Koop, I. Otboev, A.V. Shatunov, Yu.M. Ideas for Longitudinal Polarization at the Z/W/H/top Factory JACoW Publishing Geneva, Switzerland 978-3-95450-216-5 10.18429/JACoW-eeFACT2018-WEXAA04 English 190-193 WEXAA04 polarization solenoid acceleration booster positron Contribution to a conference proceedings 2019 2019-04 https://doi.org/10.18429/JACoW-eeFACT2018-WEXAA04 http://jacow.org/eefact2018/papers/wexaa04.pdf Different schemes for getting the longitudinal polarization at FCC-ee are considered. Depolarization rates for rings with spin rotators are evaluated and methods of acceleration of polarized beams in a booster synchrotron are proposed.