<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Eugene and all, </div><div><br></div><div>Regarding pi0 TFF measurement I don’t see any major issues in these drawings. </div><div>1. we are planning to use the lead glass in HYCAL, and that would necessitate a larger vacuum window. The window that I saw presented in the meeting on Monday last week seems to cover just the lead tungstate.</div><div>2. our preliminary shielding design is to install a thicker absorber (x2 thick) that covers the 2 inner-most layers of HYCAL. I didn’t see a detailed drawing of that area of HYCAL in your drawings, but maybe I missed that. </div><div>3. I believe the plan is to use the same target ladder that X17 uses. </div><div><br></div><div>That’s all for now, thanks! </div><div>Rory Miskimen</div><div><br></div><div><br></div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Sent from my iPad</div><div dir="ltr"><br><blockquote type="cite">On Nov 20, 2024, at 8:50 AM, Eugene Pasyuk via PRad <prad@jlab.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black;mso-ligatures:standardcontextual">-Eugene<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Bob Miller <rmiller@jlab.org>
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<b>Sent:</b> Wednesday, November 20, 2024 08:18<br>
<b>To:</b> Eugene Pasyuk <pasyuk@jlab.org>; prad@jlab.org; pi0tff@jlab.org<br>
<b>Cc:</b> Christopher Guthrie <guthrie@jlab.org><br>
<b>Subject:</b> Re: Beamline Configuration Drawings for PRAD II, X17 and TFF<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Good Morning All,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Are there any comments on the layout of PRad II and X17, or do we assume the design is fixed and we can finalize the drawings and prepare to order parts?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Eugene Pasyuk <<a href="mailto:pasyuk@jlab.org">pasyuk@jlab.org</a>><br>
<b>Sent:</b> Thursday, October 31, 2024 3:33 PM<br>
<b>To:</b> <a href="mailto:prad@jlab.org">prad@jlab.org</a> <<a href="mailto:prad@jlab.org">prad@jlab.org</a>>;
<a href="mailto:pi0tff@jlab.org">pi0tff@jlab.org</a> <<a href="mailto:pi0tff@jlab.org">pi0tff@jlab.org</a>><br>
<b>Cc:</b> Bob Miller <<a href="mailto:rmiller@jlab.org">rmiller@jlab.org</a>>; Christopher Guthrie <<a href="mailto:guthrie@jlab.org">guthrie@jlab.org</a>><br>
<b>Subject:</b> Fw: Beamline Configuration Drawings for PRAD II, X17 and TFF</span>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Here are the beamline drawings for PRad/X17/TFF. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Please review and give your feedback by November 15th.<o:p></o:p></span></p>
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<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">-Eugene</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> Christopher Guthrie <<a href="mailto:guthrie@jlab.org">guthrie@jlab.org</a>><br>
<b>Sent:</b> Thursday, October 31, 2024 14:47<br>
<b>To:</b> Eugene Pasyuk <<a href="mailto:pasyuk@jlab.org">pasyuk@jlab.org</a>><br>
<b>Cc:</b> Bob Miller <<a href="mailto:rmiller@jlab.org">rmiller@jlab.org</a>><br>
<b>Subject:</b> Beamline Configuration Drawings for PRAD II, X17 and TFF</span> <o:p>
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<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Eugene,<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> I have attached .pdf’s of the Preliminary versions PRAD II, X17 and TFF Beamline Configuration Drawings. Can you please send these out to the individual run groups and request
comments by November 15<sup>th</sup>?<o:p></o:p></span></p>
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<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Regards,<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> <o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Chris Guthrie<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Hall B Senior Mech. Designer<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">(757) 269-6922<o:p></o:p></span></p>
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