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If you're waiting for an answer from me, I can't say whether its better or faster to do this at JLab. My opinion is that 2 weeks is ok as long as it doesn't prevent us from buttoning up the vacuum by the deadline that Jessie and Thia require. I don't know
how much of your work interferes with buttoning up vacuum. Maybe Dave can tell us the deadline (early November, right ?), and I am sure we don't want to break vacuum during the Christmas break, its too risky. But if your work is independent of that deadline,
then 2 weeks seems fine to me.</div>
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<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0">Dr. Robert Michaels</p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0">Staff Scientist, Jefferson Lab</p>
<p style="margin-top: 0px; margin-bottom: 0px;margin-top:0; margin-bottom:0"><u></u><u></u><a href="http://userweb.jlab.org/~rom" class="OWAAutoLink">http://userweb.jlab.org/~rom</a><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> halla_compton <halla_compton-bounces@jlab.org> on behalf of Michael Gericke <Michael.Gericke@umanitoba.ca><br>
<b>Sent:</b> Monday, October 28, 2019 10:34 AM<br>
<b>To:</b> halla_compton@jlab.org <halla_compton@jlab.org>; Jie Pan <Jie.Pan@umanitoba.ca><br>
<b>Subject:</b> [halla_compton] [EXTERNAL] e-detector QWAD adapater Fwd: FW: Assembly quotation for order W73507AST5</font>
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<div style="background-color:#FFFFFF">Hello,<br>
<br>
We have a quote for the adapter boards. The lead time on the boards is 2 weeks (see Jie's message below).<br>
The questions that need to be answered are whether we should go ahead with making just the boards and<br>
then putting the components on at JLab, or if we should have them all done with one set resistors now and<br>
change them later as needed. Also, the question as to whether the boards can be made faster at JLab, giving<br>
time to make a test board first, is still open.<br>
<br>
Please let us know how we should proceed. Juliette: the cost to the grant is around $2k.<br>
<br>
Michael <br>
<br>
<pre class="x_moz-signature" cols="72">--
Michael Gericke (Ph.D., Professor)
Physics and Astronomy
University of Manitoba
30A Sifton Road, 213 Allen Bldg.
Winnipeg, MB R3T 2N2, Canada</pre>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject: </th>
<td>FW: Assembly quotation for order W73507AST5</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Mon, 28 Oct 2019 09:18:19 -0500</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Jie Pan <a class="x_moz-txt-link-rfc2396E" href="mailto:Jie.Pan@umanitoba.ca">
<Jie.Pan@umanitoba.ca></a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Michael Gericke <a class="x_moz-txt-link-rfc2396E" href="mailto:mgericke@physics.umanitoba.ca">
<mgericke@physics.umanitoba.ca></a></td>
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<p class="x_MsoNormal" style="margin: 0cm 0cm 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;">
Hi Michael,</p>
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After a few back and forth on the manufacture files over the weekend, the PCB company now gives an quote on PCB and assembly. The total cost is ~US$2000 for 20 boards. The parts themselves cost are about $45 per board (see the attached BOM, in which the DB50
connector is the most expensive part). </p>
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The PCB takes about 2 weeks to make, while the assembly probably depends on when we will give them a reply on if we will proceed the making or not. Anyway, they are waiting for the reply and we shall make a decision asap.</p>
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For the assembly, we need give the final values of the resistors in the BOM. I am not sure about that, though. The resistors determine the signal and noise level at the discriminator input, should be detector-dependent. We don’t have a JLab thin silicon strip
detector here, hence cannot verify the values by experiment. We may simply use 100K resistors for now so that the manufacture can start quick production, but the resistors might need to be replaced in the future at JLab.</p>
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Anyway, please advise me how to proceed. Thanks!</p>
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Jie </p>
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<b>From: </b><a href="mailto:julia@pcbway.com">julia.pcbway</a><br>
<b>Sent: </b>October 28, 2019 5:12 AM<br>
<b>To: </b><a href="mailto:Jie.Pan@umanitoba.ca">Jie Pan</a><br>
<b>Subject: </b>Assembly quotation for order W73507AST5</p>
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<div style="font-size:16px; color:#000000; font-family:Arial"><span style="font-size:16px"><span style="color:#000000"><span style="font-family:Arial"><span><span style="font-size:16px"><span style="color:#000000"><span style="font-family:Arial"></span></span></span><span style="font-family:Arial; font-size:16px">Hello,</span>
</span><br>
<br>
<span><span style="font-family:Arial; font-size:16px">For assembly order W73507AST5, here attached the BOM we quoted</span><span style="font-family:Arial; font-size:16px">, please kindly check and confirm especially those comments in red color showed.</span>
</span><br>
<br>
For pcb, there is 0.7mm blind vias, we suggest to update to 0.2mm to make, can you accept? If yes, we can update for you.<br>
<br>
For surface finish, we suggest to update to immersion gold, because to make blind vias, HASL is not good.<br>
<br>
<span style="font-family:Arial; font-size:16px">Look forward to your early reply to proceed, thank you.</span><br>
</span></span></span></div>
<span style="color:#CCCCCC; font-size:12px">2019-10-28 </span> <br>
<span style="color:#CCCCCC; font-size:12px">-----------------------------------</span>
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<div><strong><span style="font-size:10pt; color:#000000"><span style="display:inline-block">Julia</span></span></strong>
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