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<p class="MsoNormal">FYI<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Adam Grabowski <adamg@jlab.org> <br>
<b>Sent:</b> Wednesday, October 11, 2023 8:31 AM<br>
<b>To:</b> Tony Reilly <areilly@jlab.org>; Mike Bevins <mbevins@jlab.org><br>
<b>Cc:</b> Andrei Seryi <seryi@jlab.org>; Kirk Davis <kdavis@jlab.org>; Philip Denny <denny@jlab.org>; John Fischer <fischer@jlab.org>; Michael Drury <drury@jlab.org>; E. Anne McEwen <mcewen@jlab.org>; Mike Spata <spata@jlab.org>; Valerie Bookwalter <bookwalt@jlab.org><br>
<b>Subject:</b> Re: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Tony, <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">That is correct. <o:p></o:p></span></p>
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<p style="background:white"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">Adam Grabowski</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"> </span><span style="color:black"><o:p></o:p></span></p>
<p style="background:white;text-align:start"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">SRF Test Engineer</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E;border:none windowtext 1.0pt;padding:0in">,
L2HE Project CAM</span><span style="color:#242424"><o:p></o:p></span></p>
<p style="background:white;text-align:start"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in;background:white">Jefferson Lab</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"><br>
</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in;background:white">600 KELVIN DR Suite # 8</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"> </span><span style="color:black"><o:p></o:p></span></p>
<p style="background:white"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">Mail Stop 55H<br>
<span style="background:white">Newport News, VA 23606</span></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"> </span><span style="color:black"><o:p></o:p></span></p>
<p style="background:white;text-align:start"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">O: 757-269-7665</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"> </span><span style="color:black"><o:p></o:p></span></p>
<p style="background:white;text-align:start"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">C: 360-320-7003</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"> </span><span style="color:black"><o:p></o:p></span></p>
<p style="background:white;text-align:start"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;border:none windowtext 1.0pt;padding:0in">E:
<a href="mailto:adamg@jlab.org">adamg@jlab.org</a></span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#201F1E"> </span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Tony Reilly <<a href="mailto:areilly@jlab.org">areilly@jlab.org</a>><br>
<b>Sent:</b> Wednesday, October 11, 2023 7:37 AM<br>
<b>To:</b> Mike Bevins <<a href="mailto:mbevins@jlab.org">mbevins@jlab.org</a>>; Adam Grabowski <<a href="mailto:adamg@jlab.org">adamg@jlab.org</a>><br>
<b>Cc:</b> Andrei Seryi <<a href="mailto:seryi@jlab.org">seryi@jlab.org</a>>; Adam Grabowski <<a href="mailto:adamg@jlab.org">adamg@jlab.org</a>>; Kirk Davis <<a href="mailto:kdavis@jlab.org">kdavis@jlab.org</a>>; Philip Denny <<a href="mailto:denny@jlab.org">denny@jlab.org</a>>;
John Fischer <<a href="mailto:fischer@jlab.org">fischer@jlab.org</a>>; Michael Drury <<a href="mailto:drury@jlab.org">drury@jlab.org</a>>; E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>>; Mike Spata <<a href="mailto:spata@jlab.org">spata@jlab.org</a>>;
Valerie Bookwalter <<a href="mailto:bookwalt@jlab.org">bookwalt@jlab.org</a>><br>
<b>Subject:</b> Re: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL</span>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">Mike, Adam,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">I am taking this stoppage to affect all work centers with the exception of the ongoing work in the LERF.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">Please correct me if I am wrong.
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Aptos",sans-serif;color:black">Tony<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Mike Bevins <<a href="mailto:mbevins@jlab.org">mbevins@jlab.org</a>><br>
<b>Sent:</b> Wednesday, October 11, 2023 7:06 AM<br>
<b>To:</b> Stuart Henderson <<a href="mailto:stuart@jlab.org">stuart@jlab.org</a>><br>
<b>Cc:</b> Tony Reilly <<a href="mailto:areilly@jlab.org">areilly@jlab.org</a>>; Andrei Seryi <<a href="mailto:seryi@jlab.org">seryi@jlab.org</a>>; Adam Grabowski <<a href="mailto:adamg@jlab.org">adamg@jlab.org</a>><br>
<b>Subject:</b> Fwd: LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL</span>
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<p class="MsoNormal">Stuart <o:p></o:p></p>
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<p class="MsoNormal">Please see below the email received last night from SLAC. I expect to learn more this am and will report back. <o:p></o:p></p>
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<p class="MsoNormal">Regards<o:p></o:p></p>
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<p class="MsoNormal">Mike<o:p></o:p></p>
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<p style="background:white"><b><span style="font-size:12.0pt;color:black">Michael E. Bevins, PE</span></b><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black">JLab LCLSII-HE Senior Team Lead </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black">(757) 269-7728 office </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black">(757) 407-0238 cell </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black"><a href="mailto:mbevins@jlab.org"><span style="color:#0078D4">mbevins@jlab.org</span></a> </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black">Thomas Jefferson National Accelerator Facility </span><o:p></o:p></p>
<p style="background:white"><span style="font-size:12.0pt;color:black">Newport News, Virginia USA </span><o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> Garcia, Fernanda G. <<a href="mailto:fgarcia@slac.stanford.edu">fgarcia@slac.stanford.edu</a>><br>
<b>Sent:</b> Tuesday, October 10, 2023 8:20 PM<br>
<b>To:</b> Tug T Arkan <<a href="mailto:arkan@fnal.gov">arkan@fnal.gov</a>>; Mike Bevins <<a href="mailto:mbevins@jlab.org">mbevins@jlab.org</a>><br>
<b>Cc:</b> Hogan, John <<a href="mailto:jhogan@slac.stanford.edu">jhogan@slac.stanford.edu</a>>; Joshua Kaluzny <<a href="mailto:kaluzny@fnal.gov">kaluzny@fnal.gov</a>>; Adam Grabowski <<a href="mailto:adamg@jlab.org">adamg@jlab.org</a>>; Checchin, Mattia <<a href="mailto:mattiac@slac.stanford.edu">mattiac@slac.stanford.edu</a>>;
Garcia, Fernanda G. <<a href="mailto:fgarcia@slac.stanford.edu">fgarcia@slac.stanford.edu</a>>; Fitzpatrick, Jarrod <<a href="mailto:jarrod@slac.stanford.edu">jarrod@slac.stanford.edu</a>>; Hays, Greg <<a href="mailto:haysgr@slac.stanford.edu">haysgr@slac.stanford.edu</a>><br>
<b>Subject:</b> [EXTERNAL] LCLS-II-HE: Work Pause on Cryomodule Production at JLab and FNAL
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<p class="xxmsonormal">Dear Tug and Mike,<o:p></o:p></p>
<p class="xxmsonormal">I am writing to inform you that I have declared a work pause on cryomodule assembly lines at both JLab and FNAL, effective immediately. This work pause does not impact cryomodules that are currently undergoing testing at LERF (JLab) or
CMTF (FNAL).<o:p></o:p></p>
<p class="xxmsonormal"><b>Please ensure that before pausing work, all workstations are put in a safe condition.</b> Please follow the safety procedures that are specific to your laboratory/workstation.
<o:p></o:p></p>
<p class="xxmsonormal">I am declaring this work pause because we have had four cryomodules that have required rework in the past few months:<o:p></o:p></p>
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<li class="xxmsonormal" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1">
F26 - chipped ceramic<o:p></o:p></li><li class="xxmsonormal" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1">
F29 - beamline bellows damage<o:p></o:p></li><li class="xxmsonormal" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1">
J22 - vacuum leak - beamline and possible He process line (although not confirmed at CMTS)<o:p></o:p></li><li class="xxmsonormal" style="margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1">
J23 - required warm-up while testing at LERF to mechanically repair a few components identified during the 2K testing at LERF - thermal cycle and retest required.<o:p></o:p></li></ul>
<p class="xxmsonormal" style="margin:0in">I believe that a work pause and a workshop are necessary to discuss the common themes and share the experiences from both production lines that have emerged from these issues. I have charged John Hogan to organize a
one-day workshop with both partner labs and the SLAC team to come together, discuss the issues, and collectively find a path forward. I am strongly encouraging in-person attendance for this meeting, as it will allow for more productive and collaborative discussions.
However, if necessary, a Zoom link will be made available for those who are unable to attend in person.<o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in">The work pause will remain in effect until the workshop has been held and a plan has been developed to address the root causes of the rework issues.<o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in">I understand that this work pause will be disruptive, but I believe it is necessary to ensure the quality and reliability of our cryomodule production.
<o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in">Sincerely,<o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in">Fernanda G. Garcia<o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"> <o:p></o:p></p>
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