A Polyethylene-B4C based concrete for enhanced neutron shielding at neutron research facilities
| Autor: | J. Scherzinger, Kevin Fissum, H. Perrey, Phillip M. Bentley, Carsten P. Cooper-Jensen, E. Rofors, Douglas D. DiJulio |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
Neutron transport Physics - Instrumentation and Detectors Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory FOS: Physical sciences Neutron scattering 010403 inorganic & nuclear chemistry 01 natural sciences 7. Clean energy Nuclear physics 0103 physical sciences Neutron detection Neutron Nuclear Experiment Instrumentation Physics 010308 nuclear & particles physics Instrumentation and Detectors (physics.ins-det) Neutron radiation Neutron temperature 0104 chemical sciences 3. Good health Neutron capture Neutron source Physics::Accelerator Physics |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Popis: | We present the development of a specialized concrete for neutron shielding at neutron research facilities, based on the addition of hydrogen atoms in the form of polyethylene and also B$_{4}$C for enhancing the neutron capture properties of the concrete. We show information on the mechanical properties of the concrete and the neutronics, in particular it's relevance to modern spallation neutron sources, such as the European Spallation Source (ESS), currently under construction in Lund, Sweden. The new concrete exhibits a 15% lower mass density, a compressible strength of 50% relative to a standard concrete and a significant increase in performance of shielding against MeV neutrons and lower energies. The concrete could find application at the ESS in for example common shielding components, individual beamline shielding and instrument caves. Initial neutronic tests of the concrete, carried out at Lund University, have also verified the performance in the MeV neutron energy range and the results are presented. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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