Speaker
Description
Ground motion can significantly impact beam stability in the FCC-ee, potentially degrading luminosity at the interaction point (IP). The study models vibrations of accelerator components, including the interaction region cryostats at the Machine Detector Interface (MDI) and the quadrupole girders in the arcs. Using measured power spectral densities (PSDs) and component-specific transfer functions, realistic time-dependent displacement signals are generated and applied in Xsuite particle tracking simulations. Analysis of beam centroid motion at the IP and the relative transverse offset between colliding beams quantifies the resulting luminosity degradation. These results indicate that ground-induced motion may necessitate dedicated feedback systems for both orbit correction and luminosity stabilization. Findings inform the design of vibration mitigation strategies and feedback strategies for the FCC-ee.
| Paper status | Resubmitted proceeding files received and assigned to an editor. Accepted. |
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