FLS2018 - List of Authors (Giannessi, L.)

Paper	Title	Page
TUP1WA02	Ultrashort Pulse Generation and Superradiance in FELs
	X. Yang BNL, Upton, Long Island, New York, USA L. Giannessi Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	The generation of a single X-ray isolated spike of radiation with peak power at multi-GW level and femtosecond temporal duration represents an almost unique opportunity in time resolved diffraction imaging of isolated molecules or non-periodic structures, for the possibility of acquiring single shot images before the Coulomb explosion of the sample takes place. Such a condition is met by an FEL operating in superradiant regime when the pulse has a self-similar shape deriving from the combined dynamics of saturation and slippage of the radiation over fresh electrons. We show that the peak of the pulse moves at superluminal speed similarly to the case of pulses propagation in anomalous dispersive active media and it is followed by a long pedestal resulting from the complex dynamics occurring in the tail after saturation. We analyze the dynamical conditions leading to the formation of the main pulse and the following tail and we study the correlation of the tail structure with the longitudinal phase space of the e-beam, providing recipes to partially suppress it.
	Slides TUP1WA02 [5.300 MB]
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FRA1PL01	Summary Report: Linac-Based Light Sources	199
	T.O. Raubenheimer SLAC, Menlo Park, California, USA W. Decking DESY, Hamburg, Germany L. Giannessi Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy L. Giannessi ENEA C.R. Frascati, Frascati (Roma), Italy H.-S. Kang PAL, Pohang, Kyungbuk, Republic of Korea
	This is the summary report of the linac-based light sources working group.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-FRA1PL01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

TUP1WA02

Ultrashort Pulse Generation and Superradiance in FELs

X. Yang
BNL, Upton, Long Island, New York, USA
L. Giannessi
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

The generation of a single X-ray isolated spike of radiation with peak power at multi-GW level and femtosecond temporal duration represents an almost unique opportunity in time resolved diffraction imaging of isolated molecules or non-periodic structures, for the possibility of acquiring single shot images before the Coulomb explosion of the sample takes place. Such a condition is met by an FEL operating in superradiant regime when the pulse has a self-similar shape deriving from the combined dynamics of saturation and slippage of the radiation over fresh electrons. We show that the peak of the pulse moves at superluminal speed similarly to the case of pulses propagation in anomalous dispersive active media and it is followed by a long pedestal resulting from the complex dynamics occurring in the tail after saturation. We analyze the dynamical conditions leading to the formation of the main pulse and the following tail and we study the correlation of the tail structure with the longitudinal phase space of the e-beam, providing recipes to partially suppress it.

Slides TUP1WA02 [5.300 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRA1PL01

Summary Report: Linac-Based Light Sources

199

T.O. Raubenheimer
SLAC, Menlo Park, California, USA
W. Decking
DESY, Hamburg, Germany
L. Giannessi
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
L. Giannessi
ENEA C.R. Frascati, Frascati (Roma), Italy
H.-S. Kang
PAL, Pohang, Kyungbuk, Republic of Korea

This is the summary report of the linac-based light sources working group.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-FRA1PL01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)