Testing and First Light for the Pop-up Bolometric Detectors (PUDs) for the High Resoultion Airborne Wideband Camera (HAWC) on SOFIA

Details Testing and First Light for the Pop-up Bolometric Detectors (PUDs) for the High Resoultion Airborne Wideband Camera (HAWC) on SOFIA Testing and First Light for the Pop-up Bolometric Detectors (PUDs) for the High Resoultion Airborne Wideband Camera (HAWC) on SOFIA

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.1515f&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #15.15; Bulletin of the American Astronomical Society, Vol. 32, p.1430

Astronomy and Astrophysics

Astronomy

Scientific paper

The HAWC instrument on SOFIA is diffraction limited in four bands between 50-220μm , with background limited sensitivity. Its purpose is to provide sensitive and reliable facility-imaging capabilities for SOFIA during its first operational years. It is the first flight instrument to use a state of the art bolometric 12x32 pixel array of ion implanted silicon PUDs, a closed-packed 2D array with >95% filling factor. It will be cooled to ~0.2K, using an Adiabatic Demagnetization Refrigerator (ADR). Here we report on detector characteristics: Measured I/V curves for different temperatures are completely consistent with a four parameter bolometer model. The measured detector noise contribution to the measured noise is only ~1-2% of the sky background noise. In September, 2000 a prototype instrument operating at λ =350μm using a single linear array of detectors was successfully deployed, and saw first light on the Caltech Submillimeter Observatory (CSO) on Mauna Kea.

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