用遗传算法改善HEPS基线设计的非线性性能
Improving the nonlinear performance of the HEPS baseline design with genetic algorithm
摘要：
提出了高能光子源的基线设计方案，其发射度为60 μ m·rad，周长为1.3公里。然而，该设计的非线性性能需要进一步改进，以扩大动态孔径和动量接收。在这项研究中，遗传优化的线性光学进行，以便找到所有可能的解决方案，较弱的六极，因此较弱的非线性，同时保持发射度在同一水平的基线设计。这些得到的解决方案，使我们能够探索非线性动力学的工作点的依赖关系。结果表明，在相同的布局下，通过精确调节磁场强度和合理选择工作点，可以获得更好的非线性性能。
英文摘要：
The baseline design for the High Energy Photon Source has been proposed, with an emittance of 60 pm.rad within a circumference of 1.3 kilometers. Nevertheless, the nonlinear performance of the design needs further improvements to enlarge both the dynamic aperture and the momentum acceptance. In this study, genetic optimization of the linear optics is performed, so as to find all the possible solutions with weaker sextupoles and hence weaker nonlinearities, while keeping the emittance at the same level as the baseline design. These obtained solutions enable us to explore the dependence of nonlinear dynamics on the working point. The result indicates that with the same layout, it is feasible to obtain much better nonlinear performance with a delicate tuning of the magnetic field strengths and a wise choice of the working point.
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。
