Photodetectors for OWL

Physics – Optics

Scientific paper

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Astronomical And Space-Research Instrumentation

Scientific paper

At its focal plane, an Orbiting Wide-Angle Light Collector (OWL) will require a highly segmented large area photon detector, able to detect ultraviolet light at the single photoelectron (few photon) level. Depending on the OWL field-of-view and collecting optics, the focal plane detector must have 6 to 20 square meters of contiguous active area segmented into between 0.4 and 1.7 million individual pixels. Each pixel must have a time response of ten nanoseconds to one microsecond, depending on the readout technique, and be able to resolve and record single photoelectrons. The technical requirements of the OWL focal plane detector and possible approaches to its realization will be presented and discussed. A baseline photodetector system is identified.

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