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Accurate simulations of TEPC neutron spectra using Geant4

Research output: Contribution to journalJournal articlepeer-review

  • G. C. Taylor
  • Nigel Hawkes
  • Alan Shippen
<mark>Journal publication date</mark>11/2015
<mark>Journal</mark>Radiation Physics and Chemistry
Number of pages3
Pages (from-to)186-188
Publication StatusPublished
Early online date16/06/15
<mark>Original language</mark>English


A Geant4 model of a tissue-equivalent proportional counter (TEPC) has been developed in which the calculated output spectrum exhibits unparalleled agreement with experiment for monoenergetic neutron fields at several energies below 20 MeV. The model uses the standard release of the Geant4 9.6 p2 code, but with a non-standard neutron cross section file as provided by Mendoza et al., and with the environment variable options recommended by the same authors.

This configuration was found to produce significant improvements in the alpha-dominated region of the calculated response. In this paper, these improvements are presented, and the post-processing required to convert deposited energy into the number of ion pairs (which is the quantity actually measured experimentally) is discussed.