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TY - CONF AU - Simon, M. AU - Bai, M. AU - Bobnar, J. AU - Böhme, C. AU - Hinder, F. AU - Lorentz, B. AU - Malec, J. AU - Marusic, A. AU - Modic, R. AU - Weidemann, C. AU - Žagar, K. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - COSY Slow Orbit Feedback System J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - The Cooler Synchrotron (COSY) at Forschungszentrum Jülich is currently carrying out the preparation for a direct measurement of the electric Dipole Moment (EDM) of the deuteron using an RF Wien filter*,**. In a magnetic storage ring with the spin vector aligned along the direction of motion, the EDM manifests in a buildup of the vertical spin component. Besides this signal, radial magnetic fields due to a distortion of the vertical closed orbit can produce a similar signal. This signal is a systematic limit of the proposed measurement procedure. Based on simulation studies***, a vertical closed orbit distortion with a RMS smaller than 0.1 mm is required to achieve a sensitivity of 10⁻¹⁹ e.cm or better. In order to accomplish this challenging goal, a slow orbit feedback system was proposed and recently commissioned at COSY. The design and commissioning results will be presented, and the future plan will also be discussed. PB - JACoW CP - Geneva, Switzerland SP - 1802 EP - 1805 KW - controls KW - closed-orbit KW - EPICS KW - feedback KW - dipole DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-TUPIK050 UR - http://jacow.org/ipac2017/papers/tupik050.pdf ER -