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Title |
Page |
| MOPAB112 |
A Modified Hybrid 6BA Lattice for the HALF Storage Ring |
407 |
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- Z.H. Bai, G.Y. Feng, T.L. He, W. Li, W.W. Li, G. Liu, Z.L. Ren, L. Wang, P.H. Yang, S.C. Zhang, T. Zhang
USTC/NSRL, Hefei, Anhui, People’s Republic of China
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In this paper, we propose a modified hybrid 6BA lattice as the baseline lattice of the Hefei Advanced Light Facility (HALF) storage ring. Similar to the Diamond-II lattice, the proposed lattice cell has one long straight section and one mid-straight section; but the two bend units adjacent to the mid-straight are LGB/RB units (LGB: longitudinal gradient bend, RB: reverse bend), which can give both lower emittance and shorter damping times. The designed HALF storage ring, with an energy of 2.2 GeV and 20 lattice cells, has a natural emittance of about 85 pm·rad.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB112
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| About • |
paper received ※ 15 May 2021 paper accepted ※ 20 May 2021 issue date ※ 01 September 2021 |
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| MOPAB113 |
A Low-emittance Booster Lattice Design for the SOLEIL Upgrade |
410 |
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- M.-A. Tordeux, A. Loulergue, R. Nagaoka
SOLEIL, Gif-sur-Yvette, France
- Z.H. Bai, G. Liu, T. Zhang
USTC/NSRL, Hefei, Anhui, People’s Republic of China
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The SOLEIL storage ring upgrade will require an injected beam with small transverse and longitudinal sizes. To meet this requirement, the present booster also needs to be upgraded, aiming to reduce the emittance below 10 nm·rad. A multi-bend achromat lattice is designed in this context for the booster upgrade, which consists of two superperiods to respect the present race-track configuration. The lattice is a 16BA HOA (Higher-Order Achromat) type lattice, composed of 14 unit cells, 2 matching cells and a long straight section, and combined-function bending magnets are used in the unit cells to both save space and reduce the emittance. The natural emittance of the designed booster is 5.2 nm·rad at the final energy of 2.75 GeV. This paper presents the general constraints, linear lattice design and nonlinear dynamics optimization for the booster upgrade.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB113
|
|
| About • |
paper received ※ 19 May 2021 paper accepted ※ 28 May 2021 issue date ※ 26 August 2021 |
|
| Export • |
reference for this paper using
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※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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