CERN Accelerating science

Published Articles
Title	Emittance Growth with Crab Cavity and Damper Noise in LHC
Author(s)	Paret, Stefan (LBNL, Berkeley) ; Qiang, Ji (LBNL, Berkeley)
Publication	2013
Number of pages	3
In:	4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.1706
Subject category	Accelerators and Storage Rings
Abstract	Strong-strong beam-beam simulations are employed to investigate the noise sensitivity of the emittance in the future High Luminosity (HL)-LHC. Noise in the accelerator causes fluctuations of the bunch centroids at the interaction points (IPs) which cause emittance growth for large beam-beam parameters. Two noise sources are examined: Crab cavities and the transverse damper. The damper noise is adjusted to bring simulations in agreement with an emittance measurement in a past LHC run. Results from simulations with HL-LHC beam parameters using different noise levels, damper gains and working points are discussed.
Copyright/License	publication: (License: CC-BY)

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