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</style><article id="node-738827" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3665911" rel="bookmark">Trigger studies</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3665911/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3665911/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3665911" class="lognumber" data-lognumber="3665911">3665911</a>. Submitted by <a href="https://logbooks.jlab.org/user/somov">somov</a> on <time datetime="2019-03-10T23:44:54-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1552272294&end_date=1552279494&book=HDCCAL&book=HDLOG&book=HDTRIGGER">Sun, 03/10/2019 - 23:44</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2019-03-10T23:54:46-0400" pubdate="pubdate">Sun, 03/10/2019 - 23:54</time></p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hdccal">HDCCAL</a> <a href="https://logbooks.jlab.org/book/hdlog">HDLOG</a> <a href="https://logbooks.jlab.org/book/hdtrigger">HDTRIGGER</a></td></tr><tr><th>Entry Makers: </th><td>somov</td></tr></table></div>
<div class="logentry node-content">
<p>We have performed some minor adjustment of the PrimEx<br />
trigger (on Saturday), new features are listed below:</p>
<p>(new settings are effective starting from run 61462)</p>
<p>1. ) Several FCAL channels have been unmasked for the<br />
trigger (these channels have been repaired earlier).<br />
FCAL scalers corresponding to the PrimEx production<br />
beam condition are presented in Fig. 1. </p>
<p>There are four channels, which rate is about 30 kHz<br />
(slightly larger compared with adjacent modules), we<br />
decided to leave them unmasked.</p>
<p>After releasing masks, the trigger rate was increased by<br />
about 7%.</p>
<p>-----</p>
<p>2.) Two ancillary triggers were added to the main<br />
production configuration:</p>
<p> E_FCAL > 10750 (Bit 2)<br />
E_CCAL > 4778 (Bit 11) </p>
<p>We studied these trigger types separately before integrating<br />
them to the global configuration. Data were taken in a raw<br />
mode using different trigger types:</p>
<p>run 61450 - CCAL & FCAL trigger</p>
<p>run 61451 - E_FCAL > 10750 (bit 2)<br />
run 61452 - </p>
<p>run 61453 - E_CCAL > 4778 (bit 11)</p>
<p>run 61455 - CCAL & FCAL (bit 1), FCAL (bit 2), CCAL (bit 11) triggers<br />
run 61456<br />
run 61458</p>
<p>Fig. 2 shows energy deposition for different trigger bits<br />
for run 61458 (this is not the detailed trigger emulatuion)</p>
<p>Note, the FCAL and CCAL triggers are correlated with the main<br />
production trigger</p>
<p>Fig. 3 Trigger rates for production on the LHe target at 200 nA<br />
(~20 kHz main production, 5.5 kHz PS trigger).<br />
The typical live time > 99 %.</p>
<p>---------------</p>
<p>3.) CDC was included to the readout (run 61462).<br />
Reading out CDC crated for given production conditions<br />
does not contribute to the DAQ dead time (live time ~99.1 %)</p>
<p>We encountered problems with monitoring of high-level<br />
RootSpy histograms after adding the CDC; the CDC was temporary<br />
excluded from the readout configuration.</p>
</div>
<div class="attachment-box">
<div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2019/03/3665911/fcal_scalers.png" width="960" height="516" alt="" title="Fig. 1 FCAL scalers" /></div> <div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2019/03/3665911/production_fcal_ccal.png" width="798" height="674" alt="" title="Fig. 2 Energy deposition for different trigger bits (FCAL & CCAL trigger - bit1, FCAL - bit 2, CCAL - bit 11)" /></div> <div class="image-wrapper"><img view_mode="elog_email" class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2019/03/3665911/trig_new_prod.png" width="900" height="350" alt="" title="Fig. 3 Trigger rate for production on LHe target" /></div> </div>
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