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Proceedings Paper

The use of the Molecular Adsorber Coating technology to mitigate vacuum chamber contamination during Pathfinder testing for the James Webb Space Telescope
Author(s): Nithin S. Abraham; Mark M. Hasegawa; Eve M. Wooldridge; Kelly A. Henderson-Nelson
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Paper Abstract

As a coating made of highly porous zeolite materials, the Molecular Adsorber Coating (MAC) was developed to capture outgassed molecular contaminants, such as hydrocarbons and silicones. For spaceflight applications, the adsorptive capabilities of the coating can alleviate on-orbit outgassing concerns on or near sensitive surfaces and instruments within the spacecraft. Similarly, this sprayable paint technology has proven to be significantly beneficial for ground based space applications, in particular, for vacuum chamber environments. This paper describes the recent use of the MAC technology during Pathfinder testing of the Optical Ground Support Equipment (OGSE) for the James Webb Space Telescope (JWST) at NASA Johnson Space Center (JSC). The coating was used as a mitigation tool to entrap persistent outgassed contaminants, specifically silicone based diffusion pump oil, from within JSC’s cryogenic optical vacuum chamber test facility called Chamber A. This paper summarizes the sample fabrication, installation, laboratory testing, post-test chemical analysis results, and future plans for the MAC technology, which was effectively used to protect the JWST test equipment from vacuum chamber contamination.

Paper Details

Date Published: 27 September 2016
PDF: 19 pages
Proc. SPIE 9952, Systems Contamination: Prediction, Control, and Performance 2016, 99520C (27 September 2016); doi: 10.1117/12.2236704
Show Author Affiliations
Nithin S. Abraham, NASA Goddard Space Flight Ctr. (United States)
Mark M. Hasegawa, NASA Goddard Space Flight Ctr. (United States)
Eve M. Wooldridge, NASA Goddard Space Flight Ctr. (United States)
Kelly A. Henderson-Nelson, Stinger Ghaffarian Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 9952:
Systems Contamination: Prediction, Control, and Performance 2016
Joanne Egges; Carlos E. Soares; Eve M. Wooldridge, Editor(s)

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