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<p>Hi,</p>
<p><br>
</p>
<p>Please see the message below about the start of the accelerator.
Note, that we are the second hall to be setup for beam, so we
should not expect beam on the first day in any case.</p>
<p><br>
</p>
<p>Cheers,</p>
<p>Raphael<br>
</p>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Sujet :
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<td>Fw: Update on CEBAF & Beam Restoration</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date : </th>
<td>Tue, 18 Mar 2025 11:58:09 +0000</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">De : </th>
<td>Patrick Achenbach <a class="moz-txt-link-rfc2396E" href="mailto:patricka@jlab.org"><patricka@jlab.org></a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Pour : </th>
<td>Daniel Carman <a class="moz-txt-link-rfc2396E" href="mailto:carman@jlab.org"><carman@jlab.org></a>, Stepan Stepanyan
<a class="moz-txt-link-rfc2396E" href="mailto:stepanya@jlab.org"><stepanya@jlab.org></a>, Raphael Dupre
<a class="moz-txt-link-rfc2396E" href="mailto:raphael.dupre@ijclab.in2p3.fr"><raphael.dupre@ijclab.in2p3.fr></a></td>
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All:</div>
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This results in an additional delay by some days for ALERT. </div>
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Patrick</div>
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<div dir="ltr" id="divRplyFwdMsg"><span
style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Douglas
Higinbotham <a class="moz-txt-link-rfc2396E" href="mailto:doug@jlab.org"><doug@jlab.org></a><br>
<b>Sent:</b> Tuesday, March 18, 2025 00:03<br>
<b>To:</b> Cynthia (Thia) Keppel <a class="moz-txt-link-rfc2396E" href="mailto:keppel@jlab.org"><keppel@jlab.org></a>;
Patrizia Rossi <a class="moz-txt-link-rfc2396E" href="mailto:rossi@jlab.org"><rossi@jlab.org></a>; Mark Kevin Jones
<a class="moz-txt-link-rfc2396E" href="mailto:jones@jlab.org"><jones@jlab.org></a>; Robert Michaels <a class="moz-txt-link-rfc2396E" href="mailto:rom@jlab.org"><rom@jlab.org></a>;
Patrick Achenbach <a class="moz-txt-link-rfc2396E" href="mailto:patricka@jlab.org"><patricka@jlab.org></a>; Eugene Chudakov
<a class="moz-txt-link-rfc2396E" href="mailto:gen@jlab.org"><gen@jlab.org></a><br>
<b>Cc:</b> Eduard Pozdeyev <a class="moz-txt-link-rfc2396E" href="mailto:pozdeyev@jlab.org"><pozdeyev@jlab.org></a>; Simona
Malace <a class="moz-txt-link-rfc2396E" href="mailto:simona@jlab.org"><simona@jlab.org></a><br>
<b>Subject:</b> Update on CEBAF & Beam Restoration</span>
<div> </div>
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<p
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style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">Since I am in CA likely won’t be at
the 9:30 ET division meeting, so wanted to give you a quick
update on when the earliest to expect the beam is.</span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">I have received messages from Eduard
and discussed on the phone where we are with the PD, Simona.
I have also cc’d them on this message in case they want to add
any details.</span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">The high-level message is that RF
recovery of cavities as well as getting new modules ready for
operations has taken longer than expected. This means the
machine (both NL and SL) is still under 1060 MeV/linac that
we would like to run at. As soon as 1L09 is ready, NL
should be in good shape. SL needs numerous cavities to be
recovered. We are slowed at this point by limited spare
parts with repaired boards are going in nearly as fast as they
can be fixed.</span></p>
<p
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style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">The bottom line is the earliest we
should expect beam for physics is Wednesday (March 26<sup>th</sup>).
</span></p>
<p
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style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">As beam is close, it would be good
for the RC’s to stay in touch with the PD. I would
encourage them ( especially C and D since they start the
program), to start going to 7:45 meeting to stay informed as
we seem to be closing in on first beam to the halls, even if
it isn’t quite as fast as we would have liked.</span></p>
<p
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style="font-size: 11pt;"> </span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">Best Wishes from California,</span></p>
<p
style="margin: 0in; font-family: Aptos, sans-serif; font-size: 12pt;"><span
style="font-size: 11pt;">Douglas</span></p>
<p
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style="font-size: 11pt;"> </span></p>
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