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Status of the James Webb Space Telescope Status of the James Webb Space Telescope

Status of the James Webb Space Telescope - PowerPoint Presentation

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Status of the James Webb Space Telescope - PPT Presentation

Integrated Science Instrument Module Ray Lundquist NASA GSFC Collaborators Michael P Drury Jamie L Dunn Stuart D Glazer Matthew A Greenhouse Ed Greville Gregory Henegar ID: 508803

test isim spie status isim test status spie juli 2012 8442 instrument thermal delivered iec radiator testing harness nirs

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Presentation Transcript

Slide1

Status of the James Webb Space Telescope Integrated Science Instrument Module

Ray Lundquist, NASA GSFCSlide2

CollaboratorsMichael

P.

Drury

Jamie L. Dunn Stuart D. Glazer Matthew A. GreenhouseEd GrevilleGregory HenegarEric L. JohnsonJohn C. McCloskeyRaymond G. Ohl Pam Davila Robert A. RashfordGurnie C. HobbsScott LambrosDoug McGuffeyMark F. VoytonVicki Balzano

Juli 6, 2012

2

8442-92 SPIE ISIM StatusSlide3

JWST Full Scale Model at the Baltimore Inner Harbor

Juli 6, 2012

3

8442-92 SPIE ISIM StatusSlide4

ISIM SubsystemsThe Integrated Science Instrument Module contains

Four Science Instruments

NIRCam

; NIRSpec; MIRI; and FGS/NIRISSAnd the supporting InfrastructurePrimary StructureISIM Electronics Compartment (IEC)Harness Radiator (HR)ISIM Command and Data Handling (ICDH)ISIM Remote Services Unit (IRSU)Thermal Control System (TCS)ISIM Flight Software (IFSW)On-Board Script SystemAnd Electrical Harnessing

Purge Lines and GSE Panel

ISIM Structure

Thermal Straps

NIRSpec

IEC

Radiator Baffle

Electrical

Harness and Harness Radiator

Kinematic Mount

MIRI

NIRCam

Harness Radiator

Juli 6, 2012

4

8442-92 SPIE ISIM StatusSlide5

Instruments are being tested and delivered

NIRCam

starting vacuum testing

FGS completing vacuum testing and ready for deliveryMIRI Completed testing and delivered to Integration and TestNIRSpec fully tested, but re-build is neededJuli 6, 201258442-92 SPIE ISIM StatusSlide6

Instrument Status

Instrument

Current Testing

Upcoming TestDelivery DateNIRCamThermal/Cryo VacSecond thermal test and vibration at GSFCNovember 12NIRSpecBench level assemblyFull test programApril 13MIRIPost ship functionalISIM test programDelivered (May 12)FGS/NIRISSCompleteISIM test programJuly 12

All NIR instrument detectors have a slow degradation process, called “hot pixels” which impacts sensitivity. Replacement detectors are being procured and will be replaced prior to the final ISIM system level test

Juli 6, 2012

6

8442-92 SPIE ISIM StatusSlide7

Structure

Structure delivered to I&T in 2011 after completing proof testing and cryo soak/cycle to survival temperatures

Fit check of MIRI STM and FGS ETU

Juli 6, 201278442-92 SPIE ISIM StatusSlide8

IEC Progress

IEC ready for acoustics test

Preparation for IEC thermal balance test

Thermal balance and moisture capture test of the IEC ventJuli 6, 201288442-92 SPIE ISIM StatusSlide9

Thermal Control System

NIRS-1A

NIRS-1B

NIRS-2AssemblyNIRS-3AssemblyNIRS-4AssemblyNIRS-5Assembly

NIRSpec

OA Strap

- Example

Update to heat strap routing following the Return-to-Green effort

13 of 30 heat straps systems have been delivered to ISIM

Juli 6, 2012

9

8442-92 SPIE ISIM StatusSlide10

Electronics

ISIM remote services unit (IRSU) has been delivered and are undergoing integration verification testing

Both ISIM command data handling (ICDH) units are delivered. They have completed integration testing and are ready to support ISIM integration and test

Juli 6, 2012108442-92 SPIE ISIM StatusSlide11

Harnesses and Harness Radiator

Electrical harnessing

All detector interface harnesses complete and delivered

Flight or test versions of all instrument interface cables have been completed. Final flight builds are continuing.

Aluminum Radiator Panels

Two-layer Aluminum meteoroid shields; outer layer is radiating surface

IEC (hot)

Sis – cold side

Meteoroid shield removed to show harness routing/clamps

No assembly picture yet

All piece parts received and assembly has begun

Juli 6, 2012

11

8442-92 SPIE ISIM StatusSlide12

SoftwareISIM Flight Software

Core software build 12.6 is complete and tested

Initial version of all Science Instrument software applications have been successfully integrated with the Core

Updated versions of instrument software expected with instrument delivery Modification of detector read-out schemes under investigation to reduce/improve system noiseJuli 6, 2012128442-92 SPIE ISIM StatusSlide13

Test Systems

Optical simulator (OSIM) being installed in the test chamber

Juli 6, 2012

138442-92 SPIE ISIM StatusSlide14

Test Systems

ISIM level full system test configuration

Juli 6, 2012

148442-92 SPIE ISIM StatusSlide15

SummaryISIM subsystem development is progressing wellFirst cryo-vacuum test planned for March 13, without

NIRSpec

. Two cryo-thermal tests planned with

NIRSpecNIR detector replacement plans are being developed Test equipment, facilities, and plans are in place for a successful ISIM test programJuli 6, 2012158442-92 SPIE ISIM Status