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High-energy in-beam neutron measurements of metal-based shielding for accelerator-driven spallation neutron sources
European Spallat Source ERIC, POB 176, SE-22100 Lund, Sweden.;Lund Univ, Div Nucl Phys, SE-22100 Lund, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. European Spallat Source ERIC, POB 176, SE-22100 Lund, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. European Spallat Source ERIC, POB 176, SE-22100 Lund, Sweden..
European Spallat Source ERIC, POB 176, SE-22100 Lund, Sweden..
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2016 (English)In: PHYSICAL REVIEW ACCELERATORS AND BEAMS, ISSN 2469-9888, Vol. 19, no 5, UNSP 053501Article in journal (Refereed) Published
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Abstract [en]

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
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Subatomic Physics
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URN: urn:nbn:se:uu:diva-300079DOI: 10.1103/PhysRevAccelBeams.19.053501ISI: 000379351800001OAI: oai:DiVA.org:uu-300079DiVA: diva2:950732
Available from: 2016-08-02 Created: 2016-08-02 Last updated: 2016-08-02Bibliographically approved

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