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Proceedings Paper

A high-speed event-driven active pixel sensor readout for photon-counting microchannel plate detectors
Author(s): Randy A. Kimble; Bedabrata Pain; Monico Ortiz; Julie B. Heynssens; Timothy J. Norton; J. Patrick Haas
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Paper Abstract

We describe a novel readout system for photon-counting microchannel plate detectors, based on a custom-designed event-driven CMOS Active Pixel Sensor (APS). The event-driven APS device is fiber-optically coupled to the microchannel plate intensifier in a configuration analogous to that employed in intensified CCDs (ICCDs). APS technology permits the incorporation of comparator circuitry within each pixel. When coupled with suitable CMOS logic outside the array area, the comparators can be used to trigger the readout of small sub-array windows only when and where intensified photon events have been detected. The event-driven APS readout thus completely eliminates the local dynamic range limitation of ICCDs, while achieving a high global count rate capability and delivering high (MCP-limited) spatial resolution (through sub-pixel centroiding of the event splashes, performed off-chip). We elaborate on this concept and the design of the event-driven APS below.

Paper Details

Date Published: 24 February 2003
PDF: 12 pages
Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); doi: 10.1117/12.459826
Show Author Affiliations
Randy A. Kimble, NASA Goddard Space Flight Ctr. (United States)
Bedabrata Pain, Jet Propulsion Lab. (United States)
Monico Ortiz, Jet Propulsion Lab. (United States)
Julie B. Heynssens, Jet Propulsion Lab. (United States)
Timothy J. Norton, NASA Goddard Space Flight Ctr. (United States)
J. Patrick Haas, Raytheon ITTS (United States)

Published in SPIE Proceedings Vol. 4854:
Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation
J. Chris Blades; Oswald H. W. Siegmund, Editor(s)

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