[FFA_CEBAF_Collab] Hall C line at 22 GeV

[Jay Benesch]

Colleagues, 

I have added the material at the bottom of page 3 and the associated plots.   During the 12 GeV upgrade effort I used a Taguchi (fractional factorial) matrix I learned at GE to evaluate the robustness of optics designs.  I applied the same matrix here.  The design passed without issue.   The fractional factorial matrix provides full information about first order effects and limited information about cross-coupling yet is only nine trials instead of 3^4.   Much less expensive when each trial involves hardware, e.g. CT system x-ray targets.   File T0 is the same at yesterday's 10a with the matrix added in comments at the top of the file.  

Jay 
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