Dynamic Aperture Studies for SPEAR 3 [report]

William Corbett
1998 unpublished
The Stanford Synchrotron Radiation Laboratory is investigating an accelerator upgrade project that would replace the present 130 nmrad FODO lattice with an 18 nmrad double bend achromat DBA lattice: SPEAR 3. The low emittance design yields a high brightness beam, but the stronger focusing in the DBA lattice increases chromaticity and beam sensitivity t o m a c hine errors. To ensure e cient injection and long Touschek lifetime, an optimization of the design lattice and dynamic aperture has been
more » ... c aperture has been performed. In this paper, we review the methods used to maximize the SPEAR 3 dynamic aperture including necessary optics modi cations, choice of tune and phase advance, optimization of sextupole and coupling correction, and modeling e ects of machine errors, wigglers and lattice periodicity.
doi:10.2172/9934 fatcat:vlp7oouwwzaxfacfmtbtbb3n5u