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Multi-use Space Optics Test Facility X-ray Calibration/Cryogenic Test Facility

Multi-use Space Optics Test Facility X-ray Calibration/Cryogenic Test Facility Marshall Space Flight Center Jack C. Reily, Jeff Kegley, John Keidel, Richard Siler, Ernie Wright, David Jacobson, Scott Smith, Ron Eng, H. Philip Stahl. X-Ray/Cryogenic Facility.

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Multi-use Space Optics Test Facility X-ray Calibration/Cryogenic Test Facility

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  1. Multi-use Space Optics Test Facility X-ray Calibration/Cryogenic Test Facility Marshall Space Flight Center Jack C. Reily, Jeff Kegley, John Keidel, Richard Siler, Ernie Wright, David Jacobson, Scott Smith, Ron Eng, H. Philip Stahl

  2. X-Ray/Cryogenic Facility • XRCF at MSFC is an extremely clean, dynamically stable, high vacuum, cryogenic, optical test facility. • Constructed for $30M in 89-91 to calibrate x-ray mirrors/instruments. • Modified for $8M in 92-94 to test Chandra (AXAF) Observatory. • X-Ray Source connected to Chamber via 0.518 km evaculated tube. Test equipment includes monochromaters and detectors (0.1 to 10.0 KEV). • Modified for $2M in 98-99 to cyro-test NGST mirror segments. • Access via Insterstate, C5 Capable Restrone Airfield, or NASA Barge Dock on Tennessee River

  3. Vacuum Chamber • Vacuum Chamber • 7.3 x 22.8 m Polished Stainless Steel 10-7 Torr Vacuum Chamber with Full 155 to 355K Thermal Shroud. • 2.6 x 3.3 x 10 m 20K He Shroud. • Vibration Isolated via Seismic Mass (LOS Jitter 2 - 4 mrad) • 5DOF Remote Controlled Test Stand • Separate Vibration Isolated Center of Curvature Test Column

  4. Class 1K Clean Room • Vacuum Chamber is connected to a 555 sq m Class 1K Vertical Laminar Flow Clean Room via a rail system. • Facility also has a 185 sq m Class 10K area for hardware unpacking and assembly. • Remote Control/Data Acquisition, Power Backup, Optical & Machine Shops, 24 hr Security, etc.

  5. Multi-Disciplined Personnel High-Flexible Multi-Disciplined Personnel 24/7 Operation 12 Hour Shifts, 2-8 per Shift, Multiple Crews, On-Site and On-Call Flight/Program Critical Hardware Handling & Assembly, Contamination Control, Test Procedures

  6. Thermal Control System • 20K Thermal Control System • Closed loop He cryogenic refrigeration system controllable to 20K • Overall dimensions: 3.3m x 2.6m x 10m • Thermal control shroud is mounted to rails inside vacuum chamber • Seismically isolated from optical train. • 900w capacity at 20K • Free He molecular conductivity effect utilized to augment mirror cooling

  7. Remote 5 DOF Mount 5 Degree of Freedom Bench Rough alignment of test optic within instrument chamber +/- 30 arcmin pitch and yaw. X,Y,Z range = +/- 25 mm Accuracy = +/- 5 arcsec Heater subsystem maintains safe mechanical operating temps

  8. Wavefront Sensor

  9. Radius of Curvature Instrumentation • Available Test Equipment • AOA Wave Scope with 150 x 150 lenslet • Phase4 PhaseCam 512x512 Interferometer • ADE IPI 1000x1000 Interferometer • Point Diffraction Interferometer • CCD camera for Point Spread Function • 5 DoF Instrument Mount • 3 axis remote translation, • 2 axis manual rotational. • University of Alabama-Huntsville Center for Applied Optics on Support Contract.

  10. ROC Instrumentation Development • Vibration Isolated Interferometer Support Column • Provides seismic isolation from external inputs • Lead filled column enhances stability

  11. Summary • The MSFC XRCF is a unique Optical Metrology Facility: • High Vacuum 10-7 Torr • Thermal Range 20 K to 355 K • Extremely Clean Class 1K • Dynamically Stable 2 - 4 mrad • Large Volume 2.6 x 3.3 x 10 m He Shroud • 6.1 x 18.3 m LN2 Shroud • Facility has variety of Optical Metrology Instruments and all Mounts are Remote Controlled. • Facility currently under constant use in support of NGST and various X-Ray programs. • Key Asset is Highly-Skilled Multi-Disciplinary Team Experience in Performing Routine X-Ray and Cryo-Tests.

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