Coherent beam-beam mode in the LHC
X. Buffat (EPFL, Lausanne) (CERN), R. Calaga (CERN), R. Giachino, (CERN), W. Herr (CERN), G. Papotti (CERN), T. Pieloni (CERN), S. White, (Brookhaven)
TL;DR
This paper reports observations of coherent beam-beam modes in the LHC, discusses their impact on operation, and identifies potential instabilities driven by machine impedance.
Contribution
It provides the first detailed experimental characterization of beam-beam coherent modes and their potential destabilization mechanisms in the LHC.
Findings
Identification of beam-beam coherent modes during experiments
Discussion of their role in LHC physics operations
Candidates for impedance-driven beam instabilities
Abstract
Observations of single bunch beam-beam coherent modes during dedicated experiments in the LHC are presented. Their role in standard operation for physics is discussed and, in particular, candidates of beam-beam coherent mode driven unstable by the machine impedance are presented.
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Taxonomy
TopicsParticle Accelerators and Free-Electron Lasers · Particle accelerators and beam dynamics · Superconducting Materials and Applications