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<title>B-team Meeting Agenda (2:00pm Wednesday MCC conf. room)</title>
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<h1 class="title">B-team Meeting Agenda (2:00pm Wednesday MCC conf.
room)</h1>
<div id="outline-container-1" class="outline-2">
<h2 id="sec-1"><span class="section-number-2">1</span> <span
class="timestamp-wrapper"> <span class="timestamp">2009-10-28 Wed
14:00</span></span> Agenda </h2>
<div class="outline-text-2" id="text-1">
</div>
<div id="outline-container-1.1" class="outline-3">
<h3 id="sec-1.1"><span class="section-number-3">1.1</span> New BEM
release <span class="tag"><span class="Chris">Chris</span></span></h3>
<div class="outline-text-3" id="text-1.1">
<p>Chris will describe the new BEM tool, including:
</p>
<ol>
<li>Bugs/issues with old BEM
</li>
<li>New features, discussion of GOFF handling
</li>
</ol>
<ul>
<li id="sec-1.1.1">Summary of discussion <br>
BTeam approved new tool. Chris will create an ATLIS and install this
week. </li>
</ul>
</div>
</div>
<div id="outline-container-1.2" class="outline-3">
<h3 id="sec-1.2"><span class="section-number-3">1.2</span> Beam Parity
Quality during Happex-III <span class="tag"><span class="Riad">Riad</span> <span
class="Happex">Happex</span></span></h3>
<div class="outline-text-3" id="text-1.2">
<p>Brief (5-min) summary of the beam parity quality during Happex-III
</p>
<ul>
<li id="sec-1.2.1">Summary of discussion <span class="tag"><span
class="ATTACH">ATTACH</span></span><br>
As far as PQB, we met all of Happex-III's requirements. Same basic PQB
requirements for PVDIS. Requirements tighten considerably for next
year's PREx (and QWeak) Attached is Riad's short presentation.
</li>
</ul>
</div>
</div>
<div id="outline-container-1.3" class="outline-3">
<h3 id="sec-1.3"><span class="section-number-3">1.3</span> Hall-A </h3>
<div class="outline-text-3" id="text-1.3">
<p>Continue discussion of Hall-A parity setup. Review new match data
with raytrace data. Fast feedback issues. Feed forward to the
upcoming 5-pass PVDIS setup.
</p>
<ul>
<li id="sec-1.3.1">Summary of discussion <br>
<a href="http://opsweb.acc.jlab.org/CSUEApps/elog/3-0/entry/1494245">Match
calculated on Friday</a> was loaded Saturday Owls. No harm done.
Stability improved after <a
href="http://opsweb.acc.jlab.org/CSUEApps/elog/3-0/entry/1494280">match
loaded</a>. 20% decrease in Compton counts
and FFB working now. Not claiming that these effects were because of
match, but we can claim that the effects occurred in spite of the
match.
<p>Michele has sent BTeam an email with twiss plots and elog
entries
</p>
</li>
<li id="sec-1.3.2">Follow up <br>
After the plots were fixed, the beam size is under control (less than
200 μ m) in both the
match and raw elegant displays. </li>
</ul>
</div>
</div>
<div id="outline-container-1.4" class="outline-3">
<h3 id="sec-1.4"><span class="section-number-3">1.4</span> Energy
Change plan <span class="tag"><span class="Yan">Yan</span></span></h3>
<div class="outline-text-3" id="text-1.4">
<p>Energy change to 6.068 GeV scheduled for Monday?
Note: Hall-A will want as much current as the target cooling can
handle. LEM should be performed with 700 μ A linac currents.
</p>
</div>
</div>
<div id="outline-container-1.5" class="outline-3">
<h3 id="sec-1.5"><span class="section-number-3">1.5</span> Beam Studies
coincident with Gun Bake </h3>
<div class="outline-text-3" id="text-1.5">
<ul>
<li id="sec-1.5.1">Bake date? To be determined. <br>
</li>
<li id="sec-1.5.2">Gun bake and recessiate <span class="tag"><span
class="SOURCE">SOURCE</span></span><br>
</li>
<li id="sec-1.5.3">MO Δ f for 12 GeV <span class="tag"><span
class="Tief">Tief</span></span><br>
</li>
</ul>
</div>
</div>
<div id="outline-container-1.6" class="outline-3">
<h3 id="sec-1.6"><span class="section-number-3">1.6</span> Injector
Changes </h3>
<div class="outline-text-3" id="text-1.6">
<p>The two wien modification is scheduled for the Winter2010 down. Part
of the change includes the following decisions:
</p>
<ol>
<li>Remove the 60Hz suppression correctors. These correctors were no
longer connected to a source/controller.
</li>
<li>Use the 500 keV harp controls to drive the <b>new</b> harp at
the 2nd
Wien girder. The 500 keV harp has not provided the information we
wanted at the 500 keV region due to unknown magnetic elements
between the solenoid and harp.
</li>
</ol>
</div>
</div>
<div id="outline-container-1.7" class="outline-3">
<h3 id="sec-1.7"><span class="section-number-3">1.7</span>
Optics-on-Call Summary </h3>
<div class="outline-text-3" id="text-1.7">
<ul>
<li id="sec-1.7.1">Adminstration <br>
<dl>
<dt>Outgoing</dt>
<dd>Yves Roblin
</dd>
<dt>Incoming</dt>
<dd>Byung Yunn
</dd>
</dl>
</li>
<li id="sec-1.7.2">Machine Status <br>
<ul>
<li id="sec-1.7.2.1">Two power outages in one week <br>
Presently, ( <span class="timestamp-wrapper"> <span class="timestamp">2009-10-27
Tue 07:37</span></span>) we are recovering from the second
inside the fence power outage in two weeks. How this will impact the
schedule is still to be determined.
</li>
</ul>
</li>
<li id="sec-1.7.3">Scheduled program <br>
<p>
Somewhat tentative due to ongoing recovery from power outage. Still
awaiting official word on date for energy change from 5.7 GeV to 6.07
GeV.
</p>
<ul>
<li>ESR T1 turbine swap Thursday ( <span
class="timestamp-wrapper"> <span class="timestamp">2009-10-29 Thu</span></span>)
</li>
<li>ESR QWeak heat exchanger tests Fri-Sat ([2009-10-30
Fri]– <span class="timestamp-wrapper"> <span class="timestamp">2009-10-31
Sat</span></span>)
</li>
<li>Hall-B pass change from 1-pass to 5-pass.
</li>
<li>Energy change to 6.068 GeV on Monday ( <span
class="timestamp-wrapper"> <span class="timestamp">2009-11-02 Mon</span></span>)
</li>
<li>Gun bake/activation on Monday Swing and Owl
( <span class="timestamp-wrapper"> <span class="timestamp">2009-11-02
Mon</span></span>– <span class="timestamp-wrapper"> <span
class="timestamp">2009-11-03 Tue</span></span>) </li>
<li>MO Δ f coincident with gun bake
</li>
<li>Hall-A PVDIS experiment start Tuesday ( <span
class="timestamp-wrapper"> <span class="timestamp">2009-11-03 Tue</span></span>)
</li>
<li>As beam current ramps up to near 100 μ A, the FEL will have
to
been turned off to stay within the CHL capacity.
</li>
</ul>
</li>
</ul>
</div>
</div>
</div>
<div id="postamble">
<p class="date"> Date: 2009-10-30 09:50:53 EDT</p>
<p class="creator">HTML generated by org-mode 6.32trans in emacs 23</p>
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<pre class="moz-signature" cols="72">--
Arne Freyberger
Director Operations Department
Jefferson Lab Phone: (757) 269-6268
12000 Jefferson Avenue Pager: (757) 584-6268
Newport News, VA 23606 Email: <a class="moz-txt-link-abbreviated" href="mailto:freyberg@jlab.org">freyberg@jlab.org</a>
</pre>
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