[Sbs_gems] [EXTERNAL] Fwd: Cosmic data for UV Layer and J1

[Ezekiel Wertz]

---------- Forwarded message ---------
From: Ezekiel Wertz <ewertz at email.wm.edu>
Date: Fri, Nov 5, 2021 at 11:47 AM
Subject: Cosmic data for UV Layer and J1
To: <sbs_gem at jlab.org>


Hi GEM folks,

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.

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.

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.

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.

Best,
Zeke
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