Exploring fine subpixel spatial resolution of hybrid CMOS detectors

Evan Bray, Abraham Falcone, Samuel V. Hull, David N. Burrows

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2018
Subtitle of host publicationUltraviolet to Gamma Ray
EditorsShouleh Nikzad, Jan-Willem A. Den Herder, Kazuhiro Nakazawa
PublisherSPIE
ISBN (Print)9781510619517
DOIs
StatePublished - Jan 1 2018
EventSpace Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray - Austin, United States
Duration: Jun 10 2018Jun 15 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10699
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSpace Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
CountryUnited States
CityAustin
Period6/10/186/15/18

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Bray, E., Falcone, A., Hull, S. V., & Burrows, D. N. (2018). Exploring fine subpixel spatial resolution of hybrid CMOS detectors. In S. Nikzad, J-W. A. Den Herder, & K. Nakazawa (Eds.), Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray [106995Q] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10699). SPIE. https://doi.org/10.1117/12.2312846