The results show that signal in FEL amplifier with a coaxial hybrid wiggler can get an efficient amplification even at a low voltage of 205 kV. The efficiency of the amplifier is upto 27.5% and the saturation power arrives to a MW level.

• 粒子模拟结果表明；这种同轴摇摆器结构FEL在工作电压较低(205 kV)的情况下仍可以得到较好的放大输出；效率达到27.；3%25；饱和功率达到兆瓦级;