58 citations · 345 across the 27 of their papers we have counts for
27 papers
Demonstration of High-Gain Harmonic Lasing in a Terahertz Free-Electron Laser
Yin Kang, Cheng Yu, Yue Wang +26
Compact Free-Electron Lasers (FELs) offering broad, continuous spectral tunability are traditionally constrained by fixed-parameter magnetic structures and the necessity for high-e…
Self-referenced Spectral Interferometry for Single-shot Characterization of Ultrashort Free-electron Laser Pulses
Yaozong Xiao, Hao Sun, Bo Liu +2
Attosecond x-ray pulse with known spectro-temporal information is an essential tool for the investigation of ultrafast electron dynamics in quantum systems. Ultrafast free-electron…
A machine-learning based closed orbit feedback for the SSRF storage ring
Ruichun Li, Qinglei Zhang, Bocheng Jiang +4
In order to improve the stability of synchrotron radiation, we developed a new method of machine learning-based closed orbit feedback and piloted it in the storage ring of the Shan…
Design and Commissioning of A Beam Distribution System for Multiple Undulator Line Operation of the SXFEL-UF
Si Chen, Kaiqing Zhang, Tao Liu +4
As an important measure of improving the efficiency and usability of X-ray free electron laser facilities, simultaneous operation of multiple undulator lines realized by a beam dis…
Energy Recovery Linac Based Fully Coherent Light Source
Zhentang Zhao, Zhen Wang, Chao Feng +2
Energy recovery linac (ERL) holds great promise for generating high repetition-rate and high brightness electron beams. The application of ERL to drive a free-electron laser is cur…
High-repetition-rate seeded free-electron laser with direct-amplification of an external coherent laser
Xiaofan Wang, Chao Feng, Bart Faatz +2
Various scientific and industrial researches such as spectroscopy and advanced nano-technologies have been demanding high flux and fully coherent EUV and X-ray radiation. These dem…
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…
Obliquely Incident Laser and Electron Beam Interaction in an Undulator
Xiaofan Wang, Chao Feng, Cheng-Ying Tsai +2
The angular drift of a laser beam is of particular concern in applications such as seeded free-electron lasers. A systematical study of the obliquely incident laser and electron be…
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…
Using a Bessel light beam as an ultra-short period helical undulator
Bocheng Jiang, Qinglei Zhang, Zhentang Zhao
The undulator is a critical component to produce synchrotron radiation and free electron laser. When a Bessel light beam carrying the orbit angular momentum co-propagates with an e…
Chromatic Effect for THz Generation in a Novel Wave-front Tilt Scheme
Bin Li, Wenyan Zhang, Xiaoqing Liu +13
Deriving single or few cycle terahertz pulse (THz) by intense femtosecond laser through cascaded optical rectification in electro-optic crystals is a crucial technique in cutting-e…
Generating Isolated Terawatt-Attosecond X-ray Pulses via a Chirped Laser Enhanced High-Gain Free-electron Laser
Zhen Wang, Chao Feng, Zhentang Zhao
A feasible method is proposed to generate isolated attosecond terawatt x-ray radiation pulses in high-gain free-electron lasers. In the proposed scheme, a frequency chirped laser p…
Beam dynamics of the superconducting wiggler on the SSRF storage ring
Qinglei Zhang, Shunqiang Tian, Bocheng Jiang +2
In the SSRF Phase-II beamline project, a Superconducting Wiggler (SW) will be installed in the electron storage ring. It may greatly impact on the beam dynamics due to the very hig…
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…
Experimental demonstration of longitudinal beam phase space linearizer in a free-electron laser facility by corrugated structures
Haixiao Deng, Meng Zhang, Chao Feng +19
Removal of residual linear energy chirp and intrinsic nonlinear energy curvature in the relativistic electron beam from radiofrequency linear accelerator is of paramount importance…
X-Band deflecting cavity design for ultra-short bunch length measurement of SXFEL at SINAP
Jian-Hao Tan, Qiang Gu, Wen-Cheng Fang +2
For the development of the X-ray Free Electron Lasers test facility (SXFEL) at SINAP, ultra-short bunch is the crucial requirement for excellent lasing performance. It's a big chal…
Three-dimensional manipulation of electron beam phase space for seeding soft x-ray free-electron lasers
Chao Feng, Tong Zhang, Haixiao Deng +1
In this letter, a simple technique is proposed to induce strong density modulation into the electron beam with small energy modulation. By using the combination of a transversely d…
Phase-merging Enhanced Harmonic Generation Free-electron Laser
Chao Feng, Haixiao Deng, Dong Wang +1
Together with one of its variants, the recently proposed phase-merging enhanced harmonic generation (PEHG) free-electron lasers (FELs) have been systematically studied in this pape…
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…