Supported by National Natural Science Foundation of China(21327901,11205156)
FELiChEM is an infrared free electron laser(FEL) facility currently under construction, which consists of two oscillators generating middle-infrared and far-infrared laser covering the spectral range of 2.5–200 μm...
Supported by Major State Basic Research Development Program(2011CB808301);National Natural Science Foundation of China(11205156)
We put forward a method to optimize the single-step tapering amplitude of undulator strength and initial energy tuning of electron beam to maximize the saturation power of high gain free-electron lasers (FELs), base...
National Natural Science Foundation of China (91026001)
The taper-shaped superconducting quarter wave resonators with frequency of 80.5 MHz, β of 0.041 and 0.085 have been pre-researched. The radio frequency (RF) design of the cavities has been completed, and the struct...
Supported by Major State Basic Research Development Program (2008CB817706)
A digital low level radio frequency (LLRF) control system based on a high precision fieldprogrammable gate array (FPGA) is being developed for the stable operation of the upgraded direct currentsuperconductive (D...
Supported by Shanghai Natural Science Foundation (09JC1416900)
Laser-beam interaction in an undulator is commonly suggested in the development of free electron laser (FEL) schemes. In this paper, a three-dimensional algorithm is developed to assist in laser-beam interaction sim...
The superconducting spoke cavity has been proposed to accelerate the proton in the low energy section of the high power proton linac for the Accelerator Driven Sub-critical System in China. In this paper, the basic ge...
Supported by Major State Basic Research Development Program of China(2002CB713600)
A 3+1/2cell DC-SC photo-injector for PKU-FEL facility is under development, which is an upgrade design of the successful 1-4-1/2cell DC-SC photo-injector. The Lorentz detuning and tuning structure for the 3+1/2cell ...