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Instrumentation brain-storming

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Presentation on theme: "Instrumentation brain-storming"— Presentation transcript:

1 Instrumentation brain-storming
R. De Maria WP2 meeting

2 IP orbit feedback Today the machine is sufficiently reproducible not to need an orbit feedback at the IP. For HL-LHC it might not be case for the lowest value of β* possible. Xmeasured (t)=Xtrue(t)+Oerror(t, Ib, …) Std(Xerror(t, Ib, …)) <2 µm when sampled at 10 Hz for the consecutive samples (10 hours) <Ib< , |Xtrue|< 15 mm samples should be delivered to the feedback DSP within 20 ms delay

3 AC Dipole optics measurement
Today amplitude data from AC dipole measurements is not sufficiently accurate to measure β-function in the Q1-Q4 areas as compared with K-modulation. Amplitude data would allow much faster optics measurements if available. DFT(Xmeasured (t), ω)=Serror(ω,Ib,<X>…) DFT(Xtrue(t), ω) |Serror(ω,Ib, <X>,…)-1|<0.02 and phase( Serror(ω,Ib, <X>,…) )<0.0001 16384 sample turn by turn samples for: <Ib< , |Xtrue|< 15 m 0.1<ω<0.4 Few single bunches


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