Mini Compton Camera Based on an Array of Virtual Frisch-Grid CdZnTe Detectors

Won Ho Lee, Aleksey Bolotnikov, Taewoong Lee, Giuseppe Camarda, Yonggang Cui, Rubi Gul, Anwar Hossain, Roy Utpal, Ge Yang, Ralph James

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We constructed a mini Compton camera based on an array of CdZnTe detectors and assessed its spectral and imaging properties. The entire array consisted of 6 × 6 Frisch-grid CdZnTe detectors, each with a size of 6 × 6 ×15mm3. Since it is easier and more practical to grow small CdZnTe crystals rather than large monolithic ones, constructing a mosaic array of parallelepiped crystals can be an effective way to build a more efficient, large-volume detector. With the fully operational CdZnTe array, we measured the energy spectra for 133Ba} - 137Cs - , 60Co-radiation sources; we also located these sources using a Compton imaging approach. Although the Compton camera was small enough to hand-carry, its intrinsic efficiency was several orders higher than those generated in previous researches using spatially separated arrays, because our camera measured the interactions inside the CZT detector array, wherein the detector elements were positioned very close to each other. The performance of our camera was compared with that based on a pixelated detector.

Original languageEnglish
Article number7407479
Pages (from-to)259-265
Number of pages7
JournalIEEE Transactions on Nuclear Science
Volume63
Issue number1
DOIs
Publication statusPublished - 2016 Feb 1

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Cameras
cameras
grids
Detectors
detectors
Imaging techniques
parallelepipeds
Crystals
radiation sources
crystals
energy spectra
Radiation
interactions

Keywords

  • CdZnTe
  • Compton camera
  • electronic collimation
  • Frisch-grid

ASJC Scopus subject areas

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

Cite this

Lee, W. H., Bolotnikov, A., Lee, T., Camarda, G., Cui, Y., Gul, R., ... James, R. (2016). Mini Compton Camera Based on an Array of Virtual Frisch-Grid CdZnTe Detectors. IEEE Transactions on Nuclear Science, 63(1), 259-265. [7407479]. https://doi.org/10.1109/TNS.2015.2514120

Mini Compton Camera Based on an Array of Virtual Frisch-Grid CdZnTe Detectors. / Lee, Won Ho; Bolotnikov, Aleksey; Lee, Taewoong; Camarda, Giuseppe; Cui, Yonggang; Gul, Rubi; Hossain, Anwar; Utpal, Roy; Yang, Ge; James, Ralph.

In: IEEE Transactions on Nuclear Science, Vol. 63, No. 1, 7407479, 01.02.2016, p. 259-265.

Research output: Contribution to journalArticle

Lee, WH, Bolotnikov, A, Lee, T, Camarda, G, Cui, Y, Gul, R, Hossain, A, Utpal, R, Yang, G & James, R 2016, 'Mini Compton Camera Based on an Array of Virtual Frisch-Grid CdZnTe Detectors', IEEE Transactions on Nuclear Science, vol. 63, no. 1, 7407479, pp. 259-265. https://doi.org/10.1109/TNS.2015.2514120
Lee, Won Ho ; Bolotnikov, Aleksey ; Lee, Taewoong ; Camarda, Giuseppe ; Cui, Yonggang ; Gul, Rubi ; Hossain, Anwar ; Utpal, Roy ; Yang, Ge ; James, Ralph. / Mini Compton Camera Based on an Array of Virtual Frisch-Grid CdZnTe Detectors. In: IEEE Transactions on Nuclear Science. 2016 ; Vol. 63, No. 1. pp. 259-265.
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