LAT ISOC
Gamma-ray Large
Area Space
Telescope
All Hands Meeting, 13 Oct 2004
GLAST Large Area Telescope
LAT
Instrument Science Operations Center
Rob Cameron
Stanford Linear Accelerator Center
rac@slac.stanford.edu
650-926-2989
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LAT ISOC
All Hands Meeting, 13 Oct 2004
LAT ISOC in the GLAST GDS
Analysis Software
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LAT ISOC
All Hands Meeting, 13 Oct 2004
LAT ISOC Objectives
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The LAT ISOC is organized to:
– Safely operate the instrument
– Produce the LAT science data products
Functions:
– Mission planning and command generation
– Health and safety monitoring
– Maintain and modify flight software and testbed
– LAT performance verification and optimization
– Process and archive Level 1 and Level 2 data
– Support science analysis software
– Data and software management
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LAT ISOC
All Hands Meeting, 13 Oct 2004
ISOC Organization
ISOC Manager
R Cameron
Database
Commanding,
Health & Safety
Flight Software
Documentation
Performance V&O
Science Products
Science Analysis
Tools
Timeline
Planning
Code
Maintenance
Calibration
Level1 CRs, gammas,
diagnostics
Simulation/Recon
Command
Generation
Code
V&V
Performance
Trending
Level 2
Transients, GRBs
Science Tools
Command V&V
Testbed
Maintenance
Standard Source
Monitoring
Pipeline
Operation
Infrastructure
Health & Safety
IRF Generation
Configuration
Tracking
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LAT ISOC
All Hands Meeting, 13 Oct 2004
ISOC Teams
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CHS
– “Front-end” instrument operations
FSW
– Joins ISOC after FSQ (Mid 2005)
PVO
– Follows from SVAC in I&T
Science Products
– Runs pipeline, generates Level 1 (and some L2) products
SAS
– Software tools to support science analysis
ISOC will work with various LAT project elements during prelaunch activities, to ensure smooth transition into ops phase
ISOC will coordinate activities with Science Working Groups,
overseen by LAT Steering Committee
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LAT ISOC
All Hands Meeting, 13 Oct 2004
Software Architecture: Primary Data Flows
LAT ISOC
MOC
Level 0 Data,
LAT Alerts,
Integrated Observ. Timeline,
Spacecraft Timeline,
As-Flown Timeline,
Flight Dynamics Products,
SC Incident Reports,
PDB updates
Level 0
Sci Data
Receive
& Archive
Level 0
Hkpg Data,
LAT Alerts
Integrated Observ. Timeline,
Spacecraft Timeline,
As-Flown Timeline,
Flight Dynamics Products
GSSC
Anomaly
Tracking &
Notification
System
GSSC
Contingency:
LAT Instrument Commands,
LAT Instrument Loads,
LAT Timeline
Archive
& Send
Tested
OK
Commands
to Verify
Alerts, Logs,
Process status,
File status
Archive
& Send
Level 1&2 Sci Data Products,
LAT Timeline
CHS
monitoring
& trending
Mission
Planning
Receive
& Archive
Prelim. Science
Timeline, Long Term
Science Schedule,
Observ. Timeline Package
Science
Data Analysis
Pipeline
Level 1&2
Sci Data
Products
LAT Test Bed
MOC
LAT Incident Reports,
LAT T&C Database Updates
All data into ISOC,
and products out
Database
Web
Access
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LAT ISOC
All Hands Meeting, 13 Oct 2004
Operations Coverage
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Weekday, day-time operations
– Mission planning, command building
– Operator shift coverage
• 5 am to 2 pm to cover MOC shift times on East Coast
• 9 am to 6 pm to cover ISOC internal coordination needs
Telemetry monitoring and science data processing: 24/7
– Continuous automatic processing
On-call support available 24/7
– Support for targets of opportunity, anomalies
– Operators for real-time commanding or anomaly support
– Software engineer for emergency software support
– Computer technician for computer/network support
– Team Lead and Instrument Physicist for anomalies
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LAT ISOC
All Hands Meeting, 13 Oct 2004
ISOC Operations Facility
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Working with SLAC management and Facilities group to define
near-term ISOC operations facility. Coordinating ISOC space
requirements with LAT project management.
Near-term ISOC facility: a new temporary building at SLAC
Long-term ISOC facility: discussions are starting with SLAC
and KIPAC management on ISOC facility in new Kavli building
at SLAC, available 2006. Also ISOC presence on Stanford
campus.
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LAT ISOC
All Hands Meeting, 13 Oct 2004
ISOC Operations Layout
59'-6"
15'-0"
25'-0"
15'-0"
11'-0"
Operations
Center
35'-6"
Viewing
wiindow
Glass doors or glass
windows in doors
20'-0"
Cipher
locked
Glass window
in door
14'-6"
Glass window
in door
No window (wall for
projection screen)
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LAT ISOC
All Hands Meeting, 13 Oct 2004
ISOC Development Schedule
Phase / Milestone
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ISOC CDR
GSDR
ITOS setup/configuration
ISOC Verif. with Test Bed
DB/Web/E-logbook Dev
Plotting/Trending Dev
Mission Planning Dev
Diagnostic Tool Dev
ISOC Demos
ISOC Simulation Testing
ISOC SW Releases
1
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4
3
Ground Readiness Tests
2
3
4
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7
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End-to-End Tests
1
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Environmental tests at NRL
ISOC testing at NRL
ISOC ready to take over LAT operation
ISOC used to I/F with LAT (front-door only)
Mission Simulations
Launch
SW Dev Slack Times
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