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TY - CONF AU - Nosochkov, Y.M. AU - Cai, Y. AU - Crouch, M.P. AU - Giovannozzi, M. AU - Hofer, M. AU - Keintzel, J. AU - Risselada, T. AU - Todesco, E. AU - Tomás, R. AU - Zhou, D. AU - Zimmermann, F. AU - van Riesen-Haupt, L. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Optimized Arc Optics for the HE-LHC 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 High Energy LHC (HE-LHC) proton-proton collider is a proposed replacement of the LHC in the existing 27-km tunnel, with the goal of reaching the centre-of-mass beam energy of 27 TeV. The required higher dipole field can be realized by using 16-T dipoles being developed for the FCC-hh design. A major concern is the dynamic aperture at injection energy due to degraded field quality of the new dipole based on Nb3Sn superconductor, the potentially large energy swing between injection and collision, and the slightly reduced magnet aperture. Another issue is the field in quadrupoles and sextupoles at top energy, for which it may be cost-effective, wherever possible, to stay with Nb-Ti technology. In this study, we explore design options differed by arc lattice, for three choices of injection energy, with the goal of attaining acceptable magnet field and maximum injection dynamic aperture with dipole non-linear field errors. PB - JACoW Publishing CP - Geneva, Switzerland SP - 277 EP - 280 KW - dipole KW - lattice KW - injection KW - sextupole KW - optics DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-MOPMF067 UR - http://jacow.org/ipac2018/papers/mopmf067.pdf ER -