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Hi,</div>
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I was able to get the RICH S1 system back up and running with the exception of the gas system items, they are all still reading as zero since the cRIO instrumentation reading that is not responding correctly.<br>
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I am 100% confident RICH S1 is still getting airflow and nitrogen purge since RICH S4 is still getting airflow and N2 flow and the local read out on the gas panels for S1 shows it is getting the expected flow.</div>
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If we need to get back up and running sooner rather than later, we could temporarily disable RICH S1 airflow and air pressure interlocks since the temperatures are stable and S4 is getting flow. If we'd want at least some sort of readout for the S1 airflows,
we could put a webcam in front of the gas panel to see the local read out.</div>
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<span style="font-size:12pt" class="ContentPasted0">There's a few things I can try if the hall will stay in controlled access longer, but I need to go get some things from the EEL.</span><br>
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My plan is to go collect the things that might fix the present issue of the readout instrumentation not responding and then return to the hall and keep working for as long as we'll be in controlled access.</div>
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<br>
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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> Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Thursday, October 13, 2022 8:15 AM<br>
<b>To:</b> Nathan Baltzell <baltzell@jlab.org>; Brian Eng <beng@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Subject:</b> Re: [New Logentry] RICH air flow/pressure issues</font>
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So it looks like the S1 controller is now having an issue coming back online...</div>
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>From logbook entries, it looks like beam is not going to the hall still from magnet issues and the hall is in controlled access.</div>
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I will go in to investigate in person. I should get there around 9:00.</div>
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-Tyler<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Thursday, October 13, 2022 8:01 AM<br>
<b>To:</b> Nathan Baltzell <baltzell@jlab.org>; Brian Eng <beng@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Subject:</b> Re: [New Logentry] RICH air flow/pressure issues</font>
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Hi Nathan,</div>
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I can see that there's still airflow to RICH S4 and that the temperatures in RICH S1 are stable, so the detector is still getting air flow.</div>
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It looks like there's a time out error in the cRIO that reads those value.</div>
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Since I can see that the interlock is still tripped for S1 HV and LV, I'm going to go ahead and remotely reboot the system to see if it comes back.</div>
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<br>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
-Tyler<br>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> baltzell@jlab.org <baltzell@jlab.org><br>
<b>Sent:</b> Thursday, October 13, 2022 7:25 AM<br>
<b>To:</b> Brian Eng <beng@jlab.org>; Tyler Lemon <tlemon@jlab.org>; Valery Kubarovsky <vpk@jlab.org><br>
<b>Subject:</b> [New Logentry] RICH air flow/pressure issues</font>
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<h1 class="x_x_x_node-title"><a href="https://logbooks.jlab.org/entry/4057163" rel="bookmark">RICH air flow/pressure issues</a>
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<li><a href="https://logbooks.jlab.org/entry/4057163/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4057163/delete?destination=email/send">Delete</a></li></ul>
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<p class="x_x_x_author-datetime">Lognumber <a href="https://logbooks.jlab.org/entry/4057163" class="x_x_x_lognumber" data-lognumber="4057163">
4057163</a>. Submitted by <a href="https://logbooks.jlab.org/user/baltzell">baltzell</a> on
<time datetime="2022-10-13T07:22:53-0400"><a href="https://logbooks.jlab.org/entries?start_date=1665656573&end_date=1665663773&book=HBLOG&book=RICH">Thu, 10/13/2022 - 07:22</a></time>.
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<th>Logbooks: </th>
<td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a> <a href="https://logbooks.jlab.org/book/rich">
RICH</a></td>
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<div class="x_x_x_logentry x_x_x_node-content">
<p>RICH2 air pressure/flow dropped to zero. Contacting experts.</p>
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<div class="x_x_x_image-wrapper"><img class="x_x_x_image-style-plentybig" width="960" height="863" alt="" src="https://logbooks.jlab.org/files/styles/plentybig/public/2022/10/4057163/Screen Shot 2022-10-13 at 7.21.20 AM.png"></div>
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