Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring

Peng-Hui Yang

doi:10.1007/s41365-023-01252-w

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Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring

SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS | Updated：2023-08-16

- Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring
- Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring
- 核技术（英文版） 2023年34卷第7期文章编号：107
- Affiliations：
  
  1.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
- Author bio：
  
  † htlong@ustc.edu.cn
  ‡ baizhe@ustc.edu.cn
- Funds：
  
  Fundamental Research Funds for the Central Universities(WK2310000107);National Key Research and Development Program of China(2016YFA0402000);National Natural Science Foundation of China(12205299;11875259;12105284)
- DOI：10.1007/s41365-023-01252-w
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Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring[J]. 核技术（英文版）, 2023, 34(7):107

Peng-Hui Yang, Gang-Wen Liu, Jian-Hao Xu, et al. Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring[J]. Nuclear Science and Techniques, 2023, 34(7):107
Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring[J]. 核技术（英文版）, 2023, 34(7):107 DOI： 10.1007/s41365-023-01252-w.

Peng-Hui Yang, Gang-Wen Liu, Jian-Hao Xu, et al. Design and comparison of hybrid multi-bend achromat lattices for HALF storage ring[J]. Nuclear Science and Techniques, 2023, 34(7):107 DOI： 10.1007/s41365-023-01252-w.

摘要

Abstract

The Hefei Advanced Light Facility (HALF) proposed by the National Synchrotron Radiation Laboratory is a green-field vacuum ultraviolet and soft X-ray diffraction-limited storage ring light source with a beam energy of 2.2 GeV and emittance goal of less than 100 pm,⋅,rad. Inspired by the ESRF-EBS hybrid multi-bend achromat (HMBA), SLS-2, and Diamond-II lattices, we propose and design a modified H6BA lattice as the baseline lattice of the HALF storage ring with 20 identical cells and a natural emittance of approximately 86 pm,⋅,rad. In this study, three other types of HMBA lattices comprising two H7BA lattices and a H6BA lattice are designed for HALF with the same number of cells. The main storage ring properties of these four HMBA lattices are compared. Because the intra-beam scattering (IBS) effect is significant in the HALF storage ring, we calculate and compare the equilibrium emittances of the four lattices with IBS included. These comparisons show that the present modified H6BA lattice, which has a relatively low equilibrium emittance and more straight sections, is preferred for the HALF storage ring after a comprehensive consideration.

关键词

Keywords

Hefei Advanced Light FacilityLattice designHybrid MBA latticeIntra-beam scattering

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