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Here is the data for comparison, same SVT cut.</p>
<p>There are more hits away from the corner, and so no gap in the energy.</p>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Hps-analysis <hps-analysis-bounces@jlab.org> on behalf of Bradley T Yale <btu29@wildcats.unh.edu><br>
<b>Sent:</b> Friday, April 15, 2016 3:33 PM<br>
<b>To:</b> hps-analysis@jlab.org; Valery Kubarovsky<br>
<b>Subject:</b> [Hps-analysis] Moller Gap Update</font>
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<p>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:</p>
<p>Not the generator. Pure geometric acceptance.<br>
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<p>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.</p>
<p>This is using the old generator by the way.<br>
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<p>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.</p>
<p>Notice where they land on the ECal.</p>
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<p>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...</p>
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<p>-Brad<br>
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