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Proceedings Paper

Continued development of a precision cryogenic dilatometer for the James Webb Space Telescope
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Paper Abstract

As part of the James Webb Space Telescope (JWST) materials working group, a novel cryogenic dilatometer was designed and built at NASA Jet Propulsion Laboratory to help address stringent coefficient of thermal expansion (CTE) knowledge requirements. Previously reported results and error analysis have estimated a CTE measurement accuracy for ULE of 1.7 ppb/K with a 20K thermal load and 0.1 ppb/K with a 280K thermal load. Presented here is a further discussion of the cryogenic dilatometer system and a description of recent work including system modifications and investigations.

Paper Details

Date Published: 30 September 2004
PDF: 9 pages
Proc. SPIE 5528, Space Systems Engineering and Optical Alignment Mechanisms, (30 September 2004); doi: 10.1117/12.561342
Show Author Affiliations
Paul B. Karlmann, Jet Propulsion Lab. (United States)
Matthew J. Dudik, Jet Propulsion Lab. (United States)
Peter G. Halverson, Jet Propulsion Lab. (United States)
Marie B. Levine, Jet Propulsion Lab. (United States)
Martin R. Marcin, Jet Propulsion Lab. (United States)
Robert D. Peters, Jet Propulsion Lab. (United States)
Stuart B. Shaklan, Jet Propulsion Lab. (United States)
David Van Buren, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 5528:
Space Systems Engineering and Optical Alignment Mechanisms
Lee D. Peterson; Robert C. Guyer, Editor(s)

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