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great, thanks!</div>
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Bob.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Kevin Jordan <jordan@jlab.org><br>
<b>Sent:</b> Wednesday, January 5, 2022 9:53 AM<br>
<b>To:</b> isotope-prod@jlab.org <isotope-prod@jlab.org>; LCLS II @ LERF <lerftest@jlab.org>; Robert Rimmer <rarimmer@jlab.org>; Haipeng Wang <haipeng@jlab.org><br>
<b>Subject:</b> No 11:00 Meeting today</font>
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<p class="x_MsoNormal">The magnetron transmitter commissioning is going well;</p>
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<li class="x_MsoListParagraph" style="margin-left:0in">Amtek has been very helpful – they sent video of their test stand showing filament warmup & cooldown timing & have answered other interlock & timing questions</li><li class="x_MsoListParagraph" style="margin-left:0in">Temperature regulation PLC code is working well (chiller in Area 51 supplies ~10C water to transmitter heat exchanger & has bang-bang water flow solenoid control)</li><li class="x_MsoListParagraph" style="margin-left:0in">Solenoid magnet power supply is operational, the power supply is 4-20 mAmp control to 480 VAC phase angle so it is nonlinear (not simple current regulated PS), the readout has been calibrated with external
current meter & is spot on (nominal current is 5.7 Amps) </li></ul>
<p class="x_MsoListParagraph"> <a href="https://www.watlow.com/-/media/documents/user-manuals/din-c-rev-q.ashx">https://www.watlow.com/-/media/documents/user-manuals/din-c-rev-q.ashx</a></p>
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<li class="x_MsoListParagraph" style="margin-left:0in">Filament power supply is also phase angle controlled so I have been very careful with scaling (w/HV ON - 120 Amps on filament = zero power out, 80 Amps = full output power of 75 kWatts @915MHz) I programmed
interlock to ensure filament is at 120 Amps to permit HV to be energized. This will be cross checked & calibrated today as well</li><li class="x_MsoListParagraph" style="margin-left:0in">HV testing today with 480 VAC OFF (there are two remote operated 480 VAC breakers one for HV & the other for everything else) – I will test all interlocks & timings prior to actually putting HV on the tube</li><li class="x_MsoListParagraph" style="margin-left:0in">I plan to make RF tomorrow & snoop for any waveguide leakage (there are two waveguide pressure interlocks @1 PSI)</li><li class="x_MsoListParagraph" style="margin-left:0in">When commissioning is complete I will modify the “Commissioning OSP” to an “Operations OPS”</li></ul>
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<p class="x_MsoNormal">Best regards,</p>
<p class="x_MsoNormal">Kevin</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
Mail</a> for Windows</p>
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