Random-Pixel-Address, Charge-Injection-Device Detector for Photon-Counting Space Astronomy

We propose to evaluate a random pixel address Charge Injection Device (CID) array for use as an innovative W photon counting detector. CIDs are wide dynamic range, non-blooming visible area array detectors which possess unique electro-optical features and flexible readout characteristics particularly suited to making asynchronous and precise spatial measurements. Using CID's random access and multiport readout capabilities, it should be possible to accomplish global readout of high resolution arrays at rates >102/sec and local subarrays at exceptionally high rates (>105/sec). The later rate would be adequate to perform photon counting. During Phase I, the maximum speed limit of an existing random access CID decoder electronics will be measured and correlated with computer simulations. Recommendations for the design and fabrication of a speed optimized CID structure will be provided. Phase II would complete prototype fabrication of the high resolution/speed optimized CID imager and imager test electronics.