The LHC requires an excellent control of particle losses which will be
provided by the LHC Cleaning and Machine Protection System. The performance
and function of these systems depends critically on the stability of the beam
and may eventually limit the LHC performance.
In order to counteract environmental and accelerator-inherent beam
perturbation sources, control of the key beam parameters - orbit, tune,
energy, coupling and chromaticity - will be an integral part of LHC
operation. Since manual correction of these parameters may reach its limit
with respect to required precision and expected time-scales, the LHC is the
first proton collider that requires automatic feedback control systems for
safe and reliable machine operation.
This seminar provides an overview on the stability, design and architecture of
the LHC beam-based feedback systems.