Imaging properties of pixellated scintillators with deep pixels

H. Bradford Barber, David Fastje, Daniel Lemieux, Gary P. Grim, Lars R. Furenlid, Brian W. Miller, Philip Parkhurst, Vivek V. Nagarkar

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

1 Scopus citations

Abstract

We have investigated the light-transport properties of scintillator arrays with long, thin pixels (deep pixels) for use in high-energy gamma-ray imaging. We compared 10x10 pixel arrays of YSO:Ce, LYSO:Ce and BGO (1mm x 1mm x 20 mm pixels) made by Proteus, Inc. with similar 10x10 arrays of LSO:Ce and BGO (1mm x 1mm x 15mm pixels) loaned to us by Saint-Gobain. The imaging and spectroscopic behaviors of these scintillator arrays are strongly affected by the choice of a reflector used as an inter-pixel spacer (3M ESR in the case of the Proteus arrays and white, diffuse-reflector for the Saint-Gobain arrays). We have constructed a 3700-pixel LYSO:Ce Prototype NIF Gamma-Ray Imager for use in diagnosing target compression in inertial confinement fusion. This system was tested at the OMEGA Laser and exhibited significant optical, inter-pixel cross-talk that was traced to the use of a single-layer of ESR film as an inter-pixel spacer. We show how the optical cross-talk can be mapped, and discuss correction procedures. We demonstrate a 10x10 YSO:Ce array as part of an iQID (formerly BazookaSPECT) imager and discuss issues related to the internal activity of 176Lu in LSO:Ce and LYSO:Ce detectors.

Original languageEnglish (US)
Title of host publicationRadiation Detectors
Subtitle of host publicationSystems and Applications XV
EditorsGary P. Grim, H. Bradford Barber
PublisherSPIE
ISBN (Electronic)9781628412420
DOIs
StatePublished - Jan 1 2014
EventRadiation Detectors: Systems and Applications XV - San Diego, United States
Duration: Aug 18 2014Aug 20 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9215
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherRadiation Detectors: Systems and Applications XV
CountryUnited States
CitySan Diego
Period8/18/148/20/14

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Keywords

  • High-energy gamma-ray imaging
  • Internal radioactivity
  • LSO
  • LYSO
  • Pixellated scintillators
  • Scintillators

ASJC Scopus subject areas

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

Cite this

Barber, H. B., Fastje, D., Lemieux, D., Grim, G. P., Furenlid, L. R., Miller, B. W., Parkhurst, P., & Nagarkar, V. V. (2014). Imaging properties of pixellated scintillators with deep pixels. In G. P. Grim, & H. B. Barber (Eds.), Radiation Detectors: Systems and Applications XV [92150F] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9215). SPIE. https://doi.org/10.1117/12.2066172