A compact and cost-effective hard X-ray free-electron laser driven by a high-brightness and low-energy electron beam

E Prat, R Abela, M Aiba, A Alarcon, J Alex, Y Arbelo… - Nature …, 2020‏ - nature.com
We present the first lasing results of SwissFEL, a hard X-ray free-electron laser (FEL) that
recently came into operation at the Paul Scherrer Institute in Switzerland. SwissFEL is a very …

[HTML][HTML] Recent progress in high-temperature superconducting undulators

Z Chen, M Calvi, J Durrell, C Boffo, D Wei, K Zhang… - Superconductivity, 2024‏ - Elsevier
Considerable effort has been devoted to the development of superconducting undulators
(SCUs) intended for particle accelerator-based light sources, including synchrotrons and …

An X-ray free-electron laser with a highly configurable undulator and integrated chicanes for tailored pulse properties

E Prat, A Al Haddad, C Arrell, S Augustin, M Boll… - Nature …, 2023‏ - nature.com
X-ray free-electron lasers (FELs) are state-of-the-art scientific tools capable to study matter
on the scale of atomic processes. Since the initial operation of X-ray FELs more than a …

Undulator design for a laser-plasma-based free-electron-laser

A Ghaith, ME Couprie, D Oumbarek-Espinos… - Physics reports, 2021‏ - Elsevier
The fourth generation of synchrotron radiation sources, commonly referred to as the Free
Electron Laser (FEL), provides an intense source of brilliant X-ray beams enabling the …

[HTML][HTML] The SwissFEL soft X-ray free-electron laser beamline: Athos

R Abela, A Alarcon, J Alex, C Arrell, V Arsov… - Synchrotron …, 2019‏ - journals.iucr.org
The SwissFEL soft X-ray free-electron laser (FEL) beamline Athos will be ready for user
operation in 2021. Its design includes a novel layout of alternating magnetic chicanes and …

Experimental demonstration of mode-coupled and high-brightness self-amplified spontaneous emission in an x-ray free-electron laser

E Prat, W Hu, C Arrell, M Calvi, P Dijkstal, R Follath… - Physical Review Letters, 2024‏ - APS
X-ray free-electron lasers (FELs) are modern research tools with applications in multiple
scientific fields. Standard x-ray FEL pulses are produced by the self-amplified spontaneous …

Millijoule femtosecond x-ray pulses from an efficient fresh-slice multistage free-electron laser

G Wang, P Dijkstal, S Reiche, K Schnorr, E Prat - Physical Review Letters, 2024‏ - APS
We present the generation of x-ray pulses with average pulse energies up to one millijoule
and rms pulse durations down to the femtosecond level. We have produced these intense …

Widely tunable two-color x-ray free-electron laser pulses

E Prat, P Dijkstal, E Ferrari, R Ganter, P Juranić… - Physical Review …, 2022‏ - APS
We demonstrate the generation of widely tunable two-color x-ray free-electron laser (FEL)
pulses at SwissFEL. In a split-undulator configuration, each color is produced in a different …

Enhanced X-ray free-electron laser performance with optical klystron and helical undulators

C Kittel, M Calvi, S Reiche, N Sammut… - Synchrotron …, 2024‏ - journals.iucr.org
This article presents a demonstration of the improved performance of an X-ray free-electron
laser (FEL) using the optical klystron mechanism and helical undulator configuration, in …

Experimental characterization of the optical klystron effect to measure the intrinsic energy spread of high-brightness electron beams

E Prat, C Kittel, M Calvi, P Craievich, P Dijkstal… - … Review Accelerators and …, 2024‏ - APS
The intrinsic energy spread of electron beams needs to be measured to characterize and
optimize high-brightness electron beam sources such as those driving x-ray free-electron …