PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Accelerators for HEP
Emittance Tuning for the Future Circular e+/eCollider (FCC-ee)
T. Charles,* B. Holzer, K. Oide, F. Zimmermann
*corresponding author
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Pre-published on: June 10, 2020
Published on:
Abstract
The Future Circular e+/e- Collider (FCC-ee) presents an appreciable challenge for emittance tuning due to the strong final focusing and chromaticity correction, required to achieve high luminosities in the order of 10$^{36}$cm$^{-2}$s$^{-1}$. The proposed 100 km e+/e circular collider, FCC-ee is being designed to undertake precision studies and rare decay observations in the range of 90 to 350 GeV center of mass energy, with luminosities ranging from 1.7x10$^{35}$cm$^{-2}$s$^{-1}$ to 230x10$^{35}$cm$^{-2}$s$^{-1}$. In order to reach these luminosities, large beta values are encountered preceding to the IP, increasing the susceptible to misalignments and field errors. In this paper, we describe a comprehensive correction strategy used for the low emittance tuning. The strategy includes programs that have been developed to optimise the lattice based on Dispersion Free Steering, linear coupling compensation based on Resonant Driving Terms and beta beat correction utilising response matrices.
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