Commissioning simulations for the Argonne Advanced Photon Source upgrade lattice

Abstract

A hybrid seven-bend-achromat lattice that features very strong focusing elements and a relatively small vacuum chamber has been proposed for the Advanced Photon Source (APS) upgrade. The design lattice parameters during commissioning will need to be quickly achieved in order to minimize the interruption of user operation. This paper describes start-to-end simulation of the machine commissioning beginning from first-turn trajectory correction, progressing to orbit correction, and culminating in lattice correction and coupling adjustment. The automated commissioning procedure shows that the rapid commissioning of the ultralow emittance lattice is possible. It also enables a more rigorous statistical evaluation of expected performance of proposed lattices.