James Webb Space Telescope (JWST) Project Status for the AAS Town Hall

Phil SabelhausJWST Program Manager

January 5, 2010

Organization Mission Lead: Goddard Space Flight Center International collaboration with ESA & CSA Prime Contractor: Northrop Grumman Space Technology Instruments:

― Near Infrared Camera (NIRCam) – Univ. of Arizona― Near Infrared Spectrograph (NIRSpec) – ESA― Mid-Infrared Instrument (MIRI) – JPL/ESA― Fine Guidance Sensor (FGS) – CSA

Operations: Space Telescope Science Institute

Description

Deployable infrared telescope with 6.5 meter diameter segmented adjustable primary mirror

Cryogenic temperature telescope and instruments for infrared performance

Launch June 2014 on an ESA-supplied Ariane 5 rocket to Sun-Earth L2

5-year science mission (10-year goal)

James Webb Space Telescope (JWST)James Webb Space Telescope (JWST)

www.JWST.nasa.gov

JWST Science Themes

End of the dark ages: First light and reionization

The assembly of galaxies

Birth of stars and proto-planetary systems

Planetary systems and the origin of life

Optical Telescope Element (OTE)

Integrated Science Instrument Module (ISIM)

Sunshield

Spacecraft Bus

Warm Sun-facing Side

Cold Space-facing Side

Optical Telescope Element (OTE)

Integrated Science Instrument Module (ISIM)

Sunshield

Spacecraft Bus

Warm Sun-facing Side

Cold Space-facing Side

3

JWST Full Scale Model at the GSFCJWST Full Scale Model at the GSFC

4

5

JWST Compared with other TelescopesJWST Compared with other Telescopes

Hubble Space Telescope (HST): – 2.7 x diameter, 2.7 x longer wavelength

HST NICMOS: – 189 x FoV, – 38 x better sensitivity at K band, 8 x at H band

Spitzer: – 8 x Spitzer diameter – Diffraction limited at 2 microns vs. 6 microns – 8 to 24 x better angular resolution– 10 x lower dark current supports R ~ 1000 at high redshift

Ground: – JWST and GSMT are complementary where

capabilities overlap: – HST: Keck diameter ratio ~ JWST:GSMT – Background ~1,000,000 x larger on ground

at 5 microns

Real data: Spitzer 25 hours

Simulated: JWST 3 hours

6

JWST Team and ResponsibilitiesJWST Team and Responsibilities

Integrated Science Instrument Module (ISIM) – GSFC•Structure – GSFC/ATK•MIRI- JPL & ESA/European Consortium•NIRSpec- ESA/Astrium•NIRCam – U of Arizona/LMATC•FGS/TFI – CSA/COM DEV

ISIM Radiators- NGAS/Ball

Optical Telescope Element (OTE) – NGAS/Ball

Backplane Structure – NGAS/ATK

Deployment Tower - NGAS

Launch Vehicle & Adapter- ESA/Arianespace

Spacecraft - NGAS

MIRI Cryocooler – JPL/NGASInstrument C&DH - GSFC

Sunshield – NGASMembrane – NGAS/SRS

ISIM Electronics Compartment (IEC)- GSFC

Overall Observatory - NGAS

7

JWST System ArchitectureJWST System Architecture

Deep Space Network

Space Telescope Science InstituteScience & Operations Center

GSFC Flight Dynamics Facility

L2 Transfer Trajectory

L2 Point

L2 Lissajous Orbit

Ka-Band Science Link (Selectable 7, 14, 28 Mbps)S-Band Tlm Link (Selectable 0.2 - 40 Kbps)S-Band Cmd (Selectable 0.25, 2 and 16 Kbps)S-Band Ranging

Ariane 5 UpperStage Injects JWSTInto Direct Transfer

Trajectory

Ariane 5Launch System

NASA Integrated Services Network

Ariane PPF S5

CommunicationsServices for Launch(TDRS, ESA)

S-Band Tlm Link ( 2Kbps)S-Band Cmd Link (0.25 Kbps)S-Band Ranging

Observatory – Upper StageSeparation

S-Band Tlm Link ( 2Kbps)

Observatory Deployments-Solar Array-High Gain/ Medium Antennas-Sunshield-Optical Telescope Element

Communications Coverage ProvidedFor all Critical Events

8

Ariane 5 Launch VehicleAriane 5 Launch Vehicle JWST is designed for launch on an

Ariane V launch vehicle with a 5 m diameter fairing

Launch from Kourou Launch Center (French Guiana) with direct transfer to L2 point

Payload launched at ambient temperature with on orbit cooling to 50 K via passive thermal radiators

JWST payload: 6330 kg

Ariane 5 ECA

French Guiana

JWST Master ScheduleJWST Master Schedule2008 2009 2010 2011 2012 2013 2014 2015

FY08 FY09 FY10 FY11 FY12 FY13 FY14 FY15

Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2

11/30/09

JWST Master Schedule

Major Mission Milestones

Integration & Test

OTE

JSC Activity

SSDIF Activity

Pathfinder Structure (PF) Flight Structure (PMBSS)

Primary Mirrors (PMSA)

Flight Sunshield

Spacecraft (SC)

SC & IES Simulators

Observatory FSW/EMTB

Build 1 & 2/V&V

ISIM

Integration & Test

NIRSpec

MIRI

NIRCam

FGS

Cooling System

Ground Segment

3

PDR/NAR

7

KDP-II

4

CDR

12

M O R

1

TRR

5

SIR

8

KDP-III

4

PSR

5

FRRKDP-IV

6

LRD

12

O RR

9

IDR Fab

12

ThrmlRev

2

Integ

9

TRR

1

Tes t

2

Depreps

SC PanelInteg 1

5 8

SC PanelInteg 2

9

CCA, Prop Integ

10

SCE Integ

11

CST 1, M oda l

12

Subsys Deploy

1

Vib

2

TV

4

Subsys Deploy

5 6

CST 2 / EM C

7

Acoustic, Vib,

Shock

9

Deployments, CST 3 &

M ass Props

1 5 5

Ship Prep

6

Launch Prep

10

O TE CDR

8

JSC CH AReady

5

O TE/ISIMInteg Review

1

ITT G SESRR

6

G SEPDA

3

G SECDA

7

InstallG SE

9

Bake- O ut

10

Cryo Prf

Load

11 12

Install PF

w o AO S

2

Chamber Comm

2

Install PF w / AO S

4

PF Cryo Tes t

9 10

Ambient

2

O TE/Flt ISIM Cryo

1

G SESRR

6

G SEPDA

3

G SECDA

10

SESReady

SSDIF Ready

1

G SE Ins tallation

8

PF O ptic s Integ

11

Flt O ptics Integ

3

Final M irror

5

Flt ISIMInteg

7 9

Acous, Vibe CoCi Test

9

CDA 3

PF Struts

7

PF PM BSS

10

Cry Cyc TRR

1

Cryo Cycle 3

PF SM SS

4

Final Testing 4

PF Struct Integ

6

7 10

O TE Struct Assy

11

M M S ISIM Tes t

12

Start FltCryo Test #1

9

Start Flt Cryo Test #2

1

Start FltCryo Test #3

1

PF PM SA

4

#1

5

#2

6

#3,

7

#4

7

#5

8

#6 (Last PM Batch)

2

SS PDR

12

Flt M embrane M at'l Fab Cpt 2

M M S PDA

6

NeXolve 1 /3 T/V M embrane Delivery

10

TMStart

11

NeXolveCDR

12

Q ual Test Comple te1

SS CDR

7

UPS M RR

12

Flt M embrane Fab

8

Del L-1

9

Del L-2

10

Del L-3

12

Del L-4

1

Del L-5

3 9

EPF-2 Tes ts

5

Tooling5

IVA Set Up & Testing

1

Fit Checks

8

M aunfa cturing & Test10

1

Integ & Test

6

Ship to I&T

12

StructurePDA 7

PDR

8

Structure CDA 5

CDR

9

Test

12

Prop I&TSC Structure

Del

9

Ship Propulsion Sys tem to I&T

1

SC Sim for ICDH LabSC Sim for ISIM SDL

5

ETU ISIM I&TType 1A

9

IES SDL

10

Flt ISIM (Type 2A)

3

IESEM TB

3

IES O TB

2

Bld 1 PDR

6

Bld 1 CDR/ Bld 2 PDR

6

Bld 2 CDR

8

Bld 1 TRR

9

Bld 2.1 TRR

7

Bld 2.2 TRR

2

FSW Del to SC

9

FSW Del to O bs

4

B 1.3

9

B 1 Update

12

B1 Verif 9

B 1 Val Start

11

B 2.1 Verif 3

B 1 Val Cpt

10

B 2.2 Verif 10

B 2.1 Val Cpt

3

B 2.2 Val Cpt

4

O bs Verif 9

O bs Val

3

ISIM CDR

7

Rec Structurefrom ATK

Structure Ac ceptance Tes ting

7

Start I&T

9

O SIM

4

PER

5

StartCryo 1

1

StartCryo 2

6

Reserve

8

Del Flt ISIMto O TE

10

CDR

2

ETU De l

1

Flt Del

1

STM Del

1

Flt Del

2

ETU De l

3

Flt Del

3

TFI/Systems CDR

2

ETU De l

1

Flt Del

2

PDR

6

CDR

6

Fit CheckCHA

10

FlightCHA

1

EM CTA

5

CCA M ock-up

6

CCES/ CELS

7

Flight CTA

5

FlightCCA/CCE

5

FlightCCA/CCE

(spare)

9

CCTS B2.1

5

CCTS B2.2

9

S&O CPDR

10

CCTS B2.3

6

S&O C Rel 0.0

10

CCTS B 2.4

10

S&O C CDR

12

S&O C Rel 1.0

7

S&O C Rel 2.0

12

O TB Del

1

S&O C Rel 2.x

12

Start " on ca ll" Support

Sunshield (SS)

Evolutionary Pathfinder (EPF)

M ate O TE / ISIM /IEC to S/C

Membranes

4

M gm'tReserve

SC Bus Fab & Assembly

1/3 Scale Sunshield

Rev-I DRAFT

3

Slack

3

Slack

10

General: All observatory components have successfully completed their preliminary design reviews ISIM CDR held in March

All science instruments have successfully completed their critical design reviews Optical Telescope Element (OTE) CDR held last October Sunshield CDR scheduled for January 2010 Launch Readiness Date is June 2014 and the Mission Critical Design Review is in April 2010

Observatory: Completed the spacecraft bus PDR Completed the JWST full scale core test Completed the 1/3 Scale Sunshield testing

Optical Telescope Element: Backplane:

Bonding of flight and pathfinder OTE Primary Mirror Backplane Support Structures (PMBSS) continues

Center section of the pathfinder completed bonding in December Completed the Flight Backplane CDR

Project StatusProject Status

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Full Scale Core Test HardwareFull Scale Core Test Hardware

Core Thermal TestFocus Area

Optical Telescope Element

Sun ShieldSpacecraft Bus

Decagon Test Membrane

SS Support Frame

Top Weldment

Base Weldment

Bus Simulator

IEC

PTR Radiators

Lift Sling

Backplane Support Frame (BSF)

Membrane Tensioning System

Center Backplane

Stray Light Bib

Diagonal Shields

Deep Space Edge Radiator (DSER) Panels

Cable Radiator

Counterbalance Weights

FLIGHT Observatory

CORE TEST thermal facsimile

Core Test Article Testing is CompleteCore Test Article Testing is Complete

Core Test integration complete– OTE/SC assemblies mated– GSFC radiometers received and installed– He shroud installed, leak checks completed– MLI closeouts complete– Instrumentation installation and checkout complete

Cool down started on April 17th

Competed testing on May 26th Data analysis is complete

Core Test Article

Installation on Chamber Lid

He Shroud Installation

12

1/3 Scale Sunshield completed testing in December1/3 Scale Sunshield completed testing in December

Telescope Pathfinder and Flight structure at ATKTelescope Pathfinder and Flight structure at ATK

14

Primary Mirror Segment StatusPrimary Mirror Segment Status

A2, A4 and B3 during Integration for Cryo Test #2 in the XRCF, August,

2009

18 Flight PMSAs (6 A, 6 B, and 6 C segments) are at various stages of completion

– All segments have completed the surface grinding processes at Tinsley

– All but 5 segments have completed the rough polish process at Tinsley

– 16 flight mirrors have been shipped to Ball from Tinsley for configuration changes, assembly integration and testing

– 4 flight mirrors have been at the XRCF for Cryo Deformation Testing

– Next Cryo Deformation test with 5 flight and the completely polished ETU mirrors is scheduled to start in early January

– A1 is the first flight mirror in Cryo Null Polishing, now at Tinsley

Mirror Processing at TinsleyMirror Processing at Tinsley

EDU preparing for final polish runEDU preparing for final polish run EDU in Optical TestEDU in Optical Test

C4 in Flipping FixtureC4 in Flipping Fixture TM in Optical TestTM in Optical Test

A2, A4 and C3 PMSA’s at the MSFC XRCFA2, A4 and C3 PMSA’s at the MSFC XRCF

EDU PMSA Completed Final Polishing at Tinsley!EDU PMSA Completed Final Polishing at Tinsley!

EDU PMSA in it’s Shipping ContainerEDU PMSA in it’s Shipping Container

Status of Secondary, Tertiary and Fine Steering MirrorsStatus of Secondary, Tertiary and Fine Steering Mirrors

Secondary Mirrors– EDU SM is in final testing at BATC and is scheduled for delivery as a pathfinder in March

2010– Flight SM is in initial rough polishing at Tinsley, pre-cryo testing

Tertiary Mirror– Flight TM has completed cryo and integration deformation testing at BATC– Flight TM has begun Cryo Null Polishing at Tinsley

Fine Steering Mirror– Flight FSM has successfully completed cryo deformation testing at BATC; the null figure

polishing target map is being developed– Cryo Null Polishing of the Flight FSM is scheduled to begin next at Tinsley

EDU SM

TM

FSM

Secondary Mirror (SM) in cryo testing at BallSecondary Mirror (SM) in cryo testing at Ball

Mirror Status at TinsleyMirror Status at Tinsley

As of 11/30/09

TM1

EDU

SM1

Pathfinder EDU Flight Flight

C7

LEGEND

Not at L-3 SSG-Tinsley

Even Slice

Figure Grind

Smooth Out Grind

Rough / Smooth Out Polish Interleave

Stability / Final Prep

Shipped to BATC

Cryo Null Figure

Final Optical Test

Delivered

– – – – – Pathfinder

C5

B8

C6

B3

C1

C2

A1

A6

A5

A2

C4

A3

A4

C3

B5

B6

B7

SM2

B2

FSM

Mirror coating will start at QCI this yearMirror coating will start at QCI this year

JWST Dedicated Coating Chamber Chamber and coating qualification on

schedule to support flight coating– FSM and TMA will be coated in Feb 2010– PMSA EDU will be coated in Apr 2010

GSE Mirror Support in Final Steps of Integration and TestGSE Mirror Support in Final Steps of Integration and Test

Coating Chamber Final IntegrationCoating Chamber Final Integration

Coating Chamber InstalledCoating Chamber Installed

Sunshield IVA Deployment TestingSunshield IVA Deployment Testing

Kapton Spring Under Load

Stored Sunshield IVA with the OTE SimulatorStored Sunshield IVA with the OTE Simulator

26

Ground System: Thirty-two Common Command and Telemetry Systems (CCTSs) have been deployed

around the world to support ISIM, science instrument and spacecraft flight software development and integration and test activities

The JWST Certification Facility has been established to test and certify operations products (command procedures, onboard scripts, telemetry monitors, etc) for use before testing against engineering models and flight hardware

The Ka band upgrades required to support JWST L&EO and normal operations have been completed at the DSN Canberra and Goldstone sites; the Madrid site has been upgraded and is currently undergoing testing

Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)

27

Ground Segment: Science instrument teams around the world using their SITS and SIDU systems

Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)

28

Ground Segment: Observatory I&T Control Room at NGAS

Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)

29

Ground Segment: JWST Certification Facility

Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)

30

Integrated Science Instrument Module (ISIM)– Successfully completed ISIM Level CDR in March– ISIM structure delivered to the GSFC in August– ISIM Command and Data Handling (IC&DH) unit and Remote Services Unit (IRSU) making

good progress Instruments:

– MIRI- MIRI Verification Model (VM) completed it’s second cryo test- Selected flight and spare detectors and built into Focal Plane Module’s (FPM’s)- Instrument shield (for cryo cooler) concept baselined- Flight Model integration underway

– NIRSpec- Selection of flight detectors agreed to by NASA & ESA- Development Model (DM) cryo testing is complete; Successful Pre Ship Review held- Flight Microshutter Array and Control Electronics in final testing- Flight Model (FM) integration underway

– NIRCam- Selected flight detectors for NIRCam- Build up of the NIRCam Engineering Test Unit (ETU) well underway- Completed the Triplet bonded mount CDR and started bonding the brass board lenses

– FGS- FGS flight detectors (including the spare) have been selected- ETU integration is complete; environmental testing is underway- Flight Model integration underway

Program Status and Recent Progress (Continued)Program Status and Recent Progress (Continued)

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JWST Instrument Engineering, Verification and JWST Instrument Engineering, Verification and Development ModelsDevelopment Models

FGS EM integration is complete MIRI VM testing is complete!

NIRSpec DM testing is Complete! NIRCam ETU undergoing I&T

NIRSpec Flight Model started IntegrationNIRSpec Flight Model started Integration

NIRCam ZnSe & BaFl Brass Board Optics NIRCam ZnSe & BaFl Brass Board Optics successfully bonded in new mounts!successfully bonded in new mounts!

Flight ISIM Structure in the SSDIFFlight ISIM Structure in the SSDIF

ISIM Kinematic Mount InstallationISIM Kinematic Mount Installation

ISIM & OSIM Hardware in the SSDIFISIM & OSIM Hardware in the SSDIF

Support and Mobility for OSIM registration and Integration (SAMORAI). OSIM optical

bench is mounted in SAMORAI

ISIM Structure

HST VEST Equipment

Foreground: theodolites and metrology equipmentCenter-Left: OSIM optical components (wrapped)Background: ISIM Structure

37

SES Shroud in GSFC Bldg 10 for ISIM TestingSES Shroud in GSFC Bldg 10 for ISIM Testing

Fabreeka Isolators

GIS

UG Flexures

He Shroud

SES

UG

ITP

Cryoset Test Configuration(some minor details not correct)

ITP

He Shroud

Fabreeka Isolators

MGSE Installed in SES for ISIM Structure Cryotesting MGSE Installed in SES for ISIM Structure Cryotesting

Major near term reviews, tests and deliveries:

- Sunshield CDR scheduled for January 2010

- Start ISIM Structure cryoset test January 2010

- MIRI Structural Thermal Model delivery to GSFC in February 2010

- NIRSpec Engineering Model delivery to GSFC in February 2010

- FGS Engineering Model delivery to GSFC in March 2010

- Flight NIRSpec Micro Shutter Subsystem delivery to ESA in March 2010

- MIRI flight Focal Plane System (FPS) delivery to RAL in March 2010

- NIRSpec flight Focal Plane System (FPS) delivery to ESA in March 2010

- NIRCam Engineering Model delivery to GSFC in April 2010

- Mission Critical Design Review in April 2010

- IRSU Flight Model delivery in May 2010

- ISIM Flight Structure delivery to I&T in August 2010

- ISIM Electronics Compartment Flight Model delivery in August 2010

Major Near Term MilestonesMajor Near Term Milestones

40

Successfully passed our Confirmation Review the Summer of 2008

Launch Readiness Date is June 2014

Engineering or Verification Models for the science instruments are complete or completing integration and test activities

They will be delivered to the GSFC over the next several months Integration of the flight instruments is underway

Continuing to make good progress on critical path items

Getting ready for our Mission CDR in April

Project SummaryProject Summary

ICDH ETU (Region 3)

Flight Structure

SM Hexapod

NS FPA Heatstrap

IEC Shell in Fabrication

Kinematic Mounts

NS Flight Integration

ISIM Under ConstructionISIM Under ConstructionISIM Under ConstructionISIM Under Construction

IRSU FLT Chassis

MIRI VM

FGS ETU

IEC Prototype Baffles

NIRCam ETU Bench

Primary Mirror Segment

Secondary Mirror SegmentMembrane mgmt

Mid-boom Test

ISIM Flight Bench

PM Flight Backplane

SMSS Pathfinder Strut

SM Hexapod

IC&DH unit ETU

Tertiary Mirror

Fine Steering Mirror

Pathfinder membrane

JWST Under ConstructionJWST Under ConstructionJWST Under ConstructionJWST Under Construction

42