GSFC X-ray Interferometry Testbed
The NASA Goddard Space Flight Center X-ray Interferomtry Testbed is a 600
meter long vacuum system dedicated toward technology development for NASA's
Black Hole Imager
vision mission under the Beyond
Einstein Roadmap. Black Hole Imager will have the capability to
resolve the event horizons of supermassive black holes in the X-ray bandpass
sometime after 2025. To achieve this goal, we will need to develop several
technologies including interferometry
at X-ray wavelengths. The GSFC X-ray Interferometry Testbed allowss
us to test these technologies. An X-ray Source is positioned at one
end of the 600 meter beamline. Optical components to the interferometer
are located 147 meters away from the source in a large vacuum chamber along
the beamline. The detector is located at the far end of the beamline.
The system is reconfigurable, so we can test other geometries as needed.
LocationThe GSFC X-ray Interferometry Testbed is located at the Goddard Geophysics and Astronomy Observatory (GGAO or Area 200). This is a relatively remote location free of much vibration that tends to affect our interferometry work. The figure below indicates the main campus as well as where the beamline is located.
Facility PicturesThe Source Building:
The Optics Building:
The view from the optics building toward the source:
The view from the optics toward the detector
Along the beamline toward the detector
Inside the Detector Building:
Near Term Goals
Fringes at the Iron K line (1.9 angstroms) by end of FY05.
Testing of Fresnel Lens at Copper K alpha by end of spring 05.
Beamline SafetyGSFC Form 23-28ID X-ray Source ID For Manson Source
GSFC Form 23-28ID X-ray Source ID for Moly Oxford Tube
GSFC Form 23-6ID: Source relocation Form
GSFC Form 23-6ID Source relocation special information
NASA GSFC MAXIM Home Page
Beamline Status Page