Spin tune mapping at COSY
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We developed a method to control the systematic background for Electric Dipole Moment searches in all-magnetic storage rings at the level of ≈ 10− 20e ⋅cm for deuterons at beam momentum 970 MeV/c. The method is based on a principle of spin tune modulation in a predictable way and was tested at cooler synchrotron COSY in Forschungszentrum Juelich. Two static solenoids were used as spin rotators. A special scheme of precise spin tune measurements at different spin rotation angles in solenoids allowed to determine the presence of systematic background.
KeywordsSpin tune Imperfections Electric dipole moment
PACS13.40.Em 11.30.Er 29.20.Dh 29.27.Hj
A. Saleev is supported by a Grant from the Russian Science Foundation (Grant No. RNF-16-12-10151). He gratefully acknowledges his support by Nuclear Physics Institute at Forschungszentrum Juelich.
- 1.JEDI Collaboration, proposals available from http://collaborations.fz-juelich.de/ikp/jedi/