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Exploring fine subpixel spatial resolution of hybrid CMOS detectors
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Paper Abstract

When an X-ray is incident onto the silicon absorber array of a detector, it liberates a large number of electrons, which tend to diffuse outward into what is referred to as the charge cloud. This number can vary from tens to thousands across the soft X-ray bandpass (0.1 - 10 keV). The charge cloud can then be picked up by several pixels, and forms a specific pattern based on the exact incident location of the X-ray. We present experimental results on subpixel resolution for a custom H2RG with 36μm pixels, presented in Bray 2018,1 and compare the data to simulated images . We then apply the model simulation to a prototype small pixel hybrid CMOS detector (HCD) that would be suitable for the Lynx X-ray surveyor. We also discuss the ability of a small pixel detector to obtain subpixel resolution.

Paper Details

Date Published: 6 July 2018
PDF: 7 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106995Q (6 July 2018); doi: 10.1117/12.2312846
Show Author Affiliations
Evan Bray, The Pennsylvania State Univ. (United States)
Abraham Falcone, The Pennsylvania State Univ. (United States)
Samuel V. Hull, The Pennsylvania State Univ. (United States)
David N Burrows, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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