Packaging for SNAP CCDs

Details Packaging for SNAP CCDs Packaging for SNAP CCDs

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.9814b&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #98.14; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

The Supernova Acceleration Probe (SNAP) mission proposes to use 36 charged coupled devices (CCDs) for the optical imaging. Each device is now envisioned to have 3512 x 3512 pixels 10.5 microns square each, with each CCD being approximately 40mm x 40mm x 200 um in size. The CCDs will have to be packaged to be suitable for mounting on the SNAP Silicon Carbide focal plane. The packages will have to be four side buttable and be stable over a temperature range of +50 degrees C to -150 degrees C, maintaining a flatness and thickness tolerance of 10 microns or less over this temperature range. The packages will be mounted on silicon carbide pedestals to match the coefficient of thermal expansion of the pedestals to both the silicon CCDs and the silicon carbide focal plane. The current design and progress on prototype packages will be described.

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