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<h1 class="title">BTeam-2011-04-27</h1>
<div class="outline-2">
<h2 id="sec-1">1 2.5 weeks (?) remaining before 6-month SAD</h2>
</div>
<div class="outline-2">
<h2 id="sec-2">2 Shifting towards strategic planning, reports;
planning for 6-month SAD recovery</h2>
</div>
<div class="outline-2">
<h2 id="sec-3">3 2011-04-20 Wed 14:00 BTeam Meeting Agenda</h2>
<div class="outline-3">
<h3 id="sec-4">3.1 Strategic Priorities for BTeam</h3>
<div class="outline-4">
<h4 id="sec-5">3.1.1 <span class="todo">TODO</span> Mott
polarimeter precision (in progress)</h4>
</div>
<div class="outline-4">
<h4 id="sec-6">3.1.2 <span class="todo">TODO</span>
Pathlength Correction with MO (in progress)</h4>
</div>
<div class="outline-4">
<h4 id="sec-7">3.1.3 <span class="todo">TODO</span>
ORFP/Troubleshooting Guide Update</h4>
</div>
<div class="outline-4">
<h4 id="sec-8">3.1.4 <span class="done">DONE</span> CEBAF
baseline</h4>
</div>
<div class="outline-4">
<h4 id="sec-9">3.1.5 <span class="done">DONE</span>
LOCO/RayTrace data, improvements</h4>
</div>
<div class="outline-4">
<h4 id="sec-10">3.1.6 <span class="done">DONE</span> Optics
machine/model improvements</h4>
</div>
<div class="outline-4">
<h4 id="sec-11">3.1.7 <span class="done">DONE</span>
Additional bunchlength measurement, optimization</h4>
</div>
<div class="outline-4">
<h4 id="sec-12">3.1.8 <span class="done">DONE</span> Support
of current experiments</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-13">3.2 Optics-on-Call Report: Rui/MikeS =>
Yuhong/Tief</h3>
<p>One call on Sat AM, recurring theme re high current delivery,
resolved by
adjusting injector module gradients. In long term zone 3 needs
work. Another
minor issue was a quad off loop: when there are transport
problems, always
check loop status of quads before calling optics!
</p>
</div>
<div class="outline-3">
<h3 id="sec-14">3.3 Updates</h3>
<ul>
<li><span class="todo">TODO</span> Generate specs for golden
zero rels (perhaps not just injector), while not<br>
too overly complicating the matter; involve MattB/controls
in discussion. This
also may include configuration of which beam is used. Mike
McCaughan will be
sending out a request for comments/input.
</li>
<li><span class="todo">TODO</span> 0R04 diagnostic BLM is
installed but apparently not working; repair?<br>
Rich Wright reports that they looked again and there was
some activity.
Could have been deferred software update. Needs further
investigation,
no correlation between 0R04 MPS trips and diagnostic BLM
readings. Could
be a busted diode.
</li>
</ul>
</div>
<div class="outline-3">
<h3 id="sec-15">3.4 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-16">3.4.1 <span class="done">DONE</span> Measure
6T Kicker response vs. frequency III: Mike Spata (6h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11002">ATLis
11002</a>: Measured four magnets Thu 2011-04-14 <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579268">e1579268</a>
out to 120 Hz
with new trim cards. Prepared for beam studies Tue
2011-04-19 (deferred due to
maintenance/repair). Ready to go Thu 2011-04-21. Power dip
that day, but
resolved and mostly completed. <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1580544">e1580544</a>,
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1580690">e1580690</a>.
Tief notes that the MUX
was in the wrong state after the power outage.
</p>
</div>
<div class="outline-4">
<h4 id="sec-17">3.4.2 <span class="done">DONE</span> (Arc4/6)
LOCO/RayTrace 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 Arc7.
Done Tue 2011-04-05 <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1577866">e1577866</a>,
included LOCO measurements and various
RayTrace measurements from Ryan. Two RayTrace sets, one
baseline and one
in support of LOCO, measuring with various quad settings
early in transport.
Some occasional beam loss problems. Yves is presently
analyzing data for LOCO;
Ryan is presently analyzing data for RayTrace. Acquired data
Tue 2011-04-26
for Arc 4/6 baseline before 6 month SAD H-steel magnet
retrofit.
</p>
<ul>
<li><span class="todo">TODO</span>: Discuss Arc2 plans with
Yves, summarize data set<br>
</li>
</ul>
</div>
</div>
<div class="outline-3">
<h3 id="sec-18">3.5 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-19">3.5.1 <span class="todo">TODO</span> Improved
bunch length measurements with HV gun: Reza (4h)</h4>
<p>(No ATLis yet): ~2h in injector to test new settings for
bunch length measurement
tool at 130 kV. If this works, we'll have a reliable bunch
length tool for
October startup. Planned from last week for Thu 2011-04-28
in conjunction with
2L22A DP React. Michele has given Reza tools to change
config parameters in the
program himself, and will work with Reza on this study.
</p>
</div>
<div class="outline-4">
<h4 id="sec-20">3.5.2 <span class="todo">TODO</span> Mott TOF
detection technique/BFM development: Matt/Joe/Musson (4h+)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11042">ATLis
11042</a>: Should be ready for Tue 2011-05-03 after
channel repair.
</p>
</div>
<div class="outline-4">
<h4 id="sec-21">3.5.3 <span class="todo">TODO</span>
Stripline BPM IPM1L27C electronics: Musson/Keith Cole/Trent
Allison (~2h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11025">ATLis
11025</a>: Bumped to Thu 2011-05-05. Need to test low
current (~10nA),
single-pass beam to BSY, stripline with new electronics to
establish low-current
threshold. Musson reports this item is not complete and can
use a little more
time. He's available on Tue 2011-05-03 when he is already in
for BFM above.
</p>
</div>
<div class="outline-4">
<h4 id="sec-22">3.5.4 <span class="todo">TODO</span> Measure
6T Kicker response vs. frequency IV: Mike Spata (4h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11123">ATLis
11123</a>: Recovers some data corrupted due to power
issues in earlier study.
Suggested for Thu 2011-05-05 (Happy Cinco de Mayo!).
</p>
</div>
<div class="outline-4">
<h4 id="sec-23">3.5.5 <span class="todo">TODO</span> RF
System Power Demand/LEM: Jay (1h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11027">ATLis
11027</a>: Requires high current to both halls A/C. May be
in conflict
with potential HDIce/Hall B startup. Needs ops clearance.
High PASKR items
include injector and 1L11. Will return to economizing at a
future BTeam.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-24">3.6 6 Month SAD Items: Upcoming</h3>
<div class="outline-4">
<h4 id="sec-25">3.6.1 2011-05-04: Injector zero rels
management: Mike McCaughin</h4>
</div>
<div class="outline-4">
<h4 id="sec-26">3.6.2 2011-05-11: C100 BBU/low energy/Hall C:
Todd/Shahid/Ilkyoung</h4>
</div>
<div class="outline-4">
<h4 id="sec-27">3.6.3 ?: Quad centering/beam-based alignment
(Concern from Spata)</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-28">3.7 6 Month SAD Items: This Week</h3>
<div class="outline-4">
<h4 id="sec-29">3.7.1 Frequency-agile MO (FRAGMO) test
plan/considerations: Tief</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11122">ATLis
11122</a>: Remote frequency control of MO restored Tue
2011-04-26, see
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1601146">e1601146</a>
and <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1601147">e1601147</a>.
Don't touch it!
</p>
</div>
<div class="outline-4">
<h4 id="sec-30">3.7.2 CED update: Michele</h4>
<ul>
<li>Website is <a href="http://ced.jlab.org/">http://ced.jlab.org/</a>
, current session workspace is LIVE<br>
<ul>
<li>System is browsable, information includes survey
(SOF and GOF), design settings<br>
</li>
<li>Also includes some design derived data such as
design optics<br>
</li>
<li>ModeledAs lists how elements are modeled in elegant
(not Optim)<br>
</li>
<li>Marie working on tool to produce lattice files from
CED, useful for beamline design<br>
</li>
</ul>
</li>
<li>Current systems that are almost complete in CED include
magnets, RF, BPMs<br>
<ul>
<li>Systems coming during six month SAD include harps,
viewers<br>
</li>
<li>Six month SAD will also include application
conversions to use CED, including IEE<br>
</li>
<li>One goal before 6mo SAD was to have RF parameters in<br>
<ul>
<li>BPMs and RF are in CED but not in production
database yet<br>
</li>
<li>Developers have their own database, and that
will go into production database<br>
</li>
<li>So as of end of run, magnets/BPMs/RF will be
fully populated<br>
</li>
</ul>
</li>
</ul>
</li>
<li>When wanting to add new information to CED, there are
two things to keep in mind!<br>
<ul>
<li>How is the information initially populated? (It
better be initially populated.)<br>
</li>
<li>Who will maintain the information, and what's the
procedure for maintaining it?<br>
</li>
<li>These maintainers are all identified for magnets,
BPMs, and RF<br>
</li>
</ul>
</li>
<li>Those with little apps should get, e.g., BPM lists from
CED now<br>
<ul>
<li>There are at least four language interfaces to CED
to get the data you might want<br>
</li>
</ul>
</li>
<li>No apertures yet, but open to ideas from bright CASA
folks<br>
</li>
<li>Geoff notes current work by Ilkyoung on low-energy RF
transport models to be included<br>
<p>
======================================================================
BTeam
Meeting Notes Agenda 2010-04-20
</p>
</li>
</ul>
</div>
</div>
</div>
<div class="outline-2">
<h2 id="sec-31">4 3.5 weeks (?) remaining before 6-month SAD
(pending firm budget!!)</h2>
</div>
<div class="outline-2">
<h2 id="sec-32">5 Shifting towards strategic planning, reports;
planning for 6-month SAD recovery</h2>
</div>
<div class="outline-2">
<h2 id="sec-33">6 2011-04-20 Wed 14:00 BTeam Meeting Agenda</h2>
<div class="outline-3">
<h3 id="sec-34">6.1 Strategic Priorities for BTeam</h3>
<div class="outline-4">
<h4 id="sec-35">6.1.1 <span class="todo">TODO</span> CEBAF
baseline</h4>
</div>
<div class="outline-4">
<h4 id="sec-36">6.1.2 <span class="todo">TODO</span> Mott
polarimeter precision</h4>
</div>
<div class="outline-4">
<h4 id="sec-37">6.1.3 <span class="todo">TODO</span>
ORFP/Troubleshooting Guide Update </h4>
</div>
<div class="outline-4">
<h4 id="sec-38">6.1.4 <span class="todo">TODO</span>
Pathlength Correction with MO</h4>
</div>
<div class="outline-4">
<h4 id="sec-39">6.1.5 <span class="done">DONE</span>
LOCO/RayTrace data, improvements</h4>
</div>
<div class="outline-4">
<h4 id="sec-40">6.1.6 <span class="done">DONE</span> Optics
machine/model improvements</h4>
</div>
<div class="outline-4">
<h4 id="sec-41">6.1.7 <span class="done">DONE</span>
Additional bunchlength measurement, optimization</h4>
</div>
<div class="outline-4">
<h4 id="sec-42">6.1.8 <span class="done">DONE</span> Support
of current experiments</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-43">6.2 Optics-on-Call Report: Todd/Jay =>
Rui/MikeS</h3>
<p>Ops went to the highest polarized current out of CEBAF yet on
Day Thu 2011-04-14,
>260 uA (>160 uA Hall C, >90 uA Hall A), and seemed
to run well that way until Hall C
vacuum problems and storm/power issues. Is injector stability
still an issue? It
seems that injector steering is still the most sensitive knob,
and that prebuncher
phase adjustments are falling out of favor. 0R04 trips seem to
be limiting; Clyde
and Jay have an <a
href="http://cebaf.jlab.org/atlis/task/11084">ATLis 11084</a>
to investigate injector RF loading at the high current.
</p>
<p>
Geoff notes that >300 uA was run out of the injector for 1d
"years and years ago".
</p>
<p>
There are some open questions in email about injector orbit
management between running
a single hall or both halls. See Jay's BTeam email for
details, particularly noting
a difference between Hall A/C beams at the BPM near A2. Joe
notes that mirror for
the parity violation experiment is disconnected (e.g. was A
for PREX, C for QWeak).
Matt notes a mystery: Hall A QE was reading mysteriously high
again (similar to an
incident where the table was hypothetically bumped months
ago), but was realigned
on Tuesday 2011-04-19 to realign relative to Halls B/C.
</p>
<p>
Arne: How do we know which is the golden injector zero rels?
(e.g. from Joe or Reza).
Guidance to operations depends on what makes sense according
to Joe, but usually this
is injector rels, which operations tries to avoid saving.
There still seems to be a
need/desire for golden injector zero rels.
</p>
<ul>
<li><span class="todo">TODO</span> Generate specs for golden
zero rels (perhaps not just injector), while not<br>
too overly complicating the matter; involve MattB/controls
in discussion. This
also may include configuration of which beam is used.
<p>
0R04 diagnostic BLM is installed; there is ongoing work to
determine whether it's
calibrated properly/believeable.
</p>
</li>
</ul>
</div>
<div class="outline-3">
<h3 id="sec-44">6.3 Beam Studies Report</h3>
<div class="outline-4">
<h4 id="sec-45">6.3.1 <span class="todo">TODO</span> Mott TOF
detection technique/BFM development: Matt/Joe/Musson</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11042">ATLis
11042</a> Partly done Wed 2011-04-13 ~6h <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579039">e1579039</a>,
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579056">e1579056</a>,
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579070">e1579070</a>,
<a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579090">e1579090</a>
with summary at <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579092">e1579092</a>.
Installed new BFM chassis on Hall C laser, started
reconfiguring Mott DAQ. Some bad electronics channels need
repair, so will want
~2h later for polarization measurements. Some after-effects
on Hall C laser
required removal of the BFM. This is the second BFM – made
really good beat
beam with low timing jitter, but also introduced
unacceptable noise on the laser.
Will have to pay end effects of installing BFM, measuring,
then removing again
until this problem is resolved. Joe has since repaired these
channels and might
be ready mid-day Thu 2011-04-21.
</p>
</div>
<div class="outline-4">
<h4 id="sec-46">6.3.2 <span class="todo">TODO</span> Measure
6T Kicker response vs. frequency: Mike Spata (6h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11002">ATLis
11002</a>: Measured four magnets Thu 2011-04-14 <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1579268">e1579268</a>
out to 120 Hz
with new trim cards. Prepared for beam studies Tue
2011-04-19 (deferred due to
maintenance/repair). Ready to go Thu 2011-04-21.
</p>
</div>
<div class="outline-4">
<h4 id="sec-47">6.3.3 <span class="todo">TODO</span>
Stripline BPM IPM1L27C electronics: Musson/Keith Cole/Trent
Allison (~1h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11025">ATLis
11025</a> Partly done Wed 2011-04-06 <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1578039">e1578039</a>.
Collected about half the
required data. Still need to test low current (~10nA),
single-pass beam to
BSY, stripline with new electronics to establish low-current
threshold.
Was scheduled Tue 2011-04-21 (deferred due to
maintenance/repair).
</p>
</div>
<div class="outline-4">
<h4 id="sec-48">6.3.4 <span class="done">DONE</span> (Arc7)
LOCO/RayTrace 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 Arc7.
Done Tue 2011-04-05 <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1577866">e1577866</a>,
included LOCO measurements and various
RayTrace measurements from Ryan. Two RayTrace sets, one
baseline and one
in support of LOCO, measuring with various quad settings
early in transport.
Some occasional beam loss problems. Yves is presently
analyzing data for LOCO;
Ryan is presently analyzing data for RayTrace.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-49">6.4 Beam Studies Planning</h3>
<div class="outline-4">
<h4 id="sec-50">6.4.1 Hall A cooling down on Thu 2011-04-21;
status of Hall C Moeller?</h4>
</div>
<div class="outline-4">
<h4 id="sec-51">6.4.2 <span class="todo">TODO</span> Measure
6T Kicker response vs. frequency: Mike Spata</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11002">ATLis
11002</a>: Bumped to Thu 2011-04-23 (~6h).
</p>
</div>
<div class="outline-4">
<h4 id="sec-52">6.4.3 <span class="todo">TODO</span>
Stripline BPM IPM1L27C electronics: Musson/Keith Cole/Trent
Allison (~2h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11025">ATLis
11025</a>: Bumped to Thu 2011-04-23. Need to test low
current (~10nA),
single-pass beam to BSY, stripline with new electronics to
establish low-current
threshold.
</p>
</div>
<div class="outline-4">
<h4 id="sec-53">6.4.4 <span class="todo">TODO</span> Mott TOF
detection technique/BFM development: Matt/Joe/Musson (~2-4h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/11042">ATLis
11042</a> Bumped to Thu 2011-04-21, but conditional on
channel repair as
noted in the Mott TOF detection report above. Possibly ready
as early as
mid-day Thu 2011-04-21; Joe won't be available next week, so
we'll bump this
to 2011-05-03.
</p>
</div>
<div class="outline-4">
<h4 id="sec-54">6.4.5 <span class="todo">TODO</span>
LOCO/RayTrace optics tests: Yves, Ryan, Tief (~8h)</h4>
<p><a href="http://cebaf.jlab.org/atlis/task/10708">ATLis
10708</a>: Continued optics evaluation of machine,
including Arc6 which
will be retrofitted with H-steel over 6 month SAD, so we
want before/after
optics transport measurements. Mike Spata recommends
LOCO/RayTrace for as
many west arcs as possible before 6 month SAD. We converge
on data acquisition
for arcs 6 and 2 (or the best two west arcs) on 2011-04-26;
each arch should
take ~4h according to Ryan.
</p>
</div>
<div class="outline-4">
<h4 id="sec-55">6.4.6 <span class="todo">TODO</span> Improved
bunch length measurements with HV gun: Reza</h4>
<p>(No ATLis yet): ~2h in injector to test new settings for
bunch length measurement
tool at 130 kV. If this works, we'll have a reliable bunch
length tool for
October startup.
</p>
</div>
</div>
<div class="outline-3">
<h3 id="sec-56">6.5 Coming next week</h3>
<div class="outline-4">
<h4 id="sec-57">6.5.1 Frequency-agile MO (FRAGMO) test
plan/considerations: Tief</h4>
</div>
<div class="outline-4">
<h4 id="sec-58">6.5.2 CED update: Michele</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-59">6.6 Coming in two weeks</h3>
<div class="outline-4">
<h4 id="sec-60">6.6.1 C100 BBU/low energy/Hall C:
Todd/Shahid/Ilkyoung</h4>
</div>
<div class="outline-4">
<h4 id="sec-61">6.6.2 Mike McCaughin: Injector zero rels</h4>
<p>
Quad centering
Dipole refurb
MikeS: R100 may be going into CEBAF; not going into FEL
Bug Fulvia about getting in loop on this decision
</p>
</div>
<div class="outline-4">
<h4 id="sec-62">6.6.3 Outstanding/Tabled ToDo items from
previous beam studies</h4>
<ul>
<li>Review/establish planned 12 GeV optics match procedures
in spreaders/recombiners.<br>
</li>
<li>CASA review (Yves? Tief?) of Arc1/Arc2 data from <a
href="https://cebaf.jlab.org/elog/elog_item.php?elog_id=1572645">e1572645</a>.
Done again Mar 11.<br>
</li>
<li>Discuss impact of inj fopt correctors, cost/benefit of
replacement<br>
Jay to work with Ron on developing the ATLis for making
this change during the summer.
</li>
<li>Revisit <a href="http://cebaf.jlab.org/atlis/task/8346">ATLis
8346</a>, PZT if parity quality deems this necessary<br>
</li>
<li>Measuring 0L03/0L04 and capture/quarter transport: Yves<br>
<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>: Not needed unless Hall C parity quality does
not meet
specification. Brad reports that the beam is presently
within specification.
QWeak also has DAQ problems in front end that also need to
be resolved.
</li>
</ul>
</div>
</div>
<div class="outline-3">
<h3 id="sec-63">6.7 APEL Hall Liason Comments</h3>
<div class="outline-4">
<h4 id="sec-64">6.7.1 Hall A: Yves</h4>
</div>
<div class="outline-4">
<h4 id="sec-65">6.7.2 Hall B: Tief</h4>
</div>
<div class="outline-4">
<h4 id="sec-66">6.7.3 Hall C: Jay</h4>
</div>
</div>
<div class="outline-3">
<h3 id="sec-67">6.8 AOB?</h3>
<div class="outline-4">
<h4 id="sec-68">6.8.1 <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 (in log; will be
in tech note)
</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: 2011/04/27 16:43:04</p>
</div>
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