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Review of the ESRF optics measurements
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Europe/Zurich
6/R-012 - conference room (CERN)
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Jaime, Using fix frequency for Sussix
Need to test this method for LHC with large BPM noise. Without noise no imporvement was seen.
For ESRF using fixed frequency improves b-beating by few 0.1%.
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Lukas, ESRF optics analysis
Tune versus Momentum needs model.
Beta-from phase deviates from beta from amp by ~4% peak.
Maybe it is better to analyze dumped data since the amplitude effect on the beta measurement
seems larger than BPM resolution.
Andrea mentions that second order dispersion did not match between TbT and orbit response.
-> to be added in our codes (Andy did it so codes should be revived).
The spectrum is poluted with sidebands or satelites that depend on amplitude and tune.
Beta-from-phase and beta-from-phase from different parts of the data show clear discrepancies.
Chriplets!
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Andrea, Dr. StrangeOptics !
Andrea has to try analysis of the complex data! He thought sextupoles affect f1001.
Coupling seems to be better measured from ORM method.
Creating a model matching phase is incompatible with matching response matrix.
The effect of calibration error affects beta by twice! (not by less).
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