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Hi Chris,</div>
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I just spoke to Marco Mirazita in the counting house about that.</div>
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Those interlocks have now been re-enabled, so if either air flow or the pressyre goes away, it will shut down the detector.</div>
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Thanks for your help yesterday!</div>
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-Tyler</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Christopher Dilks <dilks@jlab.org><br>
<b>Sent:</b> Friday, June 6, 2025 5:19 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org>; tlemon--- via dsg-hallb_rich <dsg-hallb_rich@jlab.org>; Valery Kubarovsky <vpk@jlab.org>; mirazita@jlab.org <mirazita@jlab.org><br>
<b>Subject:</b> Re: RICH S1 update: gas system and EPICS back, but no T or H due to internal power supply failure</font>
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Hi Tyler,</div>
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Thank you very much!</div>
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<div style="display:inline; color:rgb(50,49,48)">Tyler Lemon</div>
<div style="display:inline; padding-left:10px; color:rgb(96,94,92)">6/6/2025 17:08</div>
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The RICH S1 EPICS, air flows, air pressure, and nitrogen flow are back working. They should be viewable in EPICS.</td>
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Should we re-enable the interlocks (Air Flow 1, Air Flow 2, Air Pressure 1)?</div>
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Cheers,</div>
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Chris</div>
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<p style="margin-top:0px; margin-bottom:0px; font-family:Aptos"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)">Christopher Dilks</span></p>
<p style="margin-top:0px; margin-bottom:0px; font-family:Aptos"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)">Jefferson Lab Staff Scientist</span></p>
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<p style="margin-top:0px; margin-bottom:0px; font-family:Aptos"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)">Phone: 757-269-7750</span></p>
<p style="margin-top:0px; margin-bottom:0px; font-family:Aptos"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:10pt; color:rgb(0,0,0)">Email: dilks@jlab.org</span></p>
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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> Friday, June 6, 2025 17:08<br>
<b>To:</b> tlemon--- via dsg-hallb_rich <dsg-hallb_rich@jlab.org>; Valery Kubarovsky <vpk@jlab.org>; Christopher Dilks <dilks@jlab.org>; mirazita@jlab.org <mirazita@jlab.org><br>
<b>Subject:</b> RICH S1 update: gas system and EPICS back, but no T or H due to internal power supply failure</font>
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<b>Hello everyone</b>,</div>
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<b>A bit of good news but then more bad. Sorry for the long email, the main points are in bold.</b></div>
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<b>Bit of Good:</b></div>
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<b>The RICH S1 EPICS, air flows, air pressure, and nitrogen flow are back working. They should be viewable in EPICS.</b></div>
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<b>More Bad:</b></div>
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<b>The sbRIO controller that reads the digital temperature and humidity sensors has an internal 3.3 V power supply failure.</b></div>
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This status can be seen in the LabVIEW expert screen or with the LabVIEW network shared variable "\\rich2sbrio\network-shared-variables\sbrio-3v3-okay".</div>
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<b>The temperature and humidity sensors cannot be read with this failure, so all temperatures are -45 C and all humidity readings are 0%.</b></div>
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<b>The solution is a swapping the hardware controller.</b></div>
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Things were working around 2pm, so I think the 3.3V power supply failure on the controller is more bad luck and an unfortunate coincidence.</div>
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<b>It looks like next Wednesday June 11 is a maintenance day. I'll be ready then to swap the sbRIO.</b></div>
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<b>If something happens and the hall is open Monday or Tuesday, I'll take that opportunity to swap things sooner.</b></div>
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Lastly, I can provide more details if needed.</div>
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Email is preferred, but my cell is 757-768-5316 just in case.</div>
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If I'm not able to answer the phone in time, please leave a message or text me and I'll call back.</div>
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I don't think there is much else I can do today, especially since the hall is closed for beam, so I will be headed home shortly since I've been here since 8AM.</div>
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<b>-Tyler</b></div>
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PS:</div>
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If anyone else in DSG wants to give it a try, the latest version of the program is at the path below and uses LabVIEW 2020 (I've been using the PC dsgcontrols2 but the PC dsgcontrols1 also has it).</div>
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O:\DSG_Slow_Controls\RICH-Hardware-Interlock-System\2025-06-06_RICH_S1</div>
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