BETA-BEAT Correction Using Strong Sextupole Bumps in PEP-II

摘要

A method for correcting lattice beta mismatches has been developed for the PEP-II collider using orbit offsets in strong sextupoles. The solution is first predicted in the MAD program by modelling closed orbit bumps in the plane of correction at the sextupoles strongest in that plane. The derived solution is then tested in the machine to confirm prediction, and finally dialled into the machine under high-current conditions.