GLAST LAT Project
Gamma-ray Large
Area Space
Telescope
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
GLAST Large Area Telescope:
LAT Project Management
William E. Althouse
Stanford Linear Accelerator Center
Stanford University
LAT Instrument Project Manager
wea@slac.stanford.edu
W. Althouse
1
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
2
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Overview
W. Althouse
3
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
4
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Schedule Overview
Calendar Years
2000
2003
2002
2001
2005
2004
2010
I-CDR
SRR
PDR NAR
(Joint DOE/NASA
Review)
Inst. Delivery
Launch
Implementation
Formulation
Build & Test
Engineering Models
1st Joint
DOE/NASA of
GLAST LAT
W. Althouse
M-CDR
Baseline
Review
Build & Test
Flight Units
Ops.
Inst.
I&T
Inst.-S/C
I&T
Schedule
Reserve
5
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Organization
W. Althouse
6
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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 University2
Institute for Space and Astronautical Science (ISAS)2
Istituto Nazionale di Fisica Nucleare (INFN)
Naval Research Laboratory (NRL)
RIKEN2
Royal Institute of Technology (KTH)3
Stanford University – Hanson Experimental Physics Laboratory (SU-HEPL)
Stanford University - Stanford Linear Accelerator Center (SU-SLAC)
Stockholm University3
Texas A&M University – Kingsville
1French Team
University of Washington
2Japanese GLAST Collaboration (JGC)
3Swedish GLAST Collaboration (SGC)
W. Althouse
7
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Work Breakdown Structure
WBS ELEMENT
INSTITUTIONS (LEAD)
4.1
LAT implementation
SU (Michelson)
4.1.1
Management
SU-SLAC (Althouse)
4.1.2
System Engineering
SU-SLAC (Thurston)
4.1.3
(reserved)
4.1.4
Calorimeter
NRL (N. Johnson)
French Team, SGC
4.1.5
Tracker
UCSC/SCIPP (R. Johnson)
INFN, JGC, SU-SLAC
4.1.6
AntiCoincidence Detector
GSFC/LHEA (Ormes)
4.1.7
Electronics, Data Acquisition
& Flight Software
SU-SLAC (Haller)
4.1.8
Mechanical Systems
SU-SLAC (Nordby)
4.1.9
Instrument Integration & Test
SU-SLAC (Nordby)
Team
4.1.A
Performance & Safety
Assurance
SU-SLAC (Marsh)
Team
4.1.B
Instrument Operations Center
SU-HEPL (Williams)
4.1.C
Education & Public Outreach
SSU (Cominsky)
4.1.D
Science Analysis Software
SU-SLAC (Dubois)
Team
4.1.E
Suborbital Flight Test
GSFC/LHEA (Thompson)
NRL, SU-HEPL, SU-SLAC, UCSC/SCIPP
4.2
Mission Ops and Data
Analysis
(WBS to be developed after implementation is underway)
W. Althouse
SU-HEPL, GSFC/LHEA
CEA/DAPNIA, GSFC/LHEA, NRL,
SU-HEPL, UCSC/SCIPP
8
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
GLAST LAT Organization
Collaboration
Science Team
E/PO
L. Cominsky, SSU
Principal Investigator
P. Michelson, SU
Instrument Scientist
SSAC
N. Gehrels, GSFC
S. Ritz, GSFC
IPO
Project Manager
Instrument Design Team
W. Althouse, SU-SLAC
T. Kamae, SU-SLAC
System Engineer
Project Controls
T. Thurston, SU-SLAC
T. Boysen, SU-SLAC
Electronics & DAQ
Flight Software
Integration & Test
M. Nordby, SU-SLAC
G. Haller, SU-SLAC
Performance & Safety
Assurance
Mech. Systems
M. Nordby, SU-SLAC
TKR
CAL
R. Johnson, UCSC
SLAC, Italy, Japan
N. Johnson, NRL
France, Sweden
W. Althouse
D. Marsh, SU-SLAC
ACD
IOC
J. Ormes, GSFC
S. Williams, SU-HEPL
Sci. Software
Balloon Flight
R. Dubois, SU-SLAC
Team
D. Thompson, GSFC
Team
9
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Relations between LAT Organizations:
Technical direction (deliverables flow oppositely)
DOE/NASA JOG
Level I Documents
Relationships
established by
MoAs & IAs
Level II Documents
NASA/GSFC
GLAST Project
Office
SU-SLAC IPO
Level III Documents
NRL
GSFC/LHEA
UCSC
Cal Mgr.
ACD Mgr.
Tkr Mgr.
KTH
CEA/DAPNIA:
SU-SLAC
JGC
Stockholm
Univ.
French Proj. Mgr
Tkr Engr.
Si Det. Mgr.
(Hiroshima)
IN2P3
INFN Labs
Italian Proj.
Mgr. (Pisa)
W. Althouse
SU-SLAC
SU-HEPL
I&T Mgr.
IOC Mgr.
SU-SLAC
SU-SLAC
SU-SLAC
Mech. Sys.
Engr.
Chief Elec.
Engr.
SAS Mgr.
UCSC
NRL
CEA/DAPNIA
(Power Sys)
SU-HEPL
GSFC/
LHEA
Collaboration
Institutions
SU-SLAC
10
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Funding
W. Althouse
11
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Relations between LAT Organizations: Funding
France
U.S.A.
CNES /
CEA /
IN2P3
NASA HQ
Japan
Italy
INFN / ASI
DOE
NASA/GSFC
GLAST Proj.
Office
Ministry of
Education,
Culture,
Sports,
Science, &
Technology
Sweden
Wallenberg
Foundation
KEK
(USJapan)
Funding
Sources
LAT
Collaboration
Institutions
CEA/
DAPNIA
SU
SLAC
x
x
x
IPO
x
INFN Labs
KTH
Stockholm
University
IN2P3
Labs
JGC
ISAS
GSFC/
LHEA
NRL
HEPL
UCSC
RIKEN
Institute
Hiroshima
University
SSU
SSU
W. Althouse
12
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
LAT WBS 4.1 Funding
Sweden
5.0%
Japan
4%
Total = $158.2M
Italy
12%
NASA
44%
France
11%
Stanford
0.3%
UW
0.3%
UCSC
2%
DOE
22%
W. Althouse
13
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
LAT WBS 4.1 Funding
45.0
180.0
Sweden
Japan
40.0
160.0
Italy
France
35.0
140.0
Stanford
30.0
120.0
UCSC
DOE
25.0
100.0
NASA
Cumulative Total
20.0
80.0
15.0
60.0
10.0
40.0
5.0
20.0
0.0
Cumulative Total (RY M$)
Contribution (RY M$)
UW
0.0
FY00
FY01
FY02
FY03
FY04
FY05
Fiscal Year
W. Althouse
14
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
System Engineering
W. Althouse
15
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
16
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
17
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Level II(a) System
Program Plan
Requirements
Mission Assurance
Requirements
GLAST00110
Mission System
Specification
GLAST00074
LAT Instrument
Performance Spec.
LAT-SP-00010
LAT - ACD Spec.
LAT-SP-00016
SGL Comm
Interface Spec.
Document under control of the LAT Project
GBM IOC
Specification
• LAT Performance
Specs collect all
applicable Level II
requirements into
one place
LAT IOC
Performance Spec.
LAT-SP-00015
LAT - CAL Spec.
LAT-SP-00018
Aux. Subsystem Spec.
LAT-SP-000xx
• Level II(b) specs
derived from II(a)
GBM Instrument
Performance Spec.
Inter-Center
Interface Spec.
Mission Operations
Center Spec.
LAT - TKR Spec.
LAT-SP-00017
T&DF Spec.
LAT-SP-00019
W. Althouse
SC-SI Interface
Specification
GLAST00038
LV Interface
Specification
Science Support
Center Spec.
Level III
Subsystem Specifications
Science Req’ts
Document
GLAST00010
Operations Concept
Document
GLAST00089
Spacecraft
Performance Spec.
Level II(b) Element
Level II System Specifications
Level I
Project
Specifications
LAT Specification Tree
LAT SAS Spec.
LAT-SP-00020
LAT Interface Spec.
LAT-SP-000xx
LOF Spec.
LAT-SP-00021
Document not under control of the LAT Project
18
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
19
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Integrated PMCS
Project Management
Control System
Overview
Scheduling
(P3)
Change
Control
Status
Reporting
(Cobra)
Cost, Budget*
(Cobra)
Accounting
Interfaces
*DOE/NASA
funded elements
only
Performance
Measurement
Funds
Management
Variance,
Critical Path
Analysis
• Copy of SLAC systems for PEP II, BaBar, SPEAR III
W. Althouse
20
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
21
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Status of PMCS Inputs
Subsystem
WBS
Work
WBS
Cost
Contingency
Pkg.
Dictionary Estimate
Analysis
Schedule Planning
4.1.1 Management
C
C
I
R
I
C
4.1.2 Sys. Eng.
I
4.1.4 Tracker
I
R
I
4.1.5 Calorimeter
I
R
R
4.1.6 ACD
I
4.1.7 Electronics
I
R
I
R
I
I
4.1.8 Mech. Sys.
I
R
R
R
I
C
4.1.9 I&T
I
R
R
R
I
C
4.1.A Perf & Safety
I
R
C
R
I
4.1.B IOC
I
R
R
I
4.1.C E/PO
I
R
I
4.1.D Science Anal. SW
I
R
I
4.1.E. Balloon Flight
I
R
R
R
R
I
I
I
R
I
I
R = Received Inputs
I = Iterating/In Progress (w/ Subsystem Manager)
C = Confirmed/Completed (w/ Subsystem Manager)
W. Althouse
22
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
4.1 GLAST LAT PROJECT
A c tivity
ID
A c tivity
D e scr i ption
Or ig
Re m
E a r ly
D ur
D ur
S tar t
E a r ly
Finish
FY 00
FY 01
FY 02
FY 03
FY 04
FY 05
FY 06
FY 07
Gamm a Ray Large Area Space Telescope
+ 4 .1.1 IN S TR U ME N T M A N A GE ME N T
1,3 68
04 /03/0 0
09 /30/0 5
1,3 68
04 /03/0 0
09 /30/0 5
1,3 28
03 /02/0 0A
07 /05/0 5
1,3 68
04 /03/0 0
09 /30/0 5
1,3 68
04 /03/0 0
09 /30/0 5
1,3 68
04 /03/0 0
09 /30/0 5
1,2 41
10 /02/0 0
09 /30/0 5
1,2 41
10 /02/0 0
09 /30/0 5
1,3 68
04 /03/0 0
09 /30/0 5
1,2 41
10 /02/0 0
09 /30/0 5
1,3 37
05 /16/0 0
09 /30/0 5
1,0 43
04 /03/0 0
06 /14/0 4
22 7
10 /03/0 0
08 /31/0 1
+ 4 .1.2 S Y S TE M E N GIN E E R IN G
+ 4 .1.4 TR A C K E R
+ 4 .1.5 C A LOR IME TE R
+ 4 .1.6 A N TIC O IN C ID E N C E D E TE C TOR
+ 4 .1.7 E LE C TR ON IC S
+ 4 .1.8 ME C H A N IC A L S Y S TE M S
+ 4 .1.9 IN S TR U ME N T IN TE GR A TIO N A N D TE S TIN G
+ 4 .1.A P E R FO R M A N C E A N D S A FE TY A S S U R A N C E
+ 4 .1.B LA T IN S TR U ME N T OP E R A TION S C E N TE R
+ 4 .1.C E D U C A TIO N A N D P U B LIC OU TR E A C H
+ 4 .1.D S C IE N C E A N A LY S IS S OFTW A R E
+ 4 .1.E S U B OR B ITA L FLIG H T TE S T
DRAFT
W. Althouse
23
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
4.1 GLAST LAT PROJECT
x 1 00 00 0
x 1 00 00 00
80
22
20
70
18
60
16
INCOMPLETE
14
50
12
40
10
30
8
6
20
4
10
2
MA JU
Y N
JU L
A USGEOC
P NTODVE JA
C FE
N MA
B A
RPMA
R JU
Y N
JU LA USGEOC
P NTODVE C
JA FE
N MA
B A
RPMA
R JU
Y N
JU L
A USGE OC
P NTODVE JA
C FE
N MA
B A
RPMA
R JU
Y N
JU L
A USGEOC
P NTODVE JA
C N
FE B
MA A
RPMA
R JU
Y N
JU L
A USGEOC
P NTODVE JA
C FE
N MA
B A
RPMA
R JU
Y N
JU L
A USGEOC
P NTODVE C
JA FE
N MA
B A
RPMA
R JU
Y N
JU L
A USGE OC
PN OTV
FY 00
FY 01
FY 02
FY 03
FY 04
FY 05
FY 06
Re s o u rc e /Co s t Pr o fi l e L e g e n d
La bor
To ta l e a rl y c o s t p e r M o n th (Cu r re n t E s ti m a te )
Tra v e l
De ta i l s c a l e (l e ft) :
M&S
Cu m u l a ti v e s c a l e (ri g h t): X 1 0 0 0 0 0 0
X 100 000
Cu rre n t e s ti m a te c u rv e
W. Althouse
24
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Risk Management
W. Althouse
25
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
26
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
27
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Technical Performance Metrics
Technical Metric
Level II
Requirement
Trigger Point
Estimate at
Proposal
Current
Estimate
Instrument Mass, kg
< 3000
2725
2557
2521
Instrument Electrical Power, W
< 650
565
518
493
Center of Gravity Offset from
Instrument Interface Plane, cm
< 25
25
23.2
17.2
Horizontal Dimension, m
< 1.8
1.76
1.73
1.74
Instrument Dead Time, ms
< 100
40
20
20
Background Rejection
105:1
105:1
3 x 105:1
3 x 105:1
2
2.2
2.4
2.4
q95%/q68%
<3
2.8
2.3
2.3
Single Photon Angular
Resolution (68%) @ 1 GeV,
deg
0.5
0.45
0.37
0.37
8,000
9,000
12,900
11,000
10
9
7
7
Field of View, sr
Peak Effective Area, cm2
Energy Resolution @ 1 GeV, %
W. Althouse
28
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Instrument Mass
Item
Estimate
(Kg)
ACD
199.0
60.8
30.6%
Tracker
487.4
99.0
20.3%
Calorimeter
1,462.9
86.7
5.9%
Electronics
180.2
75.2
41.7%
Grid/thermal
191.7
78.3
40.8%
Instrument Total
2,521.2
400.0
15.9%
Inst. + Reserve
2,921.2
Requirement
3,000.0
Current LAT Reserve + Margin:
= 479 kg
= 19% of current estimated mass
Goal for PDR Margin plus Reserve > 9.9%
Goal for CDR Margin plus Reserve > 5.4%
Reserve
(Kg)
%
Proposed changes to mass baseline which exceed Trigger require
approval by DOE LAT & NASA GLAST Project Managers
LAT Mass
3100
78.8
3000
% Margin
2.6%
2900
Margin + Reserve
478.8
% Margin + Reserve
19.0%
Goals estimated using guidelines
given in ANSI/AIAA G-020-1992
"Estimating and Budgeting Weight
and Power Contingencies for
Space Craft Systems"
W. Althouse
Mass - KG
Unallocated Margin
Requirement
Trigger
2800
2700
· Prelim inary Baseline
Current
2600¨ Estim
ate
2500
Proposal
2400
Jan-99
Jan-00
SRR
I-PDR
Jan-01
I-CDR
Jan-02
Jan-03
Ship
Jan-04
Jan-05
Launch
Jan-06
29
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Instrument Power
Item
Estimate
(Watts)
ACD
29.0
26.0
89.7%
Tracker
219.0
40.0
18.3%
Calorimeter
116.0
16.0
13.8%
Trigger & Data Flow
98.0
44.0
44.9%
Grid/thermal
31.0
20.0
64.5%
Instrument Total
493.0
146.0
29.6%
Inst. + Reserve
639.0
Requirement
650.0
700
Unallocated Margin
11.0
650
% Margin
1.7%
Current LAT Reserve + Margin:
= 157 W
= 32% of current estimated power
Goal for PDR Margin plus Reserve > 15%
Goal for CDR Margin plus Reserve > 10%
Reserve
(Watts)
%
Proposed changes to power baseline which exceed Trigger
require approval by DOE LAT & NASA GLAST Project Managers
Margin + Reserve
157.0
% Margin + Reserve
31.8%
Goals estimated using guidelines
given in ANSI/AIAA G-020-1992
"Estimating and Budgeting Weight
and Power Contingencies for
Space Craft Systems"
W. Althouse
Power - Watts
LAT Power
Requirement
600
Trigger
550
500
· Prelim inary Baseline
¨ Current
Estim ate
450
Proposal
SRR
I-PDR
I-CDR
Ship
Launch
400
Jan-99
Jan-00
Jan-01
Jan-02
Jan-03
Jan-04
Jan-05
Jan-06
30
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
LAT DOE & NASA Cost
WBS Element
Current LAT Reserves (DOE+NASA funded budgets):
= $23.0M
= 28.5% of Total Estimated Costs
Proposed changes to budget baseline which exceed Trigger
require approval of DOE LAT & NASA GLAST Project Managers
Estimate (RY$M)
DOE NASA Total
4.1.1 Management
4.6
1.4
6.1
4.1.2 System Engrg
4.0
4.0
11.0
11.0
4.1.3 Reserved
4.1.5 Calorimeter
4.1.6 ACD
11.4
11.4
9.5
9.5
4.1.7 Electronics
2.4
17.0
19.4
4.1.8 Mechanical
2.2
2.8
5.0
4.1.9 Inst. I&T
2.2
2.5
4.7
4.1.A Perf &Safety
2.6
2.6
4.1.B Inst. Ops. Center
2.1
2.1
4.1.C E/PO
1.5
1.5
4.1.D Sci. Anal. Software
2.7
2.7
4.1.E Balloon Flight
0.8
0.8
Agency Totals
28.9
51.8
LAT Total Estimated Cost
80.7
Approved Baseline
TBD
Approved Total Project Cost
Contingency
% Contingency
W. Althouse
$103.7
$23.0
LAT Estimated Cost & Budget
105
DOE+NASA Cost, $M
4.1.4 Tracker
"Approved" Total Project Cost
Trigger
95
85
¨ Current Cost Estimate
Proposal
75
Oct-99
SRR
Oct-00
I-PDR
I-CDR
Start I&T
Ship Inst.
Oct-01
Oct-02
Oct-03
Oct-04
Launch
Oct-05
28.5%
31
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
Major Milestones, Issues, Conclusions
W. Althouse
32
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
• Subsystem deliveries for instrument I&T
9/1/03
10/1/03-12/24/03
• Calibration activities complete
1/26/04
– Flight hardware delivered to LAT integration
• LAT ready for environmental testing
• LAT Pre-Ship Review (PSR)
• LAT ready for integration with Observatory
• GLAST launch
W. Althouse
4/9/04
10/7/04
12/22/04
9/05
33
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
34
GLAST LAT Project
DOE/NASA Review of the GLAST/LAT Project, Feb. 13-15, 2001
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
W. Althouse
35