Characterization of an ultraviolet imaging detector with high event rate ROIC (HEROIC) readout

Nicholas Nell; Kevin France; Alex Harwit; Scott Bradley; Steve Franka; Ed Freymiller; Dennis Ebbets

doi:10.1117/12.2233816

27 July 2016 Characterization of an ultraviolet imaging detector with high event rate ROIC (HEROIC) readout

Nicholas Nell, Kevin France, Alex Harwit, Scott Bradley, Steve Franka, Ed Freymiller, Dennis Ebbets

Proceedings Volume 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII; 99152L (2016) https://doi.org/10.1117/12.2233816
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

Nicholas Nell, Kevin France, Alex Harwit, Scott Bradley, Steve Franka, Ed Freymiller, and Dennis Ebbets "Characterization of an ultraviolet imaging detector with high event rate ROIC (HEROIC) readout", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 99152L (27 July 2016); https://doi.org/10.1117/12.2233816

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