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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>
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<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" 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 <Michael.Gericke@umanitoba.ca><br>
<b>Date: </b>Friday, April 30, 2021 at 7:13 PM<br>
<b>To: </b>moller_intdet@jlab.org <moller_intdet@jlab.org>, Larry Bartoszek <design@bartoszekeng.com>, James Fast <jfast@jlab.org><br>
<b>Subject: </b>[EXTERNAL] Ring 5 prototype<o:p></o:p></span></p>
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<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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