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Study of Multi-bend Achromat Lattices for the HALS Diffraction-limited Storage Ring |
ion, lattice, storage-ring, emittance |
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- Z.H. Bai, L. Wang
USTC/NSRL, Hefei, Anhui, People's Republic of China
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In this paper, two multi-bend achromat (MBA) lattice concepts, the locally symmetric MBA and MBA with interleaved dispersion bumps, are described, which have been used to design the Hefei Advanced Light Source (HALS), a soft X-ray diffraction-limited storage ring proposed at NSRL. In these two MBA concepts, most of the nonlinear effects caused by sextupoles can be cancelled out within one lattice cell as in the hybrid MBA proposed by ESRF EBS, but the available family number of sextupoles in one cell can be more than that in the hybrid MBA so that, for example, the tune shift with momentum can be better controlled to increase the dynamic momentum aperture (MA). Using the two MBA concepts, three kinds of lattices, 8BA, 6BA and 7BA, have been studied for the HALS, showing large on- and off-momentum dynamic apertures and large enough dynamic MA.
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Slides MOP2WB04 [2.261 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-FLS2018-MOP2WB04
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