15 papers
Transverse Confinement in Cascaded Inverse-Cherenkov Acceleration via Phase-Trajectory Control and Injection Matching
Yuanhao Liu, Nanshun Huang, Xionghao Yuan +3
Sub-relativistic electrons in micron-scale dielectric laser accelerators face coupled challenges of longitudinal dephasing and transverse defocusing, often imposing stringent requi…
Towards Cavity-Based X-ray Free-Electron Lasers: Milestones and Challenges
Kai Li, Patrick Rauer, Nanshun Huang +1
Cavity-based X-ray free-electron lasers (CBXFELs) could advance X-ray science by delivering fully coherent radiation with high spectral brightness and enhanced pulse control, addre…
Advanced Externally Seeded FEL Schemes for High-Repetition-Rate Operation at SHINE
Hanxiang Yang, Nanshun Huang, Zheng Qi +3
Externally seeded free-electron lasers (FELs) are promising approaches for generating fully coherent soft-X-ray radiation. Their extension to shorter wavelengths and MHz-level repe…
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…
High-power beyond extreme ultraviolet FEL radiation with flexible polarization at SHINE
Hanxiang Yang, Zhangfeng Gao, Bingyang Yan +3
Linac-based free-electron lasers (FELs) feature high brightness, narrow bandwidth, controllable polarization, and wide wavelength tunability. With the rapid development of supercon…
Theoretical and experimental studies of energy modulation to demodulation in seeded free-electron lasers
Hanxiang Yang, Nanshun Huang, Zipeng Liu +9
Laser manipulation plays a critical role in precisely tailoring relativistic electron beams through energy modulation, enabling the generation of coherent, intense, and ultrashort…
NeutrSHINE: a high repetition rate ultrafast neutron source driven by SHINE electron beam
Tianyu Ma, Yuchen Liu, Zhangfeng Gao +11
Neutrons serve as unique probes for exploring the microscopic structure of matter, with the performance of a neutron source fundamentally governing the depth of scientific explorat…
Spectral Control of a Cavity-Based X-ray Free-Electron Laser via Active Mode Locking
Nanshun Huang, Hanxiang Yang, Haixiao Deng
Precise spectral control in the hard X-ray regime remains a long-standing challenge that limits applications in atomic-scale science and ultrafast spectroscopy. We present an activ…
Multi-color XFEL pulses with variable color separation and time delay for multi-frame diffraction imaging
Xiaodan Liu, Hanxiang Yang, Bingyang Yan +8
X-ray free-electron lasers (XFELs) of high brightness have opened new opportunities for exploring ultrafast dynamical processes in matter, enabling imaging and movies of single mol…
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…
Cavity-based compact light source for extreme ultraviolet lithography
Changchao He, Hanxiang Yang, Nanshun Huang +2
A critical technology for high-volume manufacturing of nanoscale integrated circuits is a high-power extreme ultraviolet (EUV) light source. Over the past decades, laser-produced p…
Rapidly Switchable X-ray Angular Momentum from a Free Electron Laser Oscillator
Nanshun Huang, Haixiao Deng
X-ray vortices carrying tunable Orbital Angular Momentum (OAM) are an emerging tool for X-ray characterization technology. However, in contrast to the generation of vortex beams in…