Geant4 simulations of neutron production in a thorium fuelled accelerator driven subcritical reactors

David Sangcheol Lee, Robert Cywinski, Cristian Bungau, Rebecca Seviour

Research output: Contribution to journalArticle

Abstract

Spallation taken from the middle English spalle, is an efficient process for producing an intense neutron flux suitable for exploitation in Accelerator Driven Subcritical Reactors (ADSRs) for energy production and the transmutation. In order to assess spallation driven fission and transmutation we have simulated proton induced neutron production using GEANT4. Benchmarking our simulations against experimental neutron spectra produced from a thick lead target bombarded with 0.5 and 1.5 GeV protons. The Bertini and INCL models available in GEANT4, coupled with the high precision (HP) neutron model, are found to reproduce the published experimental data. Given the confidence in the GEANT4 simulations provided by this benchmarking we then proceed to study neutron production in an ADSR using Thorium in a geometry similar to that of the proposed Belgian MYRRHA project with 0.6 GeV proton beam energy that proposed by SCKCEN.

Original languageEnglish
Number of pages11
JournalProceedings of Science
Volume279
Early online date23 Feb 2017
DOIs
Publication statusPublished - 14 Apr 2017
Event4th Workshop on ADS and Thorium - University of Huddersfield, Huddersfield, United Kingdom
Duration: 31 Aug 20162 Sep 2016
Conference number: 4
https://pos.sissa.it/279/ (Link to Event Details)

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