# Beam-beam effects under the influence of external noise

Source: [Beam-beam effects under the influence of external noise](<https://www.sota2.com/research/paper/68fa2dbe1e209131ce85c056>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T16:27:22.586Z

Authors: K. Ohmi

Published: 2014-10-15T15:06:52.000Z

## Abstract

Fast external noise, which gives fluctuation into the beam orbit, is discussed in connection with beam-beam effects. Phase noise from crab cavities and detection devices (position monitor) and kicker noise from the bunch by bunch feedback system are the sources. Beam-beam collisions with fast orbit fluctuations with turn by turn or multi-turn correlations, cause emittance growth and luminosity degradation. We discuss the tolerance of the noise amplitude for LHC and HL-LHC.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1410.4092>)

[PDF](<https://arxiv.org/pdf/1410.4092.pdf>)