BEAM BASED SEXTUPOLE ALIGNMENT STUDIES FOR COUPLING CONTROL AT THE ASLS

Offsets in sextupole magnets can be a significant source of coupling in a storage ring and hinder efforts to minimize the vertical emittance. Beam offsets in the sextupoles at the Australian Synchrotron Light Source were measured using orbit response matrix analysis in LOCO with differing magnet strengths. The results were used to obtain an estimate of the offset in each sextupole.