Abstract The Large Hadron Collider (LHC) at CERN is built to collide intense proton beams
with an unprecedented energy of 7 TeV. The design stored energy per beam of 362 MJ …

The proton physics run in 2015 confirmed that electron cloud poses a significant challenge
to LHC operation with beams of 25 ns bunch spacing. Despite evident conditioning of the …

In the past, transverse coherent instabilities have been observed at the Hadron-Electron
Ring Accelerator (HERA) proton ring that were instigated by the presence of linear coupling …

The first proton run of the LHC was very successful and resulted in important physics
discoveries. It was followed by a two-year shutdown where a large number of improvements …

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 …

Diagnostics of nonlinear beam dynamics has become more important for the LHC as it
advances into increasingly challenging regimes of operation, as well as for the High …

Landau damping of coherent modes is strongly dependent on the exact shape of the particle
bunches. One often assumes that the transverse distributions in high-energy hadron …

Particle accelerators and colliders are established as one of the major driving forces in
fundamental particle physics research. Particle colliders have over the past decades led to …

Recent observations in the LHC point to the existence of an amplitude dependent closest
tune approach. However this dynamical behavior and its underlying mechanism remain …

Simulation work during LHC Run 1 established that linear coupling had a large impact on
nonlinear observables such as amplitude detuning and dynamic aperture. It is generally …