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Proceedings Paper

The effect of gain variation in micro-channel plates on gamma-ray energy resolution
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Paper Abstract

A Monte Carlo simulation of micro-channel plate (MCP) with particular interest in its effect on energy resolution performance is presented. Important physical processes occurring in MCP channels are described and modeled, including secondary electron (SE) yield, SE emission, and primary electron reflection. The effects causing channel saturation are also introduced. A two dimensional Monte Carlo simulation is implemented under the assumption of unsaturated channel. Simulation results about basic MCP performances and especially gain and energy resolution performances are presented and analyzed. It’s found that energy resolution as an intrinsic property of MCP cannot be improved simply by adjusting system parameters; however it can be improved by increasing input signal or number of photoelectrons (PEs) in the context of image intensifier. An initial experiment with BazookaSPECT detector and CsI(Tl) scintillator is performed to validate and correlate with the simulation results and good agreement is achieved.

Paper Details

Date Published: 26 September 2013
PDF: 10 pages
Proc. SPIE 8853, Medical Applications of Radiation Detectors III, 88530D (26 September 2013); doi: 10.1117/12.2030076
Show Author Affiliations
Ling Han, College of Optical Sciences, The Univ. of Arizona (United States)
Harrison H. Barrett, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (United States)
H. Bradford Barber, College of Optical Sciences, The Univ. of Arizona (United States)
The Univ. of Arizona (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. 8853:
Medical Applications of Radiation Detectors III
H. Bradford Barber; Hans Roehrig, Editor(s)

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