How to Reach a Thousand-Second in-Plane Polarization Lifetime with 0.97 GeV/c Deuterons in a Storage Ring

A deuteron beam polarization lifetime near 1000 seconds in the horizontal plane of the magnetic storage ring COSY has been observed. This long spin coherence time was maintained through a combination of beam bunching, electron cooling, sextupole field corrections, and the suppression of collective effects through beam current limits. This record lifetime is required for a storage ring search for an intrinsic electric dipole moment on the deuteron at a statistical sensitivity level approaching 10-29 e∙cm.

Phys. Rev. Lett. 117 (2016) 054801

Last Modified: 19.05.2022