High-energy in-beam neutron measurements of metal-based shielding for accelerator-driven spallation neutron sources
2016 (English)In: PHYSICAL REVIEW ACCELERATORS AND BEAMS, ISSN 2469-9888, Vol. 19, no 5, UNSP 053501Article in journal (Refereed) PublishedText
Metal-based shielding plays an important role in the attenuation of harmful and unwanted radiation at an accelerator-driven spallation neutron source. At the European Spallation Source, currently under construction in Lund, Sweden, metal-based materials are planned to be used extensively as neutron guide substrates in addition to other shielding structures around neutron guides. The usage of metal-based materials in the vicinity of neutron guides however requires careful consideration in order to minimize potential background effects in a neutron instrument at the facility. Therefore, we have carried out a combined study involving high-energy neutron measurements and Monte Carlo simulations of metal-based shielding, both to validate the simulation methodology and also to investigate the benefits and drawbacks of different metal-based solutions. The measurements were carried out at The Svedberg Laboratory in Uppsala, Sweden, using a 174.1 MeV neutron beam and various thicknesses of aluminum-, iron-, and copper-based shielding blocks. The results were compared to Geant4 simulations and revealed excellent agreement. Our combined study highlights the particular situations where one type of metal-based solution may be preferred over another.
Place, publisher, year, edition, pages
2016. Vol. 19, no 5, UNSP 053501
IdentifiersURN: urn:nbn:se:uu:diva-300079DOI: 10.1103/PhysRevAccelBeams.19.053501ISI: 000379351800001OAI: oai:DiVA.org:uu-300079DiVA: diva2:950732