用于能量回收型直线加速器中逆康普顿散射产生X射线的515 nm工作波长抗热负载光学增强腔设计
Design of a thermal loading resilient optical enhancement cavity for operation at 515 nm for X-ray production through inverse Compton scattering in an energy recovery linac
AI总结：
该研究提出一种高功率光学增强腔优化方法，设计出用于PERLE ERL逆康普顿散射产X射线的515 nm抗热负载光学腔，可实现远超现有康普顿X射线源的光子率，且适配红外应用场景。
AI中文摘要：
本文提出了一种快速简便的高功率光学增强腔优化方法，该方法将应用于PERLE ERL（能量回收型直线加速器）中工作在515 nm的四镜蝴蝶结腔，用于通过逆康普顿散射产生X射线。优化的品质因数为预期的X射线光子率，对热负载进行了仔细评估，也为红外波段的极高平均功率运行提供了可行路径。研究表明，在几毫弧度的孔径内，平均能量超过280 keV、每秒超过10^11个光子的速率是可以实现的；为便于与现有提供高光子率的紧凑型X射线源对比，还对该设计在红外激光脉冲系统中的性能进行了评估，结果显示采用该设计可实现每秒超过10^13个光子的源，这是现有康普顿X射线源前所未有的性能，所采用的设计流程可轻松应用于高功率高精细度光学腔的其他应用场景。
英文摘要：
A fast and simple method to optimize a high-power optical enhancement cavity is proposed. It is applied to a four-mirror bow-tie cavity operating at 515 nm, which is to be implemented within the PERLE ERL for the production of X-rays through inverse Compton scattering. The optimized figure of merit is the expected X-ray photon rate. Thermal loading is carefully evaluated, giving also a path towards very high average power operation in infrared. One shows that photon rates exceeding 10^11 per second at average energies above 280 keV in apertures of a few miliradians are within reach. For easier comparison with existing Compact X-ray sources providing high rates of photons, the performance of the proposed design is also evaluated for a system delivering infrared laser pulses. It is shown that a source delivering more than 10^13 photons per second is achievable with this design, an unprecedented performance for existing Compton X-ray sources. The design procedure employed here can be easily applied to other applications of high-power high-finesse optical cavities.
