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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Drear Pansophy Team
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We have an issue where it seems the SN that was used for the FPC of Cavity C75-RI-011 is not known
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The SN was not available in the drop downs for the initial inspections done back in November, then it seems that on the part later the SN was scratch out (see
photos) <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">In Pansophy I am seeing now that SNs are appearing in the drop down for the C20 HOM and FPC travelers - Is it possible to get a list of the SNs that are available
in these two travelers , and can you also give a list of which ones have been used so far in cavities ?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I am hoping that by process of elimination we will be able to narrow down the possible serials numbers for the FPC on C75-RI-011 , then by looking very closely
at C75-RI-011, once it is available again , we might be able to figure out the original SN
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">There is a more general problem where for CEBAF there are many old serial numbers – and it becomes difficult to tell by looking at the parts which are valid and
which ones have been retired - The NBSN Cavities are a good example of this problem
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">This cavity will be going into the machine, and for a number of reasons it is important to figure out what might have been the SN for the FPC that was used
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks for your help
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Anne
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> E. Anne McEwen
<br>
<b>Sent:</b> Thursday, February 11, 2021 5:30 PM<br>
<b>To:</b> Ashley Anderson Mitchell <ashleya@JLAB.ORG><br>
<b>Cc:</b> Kurt Macha <macha@jlab.org>; Jacob Harris <jharris@jlab.org>; pansophy <pansophy@jlab.org>; George DeKerlegand <georged@jlab.org>; Earl Mosby <mosby@jlab.org>; Gianluigi Ciovati <gciovati@jlab.org>; Scott Williams <scott@jlab.org><br>
<b>Subject:</b> RE: C75-RI-011 - End Group Serial Numbers ?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks Ashley – we will look for it
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Anne
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Ashley Anderson Mitchell <<a href="mailto:ashleya@jlab.org">ashleya@jlab.org</a>>
<br>
<b>Sent:</b> Thursday, February 11, 2021 5:29 PM<br>
<b>To:</b> E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>><br>
<b>Cc:</b> Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>>; Jacob Harris <<a href="mailto:jharris@jlab.org">jharris@jlab.org</a>>; pansophy <<a href="mailto:pansophy@jlab.org">pansophy@jlab.org</a>>; George DeKerlegand <<a href="mailto:georged@jlab.org">georged@jlab.org</a>>;
Earl Mosby <<a href="mailto:mosby@jlab.org">mosby@jlab.org</a>>; Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>; Scott Williams <<a href="mailto:scott@jlab.org">scott@jlab.org</a>><br>
<b>Subject:</b> Re: C75-RI-011 - End Group Serial Numbers ?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="background:white"><span style="color:black">Anne, <o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="color:black">C75-RI-011 is in the tuning room last I saw. It was on a cart with a yellow hold tag on a flange cover. <o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="color:black">If it helps, Gigi and I were able to see IA-008 scratched out on the FPC and CEBAF aim the HOMs. <o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">- Ashley Mitchell<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>><br>
<b>Sent:</b> Thursday, February 11, 2021 4:45:35 PM<br>
<b>To:</b> Ashley Anderson Mitchell <<a href="mailto:ashleya@jlab.org">ashleya@jlab.org</a>><br>
<b>Cc:</b> Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>>; Jacob Harris <<a href="mailto:jharris@jlab.org">jharris@jlab.org</a>>; pansophy <<a href="mailto:pansophy@jlab.org">pansophy@jlab.org</a>>; George DeKerlegand <<a href="mailto:georged@jlab.org">georged@jlab.org</a>>;
Earl Mosby <<a href="mailto:mosby@jlab.org">mosby@jlab.org</a>>; Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>; Scott Williams <<a href="mailto:scott@jlab.org">scott@jlab.org</a>><br>
<b>Subject:</b> RE: C75-RI-011 - End Group Serial Numbers ?</span> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="xmsonormal"><span style="color:#1F497D">Hello Ashely – </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">As of Tuesday according to the schedule, it looks like you had C75-RI-011 in chemistry , do you know where this cavity has gone and is it accessible ? After Feb 9<sup>th</sup> it disappears from the schedule
so I am not sure where it is now </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">Gigi would like an investigation to find out what is the SN for the end group , so the next time it is available to us we would like to be able to see it again
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">Thanks Anne </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="xmsonormal"><b>From:</b> E. Anne McEwen <br>
<b>Sent:</b> Thursday, February 11, 2021 4:35 PM<br>
<b>To:</b> Scott Williams <<a href="mailto:scott@jlab.org">scott@jlab.org</a>><br>
<b>Cc:</b> Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>>; Jacob Harris <<a href="mailto:jharris@jlab.org">jharris@jlab.org</a>>; pansophy <<a href="mailto:pansophy@jlab.org">pansophy@jlab.org</a>>; George DeKerlegand <<a href="mailto:georged@jlab.org">georged@jlab.org</a>>;
Earl Mosby <<a href="mailto:mosby@jlab.org">mosby@jlab.org</a>>; Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>; Ashley Anderson Mitchell <<a href="mailto:ashleya@JLAB.ORG">ashleya@JLAB.ORG</a>><br>
<b>Subject:</b> FW: C75-RI-011 - End Group Serial Numbers ?<o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">Hi Scott </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">I understand you have a list of the Serial numbers for the end groups that we originally cut off – If you have this can you please send it to us
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">We need to try and figure out what the correct serial number was for this end group before it was scratched out (if possible )
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">Unfortunately it seems that the serial numbers were not available in the drop downs original traveler when it was first inspected back in November , subsequently it seems that the SN was scratched out on the
part – so as a result we may have lost traceability on what end group ended up in this cavity
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">At this point we can only do our best to try and figure out by process of elimination which end group was used
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">I will come by in the morning – Thanks for your help
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">Anne </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D">PS – for some reason this email was sent to my home address – for anyone responding please check that it’s going to my JLAB address
<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a> so I will see any correspondence
</span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xmsonormal"><b>From:</b> Anne McEwen <<a href="mailto:anne.mcewen@outlook.com">anne.mcewen@outlook.com</a>>
<br>
<b>Sent:</b> Wednesday, February 10, 2021 6:21 PM<br>
<b>To:</b> E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>><br>
<b>Subject:</b> [EXTERNAL] FW: C75-RI-011<o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xmsonormal"><b>From:</b> Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>
<br>
<b>Sent:</b> Wednesday, February 10, 2021 11:21 AM<br>
<b>To:</b> Scott Williams <<a href="mailto:scott@jlab.org">scott@jlab.org</a>>; Anne McEwen <<a href="mailto:anne.mcewen@outlook.com">anne.mcewen@outlook.com</a>>; Jacob Harris <<a href="mailto:jharris@jlab.org">jharris@jlab.org</a>>; pansophy <<a href="mailto:pansophy@jlab.org">pansophy@jlab.org</a>>;
George DeKerlegand <<a href="mailto:georged@jlab.org">georged@jlab.org</a>>; Earl Mosby <<a href="mailto:mosby@jlab.org">mosby@jlab.org</a>><br>
<b>Cc:</b> Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>>; Tony Reilly <<a href="mailto:areilly@jlab.org">areilly@jlab.org</a>><br>
<b>Subject:</b> Fw: C75-RI-011<o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Hi all,</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">there seems to have been a chain of unfortunate events that has prevented us to associate the end-groups serial numbers to the proper C75 cavity SN:</span><o:p></o:p></p>
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<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo3"><span style="font-family:"Calibri",sans-serif">During inspection of the cavities from which the end-groups were going to be cut, it was agreed to serialize the end-groups with "EG-cavity SN"
and this is how they were recorded in the travelers C20-CAV-INSP-FPCEG and C20-CAV-INSP-HOMEG</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo3"><span style="font-family:"Calibri",sans-serif">When the cavities arrived from RI and were inspected by CMM group, those end-group SNs were not available in the drop-down menu for the traveler
C75-CAV-INSP so the end-group SNs were left undefined in the cavity inspection traveler</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo3"><span style="font-family:"Calibri",sans-serif">After the end-groups SNs were added to the drop-down menus, I was informed yesterday that some of the EG SNs were "scratched out" and not visible.</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l1 level1 lfo3"><span style="font-family:"Calibri",sans-serif">This morning, I asked Ashley to check the thickness of the FPC flange on cavity C75-RI-011 and she sent me the pictures below which indeed show
that the end-group SNs were scratched out and replaced by some other nomenclature</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p></o:p></span></li></ul>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">How did the end-groups got the SNs scratched out and re-serialized? How was it decided?</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Thanks for your help and for a) suggesting a fix to the issue, b) fix the issue, c) suggest ways to prevent similar issue to occur again.</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Best regards,</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Gigi</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><b><span style="color:black">From:</span></b><span style="color:black"> Ashley Anderson Mitchell <<a href="mailto:ashleya@jlab.org">ashleya@jlab.org</a>><br>
<b>Sent:</b> Wednesday, February 10, 2021 10:35 AM<br>
<b>To:</b> Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>; Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>><br>
<b>Subject:</b> Re: C75-RI-011</span> <o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Gigi, </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> I took thickness at the 4 corners so as not to scratch the flange sealing surface. Measurements are in inches: 0.3005, 0.3490, 0.3270, 0.3280</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">As for the SN#s, some are scratched out. </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> FPC says FLG#3 and MM#2 (and cavity number in two places)</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">HOM says MM 4 </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"><img border="0" width="2000" height="1500" style="width:20.8333in;height:15.625in" id="x_x_id-C347407C-036B-451D-96F3-1D8FB0DAF1B2" src="cid:image001.jpg@01D7009B.93DE4FB0" alt="Image.jpeg"></span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"><img border="0" width="1500" height="2000" style="width:15.625in;height:20.8333in" id="x_x_id-F8BEE661-2D66-4C71-AEAB-94826B0592E5" src="cid:image002.jpg@01D7009B.93DE4FB0" alt="Image.jpeg"></span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"><img border="0" width="1500" height="2000" style="width:15.625in;height:20.8333in" id="x_x_id-AA5FFDB6-0230-469F-9705-A8163C8688F5" src="cid:image003.jpg@01D7009B.93DE4FB0" alt="Image.jpeg"></span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><b><span style="color:black">From:</span></b><span style="color:black"> Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>><br>
<b>Sent:</b> Wednesday, February 10, 2021 9:19 AM<br>
<b>To:</b> Ashley Anderson Mitchell <<a href="mailto:ashleya@jlab.org">ashleya@jlab.org</a>>; Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>><br>
<b>Subject:</b> Re: C75-RI-011</span> <o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Hi Ashley,</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">yes, thank you, I'll update the traveler within the hour. Could you please do a quick caliper check of the thickness of the FPC flange? There seems to be some issues with the end-groups SNs being
scratched out?</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Thanks,</span><o:p></o:p></p>
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<p class="xmsonormal"><span style="font-size:12.0pt;color:black">Gigi</span><o:p></o:p></p>
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<p class="xmsonormal"><b><span style="color:black">From:</span></b><span style="color:black"> Ashley Anderson Mitchell <<a href="mailto:ashleya@jlab.org">ashleya@jlab.org</a>><br>
<b>Sent:</b> Wednesday, February 10, 2021 8:58 AM<br>
<b>To:</b> Gianluigi Ciovati <<a href="mailto:gciovati@jlab.org">gciovati@jlab.org</a>>; Kurt Macha <<a href="mailto:macha@jlab.org">macha@jlab.org</a>><br>
<b>Subject:</b> C75-RI-011</span> <o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal">Gigi, <o:p></o:p></p>
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<p class="xmsonormal">C75-RI-011‘a processing traveler ends with us at the USC and I don’t see it on the schedule in the future. <o:p></o:p></p>
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<p class="xmsonormal">I think it should need tuning, CMM and/or lapping next? <o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal">Thanks, <o:p></o:p></p>
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<p class="xmsonormal"> <o:p></o:p></p>
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<p class="xmsonormal">- Ashley Mitchell<o:p></o:p></p>
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