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Proceedings Paper

Independent testing of JWST detector prototypes
Author(s): Donald Frank Figer; Bernard J. Rauscher; Michael W. Regan; Ernie Morse; Jesus Balleza; Louis Bergeron; H. S. Stockman
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Paper Abstract

The Independent Detector Testing Laboratory (IDTL) is jointly operated by the Space Telescope Science Institute (STScI) and the Johns Hopkins University (JHU), and is assisting the James Webb Space Telescope (JWST) mission in choosing and operating the best near-infrared detectors. The JWST is the centerpiece of the NASA Office of Space Science theme, the Astronomical Search for Origins, and the highest priority astronomy project for the next decade, according to the National Academy of Science. JWST will need to have the sensitivity to see the first light in the Universe to determine how galaxies formed in the web of dark matter that existed when the Universe was in its infancy (z~10-20). To achieve this goal, the JWST Project must pursue an aggressive technology program and advance infrared detectors to performance levels beyond what is now possible. As part of this program, NASA has selected the IDTL to verify comparative performance between prototype JWST detectors developed by Rockwell Scientific (HgCdTe) and Raytheon (InSb). The IDTL is charged with obtaining an independent assessment of the ability of these two competing technologies to achieve the demanding specifications of the JWST program within the 0.6-5 μm bandpass and in an ultra-low background (<0.01 e-/s/pixel) environment. We describe results from the JWST Detector Characterization Project that is being performed in the IDTL. In this project, we are measuring first-order detector parameters, i.e. dark current, read noise, QE, intra-pixel sensitivity, linearity, as functions of temperature, well size, and operational mode.

Paper Details

Date Published: 12 January 2004
PDF: 32 pages
Proc. SPIE 5167, Focal Plane Arrays for Space Telescopes, (12 January 2004); doi: 10.1117/12.505787
Show Author Affiliations
Donald Frank Figer, Space Telescope Science Institute (United States)
Bernard J. Rauscher, NASA Goddard Space Flight Ctr. (United States)
Michael W. Regan, Space Telescope Science Institute (United States)
Ernie Morse, Space Telescope Science Institute (United States)
Jesus Balleza, Space Telescope Science Institute (United States)
Louis Bergeron, Space Telescope Science Institute (United States)
H. S. Stockman, Space Telescope Science Institute (United States)

Published in SPIE Proceedings Vol. 5167:
Focal Plane Arrays for Space Telescopes
Thomas J. Grycewicz; Craig R. McCreight, Editor(s)

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