Selection of I-220H beryllium for NIRCam optical bench

Details Selection of I-220H beryllium for NIRCam optical bench Selection of I-220H beryllium for NIRCam optical bench

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5868..274e&link_type=abstract

Optical Materials and Structures Technologies II. Edited by Goodman, William A. Proceedings of the SPIE, Volume 5868, pp. 274

Physics

Scientific paper

The Near Infrared Camera (NIRCam) for NASA's James Webb Space Telescope (JWST) is one of the four science instruments to be installed into the Integrated Science Instrument Module (ISIM) on JWST. I-220H beryllium was chosen as the optical bench material for NIRCam based on its high specific stiffness, relatively high thermal conductivity, low CTE at cryogenic temperatures, and overall thermal stability at cryogenic temperatures. Beryllium has cryogenic heritage, but development of a structural bonded joint that could survive cryogenic temperatures was required. This paper will describe the trade studies performed in which bonded, I-220H beryllium was selected.

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