High Power Laser and Particle Beams, Volume. 34, Issue 10, 104005(2022)
Parameters optimization considering intra-beam scattering in HALF lattice design
Figures & Tables(11)
Fig. 1. Magnet layout and linear optical functions of one period 7BA lattice
Fig. 2. Change of emittance and emittance growth rate with natural emittance
Fig. 5. Magnet layout and linear optical functions of one period 6BAlattice
Fig. 6. Change of energy spread and horizontal emittance with beam current
Table 1. Main parameters of the 7BA storage ring
View tableView in ArticleTable 1. Main parameters of the 7BA storage ring
parameter value beam energy 2.4 GeV circumference 672 m natural emittance 24.7 pm·rad tune (H, V) 71.30, 23.30 natural chromaticity (H, V) −97, −110 momentum compaction factor 5×10−5 natural energy spread 7.97×10−4 natural damping time (H, V, L) (37.7,58.8,40.8) ms energy loss per turn 182.9 keV RF frequency 500 MHz
Table 2. Equilibrium emittance of the storage ring under IBS effects
View tableView in ArticleTable 2. Equilibrium emittance of the storage ring under IBS effects
$ \kappa /\mathrm{{\text{%}}} $ $ {\varepsilon }_{0} $ $ \mathrm{\varepsilon } $ $ {\sigma }_{\mathrm{p}0}/{10}^{-4} $ $ {\sigma }_{\mathrm{p}}/{10}^{-4} $ $ {\varepsilon }_{{x}0} $ $ {\varepsilon }_{{x}} $ $ ({\varepsilon }_{{x}}-{\varepsilon }_{{x}0})/{\varepsilon }_{{x}0} $ 10 24.7 98.4 7.97 11.5 23.2 92.5 2.99 100 24.7 77.7 7.97 10.5 15.0 47.3 2.15
Table 3. Main parameters of the 6BA storage ring
View tableView in ArticleTable 3. Main parameters of the 6BA storage ring
parameter value beam energy 2.2 GeV circumference 480 m natural emittance 85.1 pm·rad tune (H, V) 48.175,17.175 natural chromaticity (H, V) −75, −59 momentum compaction factor 6.3×10−5 natural energy spread 6.6×10−4 damping time (H, V, L) (22, 32.4, 21.2) ms energy loss per turn 217.5 keV RF frequency 500 MHz
Table 4. Equilibrium emittance of the HALF storage ring under IBS effects
View tableView in ArticleTable 4. Equilibrium emittance of the HALF storage ring under IBS effects
$ \kappa /\mathrm{{\text{%}}} $ $ {\varepsilon }_{0} $ $ \mathrm{\varepsilon } $ $ {\sigma }_{\mathrm{p}0}/{10}^{-4} $ $ {\sigma }_{\mathrm{p}}/{10}^{-4} $ $ {\varepsilon }_{x0} $ $ {\varepsilon }_{x} $ $ ({\varepsilon }_{x}-{\varepsilon }_{x0})/{\varepsilon }_{x0} $ 10 85.1 185.4 6.6 9.19 79.6 173.4 1.178 100 85.1 153.4 6.6 8.35 50.2 90.5 0.803
Table 5. Equilibrium emittance of the HALF storage ring under IBS effects
View tableView in ArticleTable 5. Equilibrium emittance of the HALF storage ring under IBS effects
$ \kappa /\mathrm{{\text{%}}} $ $ {\varepsilon }_{0} $ $ \mathrm{\varepsilon } $ $ {\sigma }_{\mathrm{p}0}/{10}^{-4} $ $ {\sigma }_{\mathrm{p}}/{10}^{-4} $ $ {\varepsilon }_{x0} $ $ {\varepsilon }_{x} $ $ ({\varepsilon }_{x}-{\varepsilon }_{x0})/{\varepsilon }_{x0} $ 10 84.2 129 6.94 7.98 78.5 120.3 0.53 100 84.2 110.5 6.94 7.56 48.6 63.8 0.31
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Chuwen Luo, Gangwen Liu, Weiwei Li, Nan Hu, Weimin Li, Zhenghe Bai, Lin Wang. Parameters optimization considering intra-beam scattering in HALF lattice design[J]. High Power Laser and Particle Beams, 2022, 34(10): 104005
Paper Information
Category: Advanced Synchrotron Radiation Physics and Technology
Received: May. 5, 2022
Accepted: --
Published Online: Sep. 9, 2022
The Author Email: Wang Lin (wanglin@ustc.edu.cn)
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