In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the
Future Circular Collider (FCC) study was launched as a world-wide international …

In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the
Future Circular Collider (FCC) study was launched as a world-wide international …

S. Antipov, F. Antoniou, R. Appleby, G. Arduini, J. Barranco, P. Baudrenghien, N. Biancacci,
C. Bracco, R. Bruce, X. Buffat, R. Calaga, LR Carver, M. Crouch, R. De Maria, S. Fartoukh, D …

Particle physics has arrived at an important moment of its history. The discovery of the Higgs
boson, with a mass of 125 GeV, completes the matrix of particles and interactions that has …

The integrated luminosity, a key figure of merit for any particle-physics collider, is closely
linked to the peak luminosity and to the beam lifetime. The instantaneous peak luminosity of …

Beam instabilities cover a wide range of effects in particle accelerators and they have been
the subjects of intense research for several decades. As the machines performance was …

Since the first transverse instability observed in 2010, many studies have been performed on
both measurement and simulation sides and several lessons have been learned. In a …

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 …

Colliding bunch trains in a circular collider demands a certain crossing angle in order to
separate the two beams transversely after the collision. The magnitude of this crossing angle …

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 …