<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
hi valery,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
bob has to be requested for the connection of compressor #2.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
so, i'm cc-ing this e-mail to bob.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
i suggest you discuss this matter directly with bob.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
i'll talk to tyler tomorrow.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
i guess he'd do what i'm doing, forward your e-mail to bob.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
wish you a nice evening</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
amrit<br>
</div>
<div>
<div id="appendonsend"></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Dsg-rich <dsg-rich-bounces@jlab.org> on behalf of Valery Kubarovsky <vpk@jlab.org><br>
<b>Sent:</b> Tuesday, October 8, 2019 5:03 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org>; Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Cc:</b> dsg-rich@jlab.org <dsg-rich@jlab.org><br>
<b>Subject:</b> Re: [Dsg-rich] [EXTERNAL] Re: [New Logentry] RICH compressor ON after maintenance</font>
<div> </div>
</div>
<div lang="EN-US">
<div class="x_WordSection1">
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
Hi Tyler,</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
We need to test the second compressor (N2) any way independently of the compressor N1 performance.</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
So, I suggest to connect the compressor N2 to the RICH detector.</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
Thanks,</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
Valery</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
<div style="border:none; border-top:solid #B5C4DF 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<b><span style="font-size:12.0pt; color:black">From: </span></b><span style="font-size:12.0pt; color:black">Tyler Lemon <tlemon@jlab.org><br>
<b>Date: </b>Tuesday, October 8, 2019 at 16:51<br>
<b>To: </b>Valery Kubarovsky <vpk@jlab.org>, Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Cc: </b>"dsg-rich@jlab.org" <dsg-rich@jlab.org>, Marco Contalbrigo <mcontalb@fe.infn.it>, Patrizia Rossi <rossi@jlab.org><br>
<b>Subject: </b>Re: [Dsg-rich] [EXTERNAL] Re: [New Logentry] RICH compressor ON after maintenance</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Hi Valery,</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">To establish a naming convention for the RICH compressors since there are two of them:</span></p>
</div>
<div>
<ul style="margin-bottom: 0in;" type="disc">
<li class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;color:black">
<span style="font-size:12.0pt">Compressor 1 is the compressor that has run in Hall B for previous experimental runs, was serviced recently by Hall B Engineering, and was turned on yesterday.</span></li></ul>
</div>
<div>
<ul style="margin-bottom: 0in;" type="disc">
<li class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;color:black">
<span style="font-size:12.0pt">Compressor 2 is the other compressor currently sitting unused and without power also on the top deck of the Forward Carriage.</span></li></ul>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">If you want to see how the Compressor 2 behaves, we can plan to switch to and test Compressor 2.</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">If after the switch to Compressor 2, we see the same behavior as in April 2018, it may mean that Compressor 1 needs to be serviced beyond what anyone other than Atlas Copco can do.
</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Considering this, it may be a good idea to plan to optimize the settings for Compressor 2 and also the air-cooling panel. Anything that can be done to limit the time the compressor is running or the number of times
it has to switch on or off will only serve to extend the life of the compressor.</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Best regards,</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Tyler</span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;text-align:center" align="center">
<hr width="98%" size="2" align="center">
</div>
<div id="x_divRplyFwdMsg">
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<b><span style="color:black">From:</span></b><span style="color:black"> Valery Kubarovsky <vpk@jlab.org><br>
<b>Sent:</b> Tuesday, October 8, 2019 4:23 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org>; Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Cc:</b> dsg-rich@jlab.org <dsg-rich@jlab.org>; Valery Kubarovsky <vpk@jlab.org>; Marco Contalbrigo <mcontalb@fe.infn.it>; Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> Re: [Dsg-rich] [EXTERNAL] Re: [New Logentry] RICH compressor ON after maintenance</span>
</p>
<div>
<p class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
</div>
</div>
<div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">Hi Tyler,</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt"> </span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">Please take a look to the attached report dated on April 11, 2019.</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">Page 2 presented the compressor performance from April 4, 2018 to April 10, 2019.</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">As you see, we noticed the significant degradation of it.</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">I hoped that the service that was done this year will improve the situation.</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">However, it looks like it did not. We may get a serious problem in the coming fall run.
</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">We can try another compressor to compare with the old one.</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt"> </span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">Regards,</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt">Valery</span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt"> </span></p>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:14.0pt"> </span></p>
<div style="border:none; border-top:solid #B5C4DF 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<b><span style="font-size:12.0pt; color:black">From: </span></b><span style="font-size:12.0pt; color:black">Dsg-rich <dsg-rich-bounces@jlab.org> on behalf of Tyler Lemon <tlemon@jlab.org><br>
<b>Date: </b>Tuesday, October 8, 2019 at 13:36<br>
<b>To: </b>Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Cc: </b>"dsg-rich@jlab.org" <dsg-rich@jlab.org><br>
<b>Subject: </b>Re: [Dsg-rich] [EXTERNAL] Re: [New Logentry] RICH compressor ON after maintenance</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
</div>
<div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Hi Marco,</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">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.</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">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.</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">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.</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">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.</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Best regards,</span></p>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black">Tyler</span></p>
</div>
</div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<span style="font-size:12.0pt; color:black"> </span></p>
</div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
<div class="x_MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;text-align:center" align="center">
<hr width="98%" size="2" align="center">
</div>
<div id="x_x_divRplyFwdMsg">
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
<b><span style="color:black">From:</span></b><span style="color:black"> 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</span>
</p>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
</p>
</div>
</div>
<div>
<div>
<p class="x_xmsonormal" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: "Calibri", sans-serif;">
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></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>