Particle tracking shows that an hourglass-driven resonance amplifies machine noise into vertical emittance growth in flat-beam collisions, and a sextupole-crab-cavity dynamic focusing scheme suppresses it.
On the Relation of the LHeC and the LHC
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abstract
The present note relies on the recently published conceptual design report of the LHeC and extends the first contribution to the European strategy debate in emphasising the role of the LHeC to complement and complete the high luminosity LHC programme. The brief discussion therefore focuses on the importance of high precision PDF and $\alpha_s$ determinations for the physics beyond the Standard Model (GUTs, SUSY, Higgs). Emphasis is also given to the importance of high parton density phenomena in nuclei and their relevance to the heavy ion physics programme at the LHC.
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Dynamic Focusing to Suppress Emittance Transfer in Crab-Crossing Flat Beam Collisions
Particle tracking shows that an hourglass-driven resonance amplifies machine noise into vertical emittance growth in flat-beam collisions, and a sextupole-crab-cavity dynamic focusing scheme suppresses it.