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Hi Marco,</div>
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Is there a set schedule for the tests where the compressor is needed? We can plan to have the compressor turned back on in time for that if there is.<br>
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Looking at the archived compressor data since it has been turned on and running steadily, we can see that the compressor is not doing its typical "saw-tooth" pattern that we saw this past April. All other cooling parameters are similar to previous experimental
runs.</div>
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Attached are plots of archived data: one from the past ~24 hours, and one from about one year ago in September 2018. The one from September 2018 shows the typical "saw-tooth" pattern we expect, but the one from the past 24 hours does not.</div>
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The only difference between the two plots is the ambient pressure is higher (411 inches-H2O vs 408 inches-H2O) in the one from September 2018, but I am unsure if this is a big enough difference to cause the saw-tooth pattern to not occur.</div>
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Best regards,</div>
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Tyler<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Tuesday, October 8, 2019 12:04 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> dsg-rich@jlab.org <dsg-rich@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: [Dsg-rich] [New Logentry] RICH compressor ON after maintenance</font>
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<div class="PlainText">Hi Tyler,<br>
I completed this first test on the RICH (elog <br>
<a href="https://logbooks.jlab.org/entry/3733786">https://logbooks.jlab.org/entry/3733786</a>) and the detector is now off.<br>
I would ask you to turn the compressor also off, unless you need to make <br>
some further test.<br>
The compressor on and electronics off is a condition we want to avoid, <br>
because it generates an increase of the humidity inside the RICH.<br>
Thank you,<br>
Marco<br>
<br>
<br>
Il 2019-10-07 20:20 tlemon@jlab.org ha scritto:<br>
> RICH COMPRESSOR ON AFTER MAINTENANCE [1]<br>
> <br>
> * Edit [2]<br>
> * Delete [3]<br>
> <br>
> Lognumber 3733741 [1]. Submitted by tlemon [4] on Mon, 10/07/2019 -<br>
> 14:16 [5].<br>
> <br>
> LOGBOOKS:<br>
> RICH [6]<br>
> <br>
> ENTRY MAKERS:<br>
> ambrown, campero, mealer<br>
> <br>
> The compressor in the RICH air-cooling system has been turned on after<br>
> maintenance on and replacement of the buffer tank PT.<br>
> <br>
> All compressor settings are the same as during the spring physics run:<br>
> Compressor internal on-off settings: on at 104 psi; off at 113 psi<br>
> (highest output range allowable on compressor)<br>
> Airflow 1: 500 slm<br>
> Airflow 2: 400 slm<br>
> <br>
> The new PT installed on the buffer tank appears to match the pressure<br>
> indicated by the buffer tank's local pressure gauge. Because of this,<br>
> the PT reading may be a little different than before.<br>
> <br>
> Since the cooling system is back online, RICH electronics can now be<br>
> powered.<br>
> <br>
> <br>
> Links:<br>
> ------<br>
> [1] <a href="https://logbooks.jlab.org/entry/3733741">https://logbooks.jlab.org/entry/3733741</a><br>
> [2] <a href="https://logbooks.jlab.org/entry/3733741/edit?destination=email/send">
https://logbooks.jlab.org/entry/3733741/edit?destination=email/send</a><br>
> [3] <br>
> <a href="https://logbooks.jlab.org/entry/3733741/delete?destination=email/send">
https://logbooks.jlab.org/entry/3733741/delete?destination=email/send</a><br>
> [4] <a href="https://logbooks.jlab.org/user/tlemon">https://logbooks.jlab.org/user/tlemon</a><br>
> [5]<br>
> <a href="https://logbooks.jlab.org/entries?start_date=1570468581&end_date=1570475781&book=RICH">
https://logbooks.jlab.org/entries?start_date=1570468581&end_date=1570475781&book=RICH</a><br>
> [6] <a href="https://logbooks.jlab.org/book/rich">https://logbooks.jlab.org/book/rich</a><br>
> <br>
> _______________________________________________<br>
> Dsg-rich mailing list<br>
> Dsg-rich@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/dsg-rich">https://mailman.jlab.org/mailman/listinfo/dsg-rich</a><br>
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