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<p>Hi Tayler,</p>
<p>attached there is a photo to help in the explanation.</p>
<p>The rich detector must be always rotated using the stiffening
tool to avoid unwanted deformation of the shell especially after
the mirror integration and alignment.</p>
<p>The rotation must be performed by means of the gantry crane and
the winch is there just for safety and for the final adjustment.</p>
<p>Cheers</p>
<p>Sandro and Marco<br>
</p>
<p><br>
</p>
<p> <br>
</p>
<div class="moz-cite-prefix">Il 18-Nov-21 16:36, Tyler Lemon ha
scritto:<br>
</div>
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Hello,</div>
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<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
We're compiling information for the necessary safety
documentation for RICH-II assembly. Part of this is evaluating
the lift plan for rotating RICH from horizontal to vertical (and
back).</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
In a recent meeting, INFN collaborators mentioned that for any
RICH rotations, the stiffening tool should be installed onto the
detector shell. Is the use of the stiffening tool necessary for
rotations?<br>
</div>
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<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
For the previous RICH sector, we did not use the stiffening tool
during rotations, so its weight (an additional 625 lbs) was not
considered when developing the lift plan. If we do use the
stiffening tool during rotations, the entire process will have
to be reevaluated since a main concern would be that the winch
used during rotation may not be rated for the load of detector
shell and stiffening tool together.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
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<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
I will plan to show more information on the lift plan from last
RICH assembly so we can discuss the matter more in tomorrow's
RICH collaborators meeting.</div>
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<br>
</div>
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-Tyler<br>
</div>
<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
-----------------------------------------
Dr. Eng. Sandro Tomassini
Istituto Nazionale di Fisica Nucleare
Laboratori Nazionali di Frascati
---Research Division---
P.O.Box 13 00044 Frascati (RM) Italy
Tel. office: +39 06 9403 2919/8089
Fax: +39 06 94032256
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:sandro.tomassini@lnf.infn.it">sandro.tomassini@lnf.infn.it</a>
e-mail: <a class="moz-txt-link-abbreviated" href="mailto:sandro.tomassini@cern.ch">sandro.tomassini@cern.ch</a>
<a class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.lnf.infn.it_&d=DwMDaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=jNo6Fp3WzhzToP3zJjaqDC_7b4nsmeOGHiNd1CBrx4mIRhmnNtw4-naLeGX7dfx1&s=RFGfXjEFm7RmgfObolKVVsAP1swXAeYdqoXeZwKi-nA&e=">http://www.lnf.infn.it/</a>
<a class="moz-txt-link-freetext" href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cern.ch_&d=DwMDaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Ry65GV1L9CI4W-wouYF1Yh0O9PuhLc4ZWUkBi_Op2h8&m=jNo6Fp3WzhzToP3zJjaqDC_7b4nsmeOGHiNd1CBrx4mIRhmnNtw4-naLeGX7dfx1&s=chm-AayM-luYPHbrMTSIdOffDi_l1-QRtn0aB9tYPTk&e=">http://www.cern.ch/</a></pre>
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