29 citations · 52 across the 18 of their papers we have counts for
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An analysis on optimization of undulator in self-seeding free electron laser
Jia Qika
A simple analysis is given for optimum length of undulator in self-seeding free electron laser (FEL). The obtained relations show the correlation between the undulator length and t…
Development of A Modified Quasi-periodic Undulator for HLS
Yufeng Yang, Huihua Lu, Wan chen +3
A modified quasi periodic undulator (QPU) is developed and to be installed at Hefei Light Source (HLS).Magnet dimensions optimization is applied. High harmonics contamination is el…
Physical design of a wavelength tunable fully coherent VUV source using self-seeding free electron laser
Li He-Ting, Jia Qi-Ka
In order to meet requirements of the synchrotron radiation users, a fully coherent VUV free electron laser (FEL) has been preliminarily designed. One important goal of this design…
Velocity bunching in travelling wave accelerator with low acceleration gradient
Rui-Xuan Huang, Zhi-Gang He, Wei-Wei Li +1
We present the analytical and simulated results concerning the influences of the acceleration gradient in the velocity bunching process, which is a bunch compression scheme that us…
Compact narrow-band THz radiation source based on photocathode rf gun
Li Wei-Wei, He Zhi-Gang, Jia Qi-Ka
Narrow-band THz coherent Cherenkov radiation can be driven by a subpicosecond electron bunch traveling along the axis of a hollow cylindrical dielectric-lined waveguide. We present…
Generation and measurement of sub-picosecond electron bunch in photocathode rf gun
Weiwei Li, Zhiagng He, Qika Jia
We consider a scheme to generate sub-picosecond electron bunch in the photocathode rf gun by improving the acceleration gradient in the gun, suitably tuning the bunch charge, the l…
Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser
Ai-Lin Wu, Qi-Ka Jia, He-Ting Li
In this paper, the harmonics suppression effect of QPUs in SASE FEL is investigated. The numerical results show that the harmonics power is reduced by using QPUs, but the fundament…