BFEL实现红外和X射线双波段运行的初步设计
Design consideration of BFEL to realize infrared and soft X-ray double waveband operation
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摘要: 讨论了北京自由电子激光装置升级后实现红外和X射线双波段运行的主要物理和技术问题及其解决途径，并进行了初步设计。结果表明：红外自由电子激光器的波长调谐范围为4.9~16.8 μm，输出宏脉冲能量可达到50 mJ;背散射X射线光源可以覆盖0.45~3.49 keV能区，输出宏脉冲谱亮度为3.0×1020 photons/(s·mm2·mrad2·0.1%BW)，扩大了红外自由电子激光的应用范围，以及用户对相应能区X射线的应用需求。Abstract: Based on the BFEL improvement goals, this paper discusses the main physical and technical problems of dual-band operation of BFEL facility in IR and X-ray ranges by Compton scattering. The preliminary design shows that the wavelength can change from 4.9 to 16.8 μm. with macropulse energy of 50mJ. In addition, the photon energy of back-scattering X-ray source by intra-cavity Compton back-scattering can be 0.475~ 3.49 keV, the macropulse spectral brightness can reach 3.0×1020 photons/(s·mm2·mrad2·0.1%BW), thus broaden the application areas of the BFEL facility into X-ray range.
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Key words:
- compton scattering /
- dual-band /
- ir-fel /
- soft x-ray
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