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Description
In ghost-bunch collider layouts, removing the beam–beam interaction allows multiple interaction points (IPs) to be placed sequentially along a linac, but each IP’s strong final-focus optics introduces significant chromaticity that must be locally compensated. Because a linac provides essentially no natural dispersion, standard sextupole schemes cannot be applied in their usual form, requiring chromatic correction to be embedded directly into the IP lattice. This work analyzes the chromatic behavior of such optics using the Montague (W) functions, derives the phase and beta-matching conditions for effective cancellation between consecutive IPs, and quantifies the remaining chromaticity under realistic optics errors. The results provide design guidelines and performance limits for implementing robust chromatic compensation in multi-IP ghost-bunch systems.
| In which format do you inted to submit your paper? | LaTeX |
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