1. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 1 GLAST Large Area Telescope: Face to Face Meeting November 17, 2004 AntiCoincidence Detector (ACD) Subsystem WBS: 4.1.6 David J. Thompson Thomas E. Johnson NASA Goddard Space Flight Center Subsystem Manager/Instrument Manager David.J.Thompson@nasa.gov Thomas.E.Johnson@nasa.gov Gamma-ray Large Area Space Telescope

2. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 2 Outline Cost Plan – Variance Summary Lien List Manpower Plan FY05 Cost/Manpower Overview FY06 & 07 Cost/Manpower Overview Schedule Backup Material –Critical Path –Descope Options –Assumptions and Risks

3. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 3 COST PLAN – VARIANCE SUMMARY ACD SubsystemEstimate at Complete (EAC), ($K) Plan at Complete (PMCS), ($K) Variance ($K) 4.1.6.1 Management/Systems/Science3156.33930.0226.3 4.1.6.2 Safety and Mission Assurance817.7585.0223.9 4.1.6.3 Tile Shell Assembly3723.03552.0181.0 4.1.6.4 Base Electronics Assembly5598.45242.0356.4 4.1.6.4 BEA (SLAC)68464044 4.1.6.5 Micrometeoroid Shield/Thermal Blanket 578.2335.0243.2 4.1.6.6 Mech Qual & Calibration Unit160108.052.0 4.1.6.7 Integration and Test639.0368.0271.0 4.1.6.8 LAT Integration and Test66.836.030.8 4.1.6.B Ground Support Equipment951.2799.0152.2 TOTAL17,340.615,595.01745.6

4. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 4 Lien List Lien DescriptionFY05 Liens* EGSE SW Support$60K FY05 portion of grassroots estimate (4-04)$226K MS/TB$113K Reduce Efficiency verif. Test duration($20K) Reduce shipping time($10K) Schedule Delay (including 2.5 month fab phase delay)$1230.6K Streamline conformal coating FREE boards($4K) SLAC ASIC variance$44K LAT I&T Support (½ time technician)$31K Science Support for FY05 and ½ of FY06 (Grad Student)$75K TOTAL$1745.6K * Updated Lien list from the lien list provided by Jay Doubrava on 10/13/04

5. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 5 Manpower Plan The following table provides both the Contractor and Civil Servant manpower plan for FY05-FY07 Assumptions: –ACD RFI and integration to the LAT date is 5/17/04. –ACD Support Team ramps down significantly after 5/17/04. –From July – September, 1.8 FTE’s are for Science Support and the remaining support is for Systems Engineering and Management.

6. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 6 FY05 Cost/Manpower Overview by Task

7. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 7 FY06 & 07 Cost/Manpower Overview by Task Assumptions: Civil Service personnel salaries are paid by Goddard, not the LAT. Labor consists of science support only.

8. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 8 Initial TDA/TSA I&T in B7 ACD Subsystem Efficiency Verification test (include rotate ACD 90 degree) EMI/EMC Test Pre-ship Review (PSR) Vibration Test Thermal Balance/ Thermal-Vac Test Mass Properties ACD ship to SLAC Pre- Environmental Review (PER) Acoustic Test Post-ship Checkout & Full Functional Test at SLAC Install & test 1 st & 2 nd flight Chassis onto ACD Qual Electronics Chassis Environmental Test 1 st flight chassis Environmental Acceptance Test The remaining Seven Flight Chassis Environmental Acceptance tests 10/4 – 11/3011/25 – 12/712/2 – 1/11 ACD Full Functional Test Install Thermal Blanket & MMS 2/10/05 Assemble last 2 rows of TDAs & WSF (124-130, 224-230, 324-330, 424-430) onto TSA ACD Integration complete 12/29/04 – 1/14/05 1/14/05 – 1/25/05 6/10 – 11/19 12/7 – 12/13 Install & test remaining six flight Chassis onto ACD 12/14 – 1/13 1/14/051/25/05 – 1/27/05 1/27/05 – 2/10/05 2/11/05 – 2/23/052/23/05 – 3/4/05 3/4/05 –3/10/053/10/05 – 4/7/054/7/05 – 4/8/05 4/11/05 4/12/05-4/19/05 (was 3/26/05 – 4/2/05) 4/19/05 – 5/17/05 Schedule Flow

9. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 9 BACKUP SLIDES

10. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 10 ACD Critical Path - PMTs ACTIVITYCOMPLETION DATE First 10 PMTs completed11/23/04 11-34 PMTs complete11/29/04 # 1 Dual EC Assy12/10/04 35-69 PMTs complete12/6/04 # 1 Single EC Assy12/15/04 # 2 Single EC Assy12/15/04 70-104 PMTs complete12/13/04 #2 Dual EC Assy12/20/04 105-139 PMTs complete12/18/04 #3 Dual EC Assy12/29/04 140-174 PMTs complete12/24/04 # 3 Single EC Assy1/5/05 #4 Single EC Assy1/8/05 175-194 PMTs complete1/3/04 # 4 Dual EC Assy1/13/04 BEA Integration Complete1/13/05 ACD Integration Complete1/14/05

11. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 11 Descope Options Perform environmental testing at the LAT Level. –The ACD Subsystem would not be fully qualified prior to integration to the LAT. This would transfer schedule and cost risk to LAT integration. The following table provides the cost and schedule savings for eliminating testing at the ACD Subsystem level. ACTIVITYDURATION (days)COST ($K) EMI/EMC Testing9$50.4 Vibration Testing13$44.9 Acoustic Testing8$27.1 TVAC/Thermal Balance33$158.2 Mass Properties5$14.4 TOTAL68$295

12. GLAST LAT ProjectNovember 17, 2004 AntiCoincidnce Detector 12 COST PLAN – Assumptions and Risks Assumptions –Success based plan. Rapid resolution of current technical issues (PMTs and EGSE) is required to stay on plan. –ACD RFI date is 5/17/04. –Minimal support (details provided on slides 3,4,6,&7) is provided following integration of the ACD to the LAT. Risks –No contingency in ACD cost plan. –A later than 5/17/04 integration date to the LAT will not allow the full planned ramp down of ACD personnel.