New virtual Frisch-grid CdZnTe detector design with sub-millimeter spatial resolution

Kisung Lee; Aleksey Bolotnikov; Seungbin Bae; Utpal Roy; Giuseppe Camarda; Matthew Petryk; Yonggang Cui; Anwar Hossain; Ge Yang; Vaclav Dedic; Kihyun Kim; Ralph B. James

doi:10.1109/TNS.2014.2348572

New virtual Frisch-grid CdZnTe detector design with sub-millimeter spatial resolution

Kisung Lee, Aleksey Bolotnikov, Seungbin Bae, Utpal Roy, Giuseppe Camarda, Matthew Petryk, Yonggang Cui, Anwar Hossain, Ge Yang, Vaclav Dedic, Kihyun Kim, Ralph B. James

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We evaluated the performance of a position-sensitive virtual Frisch-grid (VFG) CdZnTe detector, 6 mm x 6 mm x 15 mm, via sensing strips on its side surfaces.Once the signals were collected from the anode, and from four or eight strips attached to the detector's sides, we assessed the anode's energy spectra and derived histograms from the side electrodes to evaluate the feasibility of achieving sub-millimeter spatial resolution in the X-Y plane. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source, and applying corrections to the raw data, we determined the photon-interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm.With the VFG detector's current configuration, we achieved a resolution below 1 mm, even for low-energy X-rays.

Original language	English
Article number	2348572
Pages (from-to)	2567-2572
Number of pages	6
Journal	IEEE Transactions on Nuclear Science
Volume	61
Issue number	5
DOIs	https://doi.org/10.1109/TNS.2014.2348572
Publication status	Published - 2014 Oct 1

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

CdZnTe
Frisch-grid
Position-sensitive
Positioning algorithm
Radiation detector

ASJC Scopus subject areas

Nuclear and High Energy Physics
Nuclear Energy and Engineering
Electrical and Electronic Engineering

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10.1109/TNS.2014.2348572

Cite this

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title = "New virtual Frisch-grid CdZnTe detector design with sub-millimeter spatial resolution",

abstract = "We evaluated the performance of a position-sensitive virtual Frisch-grid (VFG) CdZnTe detector, 6 mm x 6 mm x 15 mm, via sensing strips on its side surfaces.Once the signals were collected from the anode, and from four or eight strips attached to the detector's sides, we assessed the anode's energy spectra and derived histograms from the side electrodes to evaluate the feasibility of achieving sub-millimeter spatial resolution in the X-Y plane. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source, and applying corrections to the raw data, we determined the photon-interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm.With the VFG detector's current configuration, we achieved a resolution below 1 mm, even for low-energy X-rays.",

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AU - Lee, Kisung

AU - Bolotnikov, Aleksey

AU - Bae, Seungbin

AU - Roy, Utpal

AU - Camarda, Giuseppe

AU - Petryk, Matthew

AU - Cui, Yonggang

AU - Hossain, Anwar

AU - Yang, Ge

AU - Dedic, Vaclav

AU - Kim, Kihyun

AU - James, Ralph B.

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N2 - We evaluated the performance of a position-sensitive virtual Frisch-grid (VFG) CdZnTe detector, 6 mm x 6 mm x 15 mm, via sensing strips on its side surfaces.Once the signals were collected from the anode, and from four or eight strips attached to the detector's sides, we assessed the anode's energy spectra and derived histograms from the side electrodes to evaluate the feasibility of achieving sub-millimeter spatial resolution in the X-Y plane. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source, and applying corrections to the raw data, we determined the photon-interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm.With the VFG detector's current configuration, we achieved a resolution below 1 mm, even for low-energy X-rays.

AB - We evaluated the performance of a position-sensitive virtual Frisch-grid (VFG) CdZnTe detector, 6 mm x 6 mm x 15 mm, via sensing strips on its side surfaces.Once the signals were collected from the anode, and from four or eight strips attached to the detector's sides, we assessed the anode's energy spectra and derived histograms from the side electrodes to evaluate the feasibility of achieving sub-millimeter spatial resolution in the X-Y plane. Using a highly collimated 30-keV X-ray beam at the National Synchrotron Light Source, and applying corrections to the raw data, we determined the photon-interaction points by conventional Anger logic and via a more sophisticated statistics-based positioning (SBP) algorithm.With the VFG detector's current configuration, we achieved a resolution below 1 mm, even for low-energy X-rays.

KW - CdZnTe

KW - Frisch-grid

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KW - Positioning algorithm

KW - Radiation detector

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New virtual Frisch-grid CdZnTe detector design with sub-millimeter spatial resolution

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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