[Primexd] [New Logentry] Be runs statistics (updated)

[ilarin at jlab.org]

Logentry Text:
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Here are updated plots for all Be and Be-empty runs, and for He-empty first runs (the plot w/o 2nd black histogram).

The total number of triggers processed:

Be CCAL_FCAL  2.3B
Be PS                  0.48B

Be empty CCAL_FCAL 0.16B
Be empty PS                  0.23B

according to ps trigger ratio empty Be is about 1/3 of total (Be+Be-empty)
Empty Be histograms (black) were scaled accordingly.
Empty Be compton peak level ~10%...15% of Be peak.

Compton histograms are for CCAL cluster energy ratio to the energy calculated from a production angle, beam energy, and Compton kinematics.
Eta mass plot shows about 240K reconstructed decays with sigma 28MeV (single gamma energy cut 1GeV, two gamma energy cut 6GeV), no constraints applied for this plot.
The number of exclusive etas in Be sample is about 4K.
Eta prime shows a hint of a possible peak, beam energy constraint has been applied for this plot. This needs more investigation to verify if it is a real peak.






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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3662704
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