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Hi Albert,</div>
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<br>
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The heaters are only on the front flanges and aluminum bars.</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);" class="elementToProof">
Marc<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> shahinya@jlab.org <shahinya@jlab.org><br>
<b>Sent:</b> Monday, September 11, 2023 8:27 PM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> dsg-halla_ecal@jlab.org <dsg-halla_ecal@jlab.org><br>
<b>Subject:</b> Re: [Dsg-halla_ecal] Controls installation in Hall A</font>
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<div class="PlainText">Hi Marc and Don,<br>
<br>
Tell me, please, do you control the temperature on the Light Guide?<br>
<br>
Thank you,<br>
Albert<br>
<br>
> Hi Don,<br>
> on the<br>
> Here is the current update. I have completed the following:<br>
><br>
><br>
> 1. Verified the controls are working with a low temperature test. All 5<br>
> control channels are operating as expected.<br>
> 2. Tested the Omega and power kill switch.<br>
> 3. Added the 4 thermocouples to the monitoring. Now all 6 supermodule<br>
> have a readback of the crystal surface.<br>
> * They are connected in the order we discussed in the hall.<br>
><br>
> Whats left to do:<br>
><br>
><br>
> 1. Lower the controls into the bunker and a quick check to see its all<br>
> still connected.<br>
> 2. I have verified that I can monitor the system while on the hall A<br>
> development subnet. But we still don't have a computer on the subnet. So<br>
> we cannot remotely monitor from off-site...We have two CC requests in<br>
> for support on this.<br>
> 3. I need to move the relay box down in the bunker from the top of the<br>
> teststand. This is less critical, but if we don't move it the hall<br>
> effect sensors may not survive the beam. These are not required for the<br>
> system to run, but it is more information.<br>
><br>
> I'll be in early to work on items 1 and 3. You can close up the teststand.<br>
><br>
> Regards,<br>
> Marc<br>
><br>
><br>
><br>
> ________________________________<br>
> From: Marc Mcmullen<br>
> Sent: Friday, September 8, 2023 6:15 PM<br>
> To: dsg-halla_ecal@jlab.org <dsg-halla_ecal@jlab.org><br>
> Subject: Controls installation in Hall A<br>
><br>
> Hi Mark, Bogdan, and Don,<br>
><br>
> The ECAL heater controls equipment for the six-supermodule teststand has<br>
> been moved to Hall A.<br>
><br>
> A network cable has been connected to the cRIO and I have verified that I<br>
> can remotely ping it. I still need to connect remotely from the DSG hall A<br>
> computer to make sure I can monitor and control the system remotely.<br>
> Meanwhile, I have connected locally in order to continue the installation.<br>
><br>
> I have verified that the controls software is reading the connected<br>
> temperature sensors used to control the five power supplies.<br>
><br>
> In addition to installing the equipment, I have installed a local power<br>
> kill button which is part of the safety controls. When pressed it will<br>
> remove coil power from the relays in the relay box, which will open the<br>
> contacts which supply power to all heaters. The power kill button is in<br>
> series with the Omega process controller. The power kill button will lock<br>
> in the safe position when pressed and has to be rotated to return to the<br>
> unpressed position.<br>
><br>
> Monday I will continue the installation. The following tasks still need to<br>
> be completed.<br>
><br>
><br>
> 1. Connect the control voltage cable from the cRIO to the power supply<br>
> disconnect box and test<br>
> 2. Test the safety controls<br>
> 3. Perform a low temperature system test<br>
> 4. Lower system into the radiation bunker<br>
><br>
> After the system has been fully tested I will set a meeting to go over the<br>
> test setup.<br>
><br>
> Marc<br>
><br>
> _______________________________________________<br>
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> Dsg-halla_ecal@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/dsg-halla_ecal">https://mailman.jlab.org/mailman/listinfo/dsg-halla_ecal</a><br>
><br>
<br>
<br>
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