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Proceedings Paper

Characterization of an ultraviolet imaging detector with high event rate ROIC (HEROIC) readout
Author(s): Nicholas Nell; Kevin France; Alex Harwit; Scott Bradley; Steve Franka; Ed Freymiller; Dennis Ebbets
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Paper Abstract

We present characterization results from a photon counting imaging detector consisting of one microchannel plate (MCP) and an array of two readout integrated circuits (ROIC) that record photon position. The ROICs used in the position readout are the high event rate ROIC (HEROIC) devices designed to handle event rates up to 1 MHz per pixel, recently developed by the Ball Aerospace and Technologies Corporation in collaboration with the University of Colorado. An opaque cesium iodide (CsI) photocathode sensitive in the far-ultraviolet (FUV; 122-200 nm), is deposited on the upper surface of the MCP. The detector is characterized in a chamber developed by CU Boulder that is capable of illumination with vacuum-ultraviolet (VUV) monochromatic light and measurement of absolute ux with a calibrated photodiode. Testing includes investigation of the effects of adjustment of internal settings of the HEROIC devices including charge threshold, gain, and amplifier bias. The detector response to high count rates is tested. We report initial results including background, uniformity, and quantum detection efficiency (QDE) as a function of wavelength.

Paper Details

Date Published: 27 July 2016
PDF: 8 pages
Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99152L (27 July 2016); doi: 10.1117/12.2233816
Show Author Affiliations
Nicholas Nell, Univ. of Colorado Boulder (United States)
Kevin France, Univ. of Colorado Boulder (United States)
Alex Harwit, Ball Aerospace & Technologies Corp. (United States)
Scott Bradley, Ball Aerospace & Technologies Corp. (United States)
Steve Franka, Ball Aerospace & Technologies Corp. (United States)
Ed Freymiller, Ball Aerospace & Technologies Corp. (United States)
Dennis Ebbets, Ball Aerospace & Technologies Corp. (United States)


Published in SPIE Proceedings Vol. 9915:
High Energy, Optical, and Infrared Detectors for Astronomy VII
Andrew D. Holland; James Beletic, Editor(s)

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