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GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 1 GLAST Large Area Telescope: Electronics,

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Presentation on theme: "GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 1 GLAST Large Area Telescope: Electronics,"— Presentation transcript:

1 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 1 GLAST Large Area Telescope: Electronics, Data Acquisition & Flight Software Overview W.B.S 4.1.7 Gunther Haller Stanford Linear Accelerator Center Manager, Electronics, DAQ & FSW LAT Chief Electronics Engineer haller@slac.stanford.edu Gamma-ray Large Area Space Telescope DRAFT Rev 1

2 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 2 Outline Overview Requirements Status Past Review Recommendations WBS Interfaces Organization Summary Schedule Schedule Milestones Cost Plan

3 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 3 Subsystem Overview

4 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 4 Subsystem Overview (con’t) 16 Tower Electronics Modules –DAQ electronics module (DAQ-EM) –Power-supplies for tower electronics * Primary & Secondary Units shown in one chassis 5 Event-Processor Units (4 + 1 Reserve) –Eventbuilder –Event processing CPU Spacecraft Interface Unit* –Spacecraft interface, control & data –LAT control CPU –LAT command and data interface Power-Distribution Unit (PDU)* –Spacecraft interface, power –LAT power distribution –LAT health monitoring Global-Trigger/ACD-EM/Signal-Distribution Unit* TKR CAL

5 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 5 Requirements Documents Level III Requirements –LAT-SS-019 Level III Trigger & Dataflow Requirements –LAT-SS-136 Level III Power System Requirements Level IV Requirements –LAT-SS-284 Level IV Trigger Requirements –LAT-SS-285 Level IV Dataflow Requirements –LAT-SS-399 Level IV Flight Software Requirements –LAT-SS-183 Level IV Power Supply Requirements Other Requirements documents –433-IRD Spacecraft Interface Requirements –LAT-SS-00010 LAT Instrument Performance Specifications

6 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 6 Electronics, DAQ & FSW Status Balloon-flight effort ended Requirement documents created Electronics system design completed –Final partitioning of functions into locations at bottom of LAT –Interface to all other sub-systems defined Data formats within LAT (most important on Tower Electronics Module) defined Buffer depths on TEM simulated Tower Electronics DAQ Module prototype fabricated and in test Conceptual Design of most units documented Ground-Support Equipment card designed, fabricated, and in use System test with EGSE test-stand, TEM, and Calorimeter Front-end electronics under way. Processor choice baselined Wooden 1:1 model of LAT with electronics boxes built FEMA created

7 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 7 Electronics, DAQ & FSW Status (con’t) Balloon Flight –Validated many elements of Flight Software Management Plan Code development life cycle Code building/distribution Inline documentation generation Dataflow Analysis –Performed discrete event simulation –Designed/documented compact/efficient event format More compact (nearly a factor of two smaller) More “navigable” (easier for filter to read/process/span) Filter Analysis –Generated MC events –Processed events using trial algorithms (continuing effort) Characterizing timing performance Characterizing efficiency/purity Hardware and software development on schedule

8 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 8 Subsystem WBS Interfaces 4.1.8.7 Heat- Pipes 4.1.7 Electronics, DAQ & FSW 4.1.5.6/7 CAL 4.1.4.3.3 /4.2 TKR 4.1.6.4 ACD 5.3 Spacecraft 4.1.7.6 Power System E 4.1.8.5 Thermal Control M E: Electrical M: Mechanical T: Thermal M, T E E E E E E E

9 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 9 Electronics Organization Charts

10 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 10 Key Level III Milestones

11 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 11 Summary Schedule

12 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 12 Electronics Cost & Commitments

13 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 13 Electronics Cost Type

14 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 14 backup

15 GLAST LAT ProjectSLAC Internal Review, April 16-18, 2002 LAT-PR-00664-01Electronics and Flight Software WBS 4.1.7 15 Key Level IV Milestones

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