[Halld-jlab] Hall D Staff Meeting Notes, March 25, 2013

[Mark M. Ito]

Find the notes below and at 
https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_March_25,_2013 
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Present: Mary Jo Bailey, Fernando Barbosa, Eugene Chudakov (chair), 
Hovanes Egiyan, Mark Ito, David Lawrence, Lubomir Pentchev, Yi Qiang, 
Elton Smith, Simon Taylor, Tim Whitlatch, Elliott Wolin, Glenn Young, 
Beni Zihlmann

=Eugene=

* budget news from management: nothing is known
** April 8 President's budget is due
** guidance: do not overspend, no contingency for operations, but no 
explicit restrictions
* management at DOE is changing, e. g., Brinkman stepping down
* doors on F-wing locked on weekends, there will be a review
* injector test facility being proposed, 5-10 MeV electrons
* LDRD program: financed from operations
** a lot of applications, letters of intent, expect more proposals
* we are asked to plan surveys in advance
* Elton promoted to Senior Staff. Congratulation Elton!
* ETC, effort continues on
** maybe last version is done, got it from Phil last night, not put on 
web page
** some things are still missing (successor/predecessor stuff)
** management allowed us to move some part of schedule to FY15
** FY14 very tight now
** schedule will have some things moved forward in time, few 100 k$
** need to provide a schedule to submit to DOE, making sure that 
activity names match with official schedule

=Mary Jo=

* introducing Martha a new system for hazard issue information
* augments Hall D hazard list, various task hazard analysis
* safety group tried to narrow down questions
* available from Insight page: three new icons
*# toolbox meetings
*# OSPs
*# MARTHA
* attempts to compile all recognized hazard issues at Jefferson Lab
* if not on the list, need an OSP
* e.g. chemicals, PPE, goes to relevant section of the EH&S manual
* can search for people that have particular training
* can pull up required training for certain activities

=Tim=

* Eugene, solenoid:
** close to low 20's K
** carbon in refrigerator, will warm it up
* changed flow, changed feed temperature: better but not fixed
* good news: solenoid power supply working
** came to 1500 A
** several different problems
*** regulation board, replaced with spare one
*** bad pot setting,
*** some bad transistors replaced
** one bank went to 1500
** combined banks also went to 1500
** will have Danfysik come in, costs 2 k$ per power supply
** using two borrowed boards
*** EES will repair one, one goes back to Danfysik for repair
*** need to assess spare situation
* tagger magnet: getting ready to start stacking steel, today or 
tomorrow, put steel on piers
** first two pieces first, then vacuum chamber,
** problem with vacuum chamber at some locations, think it will fit anyway
** will need to modify brackets that hold coils, 1/4" off in some instances
** may have to make some new brackets because of space issues
** then go on to rest of steel
** a month or so for this work
* BCAL: several wedges put on
** modifying assembly tools to create platform for putting rest of 
modules together
** tooling templates were made for aligning modules
** installation rails aligned
** this week: stack more wedges
** graphite coating on rails plus some grease
** installation cart has some adjustments
** 5 mil accuracy on shape of wedges, 5 mil shims will be put in as 
structure build up
* gas systems for FDC, CDC
** met on it this morning
** gas panel spec signed off on
*** will be on upstream platform
* BCAL cooling loops, met today on it
** chiller contract awarded
* solenoid magnet mapping fixture almost designed
* tagger magnet mapping fixture will be 13 k$ for all hardware
** use FDC construction motors and controllers
** use same fixture for pair spectrometer magnet mapping

=Fernando=

* Problem with BCAL racks in the Hall
** very little space to access cable trays
** Tom Carstens will remove doors
* under platform, I beams cause interference for cable trays, not a 
straight line for some cable runs
** Tim: problem from having the wrong racks drawn last year, had to put 
in taller ones
* design for BCAL distribution box, low voltage and bias done
* coming up: BCAL and FCAL pulser distribution box
* continuing with plan for bundling cables
** starts early April, lots to be done
** signal cable assignments are done for BCAL, FCAL
** low voltage distribution still to do
** printer makes labels from an Excel spreadsheet
** John Leckey will work on FCAL cables, space has been identified
** using self laminating cable labels
* full crate tests going on now
** need 12 for Dave Abbott and Bryan Moffit to do test
** should be ready by end of this week
* TDCs should be here next week, all of them
* flash 125: talked with Gerard and Cody
** company is a month behind schedule
** they have delivered a full crate that Cody is testing
** want to have absolute dates on schedule
** ones delivered look good

=Hovanes=

* Eugene: one issue with schedule was online/daq manpower
** online group has figured out a plan
** some collaborators will work on online tasks
** still about 30 man-weeks not accounted for
* counting house
** furniture and consoles: PR placed and signed
** everything is going to be ordered except Polycom unit
** rack room ready to be used, has power, cable trays
*** test by Dave A. and Bryan can start anytime
* Elton Sasha Hovanes worked out. blueprint on how to use Z1495 module 
to supply pulses for BCAL and FCAL
** Ben Raydo will develop FPGA software
** Nerses and Hovanes will do EPICS
* with Beni, working on EPICS driver for low voltages
** should have it finished in a day or two
* goniometer is here
** discussing vacuum chamber design with Slava, preliminary ideas so far
** Ken will visit in April, he will want to discuss it and test goniometer
* went to Hall B and got PrimEx profiler
** can be used in front of active collimator for beam tuning
** made with crossed scintillating fibers
* rebaselining the online
** items postponed until FY15:
*** computer for EPICS archiver: Accel. Div. can do archiver
*** level 3 farm computers: need to use machines from Chip Watson

=David=

* working on magnet mapping effort
** optimizing density of points in z
** question from George Biallas: how accurately do we need to know 
orientation for probe
*** 1 mR is tracking angular resolution
*** George: 10 mR no problem for probe
*** Hovanes: when calibrating probe, planar Hall effect may contribute 
to higher order
** step density: 2 cm looks good
*** then gradient of total B field to change by less than 200 G, 1% of 2 T
* tagged new version of Jana
** Simon and Paul Mattione started to use it, Paul for CLAS data
** has support for resources
** slow start-ups addressed
** more diagnostics built in, e. g., reconstruction call graph enhancements
* work on simulations for charged pion polarizability
** issues with backgrounds have arisen recently
* working with Northwestern, they are taking over root-spy and are 
making progress
** this addresses one of the activity lines in the schedule

=Beni=

* finished testing of last package of FDC
* doing new test: impact of gas flow,
* started development to run full crate of ADCs
* made plateau curves for 4 different thresholds
** nominal value 5 V but 7 V would still have close to 100% efficiency
** higher voltages checked as well
** do not see rise of noise in his method
** gas flow tests, will take one or two weeks
* next move is to put all electronics in test stand
** there is time to continue this program
* developing own BCAL reconstruction code to understand multiple 
extraneous photons
** KLOE code in b1pi sees 50% more photons than generated; Beni's code 
sees even more currently

=Lubomir=

* working on HV sector on package #3
* tried cleaning wires on Fri.
* took wire frame and removed it
* Bill suggested looking at it on stringing table
* scanned wires: took 10 minutes per wire, found several places with 
hairs, dust
* identified three wires where things could not be removed
* when testing wireframe separately between Lexan planes, still trips
* plan now is to remove individual wires, there are 3 suspects

=Mark=

* TOF/FSU readiness review conducted last week
** Beni, Chuck Hutton, Bruce Lenzer traveled
** FSU looks to be in pretty good shape
** Beni: building the mini-TOF focused effort in a good way
* work on rationalizing testing scripts, b1pi and single track
* start counter contract progress: technical proposal in FIU system
* target meetings: Tim has fired them up in earnest

=Simon=

* improvements in track finding, particularly CDC track candidates[?]
* proton reconstruction: improvements aimed at η proposal
* analyzing data challenge files for rare η decays
* found some memory leaks in generating reference trajectories
* revisiting alignment code

=Yi=

* goniometer
** Ken will be here last two weeks of April, preparing for him to do 
checkout
** borrowed pointing laser from Hall A Compton people
** from Hall A helium-3 group, borrowed optical table
* magnet solenoid field mapping: writing program to write data to disk
** 3-axis probe: hook output to PXI system
** single-axis probe: GPIB interface, borrowed GPIB-to-ethernet 
interface, can read it out remotely
* LDRD program, a lot of proposals
** got feedback, positive comments, among them, please don't mention the 
word "de-scope"

=Elliott=

* root-spy
* conditions database: Mark will talk at online meeting
* talk on deferral by Graham postponed
* Dave Abbott ready for crates that are coming[?]
* Dave wants nodes from Chip
* we have an agreement on uncompressed data format
* Josh Ballard left, now problem with PLC talking to MySQL
* FCAL darkroom: need to make recommendations for equipment
* PLC test stand: Dave Butler building up inventory of units to test

=Elton=

* Santa Maria finished testing SiPMs, major milestone achieved
** they are in the process of packaging and shipping, two more shipments
* light guides: starting to put BCAL modules on cradle, some snags
** couple of modules had top corner light guide broken off, not clear why
** one of the modules had light guides coming unglued (one of the first 
modules)
** thought a similar issue occurred with another module, seeing some 
reflection of glue between the light guides most likely
** Eugene suggests implementing some way to quantify light transmission 
through modules as a standard test
* Matt Shepherd raised issue of summer students
** we have encouraged collaboration to provide students
** Matt requests some assistance in arranging housing

-- 
Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295