A Novel RF E × B Spin Manipulator at COSY

Abstract

The Jülich Electric Dipole Moment Investigations (JEDI) Collaboration is developing tools for the measurement of permanent Electric Dipole Moments (EDMs) of charged, light hadrons in storage rings. While the Standard Model prediction for the EDM gives unobservably small magnitudes, a non-vanishing EDM from [Formula: see text] violating sources beyond the standard model can lead to a tiny build-up of vertical polarization in a beforehand horizontally polarized beam. This requires a spin tune modulation by an RF dipole without any excitation of coherent beam oscillations. In the course of 2014, a prototype RF [Formula: see text] dipole has been successfully commissioned and tested. We verified that the device can be used to continuously flip the vertical polarization of a 970[Formula: see text]MeV/c deuteron beam without exciting any coherent beam oscillations.