Linear and non-linear optics measurements in PS using turn-by-turn BPM data

Abstract

For the first time, the optics of the CERN Proton Synchrotron (PS) was measured using turn-by-turn BPM data of forced betatron oscillations excited with an AC dipole. We report results of phase advance and beta-beating measurements. Linear coupling was globally minimised along the machine by measuring and correcting coupling resonance driving terms. Finally, non-linear properties of the ring were probed looking at third- and fourth-order resonance driving terms and amplitude detuning