doi:10.18429/JACoW-IBIC2025-WEPMO06engHowling, EmilyGasior, MarekChambers, NicolasKieffer, RobertKrupa, MichalLefevre, ThibautMoser, BenjaminSullivan, HarryZannini, CarloBurrows, PhilipGeometrical studies for the arc beam position monitors FCC-eeAccelerators and Storage RingsThe electron-positron Future Circular Collider (FCC-ee) has challenging requirements for beam instrumentation, including the need for thousands of high-resolution beam position monitors (BPMs) presenting low impedance to the circulating beam. This paper details the requirements for the FCC-ee arc BPMs and investigates button-type pickups with various geometries through electromagnetic simulations using FCC-ee design parameters. The simulation results are used to estimate key BPM characteristics, including impedance and heating.2026http://cds.cern.ch/record/295494210.18429/JACoW-IBIC2025-WEPMO06http://cds.cern.ch/record/2954942oai:cds.cern.ch:2954942