Imaging By Time-Tagging Photons With The Multi-Anode Microchannel Array Detector System

J. G. Timothy; J. S. Morgan

doi:10.1117/12.968143

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13 October 1986 Imaging By Time-Tagging Photons With The Multi-Anode Microchannel Array Detector System

J. G. Timothy, J. S. Morgan

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Proceedings Volume 0627, Instrumentation in Astronomy VI; (1986) https://doi.org/10.1117/12.968143
Event: 1986 Astronomy Conferences, 1986, Tucson, United States

Abstract

We report on the capability and initial use of the MAMA detector in the time-tag mode. The detector hardware currently in use consists of a visible-light detector tube with a semi-transparent photocathode proximity-focused to a high-gain curved-channel MCP. The photoevents are detected by a (256 x 1024)-pixel coincidence-anode array with pixel dimensions of 25 x 25 microns 2 connected to charge-sensitive amplifiers and event-detection circuitry. In the time-tag mode, the detector delivers the pixel address and the time of arrival for each detected photon to an accuracy of 10 pS. Detector count rates of >2 x 105 counts s are possible in the time-tag mode, but the maximum count rate is limited at this time by the speed of our data acquisition hardware. The MAMA detector in the time-tag mode is currently being evaluated in programs of astrometry and speckle imaging.

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J. G. Timothy and J. S. Morgan "Imaging By Time-Tagging Photons With The Multi-Anode Microchannel Array Detector System", Proc. SPIE 0627, Instrumentation in Astronomy VI, (13 October 1986); https://doi.org/10.1117/12.968143

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