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TY - CONF AU - Zhao, Y. AU - Auchmann, B. AU - Chaikovska, I. AU - Chehab, R. AU - Craievich, P. AU - Döbert, S. AU - Kosse, J. AU - Latina, A. AU - Ma, L. AU - Martyshkin, P.V. AU - Zennaro, R. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Comparison of Different Matching Device Field Profiles for the FCC-ee Positron Source J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - In this report, we compared different matching device field profiles for the FCC-ee positron source. The matching device is used to capture positrons with magnetic field. A flux concentrator was designed with a conical inner chamber. A smaller aperture and a larger aperture were studied. An analytic field profile was also studied using an adiabatic formula. The peak field of the analytic profile as well as beam and target parameters was optimised to achieve a maximum positron yield. A safe energy deposition in the target was guaranteed by requiring a constraint on the deposited power and peak energy deposition density. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2617 EP - 2620 KW - positron KW - target KW - linac KW - electron KW - simulation DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB015 UR - https://jacow.org/ipac2021/papers/wepab015.pdf ER -