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Proceedings Paper

A stainless-steel mandrel for slumping glass x-ray mirrors
Author(s): Mikhail V. Gubarev; Stephen L. O'Dell; William D. Jones; Thomas J. Kester; Charles W. Griffith; William W. Zhang; Timo T. Saha; Kai-Wing Chan
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Paper Abstract

We have fabricated a precision full-cylinder stainless-steel mandrel at NASA Marshall Space Flight Center. The mandrel is figured for a 30-cm-diameter primary (paraboloid) mirror of an 840-cm focal-length Wolter-1 telescope. We have developed this mandrel for experiments in slumping-thermal forming at about 600°C-of glass mirror segments at NASA Goddard Space Flight Center, in support of NASA's participation in the International X-ray Observatory (IXO). Precision turning of stainless-steel mandrels may offer a low-cost alternative to conventional figuring of fusedsilica or other glassy forming mandrels. We report on the fabrication, metrology, and performance of this first mandrel; then we discuss plans and goals for stainless-steel mandrel technology.

Paper Details

Date Published: 31 August 2009
PDF: 12 pages
Proc. SPIE 7437, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV, 74370Z (31 August 2009); doi: 10.1117/12.831260
Show Author Affiliations
Mikhail V. Gubarev, NASA Marshall Space Flight Ctr. (United States)
Stephen L. O'Dell, NASA Marshall Space Flight Ctr. (United States)
William D. Jones, NASA Marshall Space Flight Ctr. (United States)
Thomas J. Kester, NASA Marshall Space Flight Ctr. (United States)
Charles W. Griffith, NASA Marshall Space Flight Ctr. (United States)
William W. Zhang, NASA Goddard Space Flight Ctr. (United States)
Timo T. Saha, NASA Goddard Space Flight Ctr. (United States)
Kai-Wing Chan, Univ. of Maryland, Baltimore (United States)


Published in SPIE Proceedings Vol. 7437:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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