Emittance/TWISS parameter extraction

Using the perl/PDL script, beam sizes for Y (quad scan 0) and X (quad scan 1) were measured. These beam sizes were put into a "sdds" file so the nominal CEBAF emittance/TWISS tool could be used to plot and fit the data.

Two fits are performed a simple Least Squares Fit and one based on MINUIT. The LSF is also used to seed the MINUIT fit.

Y plot and the GUI with results for the first quad scan.

Y beam size squared vs K1*L

CEBAF graphical emittance tool with Y data and results shown

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X plot and the GUI with results for the second quad scan.

X beam size squared vs K1*L

CEBAF graphical emittance tool with X data and results shown

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emittance| beta |alpha |	(m-rad) | (m) | |
1.3e-6 | 0.35 | 2.0 |	3.7e-6 | 0.41 | 2.3 |