-
Abstract:
A storage ring-based light source, Beijing Advanced Photon Source (BAPS), is proposed to store a 5 GeV low-emittance electron beam and to provide high-brilliance coherent radiation. In this paper, we report our efforts of pushing down the emittance of BAPS to approach the so-called ultimate storage ring, while fixing the circumference to about 1200 m. To help deal with the challenge of beam dynamics associated with the intrinsic, very strong nonlinearities in an ultralow-emittance ring, a combination of several progressive technologies is used in the linear optics design and nonlinear optimization, such as a modified theoretical minimum emittance cell with small-aperture magnets, quasi-3rd-order achromat, theoretical analyzer based on Lie Algebra and Hamiltonian analysis, multi-objective genetic algorithm and frequency map analysis. These technologies enable us to obtain satisfactory beam dynamics in one lattice design with natural emittance of 75 pm.
-
-
-
[1] |
Zuting Luo
, Meirong Tang
, Zhaoyi Xu
. Testing Einstein Maxwell Power-Yang-Mills Hair via Black Hole Photon Rings. Chinese Physics C,
2026, 50(1): 1-18. |
[2] |
Yuan-Xing Gao
. Higher-order inner photon rings of a horizonless ultracompact object with an antiphoton sphere and their interferometric pattern. Chinese Physics C,
2025, 49(10): 105102.
doi: 10.1088/1674-1137/addc52
|
[3] |
Wen-Wen Ge
, You-Jin Yuan
, Jian-Cheng Yang
, S. Litvinov
, Geng Wang
, Rui-Jiu Chen
, Xin-Liang Yan
, Hang Ren
, Guo-Dong Shen
. Design optimization of isochronous mode in the HIAF-SRing. Chinese Physics C,
2025, 49(12): 124001.
doi: 10.1088/1674-1137/adcf0e
|
[4] |
Zhuoyi Pang
, Jian-Hui Zhang
, Dian-Jun Zhao
. Moments from momentum derivatives in lattice QCD. Chinese Physics C,
2025, 49(10): 101001.
doi: 10.1088/1674-1137/aded04
|
[5] |
XU Ji-Lei
, GUAN Meng-Yun
, YANG Chang-Gen
, WANG Yi-Fang
, ZHANG Jia-Wen
, LU Chang-Guo
, Kirk McDonald
, Robert Hackenburg
, Kwong Lau
, Logan Lebanowski
, Cullen Newsom
, Lin Shih-Kai
, Jonathan Link
, MA Lie-Hua
, Viktor Pec
, Vit Vorobel
, CHEN Jin
, LIU Jin-Chang
, ZHOU Yong-Zhao
, LIANG Hao
. Design and preliminary test results of Daya Bay RPC modules. Chinese Physics C,
2011, 35(9): 844-850.
doi: 10.1088/1674-1137/35/9/011
|
[6] |
PENG Quan-Ling
, SUN Jian
, ZHAO Guang-Yuan
, SHI Cai-Tu
. Principle and Software Design of Helmhotz Coil Measurement System. Chinese Physics C,
2001, 25(9): 920-925. |
[7] |
Xu Jianming
. Matching Problem of Lattice with Transverse Coupling. Chinese Physics C,
1995, 19(1): 73-81. |
-
Access
-
-