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TY - CONF AU - Sanz Ull, A. AU - Atanasov, M.G. AU - Balhan, B. AU - Borburgh, J.C.C.M. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan TI - Alternative Proposal for FCC-hh Extraction Septa J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Partile Accelerator Conference T3 - 10 LA - english AB - Challenging requirements are set for the FCC extraction septa magnets, notably for the magnetic field level, the septum thickness and the leak field. An alternative to the baseline FCC extraction layout with normal conducting Lambertson septa is proposed, consisting of a Superconducting Shield (SuShi) stage and a Truncated Cosine theta septa stage with the aim of reducing the necessary number of septa and installed length. The principal parameters of the septa are described and the feasibility discussed. Areas for study improvement are identified. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4248 EP - 4251 KW - septum KW - extraction KW - quadrupole KW - vacuum KW - simulation DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-THPTS062 UR - http://jacow.org/ipac2019/papers/thpts062.pdf ER -