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</style><article id="node-410541" class="node node-logentry article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3337749" rel="bookmark">Trigger for production run</a>
</h1>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3337749" class="lognumber" data-lognumber="3337749">3337749</a>. Submitted by <a href="https://logbooks.jlab.org/user/somov">somov</a> on <time datetime="2015-05-02T02:44:38-0400" pubdate="pubdate">Sat, 05/02/2015 - 02:44</time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><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 are taking data with the main 'soft' production trigger for the pi0 calibration:<br />
BCAL / (0.25 GeV) + FCAL / (0.5 GeV) > 1 </p>
<p>There are some issues with the FCAL & BCAL trigger but they should not affect<br />
much collecting pi0 samples (we'll debug these problems after the beam test )</p>
<p>Currently, there are 4 triggers in the system:<br />
--------------------------------------------------------<br />
1. 10 FCAL + 3 BCAL > 18000 (mentioned above)<br />
2. FCAL > 1800<br />
3. BCAL > 6000<br />
4. PS </p>
<p>see rated on attached plot attached</p>
<p>The number of peaks in the FADC250 readout was changed to 3<br />
( the production config file is FCAL_BCAL_m7(8).conf )</p>
<p>Pi0 peaks look Ok for both read out modes 7 and 8</p>
<p>We take data with 2 converters: 75 um Be TPOL and the main 10^-3 PS<br />
The PS coincidence rate for 60 nA beam current and 10-4 radiator is about 500 Hz<br />
(TPOL converter contributes ~100 Hz)</p>
<p>The data size in mode 7 is dominated by TPOL fadcs<br />
(we have to read out TPOL fadcs in mode 8, pulses have positive polarity :) )</p>
</div>
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