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Hi Richard et al.,
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<div class="">I am forwarding some emails following our meeting on the microscope move in April to the tagger list for ease of reference. The main conclusion was to “adopt the y=0 conversion for specifying the position of the microscope.” James also provided
information and links to information about the microscope at UConn.</div>
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<div class="">Cheers, Elton.<br class="">
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">From:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">Richard Jones <<a href="mailto:richard.t.jones@uconn.edu" class="">richard.t.jones@uconn.edu</a>><br class="">
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">Subject:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class=""><b class="">Re: [EXTERNAL] TAGM Move for CPP</b><br class="">
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">Date:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">April 24, 2021 at 7:21:28 AM EDT<br class="">
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">To:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">Elton Smith <<a href="mailto:elton@jlab.org" class="">elton@jlab.org</a>><br class="">
</span></div>
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<span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif; color:rgba(0, 0, 0, 1.0);" class=""><b class="">Cc:
</b></span><span style="font-family: -webkit-system-font, Helvetica Neue, Helvetica, sans-serif;" class="">James McIntyre <<a href="mailto:james.mcintyre@uconn.edu" class="">james.mcintyre@uconn.edu</a>>, Timothy Whitlatch <<a href="mailto:whitey@jlab.org" class="">whitey@jlab.org</a>><br class="">
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<div dir="ltr" class="">Hello All,
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<div class="">I think we should all adopt the y=0 convention for specifying the position of the microscope. That is where it should go unless there are physical obstructions that prevent it from getting closer. I know that at the nominal 9 GeV position there
was interference from the massive support pillar for the tagger magnet that gets in the way of pushing the TAGM all the way into the correct position. This should not be the case at the new position, but there may be other obstructions. That's fine, we will
deal with them when the time comes. But the correct placement of the scintillator ends is y=0, by design. We should not let offsets that come from support structure interference at the 9 GeV position somehow get adopted as nominal when we move to another position
on the focal plane.</div>
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<div class="">-Richard</div>
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<div dir="ltr" class="gmail_attr">On Fri, Apr 23, 2021 at 2:36 PM Elton Smith <<a href="mailto:elton@jlab.org" class="">elton@jlab.org</a>> wrote:<br class="">
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<span style="color:rgb(156,101,0)" class=""></span>*Message sent from a system outside of UConn.*</div>
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<div class="">Hi James,
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<div class="">Thanks for your summary and the (important) work that you are completing. </div>
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<div class="">I just want to veify that we decided to place the microscope at y=-0.93 cm? I glanced at your extensive documentation and all graphs (probably legacy) all indicate the focal plane. I assume we will have an update at the Beamline meeting on Tuesday
and finalize any details.</div>
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<div class="">Thanks! Elton</div>
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<div class="">------------------------------------</div>
<div class="">Elton Smith</div>
<div class="">Jefferson Lab MS 12H3</div>
<div class="">12000 Jefferson Ave STE 4</div>
<div class="">Newport News, VA 23606</div>
<div class="">(757)269-7625</div>
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<div class="">On Apr 21, 2021, at 3:34 PM, James McIntyre <<a href="mailto:james.mcintyre@uconn.edu" target="_blank" class="">james.mcintyre@uconn.edu</a>> wrote:</div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Hi Elton,</div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Just a quick update.</div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- I've reviewed the numbers in your slide show and found that I get the same. The only difference is that I use y(focal plane) = 0 as a reference when discussing most things.</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br class="">
</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- To alleviate any confusion, I've created a table in my Excel calculations to show the center ([x, y]_fp) of the front-face of the forward bundle half of each fiber bundle. This
automatically updates when a new starting energy (highest tagged photon energy) is inputted into the Excel. This will be useful when surveys are conducted.
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br class="">
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- I've completed the drawings for the three components needed to adjust the parallel railing system for a move to tag 6.2 - 4.7 GeV photons. This setup utilizes only 16 of 17 possible
(5x6) fiber bundles due to the limitation imposed by the small beta angle and parallel railing length, as discussed at the last meeting. This will not cause any issues.<br class="">
</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br class="">
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- I've gotten a quote from our usual vendor for the new components needed for the move, and it is with Richard.</div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- Our wiki has permanent links to design CAD files and the spreadsheet needed for the move. Here are the links to the wiki pages:</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam10.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Furldefense.proofpoint.com-252Fv2-252Furl-253Fu-253Dhttps-2D3A-5F-5Fzeus.phys.uconn.edu-5Fwiki-5Findex.php-5FMoving-2D5Fthe-2D5FTagger-2D5FMicroscope-2526d-253DDwMFaQ-2526c-253DCJqEzB1piLOyyvZjb8YUQw-2526r-253Dc-2D-5FtH8evYLC4MjBfbp0hiQ-2526m-253DT-5F-5F5RupZwMECEwMOCFxpB2D3N9OgFnXtIqMHQtd-2Dks0-2526s-253DHNjfCI9YvhzS2UXeNsLzl6h9nlB2qb445342SUtsbVk-2526e-253D-26data-3D04-257C01-257C-257Cab66df6cd56e412a682808d90686c31e-257C17f1a87e2a254eaab9df9d439034b080-257C0-257C0-257C637547998133062138-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C1000-26sdata-3DlIG3dx8qY7zZ2aTzutZV0jdho-252FreY6pQmqzYkQewzS8-253D-26reserved-3D0&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=c-_tH8evYLC4MjBfbp0hiQ&m=8_VeBHGwDu-vT2A1K1HSwzXPc7Ad-1wALYWu2_U34xk&s=g1WtjRMkBiPs2ZoMHKNzh8dpHcmdqpFd08OwShSO6Y4&e=" target="_blank" class="">https://zeus.phys.uconn.edu/wiki/index.php/Moving_the_Tagger_Microscope</a></div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam10.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Furldefense.proofpoint.com-252Fv2-252Furl-253Fu-253Dhttps-2D3A-5F-5Fzeus.phys.uconn.edu-5Fwiki-5Findex.php-5FCalculating-2D5Fthe-2D5Fmove-2526d-253DDwMFaQ-2526c-253DCJqEzB1piLOyyvZjb8YUQw-2526r-253Dc-2D-5FtH8evYLC4MjBfbp0hiQ-2526m-253DT-5F-5F5RupZwMECEwMOCFxpB2D3N9OgFnXtIqMHQtd-2Dks0-2526s-253DqZogDVjU2ThLW-5FqauPSlgY7VenzSv-5F5EoVXO8wypxng-2526e-253D-26data-3D04-257C01-257C-257Cab66df6cd56e412a682808d90686c31e-257C17f1a87e2a254eaab9df9d439034b080-257C0-257C0-257C637547998133072135-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C1000-26sdata-3DU2f6oaie8Q0O8GkMr-252FP8HNOySVC-252FG0SjKr-252FjZesmy-252BA-253D-26reserved-3D0&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=c-_tH8evYLC4MjBfbp0hiQ&m=8_VeBHGwDu-vT2A1K1HSwzXPc7Ad-1wALYWu2_U34xk&s=-dvy47hnXvUFgZ9g5x6pP1COi_jhVQ7Eaghyi4sITMQ&e=" target="_blank" class="">https://zeus.phys.uconn.edu/wiki/index.php/Calculating_the_move</a></div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- I will be training Daniel (Richard's new grad student) so that he will be well prepared when it's time to perform the move.
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">- A few design concepts have been presented to our group with regards to fixing the issue of fibers pushing the darkening shroud up into the TAGH. All of these are simple fixes
that can be quickly implemented. I will continue to work with Richard on this fix.</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small"><br class="">
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">I will continue to work with Daniel on move preparations. Please let me know if you need anything else.</div>
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<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Cheers,</div>
<div class="gmail_default" style="font-family:arial,sans-serif;font-size:small">Jim<br class="">
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