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TY - CONF AU - Harada, K. AU - Higashi, N. AU - Liuzzo, S.M. AU - Nagahashi, S. AU - Nakamura, N. AU - Sakanaka, S. AU - Ueda, A. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - DQBA Lattice Option for the KEK-LS Project J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - KEK-LS is a fourth generation 3GeV light source and will be constructed in KEK Tsukuba campus. The lattice is 20 cells of ESRF type HMBA (Hybrid Multi Bend Achromat) with short straight section that enables to double the numbers of insertion device beam lines. The circumference is about 570m, and the horizontal natural emittance about 133pmrad. The conceptual design report (CDR) was published in October 2016. Adding two quadrupole magnets to the short straight section of the original lattice in CDR, the lattice design flexibility, emittance and dynamic apertures are improved. In this presentation, we show this new DQBA (Double Quadrupole Bend Achromat) lattice option for KEK-LS project. PB - JACoW CP - Geneva, Switzerland SP - 2675 EP - 2677 KW - emittance KW - lattice KW - insertion-device KW - insertion KW - dynamic-aperture DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPAB043 UR - http://jacow.org/ipac2017/papers/wepab043.pdf ER -