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TY - CONF AU - Bai, Z.H. AU - Li, W. AU - Liu, G. AU - Wang, L. AU - Xu, D.R. AU - Zhang, T. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Study of Seven-Bend Achromat Lattices with Interleaved Dispersion Bumps for HALS J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - Previously, we proposed a multi-bend achromat (MBA) lattice concept, called the MBA with interleav-ed dispersion bumps, which was then used to design a 7BA lattice for the Hefei Advanced Light Source (HALS) storage ring. Recently, such a 7BA lattice was further designed and optimized for the HALS by changing the number of lattice cells, scanning working point and employing octupoles. And two new HALS designs with such 7BA lattices have been made, one with 30 lattice cells and a natural emittance of 25 pm·rad and the other with 28 cells and 33 pm·rad. They had much better nonlinear dynamics perfor-mances than the previous design. The detailed study for these two HALS lattices will be presented in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1495 EP - 1497 KW - lattice KW - storage-ring KW - emittance KW - octupole KW - linear-dynamics DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-TUPGW040 UR - http://jacow.org/ipac2019/papers/tupgw040.pdf ER -