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GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 1 GLAST Large Area Telescope: LAT Project Management William E.

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Presentation on theme: "GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 1 GLAST Large Area Telescope: LAT Project Management William E."— Presentation transcript:

1 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 1 GLAST Large Area Telescope: LAT Project Management William E. Althouse Stanford Linear Accelerator Center Stanford University LAT Instrument Project Manager wea@slac.stanford.edu Gamma-ray Large Area Space Telescope

2 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 2 LAT Project Management Outline  LAT Project overview: scope, schedule  Participants, WBS, organization, relationships  Funding  System engineering, configuration management  Project management control system description, status  Risk management; contingency management  Major milestones, issues & mitigations, conclusions

3 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 3 Overview

4 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 4 LAT Project Scope Develop & deliver the LAT flight instrument in accordance with Collaboration proposal (Nov. ’99) & GLAST Mission level II specs Ground support equipment Balloon flight test Support integration into GLAST observatory Support launch, post-launch mission operations Develop & provide Instrument Operations Center Develop & provide ground software necessary to support the above Develop ground software for science data analysis Provide management, system engineering, and performance & safety assurance as required Provide E/PO services for GLAST Mission Support & participate in Mission Operations & Data Analysis

5 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 5 Schedule Overview 2000 2001 2002 2003 2004 2005 2010 Formulation Implementation SRR NAR M-CDR PDR I-CDR (Joint DOE/NASA Review) Inst. Delivery Launch Build & Test Engineering Models Build & Test Flight Units Inst. I&T Schedule Reserve Inst.-S/C I&T Ops. Calendar Years 1 st Joint DOE/NASA of GLAST LAT Baseline Review

6 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 6 Organization

7 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 7 LAT Development Organizations California State University at Sonoma (SSU) University of California at Santa Cruz - Santa Cruz Institute of Particle Physics (UCSC/SCIPP) Centre National de la Recherche Scientifique / Institut National de Physique Nucléaire et de Physique des Particules (CNRS/IN2P3) 1 Commissariat à l'Energie Atomique / Direction des Sciences de la Matière/ Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (CEA/DSM/DAPNIA) 1 Goddard Space Flight Center – Laboratory for High Energy Astrophysics (NASA/GSFC/LHEA) Hiroshima University 2 Institute for Space and Astronautical Science (ISAS) 2 Istituto Nazionale di Fisica Nucleare (INFN) Naval Research Laboratory (NRL) RIKEN 2 Royal Institute of Technology (KTH) 3 Stanford University – Hanson Experimental Physics Laboratory (SU-HEPL) Stanford University - Stanford Linear Accelerator Center (SU-SLAC) Stockholm University 3 Texas A&M University – Kingsville University of Washington 1 French Team 2 Japanese GLAST Collaboration (JGC) 3 Swedish GLAST Collaboration (SGC)

8 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 8 Work Breakdown Structure WBS ELEMENTINSTITUTIONS (LEAD) 4.1LAT implementationSU (Michelson) 4.1.1ManagementSU-SLAC (Althouse)SU-HEPL, GSFC/LHEA 4.1.2System EngineeringSU-SLAC (Thurston) 4.1.3(reserved) 4.1.4CalorimeterNRL (N. Johnson)French Team, SGC 4.1.5TrackerUCSC/SCIPP (R. Johnson)INFN, JGC, SU-SLAC 4.1.6AntiCoincidence DetectorGSFC/LHEA (Ormes) 4.1.7Electronics, Data Acquisition & Flight Software SU-SLAC (Haller)CEA/DAPNIA, GSFC/LHEA, NRL, SU-HEPL, UCSC/SCIPP 4.1.8Mechanical SystemsSU-SLAC (Nordby) 4.1.9Instrument Integration & TestSU-SLAC (Nordby)Team 4.1.APerformance & Safety Assurance SU-SLAC (Marsh)Team 4.1.BInstrument Operations CenterSU-HEPL (Williams) 4.1.CEducation & Public OutreachSSU (Cominsky) 4.1.DScience Analysis SoftwareSU-SLAC (Dubois)Team 4.1.ESuborbital Flight TestGSFC/LHEA (Thompson)NRL, SU-HEPL, SU-SLAC, UCSC/SCIPP 4.2Mission Ops and Data Analysis (WBS to be developed after implementation is underway)

9 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 9 GLAST LAT Organization System Engineer T. Thurston, SU-SLAC Integration & Test M. Nordby, SU-SLAC Mech. Systems M. Nordby, SU-SLAC Project Controls T. Boysen, SU-SLAC Performance & Safety Assurance D. Marsh, SU-SLAC Principal Investigator P. Michelson, SU Project Manager W. Althouse, SU-SLAC Instrument Design Team T. Kamae, SU-SLAC Sci. Software R. Dubois, SU-SLAC Team IOC S. Williams, SU-HEPL CAL N. Johnson, NRL France, Sweden TKR R. Johnson, UCSC SLAC, Italy, Japan ACD J. Ormes, GSFC Instrument Scientist S. Ritz, GSFC E/PO L. Cominsky, SSU Collaboration Science Team Electronics & DAQ Flight Software G. Haller, SU-SLAC IPO Balloon Flight D. Thompson, GSFC Team SSAC N. Gehrels, GSFC

10 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 10 SU-SLAC IPO SU-HEPL IOC Mgr. NRL Cal Mgr. UCSC Tkr Mgr. SU-SLAC SAS Mgr. Level III Documents SU-SLAC Chief Elec. Engr. SU-SLAC Mech. Sys. Engr. SU-SLAC I&T Mgr. GSFC/LHEA ACD Mgr. CEA/DAPNIA: French Proj. Mgr IN2P3 SU-SLAC Tkr Engr. INFN Labs Italian Proj. Mgr. (Pisa) JGC Si Det. Mgr. (Hiroshima) Collaboration Institutions UCSC CEA/DAPNIA ( Power Sys) GSFC/ LHEA SU-SLAC SU-HEPLNRL KTH Stockholm Univ. KTH Stockholm Univ. NRL Cal Mgr. NASA/GSFC GLAST Project Office SU-SLAC IPO Level II Documents SU-SLAC IPO Level I Documents DOE/NASA JOG NASA/GSFC GLAST Project Office Relations between LAT Organizations: Technical direction (deliverables flow oppositely) Level I Documents DOE/NASA JOG NASA/GSFC GLAST Project Office SU-HEPL IOC Mgr. CEA/DAPNIA: French Proj. Mgr IN2P3 SU-SLAC Tkr Engr. UCSC Tkr Mgr. INFN Labs Italian Proj. Mgr. (Pisa) JGC Si Det. Mgr. (Hiroshima) SU-SLAC SAS Mgr. Collaboration Institutions Level III Documents SU-SLAC Chief Elec. Engr. UCSC CEA/DAPNIA ( Power Sys) GSFC/ LHEA SU-SLAC Mech. Sys. Engr. SU-SLAC SU-HEPLNRL SU-SLAC I&T Mgr. GSFC/LHEA ACD Mgr. Relationships established by MoAs & IAs Level II Documents

11 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 11 Funding

12 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 12 KTH Stockholm University Wallenberg Foundation ISAS KEK (US- Japan) Ministry of Education, Culture, Sports, Science, & Technology Hiroshima University RIKEN Institute ISAS KEK (US- Japan) Ministry of Education, Culture, Sports, Science, & Technology Hiroshima University RIKEN Institute INFN Labs INFN / ASI CEA/ DAPNIA IN2P3 Labs CNES / CEA / IN2P3 CEA/ DAPNIA IN2P3 Labs CNES / CEA / IN2P3 UCSC DOE IPO DOE NRL GSFC/ LHEA HEPL IPO SSU NASA/GSFC GLAST Proj. Office NASA HQ NRL GSFC/ LHEA Relations between LAT Organizations: Funding Japan INFN Labs INFN / ASI KTH Stockholm University Wallenberg Foundation Italy France Sweden U.S.A. UCSC SU SLAC LAT Collaboration Institutions Funding Sources JGC x HEPL IPO x SSU xx NASA/GSFC GLAST Proj. Office NASA HQ

13 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 13 LAT WBS 4.1 Funding Total = $158.2M

14 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 14 LAT WBS 4.1 Funding

15 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 15 System Engineering

16 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 16 System Engineering System trade studies Decomposition and validation of requirements LAT System and Subsystem Requirements Subsystem Interface Control Documents (ICDs) Technical risk assessment Parts and materials planning, qualification, listing FMECA, fault tree analysis Design integration and verification Support Instrument/Observatory ICD development Coordination with spacecraft contractor Supported by IDT

17 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 17 LAT Trade Studies Many studies complete prior to Nov. ’99 proposal (S. Ritz presentation) Studies completed since selection –Tracker SSD size, pitch  instrument footprint, mass SSD spec finalized, prototypes made and evaluated –Tracker radiator thickness distribution –Grid material: Al vs. CFC Aluminum selected To be resolved –ACD segmentation –Optimize number of on-board processors –Optimize science during intense solar flares –Optimize I&T, calibration and verification testing plans System Engineer supports subsystem internal trade studies

18 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 18 LAT Specification Tree Document under control of the LAT Project Operations Concept Document GLAST00089 LAT Instrument Performance Spec. LAT-SP-00010 LAT - ACD Spec. LAT-SP-00016 LAT - TKR Spec. LAT-SP-00017 LAT - CAL Spec. LAT-SP-00018 T&DF Spec. LAT-SP-00019 Aux. Subsystem Spec. LAT-SP-000xx LOF Spec. LAT-SP-00021 Program Plan Requirements Science Req’ts Document GLAST00010 Mission Assurance Requirements GLAST00110 Mission System Specification GLAST00074 SGL Comm Interface Spec. GBM Instrument Performance Spec. LV Interface Specification SC-SI Interface Specification GLAST00038 Spacecraft Performance Spec. GBM IOC Specification Inter-Center Interface Spec. Mission Operations Center Spec. LAT Interface Spec. LAT-SP-000xx LAT IOC Performance Spec. LAT-SP-00015 LAT SAS Spec. LAT-SP-00020 Science Support Center Spec. Document not under control of the LAT Project Level I Project Specifications Level II(a) System Level III Subsystem Specifications Level II(b) Element Level II System Specifications Level II(b) specs derived from II(a) LAT Performance Specs collect all applicable Level II requirements into one place

19 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 19 Configuration Management All project documentation stored in central database, with individual controlled access via WWW Configuration Item List maintained by LAT Document Librarian Single Document Change Notice (DCN) form for initial release to configuration control (technical baseline), and to record changes; includes provision for red-line markups Subsystem managers approve majority of changes (detailed specifications, drawings) LAT CCB approves changes to level III documents/baselines

20 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 20 Integrated PMCS Performance Measurement Variance, Critical Path Analysis Cost, Budget* (Cobra) Status Reporting (Cobra) Project Management Control System Overview Scheduling (P3) Change Control Accounting Interfaces Funds Management Copy of SLAC systems for PEP II, BaBar, SPEAR III *DOE/NASA funded elements only

21 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 21 PMCS: A “Work in Progress” Developing WBS and WBS dictionary –Developing bottoms-up cost estimate –Performing systematic contingency analysis Primavera P3 –Developing resource loaded schedules Identifying key milestones, external links (held in PM WBS) Developing accounting interfaces Development toward baseline –All inputs due in March –First process cycle in April –Stability by June –Budget and schedule baselines ready in July

22 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 22 Status of PMCS Inputs

23 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 23 4.1 GLAST LAT PROJECT

24 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 24 4.1 GLAST LAT PROJECT INCOMPLETE

25 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 25 Risk Management

26 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 26 Risk Management Risk management tools –Risk identification & management – risk reduction planning –Performance metrics –Contingency (reserve/margin) management Single interface at DOE, NASA, IPO for all requirements –Weekly telecon meetings Thorough validation & verification processes

27 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 27 Risk Reduction Planning Use of engineering models to minimize activities in series with instrument integration, test and delivery schedule –Grid engineering model and instrument thermal model permit independent testing of flight radiators –Electronics EMs to permit early flight software verification, support beam test calibration activities –Tracker, Calorimeter and ACD EMs to support early flight software verification, support equipment and test software/procedure verification –ACD EM to support beam test calibration SSD trade study balanced margins for –Science requirements –Mass  instrument footprint  SSD size –Power  number of signal channels  SSD strip pitch Considering construction of thermal vacuum test facility at SLAC to reduce risk of dependence on off-site facilities Study team to develop calibration plan, I&T strategies

28 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 28 Technical Performance Metrics Technical MetricLevel II Requirement Trigger PointEstimate at Proposal Current Estimate Instrument Mass, kg< 3000272525572521 Instrument Electrical Power, W< 650565518493 Center of Gravity Offset from Instrument Interface Plane, cm < 252523.217.2 Horizontal Dimension, m< 1.81.761.731.74 Instrument Dead Time,  s < 1004020 Background Rejection10 5 :1 3 x 10 5 :1 Field of View, sr22.22.4  95% /  68% < 32.82.3 Single Photon Angular Resolution (68%) @ 1 GeV, deg 0.50.450.37 Peak Effective Area, cm 2 8,0009,00012,90011,000 Energy Resolution @ 1 GeV, %10977

29 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 29 Instrument Mass

30 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 30 Instrument Power

31 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 31 LAT DOE & NASA Cost

32 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 32 Major Milestones, Issues, Conclusions

33 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 33 LAT Project Milestones Instrument System Requirements Review (SRR) 9/28/00 (C) LAT Preliminary Design Review (PDR) 8/6/01 LAT Critical Design Review (CDR) 8/5/02 Subsystems deliveries for beam test calibrations 5/15/03-8/1/03 Calibration unit ready for beam tests 9/1/03 Subsystem deliveries for instrument I&T 10/1/03-12/24/03 Calibration activities complete 1/26/04 –Flight hardware delivered to LAT integration LAT ready for environmental testing 4/9/04 LAT Pre-Ship Review (PSR) 10/7/04 LAT ready for integration with Observatory 12/22/04 GLAST launch 9/05

34 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 34 Project Issues and Mitigations International commitments –Aggressively working to get signed MoAs and International Agreements DOE/NASA Implementing Arrangement –Working to facilitate agreement Flight software development –Aggressively recruiting additional manpower Balloon flight schedule –Working to reduce conflicting demands on shared personnel Lack of SLAC on-site space experienced EEE parts engineer –Seeking local contractor help Use of off-site environmental test facilities –Proposed on-site thermal vacuum test facility Inadequate reserves to deal with significant budget/schedule hiccups by any major sponsor

35 GLAST LAT ProjectDOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001 W. Althouse 35 Project Manager’s Conclusions We have developed the organization to do the job –We have identified and are strengthening weak spots Technical design was very mature at start of Formulation Phase –We are focusing on developing a sound project basis Project is schedule driven, compressed between availability of funding and launch –After assuring performance and safety, tracking and controlling schedule progress is paramount Combined DOE, NASA and other domestic and foreign partner resources make the ambitious LAT goals possible Don’t go to launch pad with our fingers crossed –Do the necessary planning, finish design and fab as early as prudent, to leave maximum time for testing –Test thoroughly to develop confidence

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