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<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D">These parts were received on the C100 project per the paperwork and are available for C100 Travelers. Please note that per the Traveler system, C100 & C100R are two distinct projects, therefore
serial numbers do not cross over.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D">Gary,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D">I will have to get into the database to make the project change for the dropdowns. Should Inventory be changed as well?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-family:Consolas;color:black">Mike Dickey<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:black">SRF Inventory Technician<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Consolas;color:black">Jefferson Lab<br>
12000 Jefferson Ave<br>
Newport News, VA 23606<br>
(757) 269-7755</span><span style="font-family:Consolas;color:#1F497D"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-family:Consolas;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 <mcewen@jlab.org>
<br>
<b>Sent:</b> Thursday, April 21, 2022 8:17 AM<br>
<b>To:</b> Gary Cheng <cheng@jlab.org><br>
<b>Cc:</b> George DeKerlegand <georged@jlab.org>; Earl Mosby <mosby@jlab.org>; Mike Dickey <mdickey@jlab.org><br>
<b>Subject:</b> RE: C100 spare helium vessel items & headers bellows QC<o:p></o:p></span></p>
</div>
</div>
<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 Gary ! , we will put it on the list
<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">Best wishes
<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"> Gary Cheng <<a href="mailto:cheng@jlab.org">cheng@jlab.org</a>>
<br>
<b>Sent:</b> Wednesday, April 20, 2022 3:06 PM<br>
<b>To:</b> E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>><br>
<b>Cc:</b> George DeKerlegand <<a href="mailto:georged@jlab.org">georged@jlab.org</a>>; Earl Mosby <<a href="mailto:mosby@jlab.org">mosby@jlab.org</a>>; Mike Dickey <<a href="mailto:mdickey@jlab.org">mdickey@jlab.org</a>><br>
<b>Subject:</b> Re: C100 spare helium vessel items & headers bellows QC<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif">Hi Anne,<br>
<br>
The travelers for QC of the spare C100 parts are approved:<br>
C100R-CMA-HELV-INSP<br>
C100R-CMA-HERB-INSP<br>
C100R-CMA-HESB-INSP<br>
<br>
I noted Mike to populate the HESB and HERB dropdown lists. <br>
<br>
Thanks,<br>
Gary</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 3/14/2022 9:15 AM, E. Anne McEwen wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Gary
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">We heard this morning that the first C100 Cavity tested this weekend in the VTA field emitted badly (even caused neutrons …. )
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">So I am expecting they may want to use one or more of the spare C100 cavities (Tony confirmed they will ne hundting down any of the C100 spares they can find)
, in which case somone is going to come looking for the HE Vessel items </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I had inventory bring the parts down a month ago (did not realize the traveler was not available) – so now given the performance of the C100 cavities , could
you let us know when the traveler will be available – </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">please let us know if any help is needed
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks Anne
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></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"> Gary Cheng
<a href="mailto:cheng@jlab.org"><cheng@jlab.org></a> <br>
<b>Sent:</b> Thursday, March 3, 2022 3:55 PM<br>
<b>To:</b> E. Anne McEwen <a href="mailto:mcewen@jlab.org"><mcewen@jlab.org></a><br>
<b>Cc:</b> 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>Subject:</b> Re: C100 spare helium vessel items & headers bellows QC</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif">Hi Anne,<br>
<br>
It's on my list of things-to-do. I will find time to work on it and let you know when it is ready for use.<br>
<br>
Thanks,<br>
Gary</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 3/3/2022 3:43 PM, E. Anne McEwen wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Gary – I was wondering if you had a chance to look into the traveler for the HR Vessel for C100R ?
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If you need help please let us know – the parts are presently on our shelf so we can inspect them once we have the traveler
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks Anne
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<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> Monday, February 21, 2022 2:13 PM<br>
<b>To:</b> Gary Cheng <a href="mailto:cheng@jlab.org"><cheng@jlab.org></a><br>
<b>Cc:</b> John Fischer <a href="mailto:fischer@jlab.org"><fischer@jlab.org></a>; Tony Reilly
<a href="mailto:areilly@jlab.org"><areilly@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>Subject:</b> RE: C100 spare helium vessel items & headers bellows QC</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Gary
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I had the C100 HE Vessel parts for the two spare HE Vessels brought to the CMM room shelf last week by Inventory – just wanted to make sure they were not forgotten
(assume they are not urgent ) </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Could you let us know which traveler to use - if you are still in process of updating or converting it just let me know the expected Traveler acronym , so I can
put it on my list </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks Anne
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></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"> Gary Cheng <<a href="mailto:cheng@jlab.org">cheng@jlab.org</a>>
<br>
<b>Sent:</b> Monday, January 31, 2022 12:06 PM<br>
<b>To:</b> Tony Reilly <<a href="mailto:areilly@jlab.org">areilly@jlab.org</a>><br>
<b>Cc:</b> E. Anne McEwen <<a href="mailto:mcewen@jlab.org">mcewen@jlab.org</a>>; John Fischer <<a href="mailto:fischer@jlab.org">fischer@jlab.org</a>><br>
<b>Subject:</b> Re: C100 spare helium vessel items & headers bellows QC</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif">Hi Tony,<br>
<br>
Ok I will convert the travelers. <br>
<br>
C100 has a magnetic shielding design goal of attenuating the earth magnetic field by 50 or 100 times. that is, assuming a .5 Gauss ambient field, the goal is to have 5~10 mG residual field on cavity surface. To achieve that, I primarily focused on the shield
design. <br>
<br>
The C100 helium vessels were discovered to have remanent magnetic field later on after we start to receive them from vendor. Hence we started to measure the permeability. As you know, demagnetization started on the L2 cavities and CM components.
<br>
<br>
To my knowledge, C100 refurb project does not require a change to C100 in regard to magnetic hygiene. To me, the permeability measurement is not informative on what remanent field a component has. I wouldn't suggest to continue doing that. So, if you agree,
I will remove that step from inspection. Alternatively, I may adapt this step to ask for magnetic field measurement and demagnetize with the available demagnetizers to the best that we can do.
<br>
<br>
Thanks,<br>
Gary</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 1/31/2022 11:01 AM, Tony Reilly wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Hi Gary,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><br>
The travelers need to be converted and the names updated please. As for magnetic hygiene, do we have a program or requirement for C100s? Are we demagnetizing any other parts? Does t make sense to demag spares now or when they are certain to go onto a cavity?
Is there a specification for the permeability that the vendor needed to meet?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Tony</span><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"> Gary Cheng
<a href="mailto:cheng@jlab.org"><cheng@jlab.org></a><br>
<b>Sent:</b> Monday, January 31, 2022 10:56 AM<br>
<b>To:</b> Tony Reilly <a href="mailto:areilly@jlab.org"><areilly@jlab.org></a><br>
<b>Cc:</b> E. Anne McEwen <a href="mailto:mcewen@jlab.org"><mcewen@jlab.org></a>; John Fischer
<a href="mailto:fischer@jlab.org"><fischer@jlab.org></a><br>
<b>Subject:</b> Re: C100 spare helium vessel items & headers bellows QC</span> <o:p>
</o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif">Hi Tony,<br>
<br>
Do you think I should convert C100 helium vessel and cryogenic circuit inspection travelers to C100R versions, or, use the old ones as is? The old travelers still have John Hogan as project manager.
<br>
<br>
The C100 helium vessel traveler has a step for magnetic permeability measurement, our original effort on magnetic hygiene control at the time. We can choose to i) keep this as is, ii) remove it, or iii) rewrite it to survey parts then demagnetize if necessary
to align with LCLS-II magnetic hygiene control strategy. <br>
<br>
Thanks,<br>
Gary</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 1/31/2022 8:39 AM, Tony Reilly wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">C1010Q</span><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"> Gary Cheng
<a href="mailto:cheng@jlab.org"><cheng@jlab.org></a><br>
<b>Sent:</b> Friday, January 28, 2022 2:56 PM<br>
<b>To:</b> Tony Reilly <a href="mailto:areilly@jlab.org"><areilly@jlab.org></a><br>
<b>Cc:</b> E. Anne McEwen <a href="mailto:mcewen@jlab.org"><mcewen@jlab.org></a>; John Fischer
<a href="mailto:fischer@jlab.org"><fischer@jlab.org></a><br>
<b>Subject:</b> C100 spare helium vessel items & headers bellows QC</span> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Hi Tony,<br>
<br>
We just received a few kits of C100 helium vessel kits and helium header bellows, which will be used as spares for future C100 refurb. They need to go through incoming inspection like did for other C100 HV items and headers parts. They were purchased using
code C1010F. Which code is appropriate for the inspection work?<br>
<br>
Thanks,<br>
Gary</span><o:p></o:p></p>
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