org/article/34c686f4b7d84a2c9ed0d7ece5073c3a

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Akademický článek

Single-shot transverse coherence in seeded and unseeded free-electron lasers: A comparison

Publikováno v: Physical Review Accelerators and Beams, Vol 25, Iss 4, p 040701 (2022)

The advent of x-ray free-electron lasers (FELs) drastically enhanced the capabilities of several analytical techniques, for which the degree of transverse (spatial) coherence of the source is essential. FELs can be operated in self-amplified spontane

Externí odkaz: https://doaj.org/article/49c731cdf2364b8191833a3ca75f5475

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Akademický článek

Characterization of soft x-ray echo-enabled harmonic generation free-electron laser pulses in the presence of incoherent electron beam energy modulations

Autor: N. S. Mirian, G. Perosa, E. Hemsing, E. Allaria, L. Badano, P. Cinquegrana, M. B. Danailov, G. De Ninno, L. Giannessi, G. Penco, S. Spampinati, C. Spezzani, E. Roussel, P. R. Ribič, M. Trovó, M. Veronese, S. Di Mitri

Publikováno v: Physical Review Accelerators and Beams, Vol 24, Iss 8, p 080702 (2021)

Echo-enabled harmonic generation free-electron lasers (EEHG FELs) are promising candidates to produce fully coherent soft x-ray pulses by virtue of efficient high-harmonic frequency up-conversion from ultraviolet lasers. The ultimate spectral limit o

Externí odkaz: https://doaj.org/article/39e91867b4d44106bffb583be38b4040

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Akademický článek

Bridging the gap of storage ring light sources and linac-driven free-electron lasers

Autor: S. Di Mitri, M. Cornacchia, B. Diviacco, G. Perosa, F. Sottocorona, S. Spampinati

Publikováno v: Physical Review Accelerators and Beams, Vol 24, Iss 6, p 060702 (2021)

High-gain free-electron lasers (FELs) are driven by short, high-charge density electron beams as only produced at dedicated single pass or recirculating linear accelerators. We describe new conceptual, technical, and modeling solutions to produce sub

Externí odkaz: https://doaj.org/article/c67ba2efa74349648939cc76ccdb4b3c

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Akademický článek

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Akademický článek

Enhanced seeded free electron laser performance with a 'cold' electron beam

Autor: G. Penco, G. Perosa, E. Allaria, S. Di Mitri, E. Ferrari, L. Giannessi, S. Spampinati, C. Spezzani, M. Veronese

Publikováno v: Physical Review Accelerators and Beams, Vol 23, Iss 12, p 120704 (2020)

FERMI is a seeded free electron laser (FEL) based on the high gain harmonic generation (HGHG) scheme and has been generating intense and fully coherent extreme ultra-violet and soft x-ray pulses for several years. The high-degree performance of the F

Externí odkaz: https://doaj.org/article/8144578e3b36419da0c4768985bd0fa4

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Akademický článek

Linear optics control of sideband instability for improved free-electron laser spectral brightness

Autor: G. Perosa, E. M. Allaria, L. Badano, N. Bruchon, P. Cinquegrana, M. B. Danailov, A. Demidovich, G. De Ninno, L. Giannessi, N. Mirian, G. M. Penco, P. Rebernik, E. Roussel, P. Sigalotti, S. Spampinati, M. Veronese, M. Trovò, S. Di Mitri

Publikováno v: Physical Review Accelerators and Beams, Vol 23, Iss 11, p 110703 (2020)

Extension of stable longitudinal coherence from vacuum ultraviolet to x rays is highly sought after in the free-electron laser (FEL) community, but it is often prevented by bandwidth broadening originated in the electron beam microbunching instabilit

Externí odkaz: https://doaj.org/article/389f142fea8148a68f10628b960c9bbb

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Akademický článek

Microbunching instability characterization via temporally modulated laser pulses

Publikováno v: Physical Review Accelerators and Beams, Vol 23, Iss 10, p 104401 (2020)

High-brightness electron bunches, such as those generated and accelerated in free-electron lasers (FELs), can develop small-scale structure in the longitudinal phase space. This causes variations in the slice energy spread and current profile of the

Externí odkaz: https://doaj.org/article/b55586a648874dcd94d9b25720f59dc6

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