Transcript 5/17/04 - Meeting

GLAST LAT Project
Gamma-ray Large
Area Space
Telescope
GLAST Large Area Telescope:
LAT System Engineering
Pat Hascall
SLAC
System Engineering Manager
[email protected]
650-926-4266
LAT System Engineering
1
GLAST LAT Project
Topics
•
Meeting goals
– Review status of Performance and Operations Test Plan
•
Team Goals
– Define test requirements necessary through December
• Tracker and Cal post delivery tests
• Cal tests post integration with TEM and TEM/PS
• Tower integration tests
• Multi tower tests (without ‘final’ flight software)
• Third layer boxes tests as necessary
– Testing with next delivery of flight software, all third layer boxes and ACD
will be defined in the next phases
LAT System Engineering
2
GLAST LAT Project
Performance and Operations Test Plan
Status
• Plan is drafted through the two target test with the following
liens
– TEM/TEM PS tests not defined
– Calorimeter tests identified, but text definition not available
– Tracker tests updated with ‘latest’ info, but the Tracker Test
Plan is not final
– Two tower test definition still in work
– Interface tests will be called out, but the detailed approach
is currently under lively debate
– Trigger and Data Flow tests
• Some questions about the trigger testing called out
• Details of data collection series not yet included
LAT System Engineering
3
GLAST LAT Project
TEM/TEM PS Tests
• Per discussions with Gunther, the TEM/TEM PS combined tests
are:
– Verify general functionality
– Verify ability to communicate with CAL and Tracker
– Verify thermistor performance
– Measure output voltages and check voltage telemetry at
nominal settings and at low and high settings
• current procedure covers EGSE adjustable voltages as
well as bias voltages
– The tests may be done with voltage variations and clock
variations
• This test uses specific EGSE
LAT System Engineering
4
GLAST LAT Project
Cal and Tracker Test Status
• Cal
– Tests have been changed to match the test list instead of
the script list
– Still need final test definitions
• Tracker
– Tests have been updated to use latest approach
• Tower level test calls out tray level tests
• Numbering convention changes
– Tray level tests prefixed with TSL instead of TE
– Still a few tests under consideration that may be added
LAT System Engineering
5