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<h1 class="title">BTeam-2011-03-16</h1>
<div class="outline-2">
<h2 id="sec-1">1 8.5 weeks remaining before 6-month SAD (pending
firm budget)</h2>
</div>
<div class="outline-2">
<h2 id="sec-2">2 2011-03-16 Wed 14:00 BTeam Meeting Agenda</h2>
<div class="outline-3">
<h3 id="sec-3">2.1 Todd away editing PAC'11: Mar 21-Apr 3</h3>
Mike Spata will be acting BTeam lead for the next two weeks.
Thanks, Mike!!<br>
</div>
<div class="outline-3">
<h3 id="sec-4">2.2 Call for Strategic Priorities for BTeam</h3>
<p>Todd is soliciting input on priorities for studies before the
6
month SAD, emphasizing strategy rather than tactics. Items
currently on the list include CEBAF baseline, MO pathlength,
thesis
topics, LOCO and model-driven optics, procedure and
troubleshooting
verifications (including ORFP), and a Mott polarimeter
precision
study. Only one input since last BTeam meeting. Todd will
assemble these and circulate them for input.<br>
</p>
</div>
<div class="outline-3">
<h3 id="sec-5">2.3 Optics-on-Call Report: Yuhong/Tief =>
Balsa/Alex (Alicia over weekend)</h3>
</div>
<div class="outline-3">
<h3 id="sec-6">2.4 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-7">2.4.1 Backphase bunch length measurements:
Alicia/Reza 2011-03-09 Wed PM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10684">ATLis
10684</a>: Success, see <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573668">e1573668</a>.
Reza set up 130 kV gun settings so
the bunchlength too should work for non-experts now. There
is a desire
to follow this up later with different settings and currents
and
optimizing bunch length. More testplans to come.
</p>
</div>
<div class="outline-4">
<h4 id="sec-8">2.4.2 Arc1 optics: Arne 2011-03-09 Wed PM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10652">ATLis
10652</a>: Arc1 portion only. Success in the sense that
this was tuned
up and left in the machine, see <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573666">e1573666</a>
and <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573703">e1573703</a>
and <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573708">e1573708</a>.
PZT problems noted in <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573693">e1573693</a>.
Multiharps and fopts performed and
look reasonably clean, then ORFP was run overnight by ops.
ART++ was
later reconfigured with new injector optics, <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573808">e1573808</a>
so PZT Booster
could use proper optics.
</p>
</div>
<div class="outline-4">
<h4 id="sec-9">2.4.3 BPMs checked for future LOCO work: Pete
2011-03-10 Thu PM</h4>
<p>Pete checked the east arc BPMs that Tief had noted were
noisy in LOCO
and RayTrace tests. These were recalibrated and passed local
tests,
appear good to use, <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573816">e1573816</a>.
</p>
</div>
<div class="outline-4">
<h4 id="sec-10">2.4.4 JT valve max flow: Larry King et al
2011-03-10 Thu AM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/7874">ATLis 7874</a>:
Successful, checked to 2L21 and ATLis closed out. No
conclusions yet but should be forthcoming, see <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573854">e1573854</a>.
</p>
</div>
<div class="outline-4">
<h4 id="sec-11">2.4.5 BSY/Recombiner measurements: MikeS
2011-03-10 Thu PM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10810">ATLis
10810</a>: Completed measurements with Lambertson and
calibration
data. Successful, closed out ATLis. See <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573900">e1573900</a>
and <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573922">e1573922</a>.
</p>
</div>
<div class="outline-4">
<h4 id="sec-12">2.4.6 Injector/Hall optics, Arc1 match:
Jay/Arne/Reza et al 2011-03-11 Fri AM</h4>
<p><a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573969">e1573969</a>:
baselined fopt, installed injector match and reworked Arc1
optics from Arne, fopt, ORFP, and multiharps to check
various matches.
fopt after ORFP in <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573999">e1573999</a>,
C-S after ORFP in <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1574019">e1574019</a>.
Injector was
retuned for high current by Reza, <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1574085">e1574085</a>,
and 3C20 harp trace looked
good afterwards, <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1574098">e1574098</a>.
Good enough for weekend operations.
</p>
</div>
<div class="outline-4">
<h4 id="sec-13">2.4.7 1kHz helicity magnet commissioning: Riad
2011-03-15 Tue AM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10905">ATLis
10905</a>: Data acquired for analysis after tornado drill
in
conjunction with Hall C.
</p>
</div>
<div class="outline-4">
<h4 id="sec-14">2.4.8 Injector BLM sensitivity test: Jay
2011-03-15 Tue PM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10781">ATLis
10781</a>: Reduced voltage on 0R04, <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1574836">e1574836</a>,
but still trips at
0.64 uA. Couldn't get 0R03 to trip; 0R04 was always first to
trip.
</p>
</div>
<div class="outline-4">
<h4 id="sec-15">2.4.9 Quad centering: Ops 2011-03-15 Tue PM</h4>
<p>Quads 6A05 and 4A05 were both centered, see <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1574875">e1574875</a>.
</p>
</div>
<div class="outline-4">
<h4 id="sec-16">2.4.10 Outstanding ToDo items from previous
beam studies</h4>
<ul>
<li><span class="todo">TODO</span> Review/establish planned
12 GeV optics match procedures in<br>
spreaders/recombiners.
</li>
<li><span class="todo">TODO</span> CASA review of Arc1/Arc2
data from <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572645">e1572645</a>.<br>
</li>
<li><span class="todo">TODO</span> Discuss impact of inj
fopt correctors, cost/benefit of replacement<br>
</li>
<li><span class="todo">TODO</span> Revisit <a
href="http://cebaf.jlab.org/atlis/task/8346">ATLis 8346</a>,
PZT if parity quality deems this necessary<br>
</li>
<li><span class="todo">TODO</span> Check Ryan's availability
for HC 62MeV RayTrace measurement, analysis<br>
</li>
</ul>
</div>
</div>
<div class="outline-3">
<h3 id="sec-17">2.5 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-18">2.5.1 Measuring 0L03/0L04 and capture/quarter
transport: Yves</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/9621">ATLis 9621</a>
and <a href="http://cebaf.jlab.org/atlis/task/9622">ATLis
9622</a>. What is Yves's availability?
</p>
</div>
<div class="outline-4">
<h4 id="sec-19">2.5.2 PZT Booster resurrection: Arne et al</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10864">ATLis
10864</a>: Need Arne, Jay, Yves, or Riad present for
testing assuming
that there are still Hall C beam quality/pqrity quality
issues.
</p>
</div>
<div class="outline-4">
<h4 id="sec-20">2.5.3 Low-current BPM test: John Musson</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10890">ATLis
10890</a>: Check dynamic range of BCM/BPMs from 50-200 nA
with
good accuracy for Qweak for g2p.
</p>
</div>
<div class="outline-4">
<h4 id="sec-21">2.5.4 LOCO/Ray-Trace optics tests: Yves, Ryan,
Tief</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10708">ATLis
10708</a>: Continued optics evaluation of machine,
particularly Arc3.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-22">2.6 APEL Hall Liason Comments</h3>
<div class="outline-4">
<h4 id="sec-23">2.6.1 Hall A: Yves (on travel?)</h4>
</div>
<div class="outline-4">
<h4 id="sec-24">2.6.2 Hall B: Tief</h4>
</div>
<div class="outline-4">
<h4 id="sec-25">2.6.3 Hall C: Jay</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-26">2.7 AOB?</h3>
<div class="outline-4">
<h4 id="sec-27">2.7.1 <span class="todo">TODO</span> Injector
configuration documentation: Reza</h4>
<p>Document proper operational injector configuration (6.3 MeV
energy,
crested within 5 degrees, etc): Reza et al
</p>
<p>
======================================================================
</p>
</div>
</div>
</div>
<div class="outline-2">
<h2 id="sec-28">3 2011-03-09 Wed 14:00 BTeam Meeting Minutes</h2>
<div class="outline-3">
<h3 id="sec-29">3.1 Call for Strategic Priorities for BTeam</h3>
<p>Todd is soliciting input on priorities for studies before the
6
month SAD, emphasizing strategy rather than tactics. Items
currently on the list include CEBAF baseline, MO pathlength,
thesis
topics, LOCO and model-driven optics, procedure and
troubleshooting
verifications (including ORFP), and a Mott polarimeter
precision
study.
</p>
<div class="outline-4">
<h4 id="sec-30">3.1.1 <span class="todo">TODO</span> Send
Todd your input on or before Mon 2011-03-14</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-31">3.2 Optics-on-Call Report: Rui/Mike =>
Yuhong/Tief</h3>
<p>No calls! (Hooray.)
</p>
</div>
<div class="outline-3">
<h3 id="sec-32">3.3 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-33">3.3.1 Several Multiharps: Ops 2011-03-04 Fri
Day (opportunistic)</h4>
<p>Analysis from Jay: Injector IPM0L01 (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572606">e1572606</a>),
Arc1 IPM1E02 (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572609">e1572609</a>),
Arc2
IPM2S09 (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572610">e1572610</a>).
There is an open question from Jay in a
comparison of Arc1/Arc2 data for 12 GeV matching about
location of
harps before 2S10 and RF separation , see <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572645">e1572645</a>.
There are still
decisions to be made about diagnostics for 12 GeV optics
match
procedures. Geoff notes that "standard" CASA folks (Tief,
Yves) won't
want harps but instead will want SLMs.
Discussion of <a
href="https://cebaf.jlab.org/elog/entry/1573621">https://cebaf.jlab.org/elog/entry/1573621</a>
</p>
<ul>
<li><span class="todo">TODO</span> Review/establish planned
12 GeV optics match procedures in<br>
spreaders/recombiners.
</li>
<li><span class="todo">TODO</span> CASA review of Arc1/Arc2
data from e1572645 linked above.<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-34">3.3.2 Injector Multiharp: 2011-03-08 Tue Day
(opportunistic) ??</h4>
</div>
<div class="outline-4">
<h4 id="sec-35">3.3.3 Discussion of opportunistic multiharps
vs other tasks</h4>
<p>Q measurements, what else can be done independently by ops
at 3 AM?
Chris Slominski (acting PD) and Todd will review current
ATLis items.
e.g. simple optics check (pathlength, fopt, etc).
</p>
</div>
<div class="outline-4">
<h4 id="sec-36">3.3.4 Major maintenance day: Steve 2011-03-08
Tue Day</h4>
<p>A huge amount of maintenance work was done on Tuesday, see
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573258">e1573258</a>.
This includes many repairs of equipment from a list made a
week ago
for beam studies.
</p>
</div>
<div class="outline-4">
<h4 id="sec-37">3.3.5 BSY/Recombiner 6T corrector
measurements: MikeS 2011-03-08 Tue Day</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10810">ATLis
10810</a>: Multipole measurements in the 6T beamline.
Nearly
finished up, but will need a several more hours for
lambertson
and calibration data in a few weeks. See <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573418">e1573418</a>.
Trim card
circuit is having trouble making voltage; Sarin is working
on
board modification to give larger voltage. Mike gets 6mm,
would
prefer larger for some remaining measurements. May be able
to
run opportunistically 2011-03-09 Wed Eve.
</p>
<ul>
<li><span class="todo">TODO</span> Final measurements (~4h)
for Lambertson, calibrations (MikeS)<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-38">3.3.6 Injector fopt coupling check: Jay
2011-03-08 Tue Day</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10918">ATLis
10918</a>: See <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573295">e1573295</a>.
Some coupling has been visible in injector
fopts. Jay visually inspected the injector fopt 30Hz and
noted
that they cover 175 degrees each instead of 120 degrees, so
they
include skew components if incoming beam is not centered.
Should
we replace them with MAT correctors? Did not investigate
helicity
correctors. Arne recommends that we get this fixed during 6
mo SAD.
</p>
<ul>
<li><span class="todo">TODO</span> Discuss impact of inj
fopt correctors, cost/benefit of replacement<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-39">3.3.7 HA Fopt, HA/HC Multiharp: Ops diagnostic
2011-03-09 Wed Owl</h4>
<p>30Hz aperture scans were taken overnight (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573528">e1573528</a>)
as well
as an fopt to Hall A (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573529">e1573529</a>)
and unanalyzed Hall A and Hall C
harp scans (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573530">e1573530</a>
and <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573532">e1573532</a>).
Fopt linac BPM pass select
switch was later found set to "4.2 uS, Pass One" (<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1573617">e1573617</a>)
instead of "Auto Select Pass".
</p>
<ul>
<li><span class="todo">TODO</span> Change Fopt linac BPM
pass select switch.<br>
</li>
<li><span class="todo">TODO</span> Finish analysis,
establish conclusions about Hall A/C matches.<br>
</li>
</ul>
</div>
</div>
<div class="outline-3">
<h3 id="sec-40">3.4 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-41">3.4.1 1kHz Helicity Magnet Characterization:
Riad, Buddhini (4h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10905">ATLis
10905</a>: There is a request from Hall C to check the
parity
quality helicity magnets at the current ~1kHz switch rate.
This
is work to the inline dump at 140 uA. These magnets have not
been
used operationally in the past because they were not needed
and
because of concerns about introduction of extra
spin-correlated
systematics.
</p>
<ul>
<li><span class="todo">TODO</span> Schedule, possibly
2011-03-10 Thu in prep for Hall C return<br>
or 2011-03-15 Tue based on current PD schedule?
Opportunistic for
2011-03-09 Wed Eve?
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-42">3.4.2 PZT Resurrection and HC Parity Quality:
Arne/Yves</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10864">ATLis
10864</a>: PZT mirrors work; does PZT Booster work? Work
from
Arne and Yves on decoupling needs to be checked with beam.
Michele
notes that ART++ has not been updated with proper energy for
adiabatic damping, and may have contributed to PZT Booster
problems.
</p>
<ul>
<li><span class="todo">TODO</span> Check parity quality with
new decoupling when Hall C returns<br>
</li>
<li><span class="todo">TODO</span> Revisit <a
href="http://cebaf.jlab.org/atlis/task/8346">ATLis 8346</a>,
PZT if parity quality deems this necessary<br>
</li>
<li><span class="todo">TODO</span> Put Alex's injector
optics into ART++ for PZT Booster use (Michele)<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-43">3.4.3 BSY/Recombiner measurements: MikeS (~4h
invasive)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10810">ATLis
10810</a>: Complete measurements with Lambertson and
calibration
data. Requires at least 3-pass beam, but setup is fairly
straightforward.
</p>
<ul>
<li><span class="todo">TODO</span> Prep for this study,
likely schedule week of PAC'11 2011-03-23ish or
opportunistically<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-44">3.4.4 Injector bunch length measurements:
Alicia (3h) 2011-02-26 Sat PM</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10684">ATLis
10684</a>: Persistent 0L07 dipole overtemperature
prevented
completion. See <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1571307">e1571307</a>.
This was will have to be repeated from
the start for success.
</p>
<ul>
<li><span class="todo">TODO</span> Revisit backphase bunch
length measurements after PAC'11 (Alicia)<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-45">3.4.5 RayTrace to Hall C starting at 62 MeV:
RyanB</h4>
<ul>
<li><span class="todo">TODO</span> Check Ryan's availability
for measurement, analysis<br>
</li>
</ul>
</div>
<div class="outline-4">
<h4 id="sec-46">3.4.6 Other items based on initial strategic
priority suggestions</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-47">3.5 APEL Hall Liason Comments</h3>
<div class="outline-4">
<h4 id="sec-48">3.5.1 Hall A: Yves (on travel)</h4>
</div>
<div class="outline-4">
<h4 id="sec-49">3.5.2 Hall B: Tief</h4>
</div>
<div class="outline-4">
<h4 id="sec-50">3.5.3 Hall C: Jay</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-51">3.6 AOB?</h3>
<div class="outline-4">
<h4 id="sec-52">3.6.1 <span class="todo">TODO</span> Injector
configuration documentation: Reza</h4>
<p>Document proper operational injector configuration (6.3 MeV
energy,
crested within 5 degrees, etc): Reza et al
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-53">3.7 fopt tonight, analyze and evaluate match</h3>
<p>-1430 Reza done
1430 Backphase bunch length
1800 Fix fopt bpm setting, fopt measurement => CS
Use appropriate correctors
Install 1s, 1A, 1R optics from Arne
Check another fopt, decide which 1s, 1a, 1r optics to use
Raytrace (data acquisition, not online analysis)
2300ish
</p>
</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: 2011/03/16 13:06:03</p>
</div>
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