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Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
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Note: fast neutron efficiency in CR-39 nuclear track detectors.

S Cavallaro1

  • 1Dipartimento di Fisica ed Astronomia,Università di Catania, Via S. Sofia 44, 95123 Catania, Italy and INFN-LNS, Via S. Sofia 42, 95123 Catania, Italy.

The Review of Scientific Instruments
|April 3, 2015
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Summary

This study analyzes CR-39 detector efficiency for fast neutron detection. It examines how experimental conditions impact detector performance in fusion applications, offering insights for optimized neutron measurements.

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Area of Science:

  • Nuclear physics and engineering
  • Materials science for radiation detection

Background:

  • CR-39 plastic is a standard for fast neutron detection in fusion energy research.
  • Reported CR-39 efficiencies vary significantly due to experimental conditions.

Purpose of the Study:

  • To analyze CR-39 neutron detection efficiency dependence on various parameters.
  • To compare experimental data with simulations for optimized detector performance.

Main Methods:

  • Analysis of literature data on CR-39 detector efficiency.
  • Comparison of experimental results with Monte Carlo simulations.
  • Evaluation of both radiator-assisted and stand-alone CR-39 configurations.

Main Results:

  • Efficiency is highly sensitive to experimental parameters.
  • Monte Carlo calculations align with optimized efficiency values.
  • Discrepancies in literature data are explained by varying conditions.

Conclusions:

  • Understanding parameter dependence is crucial for accurate neutron detection.
  • Optimized CR-39 configurations can improve measurement reliability.
  • This analysis provides a basis for more consistent CR-39 detector use in fusion research.