The observations of coherent instabilities in all operational phases of the LHC during Run 2
are summarised, describing their impact on the performance. The evolution of the mitigation …

The transverse emittance growth rate of colliding hadron beams driven by external sources
of noise is investigated based on existing analytical model as well as on macro-particle …

Abstract Operating at 6.5 TeV, the LHC surpassed the expectations and delivered an
average of 66 fb–1 integrated luminosity to the two high luminosity experiments ATLAS and …

The beam-beam interaction is one of the most severe limitations on the performance of
circular colliders, as it is an unavoidable strong nonlinear effect. As one aspires for greater …

In order to describe and follow the evolution of the LHC luminosity, a model based on the
effects of intra-beam scattering, synchrotron radiation, elastic scattering and luminosity burn …

This note summarised the status of the studies on the coherent beam-beam effects in the HL-
LHC project. It is shown that the obit, tune, chromaticity and dynamic β effects due to head …

High-energy hadron colliders are designed to generate particle collisions within specialized
detectors. A higher number of collisions is achieved with high-quality beams of low …

A short end of fill experiment, aiming at evaluating the variation of the emittance growth rate
on operational beams in collision when reducing the bandwidth of the transverse damper, is …

High-energy hadron colliders are designed to generate particle collisions within specialized
detectors. A higher number of collisions is achieved with high-quality beams of low …

Abstract Operating at 6.5 TeV, the LHC surpassed the expectations and delivered an
average of 66 fb $^{− 1} $ integrated luminosity to the two high luminosity experiments …