Measurement of the deuteron static and oscillating electric dipole moment at the COoler SYnchrotron COSY
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Electric dipole moments (EDMs) play a central role in searches for CP violation beyond the Standard Model.
This talk  reviews activities at the COoler SYnchrotron COSY at Forschungszentrum Juelich in  Germany.
A series of milestones in the preparation for electric dipole measurements
of charged hadrons in storage rings have been achieved in recent years at COSY.
These include  the measurement of spin tune, reaching spin coherence times
of over 1000 seconds, operating a feedback system to control the spin precession
in storage rings and the operation of radio-frequency  devices to manipulate the spin motion.

These achievements led to a first search for axion-like particles in a storage rings
and a first measurement of the deuteron's   EDM. The talk discusses the main results obtained at COSY
and plans for future developments.