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Monte Carlo simulation of the CERN-EU High Energy Reference Field (CERF) facility.
Radiat. Meas. 133:106294 (2020)
In the present paper Geant4 Monte Carlo simulations of the CERN-EU high-energy Reference Field (CERF) facility in Geneva, Switzerland, are presented. At this facility a neutron field with a broad energy distribution from thermal energies up to GeV is available. To validate the simulated neutron fluences, the CERF neutron energy distribution was also measured with an extended range Bonner Sphere Spectrometer. Both measurements and simulations are compared against the official CERF reference distributions that were calculated with the Monte Carlo code FLUKA. It turned out that the differences between the total neutron fluences simulated with Geant4 and those measured were less than 41%, depending on the measurement position. While the total fluences simulated with the Geant4 Binary INC model (QGSP_BIC_HP) and the corresponding FLUKA reference values were up to 41% lower than those measured, the total fluences simulated with the Geant4 Bertini INC model (QGSP_BERT_HP) overestimated (up to 27%) the experimental results. As compared to the measured ambient dose equivalent H*(10), similar differences were observed with H*(10) values higher by about 29% for the Geant4 Bertini INC simulations and lower by about 48% for the Geant4 Binary INC and FLUKA simulations.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Cerf ; Monte Carlo Simulation ; Geant4 ; Fluka ; Bonner Sphere Spectroscopy ; High-energy Neutrons; Bonner Sphere Sets; Response Functions; Neutron-spectra; Spectrometer; Sensitivity; Calibration; Altitudes
ISSN (print) / ISBN
1350-4487
e-ISSN
1879-0925
Journal
Radiation Measurements
Quellenangaben
Volume: 133,
Article Number: 106294
Publisher
Elsevier
Publishing Place
The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1gb, England
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Radiation Medicine (IRM)