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Monte Carlo characterisation of a Compton suppressed broad-energy HPGe detector

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Abstract

GEANT4 Monte Carlo simulations have been successfully utilised to characterise a Compton suppressed broad-energy HPGe detector. The detector setup has been fully recreated in the simulation, which has been optimised to consistently reproduce the detector response. The peak efficiencies for both the primary BEGe detector and NaI(Tl) guard detectors agree with the simulated values for multiple test sources within 3 %. Compton suppression has also been simulated, with good agreement seen between the simulated and actual CSF values (<10 %) for multiple radionuclides. A secondary reference source was also simulated, which contained up to 30 radionuclides in a different geometry to that of the previous source. This showed excellent agreement with experimental data in both unsuppressed and suppressed modes of operation.

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Acknowledgments

Thank you to the University of Surrey, the AWE Technical Outreach Program, EPSRC and the National Skills Academy for Nuclear for funding this research. The gratitude of the authors is also extended to the reviewers, whose comments helped to improve this manuscript.

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Authors and Affiliations

  1. University of Surrey, Guildford, GU2 7XH, UK

    R. Britton & P. H. Regan

  2. AWE, Aldermaston, Reading, Berkshire, RG7 4PR, UK

    R. Britton, J. L. Burnett & A. V. Davies

Authors
  1. R. Britton
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  2. J. L. Burnett
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  3. A. V. Davies
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  4. P. H. Regan
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Correspondence to R. Britton.

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Britton, R., Burnett, J.L., Davies, A.V. et al. Monte Carlo characterisation of a Compton suppressed broad-energy HPGe detector. J Radioanal Nucl Chem 300, 1253–1259 (2014). https://doi.org/10.1007/s10967-014-3029-x

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  • DOI: https://doi.org/10.1007/s10967-014-3029-x

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