TY - CONF AU - Hejny, Volker TI - Spin tune determination and feedback M1 - FZJ-2025-02293 PY - 2025 AB - The talk covers over 10 years of R&D by the JEDI collaboration at COSY, Jülich. Main topics discussed are: online determination of spin tune and in-plane polarization, how to achieve large spin coherence times, and phase-lock feedback for synchronizing spin precession and RF devices. The R&D is primarily motivated by precision experiments on Electric Dipole Moments (EDMs) of charged particles in storage rings, including feasibility studies and a first deuteron EDM measurement at COSY. T2 - Polarized Ion Sources and Beams at EIC CY - 10 Mar 2025 - 12 Mar 2025, Stony Brook (USA) Y2 - 10 Mar 2025 - 12 Mar 2025 M2 - Stony Brook, USA LB - PUB:(DE-HGF)6 DO - DOI:10.34734/FZJ-2025-02293 UR - https://juser.fz-juelich.de/record/1041519 ER -