Speaker
Description
Vibrations cause emittance growth, beam misalignment at the interaction point, and particle loss, limiting accelerator performance. Ground motion and technical noise are characterized by absolute power spectral density (PSD) and spatial correlation. Mechanical support resonances, which amplify these effects, are determined via transfer functions. A method to generate random displacements from these vibration characterizations was developed using one- and two-dimensional inverse Fourier transforms. The generated displacements accurately reproduced the input PSD spectra and spatial correlation, as verified by Welch's estimation. As a demonstration, the displacements were applied to X-suite beam dynamics simulations of the FCC-ee booster lattice to assess emittance growth and beam offsets. The method enables iterative optimization of mechanical supports and beam transport systems to minimize vibration impacts.
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