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TY - UNPB AU - Koop, I. AU - Otboev, A.V. AU - Shatunov, Y.M. ED - Zhao, Ning ED - Poole, John ED - Schaa, Volker RW TI - Resonant Depolarization and Energy Calibration Issues in FCC-ee J2 - Proc. of eeFACT2016, Daresbury, UK, October 24-27, 2016 C1 - Daresbury, UK T2 - ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e^+e^- Colliders T3 - 58 LA - english AB - Polarized electron and positron beams are needed for precise energy calibration in storage rings of FCC-ee collider. The resonant depolarization technique and, alternatively, the free spin precession approach shall provide the extremely accurate energy determination of beams in future FCC-ee collider. The relationship between the spin tune and the local beam energy in the collision point will be discussed in the report. Also some preliminary ideas of the magnetic spectrometers for the local beam energy measurement will be presented. PB - JACoW CP - Geneva, Switzerland ER -