[Halld-jlab] Hall D Staff Meeting Notes, September 12, 2011
Mark M. Ito
marki at jlab.org
Mon Sep 12 18:15:55 EDT 2011
Colleagues,
Find the notes at
http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_September_12%2C_2011
and below as text.
-- Mark
_____
Private:Hall D Staff Meeting, September 12, 2011
Present: Fernando Barbosa, Cody Dickover, Hovanes Egiyan, Mark Ito,
David Lawrence, Lubomir Pentchev, Dmitry Romanov, Elton Smith (chair),
Sascha Somov, Simon Taylor, Ivan Tolstukhin, Tim Whitlatch, Elliott
Wolin, Glenn Young, Beni Zihlmann
Elton, announcements
* magnet scheduled to move next Monday
+ camera will be set-up
* Tim: Hall D open house for rest of lab planned for December
* nothing has happened on physics hire
* Hamamatsu people will be here Friday
+ room reserved
+ no agenda yet
Tim
* solenoid move starts Sep. 19 (next Mon.), should be done in a week
* mid to late Oct. have all coils installed on stands
+ schedule driver: welding of baffle to yoke
* platform will be ready by end of Oct.
+ install end of Nov.
* power engineer being interviewed
* mock up for CDC/FDC waiting on a few more parts
* BCAL wedge mock-up pieces in by end of week
Elliott
* online meeting in two days
+ David Abbott: coda 3
+ Sascha: trigger
* number of racks, confusion cleared up
+ techs ordering hardware
* main fiber pull for network in summer
+ buying network switches to get started
* tagger building network, use dark fiber, tie into one, to go to
counting house
* calibration and conditions database: start to bring up
* networking for trailer up in the air
+ Tim: will have the trailer until 2014
* raw event data simulation getting close, need function from Dave
Abbott
* solenoid redesign meetings will start tomorrow
* slow dump circuits were working in Test Lab during test, but a
necessary adjustment was not done
* quench detector re-design: do it? Fernando: no if inductances
balanced
* Nerses is coming soon
* moving controls out of Test Lab
Hovanes
* worked on EPICS support for IU HV bases
+ one component: talks to bases
+ other: provides EPICS records with values
+ going reasonably well
+ hope to have something ready for Fall beam test
* lots of procurement items coming up
+ ordered 3 more VME controllers, total will be 8
+ PLC items
+ test electronics
+ networking hardware
* soliciting input on computing purchase for online systems
+ for development only at this point
Lubomir
* two cells in the first package stacked
* one cell from last week dis-assembled, problem with wire frame and
a cathode channel, fixed
* running with gas and HV over weekend
* one trip this morning on new cell
* first wire frame capacitors not changed, but covered with Humiseal
* today checked a few channels, wires and cathodes, fixed channels
staying fixed
* next cell: wire frame ready tomorrow
+ want to do more tests with two-cell configuration first
Sascha
* had meeting with George Biallas and Tim on gap size of pair
spectrometer magnet and vacuum chamber
+ went through simulation again
+ final decision
o gap = 1-1/2 in.
o 2-5/8 in. with walls
o vacuum chamber 1-3/4 in. high
+ 2.5 GeV electrons can be accepted
+ need to check position of detectors along beamline
* trigger bit-wise simulations
+ hits from GEANT, digitized
+ working on graphic interface
+ save waveforms and download to FPGA
* thinking about requirements for electronic board initialization, in
touch with Vardan Gyurjyan
* got an FADC 250, have not looked at it yet
* online schedule needs to be looked at again
+ event dis-entagling in particular
Simon
* working on improvements to track finding code
+ addresses some of the issues, in particular charge
determination
+ some problems remain for very forward tracks
+ looking at errors from multiple scattering
+ spike at zero probability: sources being identified
* promised a new tracking document
David
* continue to work on BCAL segmentation issue
+ another draft of note went out last week
+ working on number of photo-electrons from scintillating fibers
+ next: work with Will Levine on sim-recon tree update
+ also: parametrize effects so that they can migrate to main
trunk, microscopic treatment may not be appropriate
* wiki upgrade plan: current version five years out of date
Ivan
* work on SiPM measurements set-up
+ focus on recovery time
+ problem with pulse generators; waiting for a new one
* next work: on pair spectrometer detectors
Beni
* worked on gas system for wire chambers
* issue with PMT's for TOF
+ how to deal with high rates
+ at normal gain, too much current
+ will need amplifiers for innermost three paddles
+ also half-length paddles
+ no data on lifetime in terms of charge
+ constraint comes from current limit
* fixed error messages from hdview2
* want to re-arrange FDC test stand next
Dmitry
* tested CCDB with JANA
+ discussed distribution plan with David
+ JANA will use plug-in to run with CCDB
+ will distribute instructions in next day or so
* CCDB beta version will be presented at next offline meeting
* discussed big files in database
+ will propose solution: resource management
* CCDB web-page development picked up again
+ prototype exists, old
+ restored
+ will be part of beta release
* continuing working with Sascha: online database
Fernando
* safety, pico second laser, same one as we had on loan from
Hamamatsu
+ should be here by November
+ class 3B, documentation needed just to order
o hazard analysis
o SOP
o limited number of people with access
+ Fernando will be safety manager
+ training will be required
+ need special enclosure, interlocks
+ 405 nm, 100 mW peak
* flash 250 procurement ongoing
+ end of Sep. deadline for proposals
+ current number 625
* low voltage procurement and cable assemblies (RG58, HV)
+ should be awarded soon
* HVB for CDC: received first article on Thu.
* today received first article for pre-amps
+ look very very nice
* BCAL SiPM work
+ GlueX note on 3 mm array
+ also note on 3 mm single cell
+ plan publication
+ development complete
+ Werner Boeglin tested one for start counter
+ developing test, Chris on vacation, developing for testing
ones that are already here
+ final read-out design is practically complete
+ producing pre-amp to test single cell read-out for microscope
+ issue with degradation of timing resolution when rate goes
above a MHz
Mark
* construction MOU from FIU has been returned with some changes
* reconstruction tasks being addressed in offline and physics
meetings
* GEANT4 Tutorial proposal got good review from UGBoD
* TOF contract/drawings coming together
* TOF PMT purchase order: still working on it
* personal web site thing has been straightened out
Retrieved from
"http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_September_12%2C_2011"
More information about the Halld-jlab
mailing list