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Colleagues,<br>
<br>
Please find the minutes below and at<br>
<br>
<a class="moz-txt-link-freetext" href="https://halldweb1.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_September_29,_2014">https://halldweb1.jlab.org/wiki/index.php/GlueX_Start_Counter_Meeting,_September_29,_2014</a>
.<br>
<br>
-- Mark<br>
_____________________________________________________<br>
<br>
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<h1 id="firstHeading" class="firstHeading">GlueX Start Counter
Meeting, September 29, 2014<span class="mw-headline"
id="Minutes"> Minutes</span>
</h1>
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<p>Present:
</p>
<ul>
<li> <b>FIU</b>: Werner Boeglin
</li>
<li> <b>JLab</b>: Mark Ito, Eric Pooser
</li>
</ul>
<h2> <span class="mw-headline" id="Work_Planning">Work
Planning</span></h2>
<p>We meet briefly to review the next set of near term
tasks. We discussed the following tasks:
</p>
<ol>
<li> Read out discriminator scalers
</li>
<li> Establish FADC-250 read-out
</li>
<li> Establish F1-TDC read-out
</li>
<li> Read out the start counter with the CDC-cosmic
trigger (i. e., trigger on scintillators above and below
the magnet)
</li>
<li> Read out the start counter with a
start-counter-energy trigger
</li>
<li> Read out the start counter as part of the global
cosmic trigger
</li>
<li> Write the online monitoring plug-in
</li>
</ol>
<h3> <span class="mw-headline"
id="Read_out_discriminator_scalers">Read out
discriminator scalers</span></h3>
<p>Done.
</p>
<p>Although the presentation could be fancier, we can
display 30 scalar rates to shift-takers.
</p>
<h3> <span class="mw-headline" id="Establish_FADC_read-out">Establish
FADC read-out</span></h3>
<p>Clock trigger data has already been read out. Eric has
gone through the exercise of setting pedestal levels. What
remains is to see data with pulses. For this we need a
trigger (see below).
</p>
<h3> <span class="mw-headline" id="Establish_TDC_read-out">Establish
TDC read-out</span></h3>
<p>Not done at any level. This will also require a trigger.
</p>
<h3> <span class="mw-headline"
id="Read_out_the_start_counter_with_the_CDC-cosmic_trigger">Read
out the start counter with the CDC-cosmic trigger</span></h3>
<p>We will contact Beni to ask whether this can be done and
how much work is involved.
</p>
<h3> <span class="mw-headline"
id="Read_out_the_start_counter_with_a_start-counter-energy_trigger">Read
out the start counter with a start-counter-energy
trigger</span></h3>
<p>This requires work from Sascha. We wait for his return.
Eric will contact him about this.
</p>
<h3> <span class="mw-headline"
id="Read_out_the_start_counter_as_part_of_the_global_cosmic_trigger">Read
out the start counter as part of the global cosmic
trigger</span></h3>
<p>This was a suggestion from Beni. We will follow up with
him about what is involved.
</p>
<h3> <span class="mw-headline"
id="Write_the_online_monitoring_plug-in">Write the
online monitoring plug-in</span></h3>
<p>This is not a front-burner issue given where we are, but
can be pursued as a filler task as we wait for service
from the experts.
</p>
<h2> <span class="mw-headline" id="Collaboration_Meeting">Collaboration
Meeting</span></h2>
<p>Eric will show Mark his presentation and get suggestions.
</p>
<h2> <span class="mw-headline"
id="Future_Start_Counter_Meetings">Future Start Counter
Meetings</span></h2>
<p>Werner raised the issue of how we structure meetings in
the future. We decided to table this issue until after the
start of commissioning.
</p>
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<pre class="moz-signature" cols="72">--
Mark M. Ito, Jefferson Lab, <a class="moz-txt-link-abbreviated" href="mailto:marki@jlab.org">marki@jlab.org</a>, (757)269-5295
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