[Sbs_gems] [New Logentry] SBS GEM Latency Scan Results

[adr at jlab.org]

Logentry Text:
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We found that our guess value for global latency of "102" for SBS GEM latency is correct/very close.

Look at page 3, 3rd raw, 3rd and 4th plots in the attached files. These are max time sample histos for U/X and V/Y strips respectively, for events with track cuts.

At 102 latency -> https://logbooks.jlab.org/files/2022/10/4061348/summaryPlots_1998_sbs_gem.pdf
At 108 latency -> https://logbooks.jlab.org/files/2022/10/4061354/summaryPlots_1999_sbs_gem.pdf
At   96 latency -> https://logbooks.jlab.org/files/2022/10/4061357/summaryPlots_2000_sbs_gem.pdf

At 102 latency, we see a peak is at 5th time sample. At both 108 and and 96, we clearly don't see a distribution and suggests that the latency is off. 
We will ideally want to peak at the 4th time sample just like the BB GEMs. So we will decrease the latency by 1 unit and see. https://logbooks.jlab.org/entry/4061417

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