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Dear Mindy,
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<div class="">Sorry for the late reply and for not sending in the request to this email group earlier. As you mention, we need 48 regular RTDs and 6 with feed throughs. I attach pics of how these RTDs were done in the past:</div>
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<div class="">1. Pic of heat shrink around the RTD wire to support the soldered joint</div>
<div class="">2. Blue ferrels</div>
<div class="">3. RTDs with feedthrough structure. As you can notice, the short side of the feedthrough carries a smaller length of wire. In the past we used 6” to 8” of wire but this time, the pumping chamber will be slightly larger than before so I expect
the lengths to be slightly longer than last time. Let me get back to you about the exact lengths on each side. Please go ahead and order the parts in the meantime or let me know if you would like me to order them.</div>
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<div class="">Thanks again for your help!</div>
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<div class="">Best,</div>
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<div class="">Arun</div>
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<div class="">On Mar 23, 2022, at 2:42 PM, Mindy Leffel <<a href="mailto:leffel@jlab.org" class="">leffel@jlab.org</a>> wrote:</div>
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<div class="">Forgot photo</div>
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<div id="divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size:11pt" class=""><b class="">From:</b> Mindy Leffel<br class="">
<b class="">Sent:</b> Wednesday, March 23, 2022 2:41 PM<br class="">
<b class="">To:</b> <a href="mailto:dsg-halla_expt@jlab.org" class="">dsg-halla_expt@jlab.org</a> <<a href="mailto:dsg-halla_expt@jlab.org" class="">dsg-halla_expt@jlab.org</a>><br class="">
<b class="">Subject:</b> RTD cables </font>
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<span style="box-sizing: border-box; margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important;" class="">Hey Arun,</span></div>
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<span style="box-sizing: border-box; margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important;" class=""><br style="box-sizing:border-box" class="">
</span></div>
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<span style="box-sizing: border-box; margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important;" class="">I found this photo of one of the feed throughs we discussed yesterday. For the
GEn-II experiment you need a total of 48 RTD cables, six with feed throughs, like the one in the photo, consisting of four twisted pairs and 42 cables with two twisted pairs.</span></div>
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<span style="box-sizing: border-box; margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important;" class="">Mindy</span></div>
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<span id="cid:D35B4B40-746D-4F3C-97BB-D84B5A243ADD"><02-04-20 Four pairs RTD 3He polarized target with feedthrough fixture.jpg></span>_______________________________________________<br class="">
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