GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003 rev. 2 1 GLAST Large Area Telescope GLAST Large Area Telescope Lowell A. Klaisner Stanford Linear Accelerator Center LAT Instrument Project Manager [email protected]650-926-2726 Gamma Gamma - - ray Large ray Large Area Space Area Space Telescope Telescope
22
Embed
GLAST Large Area Telescope Gamma-ray Large Area … Large Area Telescope ... SSD Ladder Assembly Italy 2592 SSD Procurement, Testing Japan, Italy, SLAC ... NRL+collab CsI Crystals
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 1
GLAST Large Area TelescopeGLAST Large Area Telescope
Lowell A. KlaisnerStanford Linear Accelerator CenterLAT Instrument Project Manager
GammaGamma--ray Large ray Large Area Space Area Space TelescopeTelescope
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 2
Status Status –– Transition from Design to Flight HardwareTransition from Design to Flight Hardware
• Design is mature – Instrument Architecture frozen– Some open engineering and manufacturing issues
• Costs reviewed – US budget for the Fabrication Phase is $133 M– DOE/NASA Joint Oversight Group approval– International Finance Committee
• Infrastructure is in place– Staff with experience in space instrumentation and
experience in HEP detectors– New integration and test facility at SLAC– Working relationships between the NASA Mission Office,
the LAT Project Office, Collaborators and foreign partners in place
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 3
•Objective: Larger field of view (FOV), higher sensitivity, and broader energy detection range than any previously flown gamma-ray mission.
•Mission Duration: 5 yrs (10 yr Goal)•Orbit: 565 km Circular, 28.5° Inclination•Launch Date: February 2007•Launch Vehicle: Delta 2920H-10•Launch Site: Kennedy Space Center
GLAST MISSION SUMMARYGLAST MISSION SUMMARY
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 4
LAT
GBM NaI Sensors
GBM BGO Sensors
+Z
+X +Y
LAT Radiators
GLAST Observatory
Solar Array
Spacecraft
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 5
Instrument StructureInstrument Structure
Anti Coincidence Detector
16 Tracker Modules
Grid
16 Calorimeter Modules
Electronics Modules
Radiators
Mass 3000 KgPower 650 Watts
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 6
LAT Organization ChartLAT Organization Chart
Principal InvestigatorP. Michelson
Instrument ScientistS. Ritz
Senior Science Advisory CommitteeN. Gehrels
Collaboration Science Team
Project ManagerL. Klaisner
D. Horn, DeputyJ. Martin, Deputy
Instrument Advisory CommitteeS. Kahn
Instrument Science PerformanceS. Ritz
AdministrationDebbie NicholsonProject Controls
T. BoysenQA & Mission Assurance
D. MarshManufacturing
J. Clinton
Chief EngineerL. Klaisner, Acting
System EngineeringD. Horn
TKRR. Johnson
Mechanical IntegrationM. Nordby
ACDD. Thompson
DAQ & FSWG. Haller
I&TE. Bloom
SASR. Dubois
MechanicalM. Campell
IOCD. Lung, Acting
CALN. Johnson
EPOL. Cominsky
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 7
2001 2002 2003 2004 2005 2006 2007 2011
Calendar Years
GLAST planned for launch in February 2007
CD-4 ApprovalCD-3 Approval
CD-2 Approval
CD-1 ApprovalCD-0 Approval
Grid Complete
Level 1Milestones
FABRICATION PHASE COMMISSIONINGPHASE
Build & TestFlight Units
ObservatoryI&T
Final DesignEngr’g Models
LAT I&TPrelim. & Sys. Design
EnviroTest
OPERATIONSPHASE
ScheduleFloat
Overall ScheduleOverall Schedule
Launch
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 8
LAT Rebaseline for US FundsLAT Rebaseline for US FundsBudget vs Actuals vs PerformanceDOE + NASA Project Expenditures
4.1 LAT
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
CY 2000 CY 2001 CY 2004 CY 2005
$M
Actual Commitments
ACWP
RB BCWS+ Planned Commitments
RB FUND
Fund
BCWP
BCWS+ Planned Commitments
BCWS
CY 2003CY 2002
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 9
AntiAnti--Coincidence Detector Coincidence Detector -- David Thompson, GSFCDavid Thompson, GSFC
• ACD design is essentially complete– Some mechanical interference issues are being
resolved• Detector/Electronics End-to-End testing
– Required performance confirmed with flight-type scintillator Tile Detector Assembly (TDA), phototubes (PMT), High Voltage Bias Supply (HVBS), Front End Electronics (FREE) card
• Fabrication of mechanical structure is underway– Composite shell and aluminum base frame are in
fabrication
FREE Card
HVBS
Signals from TDAs, PMTs Full-size composite
panel for shell
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 10
Composite Panel & ConvertersItaly, SLAC
Tray Assembly and TestItaly
342
342
Tracker Tracker –– Robert Johnson, UCSCRobert Johnson, UCSC
SSD Ladder AssemblyItaly
2592
SSD Procurement, TestingJapan, Italy, SLAC
10,368
Electronics Design, Fabrication & Test
UCSC, SLAC648
Cable PlantUCSC
Tower StructureItaly, SLAC
Tower Assembly and Test (18)
Italy
18
16 flight modules + 2 spares
GLAST LAT Project Experimental Program Advisory Committee, November 14, 2003
rev. 2 11
Calorimeter Calorimeter –– Neil Johnson, NRLNeil Johnson, NRL