1. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 1 GLAST Large Area Telescope Instrument Science Operations Center Overview and Status Rob Cameron Stanford Linear Accelerator Center rac@slac.stanford.edu Gamma-ray Large Area Space Telescope

2. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 2 Outline  GLAST Mission Operations Elements  ISOC Functions and Organization  Flight Operations in the ISOC  Science Operations in the ISOC  Pre-launch Operations Testing  ISOC Facilities at SLAC  Summary

3. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 3 GLAST MISSION ELEMENTS GN HEASARC GSFC - - DELTA 7920H White Sands TDRSS SN S & Ku LAT Instrument Science Operations Center GBM Instrument Operations Center GRB Coordinates Network Telemetry 1 kbps - S Alerts Data, Command Loads Schedules Archive Mission Operations Center (MOC) GLAST Science Support Center  sec GLAST Spacecraft Large Area Telescope & GBM GPS GLAST MISSION OPERATIONS ELEMENTS

4. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 4 LAT ISOC Activities LAT ISOC Activities  The LAT ISOC is organized to: –Operate the instrument, in conjunction with other GLAST ground elements –Generate reconstructed LAT events and automated science products  Main Functions: –LAT command planning and construction –Instrument health and safety monitoring –Maintain and modify LAT FSW and the LAT Testbed –LAT calibration, performance verification and optimization –Process and archive LAT data –Maintain and optimize the software that produces science data  Incorporates online and offline operations activities for the LAT –Extends existing pre-launch activities into on-orbit operations  Supports the LAT collaboration

5. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 5 ISOC Organization ISOC Manager: R. Cameron Deputy: E. do Couto e Silva, Deputy: R. Dubois Science Analysis Systems R. Dubois Flight Operations J. Thayer Commanding, Health and Safety L. Bator Flight Software J. Thayer Science Operations S. Digel, E. do Couto e Silva Support Admin: D. Nicholson

6. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 6 Flight Operations: Preparing for On-Orbit Operations  Real-time commanding of the LAT through the MOC uses scripted PROCs  All LAT commands in the T&C database delivered to the MOC are included in Narrative Procedures (NPs)  All procedures to be exercised during GLAST End-to-End tests –Development schedule is tied to ETE schedule  Separate procedures for activities in GLAST Launch and Early Orbit period (L&EO)  Contingency procedures included  PROCs are verified against LAT testbed before use with GLAST

7. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 7 Flight Ops: Real-time Monitoring  ISOC supports real-time activities and instrument monitoring during GLAST-to-ground contacts (~8x per day) –ISOC monitoring tools have LAT I&T heritage –Used in pre-launch End-to-End tests and Mission Simulations

8. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 8 Flight Ops: LAT Mission Planning  Toolkit for planning weekly LAT on-orbit activity schedules –LAT “Activity” manager –On-board LAT Absolute Time command Sequence (ATS) builder –File upload scheduler –Science run scheduler –Real-time PROC scheduler  MP databases –Orbit data and events –FSW files –LAT PROCs –LAT commands  Tested and rehearsed through GLAST Mission Planning Exercises

9. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 9 Science Operations: Science Data Processing Merge Events Extract Context Extract EBF MOC FastCopy L0 Archive Ingest L0 data Create digi files Analyze charge injection data (LCI) Create recon files and perform event classification Analyze calibration data (LPA) MOOD/MOOT (config DB) Get Calibration from DB Create data analysis ntuples Automated Science Processing Data Receiving Calibrations and L1 processing Output Data Products to LAT Collaboration and GSSC  Pipeline 2 infrastructure ready for ISOC –Tested in ETE tests, Service Challenge/ISOC testing

10. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 10 LAT Collaboration Support for Science Operations  Data Monitoring –Pre-Level 1 monitoring, diagnosing low-level processing (INFN Pisa)  Calibration of Subsystems –Tracker (INFN, UCSC) –Calorimeter (IN2P3, NRL) –Anticoincidence Detector (GSFC, SLAC)  Performance Diagnostics and Diagnosis –Subsystem failure simulations (INFN Bari) –Monitoring the high-level performance of the LAT (instrument response functions, timing) (INFN Perugia, IN2P3 Bordeaux, U. Washington)  Automated Science Processing (aspects of) –Development of GRB detection algorithm (GSFC, Ohio State, U. Denver) –Testing of source monitoring (INFN Perugia)  Background Monitoring –Particle separation (e/p) (Hiroshima U.)  Launch & Early Orbit –LAT Commissioner is J. E. Grove (NRL) –Planning of analyses to be performed in L&EO are being coordinated with broader LAT collaboration –Core agenda for recent ISOC workshop in April/May 2007 http://confluence.slac.stanford.edu/display/ISOC/ISOC+Workshop+Apr+2007+Agenda

11. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 11 Science Ops: Instrument Response Monitoring  Will use celestial sources for monitoring energy scale, energy resolution, PSF –Tested through Service Challenge/ISOC testing

12. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 12 Automated Source Processing: Source Monitoring

13. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 13 GLAST Operations Testing  The ground system operates the GLAST observatory in Mission End-to-End (ETE) tests –Exercise and verify operations interfaces and coordination –Exercise and validate all operations procedures Apr 3 ETE 1ETE 2 Basic & Advanced Commanding ETE 3 ETE 4 Basic & Advanced Operations (include contingencies) ETE 5 Regression Testing, More contingencies ETE 6 Check out At launch site Aug Jul 7,8 Oct Dec Mar 5-11 MPE 1 Aug 15-16 MPE 2 Mission Planning Exercises LEO 1LEO 2LEO 3LEO 4LEO 5 Launch & Early Orbit (spacecraft) Mar 20-21 Jun 26-28 Jul 16-20 Sep 25-27 Nov 7 Inst Com 1 Inst Com 2 Instrument Commissioning May 15-17 Aug 15-16  Mission Simulations are operations rehearsals, not involving the observatory –Mission Planning Exercises simulate weekly mission planning cycle –Instrument Commissioning Simulations rehearse LAT (&GBM) activation and checkout during 60-day Launch and Early Ops period

14. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 14 ISOC Facilities  Construction of the ISOC operations support area and expansion of the LAT Dataflow lab were completed in January 2007 –Co-located in building 84 with ISOC staff offices –Ops support area fully populated with workstations, already in use for GLAST testing –Dataflow lab ready for installation of LAT calibration unit, returned in April from successful beam test LAT Cal Unit @SLAC ISOC Ops Support Area LAT Dataflow Lab and Testbed

15. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 15 Summary  An ambitious GLAST ground operations test phase is underway, constrained by remaining Observatory environmental and functional testing –All ISOC elements hard at work preparing for launch and mission  The ISOC involves collaboration participation and support, particularly in Science Operations and SAS

16. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 16 Backup Slides

17. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 17 ISOC Glossary

18. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 18 ISOC Glossary (II)

19. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 19 ISOC Glossary (III)

20. GLAST Large Area Telescope – ISOC Overview and StatusDOE Annual Review, 13 June 2007 20 ISOC Glossary (IV)