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Hi All,</div>
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RICH detector HV and LV are OFF. Compressor is OFF. All alarms (including air flow and pressure) are OFF.</div>
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Heartbeat RICH sector 4 N2 is not alive.</div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">Thanks,</span><br>
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Valery</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of Nathan Baltzell via dsg-hallb_rich <dsg-hallb_rich@jlab.org><br>
<b>Sent:</b> Thursday, March 23, 2023 16:30<br>
<b>To:</b> Amrit Yegneswaran <yeg@jlab.org><br>
<b>Cc:</b> Sergey Boyarinov <boiarino@jlab.org>; dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_rich] Network switch “hallb-c3-4-sw” down?</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Hi Tyler,
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<div class="">The switch has been replaced, and it looks like the N2 cRio EPICS hearbeat is still not alive and so in alarm state.
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<div class="">-Nathan<br class="">
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<div class="">On Mar 23, 2023, at 9:49 AM, Amrit Yegneswaran <<a href="mailto:yeg@jlab.org" class="">yeg@jlab.org</a>> wrote:</div>
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thanks tyler and sergey</div>
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perhaps cc should put in a new switch and keep this switch as spare?<br class="">
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<font face="Calibri, sans-serif" class="" style="font-size:11pt"><b class="">From:</b><span class="x_Apple-converted-space"> </span>dsg-hallb_rich <<a href="mailto:dsg-hallb_rich-bounces@jlab.org" class="">dsg-hallb_rich-bounces@jlab.org</a>> on behalf of Sergey
Boyarinov via dsg-hallb_rich <<a href="mailto:dsg-hallb_rich@jlab.org" class="">dsg-hallb_rich@jlab.org</a>><br class="">
<b class="">Sent:</b><span class="x_Apple-converted-space"> </span>Thursday, March 23, 2023 8:53 AM<br class="">
<b class="">To:</b><span class="x_Apple-converted-space"> </span>Tyler Lemon <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>>; Nathan Baltzell <<a href="mailto:baltzell@jlab.org" class="">baltzell@jlab.org</a>><br class="">
<b class="">Cc:</b><span class="x_Apple-converted-space"> </span><a href="mailto:dsg-hallb_rich@jlab.org" class="">dsg-hallb_rich@jlab.org</a> <<a href="mailto:dsg-hallb_rich@jlab.org" class="">dsg-hallb_rich@jlab.org</a>><br class="">
<b class="">Subject:</b><span class="x_Apple-converted-space"> </span>Re: [dsg-hallb_rich] Network switch “hallb-c3-4-sw” down?</font>
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Computer center aware of the switch problem, I will follow up with repair.<br class="">
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<div id="x_x_divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" class="" style="font-size:11pt"><b class="">From:</b><span class="x_Apple-converted-space"> </span>Tyler Lemon <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>><br class="">
<b class="">Sent:</b><span class="x_Apple-converted-space"> </span>Thursday, March 23, 2023 8:51 AM<br class="">
<b class="">To:</b><span class="x_Apple-converted-space"> </span>Nathan Baltzell <<a href="mailto:baltzell@jlab.org" class="">baltzell@jlab.org</a>>; Sergey Boyarinov <<a href="mailto:boiarino@jlab.org" class="">boiarino@jlab.org</a>><br class="">
<b class="">Cc:</b><span class="x_Apple-converted-space"> </span><a href="mailto:dsg-hallb_rich@jlab.org" class="">dsg-hallb_rich@jlab.org</a> <<a href="mailto:dsg-hallb_rich@jlab.org" class="">dsg-hallb_rich@jlab.org</a>><br class="">
<b class="">Subject:</b><span class="x_Apple-converted-space"> </span>Network switch “hallb-c3-4-sw” down?</font>
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<div class="">Hi Nathan and Sergei,</div>
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<div dir="ltr" class="">I saw that all three RICH hardware interlock cRIOs had stopped communicating over the network around 4:30am. </div>
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<div dir="ltr" class="">Since all three went down at the same time, I suspected a power issue, but when I went down to the hall just now, all three were running fine. </div>
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<div dir="ltr" class="">I then noticed that network switch “hallb-c3-4-sw” that the three systems are connected to did not have any of its traffic indicator lights blinking. </div>
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<div dir="ltr" class="">Do you all know of any network outages or other issues with that switch?</div>
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<div dir="ltr" class="">Also, as an aside for RICH collaborators, both sectors are still getting 40 slm of nitrogen, so I am confident that the humidity in both sectors is still low despite not currently being able to remotely see the data. </div>
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<div dir="ltr" class="">-Tyler</div>
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