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</style>BTeam -<br>
<br>
Here is the BTeam agenda for today, and a copy of last week's
minutes. We should plan to prioritize modest study time for tomorrow
and next Tuesday depending on study time availability since high
current setup took a bite out of ABUs yesterday.<br>
<br>
-Todd<br>
<h1 class="title">BTeam-2011-01-12</h1>
<div class="outline-2">
<h2 id="sec-1">1 2011-01-12 Wed 14:00 BTeam Meeting Agenda</h2>
<div class="outline-3">
<h3 id="sec-2">1.1 Optics-on-Call Report: Jay</h3>
<p>A long week returning to hall C high current.
</p>
</div>
<div class="outline-3">
<h3 id="sec-3">1.2 Optics-on-Call schedule: Todd</h3>
The usual <a
href="http://opsweb.acc.jlab.org/CSUEApps/weboncall/groupSchedule.html?Optics">website
is here</a> for Web On Call for Optics. I plan to
keep this 7-team rotation (changing at BTeam meeting) until the
summer down, though we may add an extra team to bring Vasily
Morozov on board. Teams may also swap coverage with consensus of
both teams.<br>
<ul>
<li>Jan 12-19 (USPAS) Mike Spata/Ryui</li>
<li>Jan 19-26 (USPAS) Yuhong/Tief</li>
<li>Jan 26-Feb 2 Byung/Yves</li>
<li>Feb 2-Feb 9 AlexB/Balsa (or Vasily)</li>
<li>Feb 9-Feb 16 Geoff/Shahid</li>
<li>Feb 16-Feb 23 Alicia/Reza</li>
<li>Feb 23-Mar 2 Jay/Todd
</li>
</ul>
</div>
<div class="outline-3">
<h3 id="sec-4">1.3 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-5">1.3.1 Mott Measurements: Grames/Suleiman</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10588">ATLis
10589</a>: Completed characterization of new detectors
after
shutdown installation, spin rotator checkout.
</p>
</div>
<div class="outline-4">
<h4 id="sec-6">1.3.2 Qweak Injector Studies/Parity Quality
Check: Dalton</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10625">ATLis
10625</a>: Shifted to Thursday owl 2010-01-06 at Mark's
request.
But also should be revisited at high current.
</p>
</div>
<div class="outline-4">
<h4 id="sec-7">1.3.3 Backphasing Bunch Length Measurement
@100kV: Hofler</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10684">ATLis
10684</a>: Abbreviated version performed 2011-01-11 as
part of
high current restoration. Modifications made to test plan
for
future testing. Should be measured again before we leave 100
kV
injector voltage.
</p>
</div>
<div class="outline-4">
<h4 id="sec-8">1.3.4 Pathlength vs MOmod: Benesch</h4>
<p>Studied during day 2010-01-05 during setup. NL response
seems to
be about 80% of SL. Haven't looked at owl MOmod. Looks like
20 mV/deg
in NL, 25 mV/deg in SL, different than last measurement.
Will continue
to evaluate. Further comment?
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-9">1.4 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-10">1.4.1 LOCO Model Calibration Tests in ARC3:
Roblin</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10700">ATLis
10700</a>: Yves has compared some of his measurements in
ARC9
from the 2010-12-23 <a
href="https://cebaf.jlab.org/atlis/task/10511">ATLis 10511</a>
to current and historical MQA
curves; they show some discrepancies worth investigating
with
more measurements in other arcs. Another method is in
development
to handle non-FODO quad distributions in arcs 1 and 2.
</p>
</div>
<div class="outline-4">
<h4 id="sec-11">1.4.2 Determine multiharp masking requirements
in tune/CW: Benesch</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10647">ATLis
10647</a>: New ATLis, not scheduled yet. Mainly hall C.
</p>
</div>
<div class="outline-4">
<h4 id="sec-12">1.4.3 Prebuncher control module swap, injector
retune</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10508">ATLis
10508</a>: To reduce 9.5 kHz noise when running prebuncher
above 2. This ATLis does not seem strongly motivated until
we
go back to high injector voltage.
</p>
<ul>
<li><span class="todo">TODO</span> Should investigate now
we're at 100 kV w/lower prebuncher setting.<br>
</li>
</ul>
</div>
</div>
<div class="outline-3">
<h3 id="sec-13">1.5 Arc Diagnostics: Benesch</h3>
<div class="outline-4">
<h4 id="sec-14">1.5.1 <span class="todo">TODO</span> Analyze
raw harp profile data and write up recommendations.</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-15">1.6 12GeV Pathlength Requirements Status:
Tiefenback</h3>
<div class="outline-4">
<h4 id="sec-16">1.6.1 <span class="todo">TODO</span> Need
conclusions document.</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-17">1.7 AOB?</h3>
<p>
======================================================================
</p>
</div>
</div>
<div class="outline-2">
<h2 id="sec-18">2 2011-01-05 Wed 14:00 BTeam Meeting Agenda</h2>
<div class="outline-3">
<h3 id="sec-19">2.1 Optics-on-Call Report: Benesch<br>
</h3>
<p>Some bumps, but went away after post-new-optics magnet cycle.
To get round spots on sync light monitors, Yan had to tune up
injector optics by hand, ~10% changes. Still need to look at
fopt with injector excitation from earlier this AM; has
injector
excitation been reconnected?
</p>
</div>
<div class="outline-3">
<h3 id="sec-20">2.2 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-21">2.2.1 Arc9 Transport using LOCO Methods:
Roblin</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10511">ATLis
10511</a>: Completed on 12/23. Draft results look
promising,
delivered in PDF and at CASA weekly 1/5. Yves presented some
of
his PDF slides at the BTeam meeting too. This approach
measures
many difference orbits from many correctors, and adjusts
model
quad/dipole gradient families and BPM gains to match
measurement.
</p>
<ul>
<li><span class="todo">TODO</span> Questions about whether
we can cross-compare arc/linac BPMs,<br>
check recombiner gradients, which do not seem to be in
families.
Yves will also work on algorithm for improved method
similar to
RayTrace. Plan for new measuements for gradient curves,
compare
to Jay's spreadsheet/CED. Estimate is ~1h/measurement/arc.
Meet
early next week.
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-22">2.2.2 Mott Measurements and Detector Swap:
Grames</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10588">ATLis
10588</a> and <a
href="https://cebaf.jlab.org/atlis/task/10588">ATLis 10587</a>:
Completed 12/23 day after shutdown
of rest of facility except for NL using 100 kV PS.
</p>
</div>
<div class="outline-4">
<h4 id="sec-23">2.2.3 Qweak Injector Studies: Mark Dalton</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10625">ATLis
10625</a>: Shifted to Thursday owl 2010-01-06 at Mark's
request.
</p>
</div>
<div class="outline-4">
<h4 id="sec-24">2.2.4 Arc 1/2 New Optics 2010-01-03: Arne</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10652">ATLis
10652</a>: for new arc optics from Arne.
ORFP before/after installing new arc optics OWLs Tue-Wed Jan
4-5.
Some process bugs resolved, arc 1 looked pretty good, Arc 2
did
not in vertical. Backed out after FOPT. Arne has plan to
refit,
respecting Valeri's optics, in 2S triplet/quadruplet region.
Arne doesn't touch extraction quads in any of these fits.
</p>
</div>
<div class="outline-4">
<h4 id="sec-25">2.2.5 Pathlength vs MOmod: Benesch</h4>
<p>Studied during day 2010-01-05 during setup. NL response
seems to
be about 80% of SL. Haven't looked at owl MOmod. Looks like
20 mV/deg
in NL, 25 mV/deg in SL, different than last measurement.
Will continue
to evaluate.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-26">2.3 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-27">2.3.1 Mott Measurements: Grames/Suleiman (~2h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10588">ATLis
10589</a>: Complete characterization of new detectors
after
shutdown installation, spin rotator checkout.
</p>
</div>
<div class="outline-4">
<h4 id="sec-28">2.3.2 Qweak Injector Studies/Parity Quality
Check: Mark Dalton</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10625">ATLis
10625</a>: Shifted to Thursday owl 2010-01-06 at Mark's
request.
But also should be revisited at high current.
</p>
</div>
<div class="outline-4">
<h4 id="sec-29">2.3.3 Prebuncher control module swap, injector
retune</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10508">ATLis
10508</a>: To reduce 9.5 kHz noise when running prebuncher
above 2. Was planned for 12/16. Not done; deferred to when?
Not good confidence in spare; looks different physically.
This ATLis does not seem strongly motivated until we go back
to high injector voltage.
</p>
<ul>
<li><span class="todo">TODO</span> Should investigate now
we're at 100 kV w/lower prebuncher setting.<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-30">2.3.4 Determine multiharp masking requirements
in tune/CW: Benesch<br>
</h4>
<p><a href="https://cebaf.jlab.org/atlis/task/10647">ATLis
10647</a>: New ATLis, not scheduled yet. Mainly hall C.
</p>
</div>
<div class="outline-4">
<h4 id="sec-31">2.3.5 Tuesday 2011-01-11: (Test plans to be
prepped)</h4>
<p>Reza: 2-3h high current setup
Tomasz Plawski: pre-buncher hardware calibration ~1-2h
Alicia: Backphasing bunch length measurement @100kV, ~2h
MikeS: Targeting 22nd for kicker commissioning, ready for
beam afterwards
MikeS: Have ~2h of work to do in Arc1, will prep test plan
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-32">2.4 Facility rad surveys, activation before
shutdown: Yan</h3>
<div class="outline-4">
<h4 id="sec-33">2.4.1 <span class="todo">TODO</span> Discuss
rad surveys, hot spots from just before shutdown.</h4>
<p>NL rad survey 12/23 shows some elevated radiation areas,
e.g. 1L26/27/28
Survey 12/22 shows everything clean but end of NL marked as
"hot spot"
SL rad survey on 12/23 also shows some activation between
22-23.
This was when we went from 130 kV to 100 kV; after that
switch beam
archiver shows quite ugly; beam to hall A and Yves's test
plan?
FOPT on 12/22 1800 clean. Elog shows vacuum getting
progressively
worse from 12/22-23 – linac steering correction in 8R
helped. Match
probably needed redo from injector into NL after 130->100
kV change.
FOPT probably wouldn't have shown injector mismatch. This
seems to
imply that changing injector voltage requires a rematch. Use
relative
BLM screens and compare before/after.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-34">2.5 Arc Diagnostics: Benesch</h3>
<div class="outline-4">
<h4 id="sec-35">2.5.1 <span class="todo">TODO</span> Analyze
raw harp profile data and write up recommendations.</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-36">2.6 12GeV Pathlength Requirements Status:
Tiefenback</h3>
<div class="outline-4">
<h4 id="sec-37">2.6.1 <span class="todo">TODO</span> Need
conclusions document.</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-38">2.7 AOB?</h3>
<div class="outline-4">
<h4 id="sec-39">2.7.1 <span class="todo">TODO</span> Need
volunteers for Sat 2011-01-22 USPAS afternoon tours</h4>
<p>Michele and Jay have volunteered (2010-12-22 meeting); CASA
folks
have been surveyed for volunteers.
</p>
</div>
</div>
</div>
<div id="postamble">
<p class="author"> Author: Todd Satogata
<a href="mailto:satogata@Todd-Satogatas-MacBook-Pro.local"><satogata@Todd-Satogatas-MacBook-Pro.local></a>
</p>
<p class="date"> Date: 2011/01/12 12:50:38</p>
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