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

Ling Han, Harrison H. Barrett, H. Bradford Barber, Lars R. Furenlid

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

2 Scopus citations


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.

Original languageEnglish (US)
Title of host publicationMedical Applications of Radiation Detectors III
StatePublished - 2013
EventMedical Applications of Radiation Detectors III - San Diego, CA, United States
Duration: Aug 28 2013Aug 29 2013

Publication series

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


OtherMedical Applications of Radiation Detectors III
Country/TerritoryUnited States
CitySan Diego, CA


  • BazookaSPECT detector
  • Micro-channel plate (MCP)
  • Monte Carlo simulation
  • electron multiplier
  • energy resolution
  • gain variation
  • image intensifier
  • secondary electron emission

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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