自注入自由电子激光波长可调谐全相干VUV光源的物理设计
Physical design of a wavelength tunable fully coherent VUV source using self-seeding free electron laser
摘要：
为了满足同步辐射用户的需求，初步设计了一台全相干真空紫外自由电子激光（FEL）。这种设计的一个重要目标是辐射波长可以在宽范围（70-170 nm）内容易地调谐。根据用户的需求和我们的实际情况，本方案采用了自播方案。首先，我们尝试通过固定电子能量，仅改变波荡器间隙来改变辐射波长，但分析表明，由于不同波长下的功率增益长度和自由电子激光效率差异很大，这是很困难的。因此，考虑将波长范围分成三个子区域。在每个子区域中，使用恒定的电子能量，并且仅通过调节波荡器间隙来实现波长调谐。仿真结果表明，该方案具有较好的性能。
英文摘要：
In order to meet requirements of the synchrotron radiation users, a fully coherent VUV free electron laser (FEL) has been preliminarily designed. One important goal of this design is that the radiation wavelength can be easily tuned in a broad range (70-170 nm). In the light of the users' demand and our actual conditions, the self-seeding scheme is adopted for this proposal. Firstly, we attempt fixing the electron energy and only changing the undulator gap to varying the radiation wavelength, but the analysis implies that it is difficult because of the great difference of the power gain length and FEL efficiency at different wavelength. Therefore, dividing the wavelength range into three subareas is considered. In each subarea, a constant electron energy is used and the wavelength tuning is realized only by adjusting the undulator gap. The simulation results shows that this scheme has an acceptable performance.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
