Exploring fine subpixel spatial resolution of hybrid CMOS detectors

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

doi:10.1117/12.2312846

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 proceeding › Conference contribution

4 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 language	English (US)
Title of host publication	Space Telescopes and Instrumentation 2018
Subtitle of host publication	Ultraviolet to Gamma Ray
Editors	Shouleh Nikzad, Jan-Willem A. Den Herder, Kazuhiro Nakazawa
Publisher	SPIE
ISBN (Print)	9781510619517
DOIs	https://doi.org/10.1117/12.2312846
State	Published - 2018
Event	Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray - Austin, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10699
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Country/Territory	United States
City	Austin
Period	6/10/18 → 6/15/18

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1117/12.2312846

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 Article 106995Q (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10699). SPIE. https://doi.org/10.1117/12.2312846

@inproceedings{6221eab63fc34366b6bfd9b927cd239e,

title = "Exploring fine subpixel spatial resolution of hybrid CMOS detectors",

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.",

author = "Evan Bray and Abraham Falcone and Hull, {Samuel V.} and Burrows, {David N.}",

note = "Funding Information: This work was supported by NASA grants NNX14AH68G, NNX16AO90H, NNX16AE27G, 80NSSC18K0147, NNX13AE57G, and NNX16AE27G. Publisher Copyright: {\textcopyright} 2018 SPIE.; Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray ; Conference date: 10-06-2018 Through 15-06-2018",

year = "2018",

doi = "10.1117/12.2312846",

language = "English (US)",

isbn = "9781510619517",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Shouleh Nikzad and {Den Herder}, {Jan-Willem A.} and Kazuhiro Nakazawa",

booktitle = "Space Telescopes and Instrumentation 2018",

address = "United States",

}

Bray, E, Falcone, A, Hull, SV & Burrows, DN 2018, Exploring fine subpixel spatial resolution of hybrid CMOS detectors. in S Nikzad, J-WA 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, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2312846

Exploring fine subpixel spatial resolution of hybrid CMOS detectors. / Bray, Evan; Falcone, Abraham; Hull, Samuel V. et al.
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray. ed. / Shouleh Nikzad; Jan-Willem A. Den Herder; Kazuhiro Nakazawa. SPIE, 2018. 106995Q (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10699).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Exploring fine subpixel spatial resolution of hybrid CMOS detectors

AU - Bray, Evan

AU - Falcone, Abraham

AU - Hull, Samuel V.

AU - Burrows, David N.

PY - 2018

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N2 - 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.

AB - 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.

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Y2 - 10 June 2018 through 15 June 2018

ER -

Exploring fine subpixel spatial resolution of hybrid CMOS detectors

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