Online telecon notes for July 24,
2002
Attending:
- Zhigang Wang (UCSC/TKR)
- Jim La (GSFC/ACD)
- Byron Leas (NRL/CAL)
- JJ Russell (SLAC/FSW)
- Tony Waite (SLAC/FSW)
- Mike Huffer (SLAC/ELX)
- Larry Wai (SLAC/I&T-IFCT)
- Alicia Kavelaars
(SLAC/I&T-SVAC)
- Selim Tuvi
(SLAC/I&T-Online)
- Ric Claus
(SLAC/I&T-Online), minutes author
- Core Online (Selim, Ric)
- Learning Python, XML and Qt
- ACD (Jim)
- Connie (currently on vacation) has been working with LabVIEW to
make screens that show hardware counts converted to engineering units
- Connie visited Byron at NRL to learn what he’s done with Python
and Qt
- CAL (Byron)
- Met with Connie; owes her some example files
- Wants to know whether it is okay to use QT non-professional
(free) version.
- Yes, it should be okay from a license standpoint (unless we hear
differently)
- Note that the free version is several releases behind the
commercial (professional or enterprise) edition.
- Sent Ric some example Python and Qt files
- Ric was able to load and activate Byron’s Qt example with
release 3.0.5 (Professional edition)
- TKR (Zhigang)
- Wants to come to SLAC tomorrow to pick up the workstation that
was set up for him. To be
coordinated with Dave Nelson and Tom Borden.
- SVAC (Alicia)
- Has implemented TKR portion of the configuration database in MS
Access
- Implemented the TKR portion of the TEM browser LabVIEW
application
- IFCT (Larry)
- Wants to work with event data
- Monte Carlo
- Detector generated
- Larry is trying to bootstrap himself into writing functional test
scripts and displays
- Currently, Online doesn’t have some of the event data handling
tools needed available
- Online’s advise is to sit tight a while longer
- ELX (Mike)
- For Byron: are trigger jitter issues resolved?
- Mostly
- Some timing issues on the CAL side still to be figured out
- CALSTROBE fix by Curt needs to be incorporated into an Online
release and sent to NRL
- FSW Face-To-Face meeting to be held @ NRL 8/6 – 8/9
- Mike & Curt will be available for questions
- Meeting will be FSW oriented but interested parties are welcome to
attend, contact Dan Wood at NRL for times and locations
- AFEE board is in layout
- Mark Freytag is back to work on the AEM schematic and
documentation
- New Test-Stand component status
- “Test-stand architecture redux” document
- Byron asked about environmental issues with the new plan, e.g.
cable length restrictions
- Mike to look into these, but in principle, no problem
- Larry thinks some 5 meters will be needed to get between the LAT
assembly stand and the electronics in the electronics room of building
33
- This hardware will be mounted on or
near the instrument. Need only
power and Ethernet from the electronics room
- JJ thought the cable lengths are limited by 15 ns signals
- Jim asked whether the new layout will be supported in VME
- Yes, via a PMC daughter card (LCB) on the MVME2306
- Mechanical specs of the EM AEM are same as those of the EM TEM
so that it can fit to the PSA in the same way. The flight AEM will look radically
different as it will be part of the GASU
- Both the new test-stand hardware and the AEM are expected to be
available late fall
- There will be no pseudo-AEM for the new test-stand
configuration, which is why the delivery dates of the EM AEM and the
new test-stand hardware are the same
- SLAC will prepare all cables except those between the TEM/AEM
and subsystem electronics
- The new EM TEMs are in fabrication
- 20 boards are expected by next Monday
- 17 of these boards will be loaded
- Only difference to end users with the previous TEM is that
there will be no pigtails, but actual flight-ready connectors
- TEM, AEM and PSA will each be mounted in a shell
- Prototype shell for TEM is complete
- Has similar mechanical and thermal
characteristics as flight model
- Prototype PSA shell is under construction
- Will have similar mechanical and
thermal characteristics as flight model
- Dave Nelson to build PSAs
- Design and parts ordering underway
- Will also take care of 115 VAC to 28 VDC supply
- Leonid Sapozhnikov to build Transition board
- Contains functionality of the GASU, EPU and GLT
- Leonid (hardware) and Curt (software) working on the LCB
- Replaces the current LAT-COMM cards
- Detailed hardware and software designs underway
- Expect completion of new Test-stand hardware by late fall
- Jim asked whether there will be a design review of the EM AEM
- Jim asked whether the new test-stand architecture will be
brought up at the dPDR
- No plans to do so, but up to Gunther
- Electronics roadmap (no particular order)
- Goal is to connect many components together to form the LAT
- Design the global trigger (Mike has started this)
- Design Fan-in/Fan-out
- Design Event builder
- Design PDU
- Deal with clock generation and distribution
- Incorporate the AEM
- Connect all these pieces together
- No Online meeting next week due to dPDR meeting