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：
10.1088/1674-1137/40/2/027001
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发表时间：
2016
影响因子：
3.6
通讯作者：
Gang 刚 Xu 徐;Yi 毅 Jiao 焦;Y. Peng 彭
中科院分区：
文献类型：
--
作者：
Gang 刚 Xu 徐;Yi 毅 Jiao 焦;Y. Peng 彭
新一代的基于存储环的光源，称为衍射限制存储环（DLSRs），其发射度通过多弯曲消色差晶格接近多keV光子的衍射极限，引起了世界范围内的广泛研究。在各种DLSR的建议，混合多弯消色差的概念，在欧洲同步辐射装置（ESRF）预测的有效方法，最大限度地减少发射度，同时保持所需的色六极强度达到一个可实现的水平。针对北京计划建设的高能光子源，提出了由48个混合七弯消色差镜组成的ESRF型点阵设计，其发射度可低至60 pm·rad，周长约为1296 m。足够的动态孔径，允许垂直轴上注射，和适度的动量接受同时实现一个有前途的环性能。
A new generation of storage ring-based light sources, called diffraction-limited storage rings (DLSRs), with emittance approaching the diffraction limit for multi-keV photons by means of multi-bend achromat lattices, has attracted extensive studies worldwide. Among various DLSR proposals, the hybrid multi-bend achromat concept developed at the European Synchrotron Radiation Facility (ESRF) predicts an effective way of minimizing the emittance while keeping the required chromatic sextupole strengths to an achievable level. For the High Energy Photon Source planned to be built in Beijing, an ESRF-type lattice design consisting of 48 hybrid seven-bend achromats is proposed to reach emittance as low as 60 pm·rad with a circumference of about 1296 m. Sufficient dynamic aperture, allowing vertical on-axis injection, and moderate momentum acceptance are achieved simultaneously for a promising ring performance.