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<div class="moz-cite-prefix">Hi, <br>
<br>
I pasted the minutes from the HPS controls meeting held on October
29 <br>
to this message. They are also at the meeting page on confluence:
<br>
<br>
<a class="moz-txt-link-freetext" href="https://confluence.slac.stanford.edu/display/hpsg/2013.10.29+Biweekly">https://confluence.slac.stanford.edu/display/hpsg/2013.10.29+Biweekly</a><br>
<br>
Hovanes. <br>
<br>
<br>
<h2 id="id-2013.10.29Biweekly-Minutes">Minutes</h2>
<p>Present at JLab: Neres, Stepan, Krister, Bryan, F.-X., Ken,
Hovanes</p>
<p>Present at SLAC: Pelle</p>
<h6 id="id-2013.10.29Biweekly-SVTInterlock">SVT Interlock</h6>
<p>Hovanes discussed his proposal for hardware the SVT
interlocks:</p>
<ul>
<li>The overall cost is expected to be on the order of $6K. In
addition, we can expand it to include 3 more thermocouple
input modules.</li>
<li>According to the Andreas Rubin from Wiener, the old
controllers for MPOD with LEMO connectors do not have the
circuitry wired. We need to buy new controllers to have the
controller-wise interlocks.</li>
<li>Pelle suggested to go with the controller fast-shutdown
signal to turn of all the channels on the chassis. Only one
MPOD chassis will be required y SVT, and ECAL LV will not be
served from the same chassis.</li>
<li>F.-X. suggested to use fast shutdown (FSD) signal from the
accelerator to turn off the power supplies, but not the
chiller. The idea was supported by the overwhelming majority. </li>
</ul>
<h6 id="id-2013.10.29Biweekly-Beamline">Beamline</h6>
<p>Krister did not have time to work on HPS controls, busy with
the superconducting magnets for CLAS12. No progress with the
magnet controls. Hovanes agreed to send Krister a time-ordered
list of tasks for HPS controls that Krister needs to work on.</p>
<p>Sergey needs to know the list of the IOCs and the type of the
controllers to be installed in Hall B for HPS slow controls.</p>
<p>We need to connect the Frascati magnet on the space frame to
mini-T power supply soon to ramp it up to 1050 Amps and to
measure the field. No EPICS controls are needed.</p>
<p> </p>
<h6
id="id-2013.10.29Biweekly-ECALlightmonitoringsystemandECALvoltageGUIs">ECAL
light monitoring system and ECAL voltage GUIs</h6>
<p>Ken Livingston from Glasgow told us the the control modules for
the HPS ECAL and CLAS12 forward tagger calorimeter are
identical. Therefore, Glasgow will provide the EPICS support for
the ECAL monitoring system.</p>
<p>Bryan McKinnon from Glasgow will work on the ECAL and SVT
voltage GUIs in EPICS. The preliminary plan is to create one
main voltage GUI for ECAL and SVT, and then use CLAS scripts and
programs to generate the detailed GUIs displaying the voltage
parameters. </p>
<p>Stepan will send Hovanes, Nerses and F.-X. an Excel spreadsheet
with the new HV grouping for ECAL.</p>
<p>The location of the CAEN SY1527 crate used for CLAS DVCS is not
known. Sergey probably knows the location of the crate.</p>
<p> </p>
<p> </p>
<p> </p>
<br>
<br>
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