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Proceedings Paper

Fast optical metrology of the hard x-ray optics for the High Energy Focusing Telescope (HEFT)
Author(s): Mario A. Jimenez-Garate; William W. Craig; Charles J. Hailey
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Paper Abstract

We describe a fast figure metrology system designed for the several thousand mirror quadrants in the High Energy Focusing Telescope (HEFT) balloon experiment. HEFT's multilayer coated hard x-ray optics will have approximately 1 arcminute HEW and operate at 20-80 keV. The optics are a conical approximation to the Wolter I configuration. Our automated system can measure the axial figure error, in- phase and out-of-phase roundness errors of a mirror quadrant, and output their HEW contribution to the x-ray telescope. An optical laser scans a conical mirror in two cylindrical coordinate axes. A 2D position sensitive diode measures the reflected beam to approximately 4 arcseconds. The conical mirror can have >= 3 cm radius. We show the figure measurements of HEFT's aluminum foil and thermally formed glass substrates.

Paper Details

Date Published: 19 November 1998
PDF: 12 pages
Proc. SPIE 3444, X-Ray Optics, Instruments, and Missions, (19 November 1998); doi: 10.1117/12.331284
Show Author Affiliations
Mario A. Jimenez-Garate, Columbia Univ. (United States)
William W. Craig, Columbia Univ. (United States)
Charles J. Hailey, Columbia Univ. (United States)


Published in SPIE Proceedings Vol. 3444:
X-Ray Optics, Instruments, and Missions
Richard B. Hoover; Arthur B. C. Walker, Editor(s)

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