Friday, June 10, 2005, 10:30 am — Seminar Room, Bldg. 725
Various beam-based measurements, including orbit response matrix (ORM) and BPM turn-by-turn data are used to model the Fermilab Booster in this study. The gradient parameters of adjacent combined function magnets are found to be deeply correlated in the ORM problem. By imposing
proper constraints in fitting the ORM to model, we btained an equivalent lattice model and consistent result about the gradient errors.
A new powerful data analysis method, the independent component analysis (ICA) is introduced to process the simultaneous BPM turn-by-turn data. This method is able
to extract clean coherent betatron motion from noisy data, which can then be used to measure beta function and betatron phase advance and to measure betatron tune to high
accuracy. The ICA method can also separate the synchrotron motion from the BPM samples for dispersion measurement.
The application of the ICA method to the Booster has enabled the measurement of the linear lattice functions, transverse impedance and the observation of synchrotron motion through BPM data.
Hosted by: Jim Murphy
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