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<p>Forgot to flip the page on my notebook. A couple more items added
to the minutes on the wiki and reproduced below.<br>
</p>
______________________<br>
<h3><span class="mw-headline"
id="Simulation_with_Conditions_Changing_Run-by-Run">Simulation
with Conditions Changing Run-by-Run</span></h3>
<p>Eugene asked about an issue that came up in another meeting. If
detector conditions, for example dead channels, are changing from
run to run, are we able to reflect that accurately in the
simulation. There are likely correlations that make an "average
efficiency" calculation with an "average detector" inaccurate.
Thomas remarked that MCwrapper has a mechanism to simulate events
with a population of events, generated with different
configurations in proportion to that in the real data, using the
CCDB's "mc" variation to supply the run-by-run conditions. Mark
also mentioned that we first did this with the simX.X runs in the
past.
</p>
<h3><span class="mw-headline"
id="TOF_Anomaly_in_Monitoring_Histograms">TOF Anomaly in
Monitoring Histograms</span></h3>
<p>Beni reported a feature in the Plot Browser histograms for Spring
2017, in the :Recon. TOF 2" section. For Monitoring Launch
versions 19 and above, there are no TOF identified protons below
1.0 GeV/c. He cannot reproduce the effect in his own code. Alex A.
told us that this feature is not there with Simon's new track
matching code. There is a problem, however, since the last
reconstruction launch was done with the old track matching. This
problem is likely present in the resulting REST files.
</p>
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<div class="moz-cite-prefix">On 01/26/2018 03:26 PM, Mark Ito wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1ba2ea7b-5385-7ca6-11a6-6148f678ba39@jlab.org">
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<p>Folks,</p>
<p>Please find the minutes below and at</p>
<p>
<a class="moz-txt-link-freetext"
href="https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_January_26,_2018#Minutes"
moz-do-not-send="true">https://halldweb.jlab.org/wiki/index.php/GlueX_Offline_Meeting,_January_26,_2018#Minutes</a></p>
<p> -- Mark</p>
<p>__________</p>
<p> </p>
</blockquote>
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