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TY - CONF AU - Jiao, Y. AU - Li, X.Y. AU - Xu, G. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Performance Comparison of Different Ultralow Emittance Unit Cells J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The available minimum emittance of a storage ring and the ring performance is closely related to the unit cell of the lattice. Up to now, several ultralow-emittance unit cells have been proposed and applied in the lattice design of the diffraction-limited storage ring light sources. In this study we quantitatively compared the performance of three typical unit cells, based on mainly the parameters of the High Energy Photon Source. The results indicate that the modified-TME unit cell with antibend and longitudinal gradient dipole allows the lowest possible emittance, given a long enough cell length. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1382 EP - 1385 KW - emittance KW - lattice KW - dipole KW - storage-ring KW - quadrupole DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-TUPMF054 UR - http://jacow.org/ipac2018/papers/tupmf054.pdf ER -