LHC Beam Stability and Performance of the Q/Q' Diagnostic Instrumentation

The BBQ tune (Q) and chromaticity (Q’) diagnostic systems played a crucial role during the LHC commissioning while establishing circulating beam and first ramps. Early on, they allowed identifying issues such as residual tune stability, beam spectrum interferences and beam-beam effects – all of whic...

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Detalles Bibliográficos
Autores principales: Gasior, M, Boccardi, A, Jackson, S, Jones, OR, Steinhagen, RJ
Lenguaje:eng
Publicado: 2010
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1267395
Descripción
Sumario:The BBQ tune (Q) and chromaticity (Q’) diagnostic systems played a crucial role during the LHC commissioning while establishing circulating beam and first ramps. Early on, they allowed identifying issues such as residual tune stability, beam spectrum interferences and beam-beam effects – all of which may impact beam life-times and thus are being addressed in view of nominal LHC operation. This contribution discusses the initial beam stability in relation to the achieved instrumentation sensitivity, corresponding tune frequency and Q’ resolution.

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