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<p>Hi Jim,</p>
<p>Yes, for next prototype we want it to be black and printed from
radiation hard material. <br>
</p>
<p>This was printed with the material that was being used here
already and should be considered a first assembly test. For that
purpose this was ideal, since we were able to identify some issues<br>
with the design that we need to address. Thanks to Wouter pushing
the purchase of so much new equipment here, through the faculty no
less, we should be in a position to turn out the next prototypes
pretty rapidly, over the summer,<br>
until we have something that works really well. It is very useful,
even if we end up deciding to have it machined from aluminum in
the end. <br>
</p>
<p>Michael</p>
<div class="moz-cite-prefix">On 2021-05-03 7:06 a.m., James Fast
wrote:<br>
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<p class="MsoNormal">Very nice!<o:p></o:p></p>
<p class="MsoNormal">I am pretty sure production parts should be
black to gobble up any photons that don’t totally internally
reflect in the quartz, but very nice. Is that a nylon
plastic? We do need to consider radiation hardness of these
parts….we don’t want these to embrittle an become very
fragile.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Jim<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<div>
<p class="MsoNormal">James Fast<o:p></o:p></p>
<p class="MsoNormal">MOLLER Project Manager<o:p></o:p></p>
<p class="MsoNormal">Jefferson Lab<o:p></o:p></p>
<p class="MsoNormal">757-230-6833<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Michael
Gericke <a class="moz-txt-link-rfc2396E" href="mailto:Michael.Gericke@umanitoba.ca"><Michael.Gericke@umanitoba.ca></a><br>
<b>Date: </b>Friday, April 30, 2021 at 7:13 PM<br>
<b>To: </b><a class="moz-txt-link-abbreviated" href="mailto:moller_intdet@jlab.org">moller_intdet@jlab.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:moller_intdet@jlab.org"><moller_intdet@jlab.org></a>, Larry Bartoszek
<a class="moz-txt-link-rfc2396E" href="mailto:design@bartoszekeng.com"><design@bartoszekeng.com></a>, James Fast
<a class="moz-txt-link-rfc2396E" href="mailto:jfast@jlab.org"><jfast@jlab.org></a><br>
<b>Subject: </b>[EXTERNAL] Ring 5 prototype<o:p></o:p></span></p>
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<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<br>
<br>
Nafis and I put together the first full scale Ring 5
prototype this <br>
afternoon (see attached figures). The entire mounting
structure is 3D <br>
printed and the quartz and light guide are installed, and we
test fitted <br>
the PMT.<br>
The structural integrity is very good, even though we did
not use a <br>
particularly special (say carbon fiber infused) material.
We will be <br>
improving several things we noticed, which made the assembly
cumbersome<br>
and which would eventually improve the light tightening.<br>
<br>
Regards,<br>
<br>
Michael<br>
<br>
<o:p></o:p></p>
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<br>
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