[Bteam] notes from today's meeting
Arne Freyberger
freyberg at jlab.org
Wed Nov 3 16:35:59 EDT 2010
B-team Meeting Notes
1 2010-11-03 Wed 14:00 Agenda--Notes
1.1 Optics-On-Call Summary Alex
Alex will summaries machine and beam optics issues over the past seven
days.
* Uneventful week
* Instrumentation issues with HallB
* HallC valve closed during beam delivery
o Valve is now "unmaskable"
* Discussion
o pA runs in Hall-B
+ HallB has been unable to take low current calibration
runs due to unacceptable backgrounds and unstable
current at these low currents.
+ present slit is at 17.5
+ present attenuator is at 100'ish
+ Presently the attenuator is being used to lower the
current. Suggestion is to use the slit to lower the
current. So far OPS has been reluctant to use this
approach.
+ Adjust phase appropriately.
+ Do not expect current lock to work with attenuator
below 100.
o M56 in the machine
+ Pathlength calibration revealed that there was a small
amount of M56 in the machine. Starts in Arc1.
+ Should we fix this? yes!
+ proposal is to tack this on to the end of the Wien
setup/150? A injector setup tomorrow.
# Spata will lead the effort.
# This activity will take place if the Vertical
Wien setup goes exceptionally well tomorrow.
1.2 Beam Studies Report
* Two wien calibration Poelker
Calibration with 130keV incoming KE. Final setup tomorrow for QWeak.
o when does QWeak really need polarized beam?
o Two Wien flipper will not work at energies higher than 130keV.
o would like a plan from QWeak on spin orientation
configurations for the upcoming months.
* QWeak Inj. studies Dalton
o spent time searching for 60Hz noise in Injector. Data
collected, analysis is on going.
o Hope to provide some plots soon. Plots will be posted in the
POLOG.
o Need more in the injector for Cathode scans. Will request
1/2 shift every other week.
* BPM R&D Report Spata
Summary of previous beam studies and 9am meeting on the proposed
stripline BPM design. Meeting on the stripline design for ArcA and
Hall-D.
o estimates of the impact of synchrotron radiation appear to
be negligible. 0.1% change in the signal pick up.
o requested a large gap +/- 5mm
o Still one more design/fab iteration is needed before
submitted procurement packages.
o tech-note preparation is in progress.
o develop a plan to install one or two in Arc9 during the
6-month down.
1.3 AHLA FY11 Projects Arne
Summary of the AHLA projects for FY11. Below is the table of all the
projects presently known, planned and unplanned. Some projects have "OPS
Charters" written and having a charter accommodates the planning
process. The OPS charter template is attached.
* OPS Project Table
Owner Project Years Resources
AHLA Full_Inj _Energy _Upgrade
<./leaders/data/charters/AHLA_Full_Energy_Injector_Upgrade_charter.docx>
AIP FY11/FY12/FY113 AHLA/SRF/Controls/ENG
AHLA 6GeV_model <cid:part1.07050405.03060507 at jlab.org>
FY11/FY12 AHLA/CASA
AHLA CDEV_Replacement <cid:part2.09050700.07020607 at jlab.org>
FY11 AHLA/Controls
AHLA CED <./leaders/data/charters/AHLA_CED_charter.docx> FY11
AHLA/Controls/ENG
AHLA CED_Conversion <cid:part3.02000204.00080200 at jlab.org>
FY11/FY12/FY13 AHLA
AHLA Optical Diffraction Monitor FY12/FY13 AHLA/CASA/Eng/Controls
Krest
Lem Upgrade (heat management)
AHLA/Cntrl/Eng Timing System AIP FY14/FY15/FY16
Controls DisplayWallReplacement
<./leaders/data/charters/Controls_DisplayWallReplacement_charter.doc>
FY11 Controls
Controls ImageManagement
<./leaders/data/charters/Controls_ImageManagement_charter.doc>
AIP FY11 Controls/ENG?
Controls InsertionDeviceManager
<./leaders/data/charters/Controls_InsertionDeviceManager_charter.doc>
FY11/FY12 Controls/ENG
Controls NextGenerationIocHardware
<./leaders/data/charters/Controls_NextGenerationIocHardware_charter.doc>
FY11 Controls
Capfast Replacement
Low Level Controls CED integration
Low Level Software Management
C25/C50 RF micro-controller compilation/linking
O'bility MCC conference room technology
Documentation Vision out to 2020
Sing the 8am electric
Eng CAMAC ? VME (East Arc) FY10/FY11 Controls
New Harp electronics design FY11 Controls
BLM HV upgrade FY10/FY11 Controls
TRIM-II FY10
Analog Blocks FY10
Replace existing low-level RF hardware AIP? Controls
PSS Upgrade FY11/FY12?
New Klystrons FY12/FY13
OPS training system
Status Marquee
AIP Beam Dump Diagnostics AIP FY14/FY15
Source Positron FY11 Eng/Controls/Physics
HallA g2p FY11 Eng/Controls
* Discussion of elegant model
A sequential approach, doing one arc or one pass at a time with
one week of integration results in the elegant modeling effort
finish just in time for the May 13 end of the run. See Gantt chart
below:
*
Perhaps a more efficient use of beam time would be to use the
first few days after the winter down to download and tune the
entire machine. A plan based on this approach will be developed.
The drawback of this approach is that lessons learned in Arc1
cannot be fed into the Arc2 plan.
A new plan will be developed with the goal of loading a complete
set of optics based on elegant model after the winter down.
1.4 CASA FY11 Projects CASA
Discussion of CASA FY11 Projects and needs.
* BBU studies
* Chebyshev multipole extraction
* No time for discussion. Comments:
Next week CASA should present a list of CEBAF related projects
that they would like to see action on in FY11 (and FY12).
Comment: A charter on the development of tools required to make MO
frequency adjustment for pathlength controls should be written.
1.5 6-month down restoration discussion and team formation CASA
SOURCE ENG OPS
Discussion how to prepare for restoration after the 6-month down and
successful positron experiment. This discussion did not take place. It
will take place next week.
Date: 2010-11-03 16:31:49 EDT
HTML generated by org-mode 7.01trans in emacs 23
--
Arne Freyberger
Director of Accelerator Operations
Jefferson Lab Office: (757) 269-6268
12000 Jefferson Avenue Cell: (757) 876-6289
Newport News, VA 23606 Email: freyberg at jlab.org
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