ESRF-type lattice design and optimization for the High Energy Photon Source*
ESRF-type lattice design and optimization for the High Energy Photon Source*
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DOI：
10.1088/1674-1137/39/6/067004
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发表时间：
2014-11
影响因子：
3.6
通讯作者：
Y. Jiao;Gang Xu
中科院分区：
文献类型：
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作者：
Y. Jiao;Gang Xu
新一代基于存储环的光源，称为衍射限制存储环（DLSR），通过使用多弯消色差晶格，其发射度接近多kev光子的衍射极限，已经吸引了世界各地和许多实验室的广泛研究，并被认真考虑在不久的将来作为升级现有设施的手段。在各种DLSR提案中，PEPX设计表明，通过基于“三阶消色差”概念设计晶格并具有特殊的高β注入部分，可以在DLSR中实现足够的离轴注入环接受度。对于计划在北京建设的高能光子源（HEPS），设计并不断改进了pepx型晶格。在本文中，我们报告了HEPS的pepx型设计的发展，并讨论了与线性光学设计和非线性优化相关的主要问题。
A new generation of storage ring-based light sources, called diffraction-limited storage rings (DLSR), with emittance approaching the diffraction limit for multi-keV photons by using multi-bend achromat lattice, has attracted worldwide and extensive studies of several laboratories, and been seriously considered as a means of upgrading existing facilities in the imminent future. Among various DLSR proposals, the PEPX design demonstrated that it is feasible to achieve sufficient ring acceptance for off-axis injection in a DLSR, by designing the lattice based on the 'thirdorder achromat' concept and with a special high-beta injection section. For the High Energy Photon Source (HEPS) planned to be built in Beijing, a PEPX-type lattice has been designed and continuously improved. In this paper, we report the evolution of the PEPX-type design for HEPS, and discuss the main issues relevant to the linear optics design and nonlinear optimization.