<div dir='auto'><div>FEUs and fans are turnoff safely. Brian, you can upgrade firmware. <br><div class="gmail_extra"><br><div class="gmail_quote">On Jul 24, 2020 10:01, Sebastian Kuhn <kuhn@jlab.org> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">
I would propose the following: For the duration of the upgrade, we should reduce the gas flow to the RTPC to a minimal 30 sccm, HV off, and of course FEUs and their cooling fans safely powered off. It would be important that someone (Jiwan) can be there to
restart everything (at the least those blowers) after the upgrade. So I would suggest Brian coordinates with Jiwan and get this done soon.
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<div>- Sebastian<br>
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<div>On Jul 24, 2020, at 9:50 AM, Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:</div>
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Let me know when everything is sorted, again because I've never upgraded this piece of equipment this might all be for nothing and power stays on the entire time, but better safe than sorry.</div>
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<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>>
on behalf of Yuri Gotra <<a href="mailto:gotra@jlab.org">gotra@jlab.org</a>><br>
<b>Sent:</b> Friday, July 24, 2020 9:47 AM<br>
<b>To:</b> Jiwan Poudel <<a href="mailto:jpoudel@jlab.org">jpoudel@jlab.org</a>>; <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Cc:</b> Bob Miller <<a href="mailto:rmiller@jlab.org">rmiller@jlab.org</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] RTPC crates</font>
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<div style="margin-top:0px;margin-bottom:0px">If the fan needs to be on all the time, it can be plugged to the wall outlet.<br>
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<div>On 7/24/20 9:43 AM, Jiwan Poudel wrote:<br>
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<blockquote>I can safely turn off FEUs voltages and FEU fans used for the RTPC and FMT.
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<div>There is another fan used to suction out the Helium leaked out of RTPC. As long as the RTPC is outside the solenoid, I think there is no issue to turn off that fan. But when the RTPC is inside the solenoid, either Bob or Sebastian could answer
what can we do.<br>
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<div>On Jul 24, 2020, at 9:33 AM, Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:</div>
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I've never done the firmware on this piece of equipment so honestly I have no idea.</div>
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<div dir="ltr"><font face="Calibri,
sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>>
on behalf of Jiwan Poudel <<a href="mailto:jpoudel@jlab.org">jpoudel@jlab.org</a>><br>
<b>Sent:</b> Friday, July 24, 2020 9:24 AM<br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] RTPC crates</font>
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<div style="word-wrap:break-word">Hello Brian,
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<div>How long does it take to have firmware update? Can you please give me an estimate? I am at hall so that I could power off everything safely.</div>
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<div>Thank you,</div>
<div>Jiwan<br>
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<div>On Jul 23, 2020, at 5:14 PM, Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:</div>
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Yes, the CVT insertion cart.</div>
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Previously it housed only SVT stuff: <a href="https://www.jlab.org/div_dept/physics_division/dsg/album/HALL%20B%20SVT/Installation%20for%20noise%20test%20in%20Hall%20B/SVT%20electronics%20rack%20structure%20relocated%20in%20Hall%20B.jpg" style="font-family:'calibri' , 'arial' , 'helvetica' , sans-serif;font-size:12pt">https://www.jlab.org/div_dept/physics_division/dsg/album/HALL%20B%20SVT/Installation%20for%20noise%20test%20in%20Hall%20B/SVT%20electronics%20rack%20structure%20relocated%20in%20Hall%20B.jpg</a></div>
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<img src="https://www.jlab.org/div_dept/physics_division/dsg/album/HALL%20B%20SVT/Installation%20for%20noise%20test%20in%20Hall%20B/SVT%20electronics%20rack%20structure%20relocated%20in%20Hall%20B.jpg" style="max-width:100%"></div>
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It has since been modified (top half removed) and now houses MVT stuff as well, I guess that's when it got renamed.</div>
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Let me know once everything has been put into a safe state.</div>
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<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> dsg-hallb_rtpc <<a href="mailto:dsg-hallb_rtpc-bounces@jlab.org">dsg-hallb_rtpc-bounces@jlab.org</a>>
on behalf of Sebastian Kuhn <<a href="mailto:kuhn@jlab.org">kuhn@jlab.org</a>><br>
<b>Sent:</b> Thursday, July 23, 2020 5:07 PM<br>
<b>To:</b> <a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a> <<a href="mailto:dsg-hallb_rtpc@jlab.org">dsg-hallb_rtpc@jlab.org</a>><br>
<b>Cc:</b> Mohammad Hattawy <<a href="mailto:mohammad.hattawy@gmail.com">mohammad.hattawy@gmail.com</a>><br>
<b>Subject:</b> Re: [dsg-hallb_rtpc] RTPC crates</font>
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<div style="word-wrap:break-word">Sorry for the cross chatter - when you say “SVT cart”, do you mean the CVT insertion cart? As Jiwan points out, there are FEU LV and cooling fan supplies, among other things, on the
latter. We may have to power down the FEUs safely.<br>
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<div>On Jul 23, 2020, at 3:39 PM, Brian Eng <<a href="mailto:beng@jlab.org">beng@jlab.org</a>> wrote:</div>
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Hi Mohammad,</div>
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Is the RPTC using anything on the SVT cart that requires AC power?</div>
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The remote power strip has a vulnerability that requires a firmware upgrade to fix and I'm not sure if applying this will cause any power loss.</div>
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So obviously we'd want to do this when nothing is being actively used.</div>
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Thanks</div>
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Brian</div>
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