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Proceedings Paper

A new columnar CsI(Tl) scintillator for iQID detectors
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Paper 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.

Paper Details

Date Published: 12 September 2014
PDF: 10 pages
Proc. SPIE 9214, Medical Applications of Radiation Detectors IV, 92140D (12 September 2014); doi: 10.1117/12.2066179
Show Author Affiliations
Ling Han, The Univ. of Arizona (United States)
Brian W. Miller, College of Optical Sciences, The Univ. of Arizona (United States)
Pacific Northwest National Lab. (United States)
H. Bradford Barber, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)
Vivek V Nagarkar, Radiation Monitoring Devices, Inc. (United States)
Lars R. Furenlid, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9214:
Medical Applications of Radiation Detectors IV
H. Bradford Barber; Lars R. Furenlid; Hans N. Roehrig, Editor(s)

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