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Good afternoon,
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<div class="">If more are “up for grab”, I would definitely be interested to get some, too.</div>
<div class="">These could be useful for positron detection and energy measurement for low-energy positron production R&D.</div>
<div class="">A 3x3 or up to 5x5 matrix would be great to have, with PMTs.</div>
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<div class="">Thank you,</div>
<div class=""> Michael</div>
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<div>==============================</div>
<div>Dr. Michael Kohl</div>
<div>Interim Chair</div>
<div>Joint Professor and Staff Research Scientist</div>
<div>Physics Department, Hampton University, Hampton, VA 23668, USA</div>
<div>Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606, USA</div>
<div>Phone: +1-757-727-5153 (HU office)</div>
<div><a href="mailto:kohlm@jlab.org" class="">Email: kohlm@jlab.org</a></div>
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<div class="">On Oct 8, 2025, at 3:01 PM, Cynthia (Thia) Keppel via Sbs <<a href="mailto:sbs@jlab.org" class="">sbs@jlab.org</a>> wrote:</div>
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Hi Jim,</div>
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This sounds fine to me - ok, Mark?</div>
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Best,</div>
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Thia</div>
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<div style="margin-top: 0px; margin-bottom: 0px; direction: ltr;" class=""><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;" class="">Cynthia Keppel, PhD</span></div>
<div style="margin-top: 0px; margin-bottom: 0px; direction: ltr;" class=""><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;" class="">Associate Director for Physics<br class="">
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<div style="margin-top: 0px; margin-bottom: 0px; direction: ltr;" class=""><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;" class="">Thomas Jefferson National Accelerator Facility</span></div>
<div style="margin-top: 0px; margin-bottom: 0px; direction: ltr;" class=""><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;" class="">1-757-269-7580</span></div>
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<font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Sbs <<a href="mailto:sbs-bounces@jlab.org" class="">sbs-bounces@jlab.org</a>> on behalf of Jim Napolitano via Sbs <<a href="mailto:sbs@jlab.org" class="">sbs@jlab.org</a>><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Wednesday, October 8, 2025 1:02 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Mark Kevin Jones <<a href="mailto:jones@jlab.org" class="">jones@jlab.org</a>><br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span>Bogdan Wojtsekhowski via Sbs <<a href="mailto:sbs@jlab.org" class="">sbs@jlab.org</a>><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>[Sbs] [EXTERNAL] ECAL detectors</font>
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Hi Mark,
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<div class="">I was meeting with Don this morning, and he mentioned that the ECAL detectors from GEp are going to be put in storage and eventually trashed.</div>
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<div class="">I would love to get several of those blocks, with PMTs, for my undergraduate advanced lab course. I’d use them for a muon decay experiment, better than what I have now. We are already replacing the electronics with a CAEN desktop digitizer, big
improvement over what we had before, but the detector is still substandard.</div>
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<div class="">I can handle the transport, and the high voltage and other electronics. Also, Bogdan tells me that at least ten blocks available (that have not been exported to radiation.)</div>
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<div class="">Can we make this happen? I am happy to do whatever paperwork and legwork is necessary.</div>
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<div class="">Thanks,</div>
<div class="">Jim</div>
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