A Modified Hybrid 6BA Lattice for the HALF Storage Ring
A Modified Hybrid 6BA Lattice for the HALF Storage Ring
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DOI：
10.18429/jacow-ipac2021-mopab112
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发表时间：
2021-08
期刊：
影响因子：
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通讯作者：
Z. Bai;G. Feng;Tianlong He;Weimin Li;Weiwei Li;Gangwen Liu;Z. Ren;Lin Wang;Penghui Yang;Shancai Zhang;Tong Zhang
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文献类型：
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作者：
Z. Bai;G. Feng;Tianlong He;Weimin Li;Weiwei Li;Gangwen Liu;Z. Ren;Lin Wang;Penghui Yang;Shancai Zhang;Tong Zhang
本文提出了一种改进的混合6BA晶格作为合肥先进光设施(半)存储环的基线晶格。与DIAMOND-II晶格类似，该晶胞有一个长直段和一个中直段，但与中直段相邻的两个弯曲单元是LGB/RB单元(LGB：纵向梯度弯曲，RB：反向弯曲)，这既可以提供较低的发射度，又可以提供较短的衰减时间。所设计的储能环能量为2.2GeV，晶胞为20个，自然发射率约为85 pm·rad。
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.