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TY - CONF AU - Xu, J.H. AU - Bai, Z.H. AU - Ren, Z.L. AU - Tan, J.J. AU - Yang, P.H. AU - Zhang, Q. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Study of Seven-Bend-Achromat Lattice Option for Half J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - A seven-bend-achromat (7BA) storage ring lattice design for Hefei Advanced Light Facility (HALF) with a beam energy of 2.2 GeV and a circumference of 388.8 m is presented. The 7BA lattice is designed with the combined function bends and reverse bends which has a natural emittance of about 67 pm·rad. Two lattice candidates with different tunes have been selected. One lattice has better nonlinear dynamic performance for off-axis injection. The other lattice provides lower beta functions at the center of straight sections. The results of these studies are discussed in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3926 EP - 3928 KW - lattice KW - emittance KW - storage-ring KW - octupole KW - sextupole DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-THPAB073 UR - https://jacow.org/ipac2021/papers/thpab073.pdf ER -