<div dir="ltr"><div class="gmail-gs" style="margin:0px;min-width:0px;padding:0px 0px 20px;width:auto;font-family:"Google Sans",Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:medium"><div class="gmail-"><div id="gmail-:4mp" class="gmail-ii gmail-gt gmail-adO" style="direction:ltr;margin:8px 0px 0px;padding:0px;font-size:0.875rem;overflow-x:hidden"><div id="gmail-:4mo" class="gmail-a3s gmail-aiL" style="direction:ltr;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:small;line-height:1.5;font-family:Arial,Helvetica,sans-serif;overflow:auto hidden"><div dir="ltr">Beni and all,<div><br></div><div>I just looked back in our records, and verified that the NIM article is correct, the material we are using in the TAGM is:</div><div><ol><li style="margin-left:15px">BCF-20 green scintillator for the scintillator fibers</li><li style="margin-left:15px">BCF-98 clear fiber for the light guides</li></ol><div>I was mistaken in my claim that we were using BCF-92 for the scintillating fibers.</div><div><br></div><div>That makes it more mysterious to me why the fibers have shown such a marked decline in light yield with radiation dose, as compared with blue scintillator that should be more sensitive to radiation damage. I have to look further into this.</div></div><font color="#888888"><div><br></div><div>-Richard</div></font></div></div></div><div class="gmail-WhmR8e" style="clear:both"></div></div></div><br class="gmail-Apple-interchange-newline"></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Oct 23, 2025 at 6:49 AM zihlmann via Halld-tagger <<a href="mailto:halld-tagger@jlab.org">halld-tagger@jlab.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">*External sender: This message was not sent through the UConn email system. It might be safe, but use caution before interacting with links, attachments, or requests.*<br>
<br>
<br>
Hi All,<br>
<br>
We will have a beamline meeting this morning at 10 am to continue our<br>
discussion of the tagger microscope status and plans and most importantly<br>
take decisions in preparation for the next run period.<br>
A wiki page can be found at<br>
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and we’ll meet in F326 for those at JLab.<br>
<br>
<br>
cheers,<br>
Beni<br>
_______________________________________________<br>
Halld-tagger mailing list<br>
<a href="mailto:Halld-tagger@jlab.org" target="_blank">Halld-tagger@jlab.org</a><br>
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