Speaker
Description
The Future Circular Collider electron-positron machine (FCC-ee) requires precise control of the optics to maximize experimental output. Corrections for linear optics are effective at restoring operational parameters after expected levels of misalignment and field errors have been applied. However, for some error seeds, key performance indicators including dynamic aperture (DA) and momentum acceptance (MA) remain degraded after the linear optics have been corrected to nominal values. An investigation of the non-linear optics in the presence of these errors is presented, to evaluate the global hybrid correction (GHC) optics against the local chromaticity correction (LCC) optics and to contribute to understanding of the reduction of MA and DA. Analysis of amplitude detuning, high-order chromaticity, and resonance driving terms in the two lattices provides insights into the designs’ susceptibility to certain errors and helps identify which non-linear effects are most destructive to the machine’s performance.
Funding Agency
We acknowledge the support of the Natural Sciences and Engineering Research Council of Canada (NSERC).
Nous remercions le Conseil de recherches en sciences naturelles et en génie du Canada (CRSNG)
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