[Halld-tagger] [New Logentry] Coherent edge position

[dalton at jlab.org]

Logentry Text:
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It would be useful to have a policy on how to set the coherent peak edge.  Apparently the shapes are somewhat different for different orientations on this diamond.  When we changed to 45/135 PERP the fit returned 9960 MeV and, although it didn't look too bad by eye on the GUI, the monitoring showed that the edge was not on the microscope.

https://logbooks.jlab.org/files/2018/10/3603472/rs_page27.png

I nudged the peak down to about 8830 MeV which put more than half of the edge on the microscope.  Apologies for the lack of other pictures but the beam is missing right now but I will add them later.

Should we do this based on the edge fit on the GUI, or based on the monitoring plots, with different numbers for each orientation?

Something to discuss at the next morning meeting perhaps?

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