Lhc Beam Stability and Performance of the Q/q’ Diagnostic Instrumentation
نویسندگان
چکیده
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 to identify 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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