Sextupole reduction via chaos suppression at the National Synchrotron Light Source II
Abstract
We revisit the nonlinear lattice design approach for the National Synchrotron Light Source II (NSLS-II) storage ring. By suppressing chaos, we identify alternative sextupole configurations to the original design, which relied on the conventional strategy of simultaneously minimizing resonance driving terms (RDTs) and amplitude-dependent detuning (ADD). These alternatives achieve comparable performance while requiring fewer sextupoles. A detailed comparison of two representative solutions is presented and supported by experimental validation. Our results show that the dynamic aperture correlates more strongly with global chaos than with individual RDTs, and that the importance of minimizing ADD may have been overstated in earlier design strategies.
Fields of Study & Subjects
Particle Accelerators and Free-Electron Lasers
Advanced X-ray Imaging Techniques
Photocathodes and Microchannel Plates
Publication details
- Journal / source
- Physical Review Accelerators and Beams
- Publisher
- American Physical Society (APS)
- Volume
- 29
- Issue
- 3
- Publication date
- 11 February 2026
- Language
- EN