<div dir="ltr">Hi Kondo,<div><br></div><div>The UV layer does not have a mapping problem. It is an exact copy of the mapping from BB, which is proven to be correct. I believe the pattern and all the hits outside the active area are just noisy strips that cause bad 2D correlations, since this is a low level analysis and does not have tracking to check that hits are true. Also notably, I just realized this is an old version that accepts 1 strip clusters, which certainly also contributes a lot to the noise that we see. It may be worth it to rerun with 2 hit minimum clusters.</div><div><br></div><div>For the UV data, I see there are some strips missing, and an entire APV on the right most side. I looked at the GEM yesterday and did not see anything disconnected, and also the raw APV data did not show me that the APV was bad. So I am not sure if it is possible to fix all these missing strips. If we have time I can try replacing some APVs, but it will likely end up being more work than it is worth. Also I will note that the large missing area from one APV on the right side correspond to the top of the GEM, and would therefore be outside of the production cross section anyway.</div><div><br></div><div>Best,</div><div>Sean</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 5, 2021 at 1:26 PM Gnanvo, Kondo (kg6cq) <<a href="mailto:kg6cq@virginia.edu">kg6cq@virginia.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Hi Zeke, <u></u><u></u></p>
<p class="MsoNormal">I don’t think it is a big deal. Sean or John will probably fix it quickly
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<p class="MsoNormal">Thanks <u></u><u></u></p>
<p class="MsoNormal">Kondo<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><b>From:</b> Ezekiel Wertz <<a href="mailto:ewertz@email.wm.edu" target="_blank">ewertz@email.wm.edu</a>> <br>
<b>Sent:</b> Friday, November 5, 2021 1:24 PM<br>
<b>To:</b> Gnanvo, Kondo (kg6cq) <<a href="mailto:kg6cq@virginia.edu" target="_blank">kg6cq@virginia.edu</a>><br>
<b>Cc:</b> <a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a><br>
<b>Subject:</b> Re: [Sbs_gems] [EXTERNAL] Fwd: Cosmic data for UV Layer and J1<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Hi Kondo,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I am not as familiar with the UV layer mapping. So I'll talk to Sean about this. I'll also do some comparison with the BB UV layer mappings.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Zeke<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Fri, Nov 5, 2021 at 1:19 PM Gnanvo, Kondo (kg6cq) <<a href="mailto:kg6cq@virginia.edu" target="_blank">kg6cq@virginia.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">Hi Zeke,
<u></u><u></u></p>
<p class="MsoNormal">That is great. Thanks for these first results.
<u></u><u></u></p>
<p class="MsoNormal">It looks to me that there is a mapping problem with the UV layer.
<u></u><u></u></p>
<p class="MsoNormal">Please have a look at the pattern of the 2D hit map. Just a minor issue
<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Best regards
<u></u><u></u></p>
<p class="MsoNormal">Kondo<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><b>From:</b> Sbs_gems <<a href="mailto:sbs_gems-bounces@jlab.org" target="_blank">sbs_gems-bounces@jlab.org</a>>
<b>On Behalf Of </b>Ezekiel Wertz<br>
<b>Sent:</b> Friday, November 5, 2021 1:11 PM<br>
<b>To:</b> <a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a><br>
<b>Subject:</b> [Sbs_gems] [EXTERNAL] Fwd: Cosmic data for UV Layer and J1<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt"> <u></u><u></u></p>
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<p class="MsoNormal">---------- Forwarded message ---------<br>
From: <b>Ezekiel Wertz</b> <<a href="mailto:ewertz@email.wm.edu" target="_blank">ewertz@email.wm.edu</a>><br>
Date: Fri, Nov 5, 2021 at 11:47 AM<br>
Subject: Cosmic data for UV Layer and J1<br>
To: <<a href="mailto:sbs_gem@jlab.org" target="_blank">sbs_gem@jlab.org</a>><u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt"> <u></u><u></u></p>
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<p class="MsoNormal">Hi GEM folks,<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Attached you will find cosmic data and plots for the UV layer and J1. Taking cosmic data on the UV layer was priority, but we managed to get INFN J1 running as well. We took this
data earlier this week. There were about 500,000 events.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Other than a few strips that look not great, it looks like the UV layer is performing fairly well. Maybe Sean, Anu, or John has more to say about that.
<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">In regards to J1, each module on this layer has 2 shorted sectors. Which we see fairly clearly. However, there is a missing APV on the middle module. This was disabled because of
connection problems that have since been better understood. The top module has a partial or almost missing APV, this connection has since been remedied but needs to be checked. So this APV on the middle module is the last major thing that needs to be resolved
for J1. There are some strips on the top and middle module that are partial and it needs to be understood if those are bad strips or partially disconnected APVs.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">So again the main result for this is the UV layer. But this is also a good starting place for J1. Also take note that the empty plots are simply because this plotting macro was
not adjusted for 2 layers instead of 5.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">Best,<u></u><u></u></p>
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<p class="MsoNormal">Zeke<u></u><u></u></p>
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