A new columnar CsI(Tl) scintillator for iQID detectors

Ling Han, Brian W. Miller, H. Bradford Barber, Vivek V. Nagarkar, Lars R. Furenlid

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

2 Scopus citations

Abstract

A 1650 μm thick columnar CsI(Tl) scintillator for upgrading iQID detectors, which is a high-resolution photon-counting gamma-ray and x-ray detector recently developed at the Center for Gamma-Ray Imaging (CGRI), has been studied in terms of sensitivity, spatial resolution and depth-of-interaction effects. To facilitate these studies, a new frame-parsing algorithm for processing raw event data is also proposed that has more degrees of freedom in data processing and can discriminate against a special kind of noise present in some low-cost intensifiers. The results show that in comparison with a 450 μm-thickness columnar CsI(Tl) scintillator, the 1650 μm thick CsI(Tl) scintillator provides more than twice the sensitivity at the expense of some spatial resolution degradation. The depth-of-interaction study also shows that event size and amplitude vary with scintillator thickness, which can assist in future detector simulations and 3D-interactionposition estimation.

Original languageEnglish (US)
Title of host publicationMedical Applications of Radiation Detectors IV
EditorsHans N. Roehrig, Lars R. Furenlid, H. Bradford Barber
PublisherSPIE
ISBN (Electronic)9781628412413
DOIs
StatePublished - Jan 1 2014
EventMedical Applications of Radiation Detectors IV - San Diego, United States
Duration: Aug 18 2014Aug 21 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9214
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherMedical Applications of Radiation Detectors IV
CountryUnited States
CitySan Diego
Period8/18/148/21/14

Keywords

  • Columnar CsI(Tl)
  • Depth of interaction
  • Frame parsing
  • IQID detector
  • Noise discrimination
  • Resolution
  • Sensitivity
  • Thick scintillator

ASJC Scopus subject areas

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

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  • Cite this

    Han, L., Miller, B. W., Barber, H. B., Nagarkar, V. V., & Furenlid, L. R. (2014). A new columnar CsI(Tl) scintillator for iQID detectors. In H. N. Roehrig, L. R. Furenlid, & H. B. Barber (Eds.), Medical Applications of Radiation Detectors IV [92140D] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9214). SPIE. https://doi.org/10.1117/12.2066179