[Hps-analysis] Moller Gap Update

[Bradley T Yale]

I think I may have found the cause as to what is causing that dip in the 2.3 GeV Moller track energy after recon:

Not the generator. Pure geometric acceptance.


Plots 1-2: 1.056 GeV MC is suspiciously free of dips after recon, and the hot ECal hits are all above the electron hole.

This is using the old generator by the way.


Plots 3-4: These are only the Mollers which had that strange "gap" in layer 5 SVT hits (-9 to -13 mm). The final plot shows the gap.

Notice where they land on the ECal.


So it seems that the corner of the electron hole happens to be where electrons with exactly half the beam energy go for 2.3 GeV...


-Brad
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CUT_moller_E.png
Type: image/png
Size: 14796 bytes
Desc: CUT_moller_E.png
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ECal_hits.png
Type: image/png
Size: 16443 bytes
Desc: ECal_hits.png
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0006.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: gap.png
Type: image/png
Size: 14495 bytes
Desc: gap.png
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0007.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: GapTrackE.png
Type: image/png
Size: 13129 bytes
Desc: GapTrackE.png
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0008.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: L5.png
Type: image/png
Size: 21102 bytes
Desc: L5.png
URL: <https://mailman.jlab.org/pipermail/hps-analysis/attachments/20160415/3d321b86/attachment-0009.png>