The HEPS project

Yi Jiao(Chinese Academy of Sciences), Gang Xu(Chinese Academy of Sciences), Xiaohao Cui(Chinese Academy of Sciences), Z. H. Duan(Chinese Academy of Sciences), Yuanyuan Guo(Chinese Academy of Sciences), Ping He(Chinese Academy of Sciences), Da-Heng Ji(Chinese Academy of Sciences), Jing-Yi Li(Chinese Academy of Sciences), Xiaoyu Li(Chinese Academy of Sciences), Cai Meng(Chinese Academy of Sciences), Yuemei Peng(Chinese Academy of Sciences), Saike Tian(Chinese Academy of Sciences), Jiuqing Wang(Chinese Academy of Sciences), Na Wang(Chinese Academy of Sciences), Yuan-Yuan Wei(Chinese Academy of Sciences), Haisheng Xu(Chinese Academy of Sciences), Fang Yan(Chinese Academy of Sciences), Chenghui Yu(Chinese Academy of Sciences), Yaliang Zhao(Chinese Academy of Sciences), Qing Qin(Chinese Academy of Sciences)
Journal of Synchrotron Radiation
September 26, 2018
10.1107/s1600577518012110
Cited by 237Open Access
Full Text

Abstract

The High Energy Photon Source (HEPS), a 6 GeV green-field diffraction-limited storage ring light source, will be built in Beijing, China. The HEPS design has been evolving for about ten years, and is now mostly finished and ready for construction. The storage ring is based on a modified hybrid seven-bend achromat (7BA) design, where bending magnets with reverse bending angles and longitudinal gradients are adopted to reach an ultralow natural emittance of 34.2 pm with a circumference of 1360.4 m. The central slice of the dipole in the middle of the modified hybrid 7BA, with flexible magnetic field, is used as the source of the bending-magnet beamline. Moreover, alternating high- and low-beta sections are specially designed to generate and deliver X-ray synchrotron radiation with high brightness of 5 × 10 22 photons s −1 mm −2 mrad −2 (0.1% bandwidth) −1 . Here, the HEPS storage ring design and solutions to the challenges inherent in this ultralow-emittance design are presented.

Related Papers

No related papers found

Powered by citation graph analysis