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TY - CONF AU - Wang, S.W. AU - Li, J.Y. AU - Wang, Y.G. AU - Xu, W. AU - Xuan, K. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Optimization of a Low-Alpha Lattice for the HLS-II Storage Ring J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - To generate terahertz radiation at HLS-II, a low-alpha lattice scheme is proposed. The new lattice can reduce the bunch length in the storage ring, thus enhancing the coherent synchrotron radiation in the THz region. In this paper, the design and optimization of a low-alpha lattice is reported. The new lattice preserves the symmetry of nominal lattice and reduces the first and second order momentum factor at the cost of increasing maximum beta function and natural emittance. The bunch length is tracked and the result shows that the low-alpha lattice can effectively compress bunches in the storage ring. The performance of this low-alpha lattice can be further studied and improved. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3360 EP - 3362 KW - lattice KW - storage-ring KW - quadrupole KW - dynamic-aperture KW - sextupole DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPTS103 UR - http://jacow.org/ipac2019/papers/wepts103.pdf ER -