自由电子激光振荡器中电子束能量跳跃对增益的影响
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摘要: 微脉冲中电子束能量、电流的跳跃会影响电子束的质量, 从而也影响激光的增益。在CAEP FIR FEL 理论设计模型参数的基础上，利用一维定态程序对电子束能量跳跃对增益的影响进行了数值研究，并与非定态程序计算结果进行比较，给出可容许的能量跳跃范围。Abstract: The FEL oscillators with highp ower, highefficiency require stable electron beam as a pump. That means e nergy, current and period of ebeam should stabilize pass by pass during a mac ropulse. Actually,it is impossible to keep an absolute stabilization of electron beam during a micropulse. The jitter of ebeam will affect gain of laser seri ously. The effects of energy jitter of ebeam on the gain are studied using the FEL 1D code (W1D) developed by us based on the parameters of the CAEP FIR-FEL. The results show that the energy jitter should be less t han 0.5% for CAEP FIR-FEL.
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Key words:
- fel oscillator /
- energy jitter /
- gain of laser /
- power of laser
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