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FYI<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Ed Daly <edaly@jlab.org><br>
<b>Sent:</b> Friday, March 5, 2021 3:42 PM<br>
<b>To:</b> Christine Fragapane <chummel@jlab.org><br>
<b>Subject:</b> Fw: PPU weekly update</font>
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Dear Christine,</div>
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Please forward to the PPU team.</div>
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Thanks,</div>
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Ed<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Galambos, John D. <galambosjd@ornl.gov><br>
<b>Sent:</b> Friday, March 5, 2021 2:34 PM<br>
<b>To:</b> PPU Staff <ppustaff@ornl.gov><br>
<b>Cc:</b> Andersen, Ken <andersenkh@ornl.gov>; Langan, Paul <langanpa@ornl.gov>; Ed Daly <edaly@jlab.org><br>
<b>Subject:</b> [EXTERNAL] PPU weekly update</font>
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<span style="color:black">The PPU project office finished processing the February PCRs this past week. The changes processed to date from the project baseline have been close to cost neutral, which is a testament to the soundness of the project cost and schedule
estimates you all produced.</span></p>
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<span style="color:black">In the superconducting RF area, at JLab testing of the 4<sup>th</sup> jacketed cavity to be used in the initial string assembly revealed excessive field emission and a plan is being put into place for moving forward. The last of the
30 cavities from the initial procurement have arrived at JLab. In the RF area the initial batch of new SCL RF loads arrived and we are testing prototype LLRF components from vendors as a final step before production goes into full force. In the Ring area a
preliminary design review was held for the beam-power limiting system, and the review team noted the excellent progress to date while providing valuable guidance. In the target R&D area, analysis of bubble injection in the Target Test Facility indicate that
the injected bubbles should not interfere with heat transfer from the steel target vessel to the mercury. Finally, work is progressing well in the klystron gallery. Pipe installation is moving along – with another cooling cart connection completed. Also cable
terminations have begun and initial hydro-testing started in some completed piping sections.
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<span style="color:black">Finally, we received dates (Sept. 14-17) for our next OPA review which, will be a status update only this time. Given the steady stream of weekly progress we are producing now, I think the challenge will be to figure out how to squeeze
the progress material into the prescribed review period!</span></p>
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<span style="color:black">Many thanks – jg</span></p>
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<span style="font-size:11.0pt"> </span></p>
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<span style="font-size:11.0pt">John Galambos</span></p>
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<span style="font-size:11.0pt">Proton Power Upgrade Project Director</span></p>
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<span style="font-size:11.0pt">865.576.5482</span></p>
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