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TY - CONF AU - Jiao, Y. AU - Chen, S.Y. AU - Xu, G. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Candidate HEPS Lattice Design With Emittances Approaching the Diffraction Limit of Hard X-Rays J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The High Energy Photon Source is a 6-GeV, kilometre-scale storage ring light source to be built in Beijing. A lattice of the storage ring was proposed, consisting of 48 hybrid 7BAs, and having a natural emittance of 60 pm and a circumference of ~1.3 km. In this paper, we discuss the possibility of further reducing the emittance to approach the diffraction limit of hard X-ray with 'typical' wavelength of 1 Å. We introduce the considerations on the choice of lattice structure and circumference, and concrete lattice designs. PB - JACoW CP - Geneva, Switzerland SP - 2703 EP - 2705 KW - lattice KW - emittance KW - dipole KW - storage-ring KW - brightness DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPAB054 UR - http://jacow.org/ipac2017/papers/wepab054.pdf ER -