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Proceedings Paper

Imaging By Time-Tagging Photons With The Multi-Anode Microchannel Array Detector System
Author(s): J. G. Timothy; J. S. Morgan
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Paper 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.

Paper Details

Date Published: 13 October 1986
PDF: 6 pages
Proc. SPIE 0627, Instrumentation in Astronomy VI, (13 October 1986); doi: 10.1117/12.968143
Show Author Affiliations
J. G. Timothy, Stanford University (United States)
J. S. Morgan, Stanford University (United States)


Published in SPIE Proceedings Vol. 0627:
Instrumentation in Astronomy VI
David L. Crawford, Editor(s)

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