7 papers
Proceedings of the CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18-29 Aug 2013
W. Herr
This report presents the proceedings of the Course on Advanced Accelerator Physics organized by the CERN Accelerator School. The course was held in Trondheim, Norway from 18 to 29…
Beam-Beam Effects
W. Herr, T. Pieloni
One of the most severe limitations in high-intensity particle colliders is the beam-beam interaction, i.e. the perturbation of the beams as they cross the opposing beams. This intr…
Introduction to Landau Damping
W. Herr
The mechanism of Landau damping is observed in various systems from plasma oscillations to accelerators. Despite its widespread use, some confusion has been created, partly because…
Analysis of long-range studies in the lhc - Comparison with the model
D. Kaltchev, W. Herr
We find that the observed dependencies (scaling) of long-range beam-beam effects on the beam separation and intensity are consistent with the simple assumption that, all other para…
Coherent beam-beam mode in the LHC
X. Buffat, R. Calaga, R. Giachino +4
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 parti…
Operational considerations on the stability of colliding beams
X. Buffat, W. Herr, T. Pieloni
While well studied in the absence of beam-beam and while colliding head-on, the stability of the LHC beams can be very critical in intermediate steps. During the squeeze, the long-…