In general terms, a beam is unstable when a moment of its distribution exhibits exponential
growth… Instabilities are limiting factor of number of bunches that can be injected and stored …

Since the beginning of the Large Hadron Collider (LHC) commissioning, spectral
components at harmonics of the mains frequency (50 Hz) have been observed in the …

At the HL-LHC, proton bunches will be rotated by crab-cavities close to the interaction
regions to maximize the luminosity. A method to rapidly monitor the transverse position of …

This paper gives an overview of the available systems for transverse instability diagnostics
in the LHC with a focus on those that have been added or upgraded since run 1. The status …

Transverse beam instabilities are a major cause of emittance dilution and beam losses in
high intensity hadron accelerators. This paper presents an overview of the system that has …

An overview on some of the major challenges for beam instrumentation and diagnostics for
large ring colliders is given. In the Introduction the general challenges are listed …

Prototype studies in 2012/13 have shown that the newly developed multi-band instability
monitor (MIM) can provide sub-micrometer resolutions for intra-bunch and head-tail beam …

The LHC and SPS transverse dampers use beam position electronics with I, Q detection at
400 MHz and 200 MHz, of the sum and difference signals from a strip-line pick-up …

This reports outlines the development of a new ultra-wideband electro-optic beam position
monitor (EO-BPM) for use in the Large Hadron Collider (LHC) which utilises birefringent …

Two high energy hadron colliders are currently in the operational phase of their life-cycle,
RHIC and LHC. A major upgrade of the LHC, HL-LHC, planned for 2023 aims at …