RF system models for the CERN Large Hadron Collider with application to longitudinal dynamics

Journal Article · Thu Mar 03 04:00:00 EST 2011 · Phys.Rev.ST Accel.Beams 13:102801,2010

DOI:https://doi.org/10.1103/PhysRevSTAB.14.029901· OSTI ID:1007544

Mastorides, T; Rivetta, C; Fox, J D; Winkle, D Van; Baudrenghien, P

The LHC RF station-beam interaction strongly influences the longitudinal beam dynamics, both single bunch and collective effects. Non-linearities and noise generated within the Radio Frequency (RF) accelerating system interact with the beam and contribute to beam motion and longitudinal emittance blowup. Thus, the noise power spectrum of the RF accelerating voltage strongly affects the longitudinal beam distribution. Furthermore, the coupled-bunch instabilities are also directly affected by the RF components and the configuration of the Low Level RF (LLRF) feedback loops. In this work we present a formalism relating the longitudinal beam dynamics with the RF system configurations, an estimation of collective effects stability margins, and an evaluation of longitudinal sensitivity to various LLRF parameters and configurations.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1007544
• Report Number(s): SLAC-PUB-14292
• Journal Information: Phys.Rev.ST Accel.Beams 13:102801,2010, Journal Name: Phys.Rev.ST Accel.Beams 13:102801,2010 Journal Issue: 2 Vol. 14; ISSN 1098-4402
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Accelerators
ACCPHY
BEAM DYNAMICS
CERN
CONFIGURATION
DISTRIBUTION
EVALUATION
FEEDBACK
HADRONS
RF SYSTEMS
SENSITIVITY
STABILITY