1. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 1 Instrument Operations Center (IOC) and Science Analysis Software (SAS) Scott Williams Hanson Experimental Physics Laboratory (HEPL) Stanford University Scott.Williams@stanford.edu R.Dubois Stanford Linear Accelerator Center Stanford University Richard@slac.stanford.edu

2. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 2 IOC and Science Analysis Software  IOC & SAS functions  Organization  Short and Longer Term Work Plans  Cost Summary  Issues Outline

3. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 3 Mission Operations Architecture LAT Instrument Operations Center * From the GLAST Operations Concept Document

4. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 4 GLAST Mission Operations Functions Summarized from Ground Systems Functional Allocation Team Study

5. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 5 IOC Formulation Schedule

6. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 6 Science Data Processing –Receive Level 0 data from IOC –Automatically process Level 0 data to Level 1 –Facilitate LAT monitoring and updates of calibrations –Feed back high level monitoring info to IOC –Generate Monte Carlo for instrument simulation, algorithm development etc –Allow for data reprocessing –Generate high level data products –Develop analysis tools and platforms –Deliver data products and algorithms to SSC –Protect via archive all data, at SLAC and HEASARC ~ 3GB of data arrives per day

7. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 7 The Critical Areas Simulation/reconstruction software –Instrument simulation and reconstruction –PSF, A eff, background rejection Supports instrument design and science studies Infrastructure –Code framework –Code/release management –Documentation Good practices and the glue that holds the software together Level 1 Data Processing –Production data and MC processing –Near real-time feedback to IOC Supports detailed performance tracking; Mock Data Challenges; input to Science Science Analysis tools –High level utilities Supports extraction of Science from the data – Event database technology Extraction of science/sharing with SSC

8. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 8 Timeline 2001 20022003200420052006 GlastSim/G4 Event Display Balloon Science Tools, Analysis Platforms Calibrations Performance Tuning, Tracking Data Production Facility ………. near real-time monitoring Polishing & maintenance + post-launch panic CY Event DB Technology & Design Release Manage MDC

9. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 9 Group Communications software team is integrated subsystem folks are matrixed between subsystem and software group part of same development process as other components of software software team is integrated subsystem folks are matrixed between subsystem and software group part of same development process as other components of software use cvs for distributed code development Repository at SLAC use web conferencing tools for meetings Weekly General, Core & CAL; soon TKR Used for impromptu discussions use instant messenger tool for quicky discussions Use MS NetMeeting for point-to- point discussions and Windows remote debugging via desktop sharing Software Weeks every 4 months Core working meeting between Software Wks

10. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 10 IOC WBS Organization

11. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 11 SAS WBS Organization

12. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 12 LAT Simulation & Recon Software – Flight Proposal Baseline 100 MeV  15 GeV proton 2, 25, 40 GeV e - 0.1, 7 GeV  TKR CAL Well-developed photon recon, background rejection algorithms - part of the project effort since ’93. Well-developed photon recon, background rejection algorithms - part of the project effort since ’93.

13. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 13 Status IOC is in formulation phase through FY’01 Improving Simulation and Reconstruction Addressed infrastructure issues in 2000/2001 – support for the long run Providing balloon flight and PDR preparation support through summer ’01 Continuing with requirements and specifications for science tools and calibrations, with first prototypes this year

14. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 14 SAS Issues Heavy load on team to support both the balloon flight and PDR prep –Need additional 2-3 FTE for core and DPF work –Toby Burnett has pending NSF request Extremely important to our effort that it succeed!! –European & Japanese collaborators have committed to supporting the core effort Want major Sim/Recon release by late 2001 to let us shift focus to Calibrations and analysis issues Need to get started on Data Processing Facility –Balloon & PDR support as early prototyping opportunities –Mock Data Challenge in mid 2002 Technology for event, photon & exposure databases and techniques for indexing the photons (time, spatial tessellations) –Studies underway to evaluate technologies

15. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 15 IOC Milestones Instrument Operations Center (IOC) Requirements Review04/18/01 LAT Instrument PDR08/06/01 IOC PDR08/22/01 LAT Instrument CDR 08/05/02 IOC S/W Release 107/28/03 IOC CDR (TBR)08/04/03 IOC S/W Release 212/18/03 Calibration Unit Beam Test Complete02/05/04 LAT Ops Facility Validation & Verification Complete06/21/04 LAT TV Test Complete08/26/04 Ground Systems Compatibility Test (TBR)11/21/04 Mission Sequence Test (TBR)03/21/05 End-to-end Test (TBR)06/21/05 Launch09/05 LAT Checkout Complete + 30 days (TBR)

16. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 16 4.1.B LAT Instrument Operations Center

17. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 17 Interim IOC Cost Estimate* (Escalated K$) *DOE/NASA funding.

18. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 18 Science Analysis Software Milestones Science Analysis Software (SAS) Requirements Review04/25/01 Instrument Simulation/Event Recon Release (to support PDR); Management & Verification in place06/01/01 LAT Instrument PDR08/06/01 Science Analysis Software PDR09/05/01 Complete Mock Data Challenge – CDR run-up07/15/02 LAT Instrument CDR08/05/02 Science Analysis Software CDR09/04/02 Implement production version of Data Production Facility06/01/04 End-to-end testing, final Mock Data Challenge complete06/01/05

19. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 19 4.1.D Science Analysis Software

20. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 20 Interim Science Analysis Software Cost Estimate* (Escalated K$) *DOE/NASA funding.

21. GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 IOC – S.Williams SAS - R.Dubois 21 Summary Simulation and reconstruction are in excellent shape for this stage of the project –Needed infrastructure improvements for long-term support and development are well underway –Will be a challenge to support the balloon and PDR Plan for required science analysis calibration and high level tools –In progress Workplan in place – in process of loading into PMCS Requirements, initial QA/QC this summer Mock Data Challenge in mid 2002 –Prototype IOC, Processing Facility and Event DB