55 citations · 208 across the 22 of their papers we have counts for
20 papers · 1 filter
First observation of laser-beam interaction in a dipole magnet
Jiawei Yan, Nanshun Huang, Haixiao Deng +3
As a new-generation light source, free-electron lasers (FELs) provide high-brightness X-ray pulses at the angstrom-femtosecond space and time scales. The fundamental physics behind…
Self-Amplification of Coherent Energy Modulation in Seeded Free-Electron Lasers
Jiawei Yan, Zhangfeng Gao, Zheng Qi +23
The spectroscopic techniques for time-resolved fine analysis of matter require coherent X-ray radiation with femtosecond duration and high average brightness. Seeded free-electron…
Energy recovery operation for continuous-wave X-ray free-electron lasers
Guanglei Wang, Jiawei Yan, Nanshun Huang +7
A superconducting linear accelerator operating in continuous-wave mode could produce X-ray free electron lasers (XFEL) at megahertz repetition rate, with the capability that delive…
Extending the photon energy coverage of an x-ray self-seeding FEL via the reverse taper enhanced harmonic generation technique
Kaiqing Zhang, Zheng Qi, Chao Feng +3
In this paper, a simple method is proposed to extend the photon energy range of a soft x-ray self-seeding free-electron laser (FEL). A normal monochromator is first applied to puri…
Wakefields studies for the SXFEL user facility
Minghao Song, Chao Feng, Dazhang Huang +3
Besides the original seeded undulator line, in the Soft X-ray free-electron laser (SXFEL) user facility at Shanghai, a second undulator line based on self-amplified spontaneous emi…
Deflecting cavity dynamics for time-resolved machine studies of SXFEL user facility
Minghao Song, Haixiao Deng, Bo Liu +1
Radio frequency deflectors are widely used for time-resolved electron beam energy, emittance and radiation profile measurements in modern free electron laser facilities. In this pa…
Generating coherent soft x-ray pulses in the water window with a high-brightness seeded free-electron laser
Kaishang Zhou, Chao Feng, Haixiao Deng +1
We propose a new scheme to generate high-brightness and temporal coherent soft x-ray radiation in a seeded free-electron laser. The proposed scheme is based the coherent harmonic g…
Wakefield issue and its impact on X-ray photon pulse in the SXFEL test facility
Minghao Song, Kai Li, Chao Feng +3
Besides the designed beam acceleration, the energy of electrons changed by the longitudinal wakefields in a real free-electron laser (FEL) facility, which may degrade FEL performan…
Demonstration of nonlinear-energy-spread compensation in relativistic electron bunches with corrugated structures
Feichao Fu, Rui Wang, Pengfei Zhu +18
High quality electron beams with flat distributions in both energy and current are critical for many accelerator-based scientific facilities such as free-electron lasers and MeV ul…
Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers
Guanglei Wang, Chao Feng, Haixiao Deng +6
The beam energy spread at the entrance of undulator system is of paramount importance for efficient density modulation in high-gain seeded free-electron lasers (FELs). In this pape…
Single-shot measurement of free-electron laser polarization at SDUV-FEL
Lie Feng, Haixiao Deng, Tong Zhang +10
In this paper, a division-of-amplitude photopolarimeter (DOAP) for measuring the polarization state of free-electron laser (FEL) pulse is described. The incident FEL beam is divide…
Fast Polarization Switching Demonstration Using Crossed-Planar Undulator in a Seeded Free Electron Laser
Haixiao Deng, Tong Zhang, Lie Feng +13
Fast polarization switching of light sources is required over a wide spectral range to investigate the symmetry of matter. In this Letter, we report the first experimental demonstr…
Proposal for High-harmonic EEHG Lasing at Shanghai Deep Ultra-Violet Free-electron Laser
Tong Zhang, Chao Feng, Haixiao Deng +2
The echo-enabled harmonic generation (EEHG) free-electron laser (FEL) has been already demonstrated at lower harmonics and the first lasing at third harmonic also has been achieved…
Slippage effect on laser phase error amplification in seeded harmonic generation free-electron lasers
Chao Feng, Haixiao Deng, Guanglei Wang +3
Free-electron lasers (FELs) seeded with external lasers hold great promise for generating high power radiation with nearly transform-limited bandwidth in soft x-ray region. However…
Compensating the electron beam energy spread by the natural transverse gradient of laser undulator in all-optical x-ray light sources
Tong Zhang, Chao Feng, Haixiao Deng +3
All-optical ideas provide a potential to dramatically cut off the size and cost of x-ray light sources to the university-laboratory scale, with the combination of the laser-plasma…
Simulation studies on laser pulse stability for Dalian Coherent Light Source
Haixiao Deng, Meng Zhang, Duan Gu +3
Dalian Coherent Light Source will use a 300MeV LINAC to produce fully coherent photon pulses in the wavelength range between 150-50nm by high gain harmonic generation free electron…
FEL Polarization Control Studies on Dalian Coherent Light Source
Tong Zhang, Hai-Xiao Deng, Wei-Qing Zhang +5
The polarization switch of a free-electron laser (FEL) is of great importance to the user scientific community. In this paper, we investigate the generation of controllable polariz…
Status of polarization control experiment at Shanghai deep ultraviolet free electron laser
Haixiao Deng, Tong Zhang, Lie Feng +15
A polarization control experiment by utilizing a pair of crossed undulators has been proposed for the Shanghai deep ultraviolet free electron laser test facility. Numerical simulat…
Polarization control proposal for Shanghai deep ultraviolet free electron laser
Tong Zhang, Haixiao Deng, Jianhui Chen +9
In this paper, a fully coherent radiation option with controllable polarization is proposed for Shanghai deep ultraviolet free electron laser (FEL) test facility. Intensive start-t…
Characterizing Temporal Structure of the Relativistic Electron Bunch
Haixiao Deng, Chao Feng, Bo Liu +3
Using proper beam energy chirp and the undulator detuning effect, we propose a modified optical replica synthesizer scheme to characterize the temporal structure of a relativistic…