9 papers
Generation of high-fluence and high-intensity hard x-ray attosecond pulses at European XFEL
Ichiro Inoue, Ulrike Boesenberg, Rustam Rysov +41
By combining hard x-ray attosecond pulses from the European XFEL with total-reflection focusing x-ray optics, we generated nanofocused hard x-ray attosecond pulses with intensities…
High-power attosecond X-ray free-electron lasers: physics and design strategy
Chenzhi Xu, Jiawei Yan, Ye Chen +5
Attosecond pulses from X-ray free-electron laser (XFEL) have opened new opportunities for probing ultrafast electronic dynamics on the Angstrom--attosecond spatiotemporal scale. Mo…
U-Net-based surrogate modeling for attosecond X-ray free-electron lasers
Yufei Wei, Bingyang Yan, Chenzhi Xu +2
Attosecond X-ray pulse generation in modern X-ray free-electron lasers relies on strongly compressed, precisely tailored electron bunches, making accurate diagnostics and control o…
Spatiotemporal shaping of attosecond X-rays with time-dependent orbital angular momentum
Chenzhi Xu, Jiawei Yan, Gianluca Geloni +2
Attosecond X-ray pulses are indispensable for exploring ultrafast phenomena in matter on Angstrom and attosecond scales. Here we propose a new method to realize spatiotemporal shap…
Generation of high-power attosecond x-ray FEL pulses carrying orbital angular momentum
Chenzhi Xu, Jiawei Yan, Gianluca Geloni +2
X-ray beams carrying orbital angular momentum (OAM), are emerging as a powerful tool to probe matter. Recently, a method called self-seeded FEL with OAM (SSOAM) has been proposed t…
AttoSHINE: Generation of continuous-wave terawatt-scale attosecond X-ray pulses at SHINE
Bingyang Yan, Chenzhi Xu, Si Chen +4
Attosecond X-ray pulses are a critical tool for tracking ultrafast electron dynamics in condensed matter, molecular systems, and strongly correlated materials. Recent breakthroughs…
Multi-beam-energy control unit based on triple bend achromats
Liuyang Wu, Zihan Zhu, Bingyang Yan +2
X-ray free electron lasers (XFELs) are the new generation of particle accelerator-based light sources, capable of producing tunable, high-power X-ray pulses that are increasingly v…
Flexible multi-bunch-length operation for continuous-wave x-ray free-electron lasers
Zihan Zhu, Jiawei Yan, Hanxiang Yang +4
The X-ray free-electron lasers (XFELs) are cutting-edge instruments pivotal in a broad range of fields, providing high-power X-ray pulses with durations spanning from femtoseconds…
Opportunities for Gas-Phase Science at Short-Wavelength Free-Electron Lasers with Undulator-Based Polarization Control
Markus Ilchen, Enrico Allaria, Primož Rebernik Ribič +44
Free-electron lasers (FELs) are the world's most brilliant light sources with rapidly evolving technological capabilities in terms of ultrabright and ultrashort pulses over a large…