论文标题
连续波X射线自由电子激光器的能量回收操作
Energy recovery operation for continuous-wave X-ray free-electron lasers
论文作者
论文摘要
在连续波模式下运行的超导线性加速器可以在Megahertz重复速率下产生X射线游离电子激光器（XFEL），其能力是将宽光谱范围相干辐射传递到多端站。在此字母中，提出了能量回收的LINAC（ERL）模式，以灵活控制连续波超导的LINAC的电子束能量。理论研究和多维数值模拟应用于上海高重复率XFEL和Extreme Light设施的Linac案例。结果表明，在最近25个低温模型中的ERL操作中，对RF电源系统的严格要求可能会大大放松。如果一个人耗尽了RF功率，则可以在ERL模式下从8.74 GEV增强到11.41GEV。提出了ERL操作，多能电子束传输和XFEL性能改进的优化。
A superconducting linear accelerator operating in continuous-wave mode could produce X-ray free electron lasers (XFEL) at megahertz repetition rate, with the capability that delivering wide spectral range coherent radiation to multi end stations. In this Letter, the energy recovery Linac (ERL) mode is proposed to flexibly control the electron beam energy for a continuous-wave superconducting Linac. Theoretical investigations and multi-dimensional numerical simulations are applied to the Linac case of Shanghai high-repetition-rate XFEL and extreme light facility. The results show that, with ERL operation in the last 25 cryo-modules, the strict requirements on RF power system could be significantly relaxed. And if one exhaust the RF power, the maximum electron beam energy can be enhanced from 8.74 GeV to 11.41GeV in ERL mode. The optimization of the ERL operation, the multi-energy electron beam transport and the XFEL performance improvements are presented.
