Compact far-IR FEL design
Compact far-IR FEL design
复制标题
紧凑型远红外 FEL 设计
DOI：
10.1016/0168-9002(92)91155-3
复制
发表时间：
1992
影响因子：
1.4
通讯作者：
J. Feinstein
中科院分区：
文献类型：
--
作者：
Yen;J. Schmerge;J. Harris;G. Gallerano;R. Pantell;J. Feinstein
一种小型远红外自由电子激光器（FIR FEL）目前正在斯坦福大学建造。微波枪产生1 - 3.3 MeV的电子，这些电子通过上游反射镜上的空穴送入长50cm、周期1cm的摆动器中，产生波长为100 ~ 1000 μm的辐射。利用超导螺线管和一组可渗透材料，产生一个平均重量9.6 kG、间隙为2.0 mm的摆动场。电子束由10 ps的微脉冲组成，峰值电流为10 A，能量扩散为1%，90%的粒子的非归一化发射率为2π mm mrad。利用上述参数计算出10db的小信号增益。概述了设计细节，并讨论了我们的摆动器的独特性。
A compact size far-infrared free-electron laser (FIR FEL) is currently being built at Stanford. A microwave gun products 1–3.3 MeV electrons, which are sent into a 50 cm long wiggler of 1 cm period through a hole on the upstream mirror to generate radiation at a wavelength of 100 to 1000 μm. A superconducting solenoid along with an array of permeable material is used to generate a 9.6 kG rms wiggler field with a 2.0 mm gap. The electron beam consists of 10 ps micropulses with 10 A peak current, 1% energy spread and unnormalized emittance for 90% of the particles of 2π mm mrad. A 10 dB small signal gain has been calculated with the parameters mentioned above. An overview of the design details as well as a discussion on the uniqueness of our wiggler are presented.