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MCNPX simulations of the SCANDAL setup for measurement of neutron scattering cross section at 175MeV
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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2010 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 81, no 6, 065202- p.Article in journal (Refereed) Published
Abstract [en]

The Scattered Nucleon Detection Assembly (SCANDAL) setup at The Svedberg Laboratory has been used to produce neutron elastic scattering cross section data at 175MeV for bismuth and iron. This work presents MCNPX simulations of the experimental setup and aims to describe processes and data important for the upcoming off-line data analysis. In the experiment, neutrons scattered off the target are converted to protons, which are stopped in scintillator crystals. The results include a description of the proton spectra dependence on the neutron-to-proton conversion angle, suggesting a cut at a conversion angle of 15.2 degrees. Calculation of the hit position gates indicates high proton leakage from the crystals. A study of the converter describes the role of its chemical composition and also the role of other plastic scintillators on the proton spectra. The neutron-to-proton conversion efficiency of the converter simulated by MCNPX is 5.1x10(-4) and corresponds to theoretical predictions.

Place, publisher, year, edition, pages
2010. Vol. 81, no 6, 065202- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-136076DOI: 10.1088/0031-8949/81/06/065202ISI: 000278412300008OAI: oai:DiVA.org:uu-136076DiVA: diva2:376158
Available from: 2010-12-10 Created: 2010-12-09 Last updated: 2017-12-11

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Gustavsson, CeciliaPomp, StephanÖsterlund, MichaelHjalmarsson, AndersProkofiev, Alexander V.

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Gustavsson, CeciliaPomp, StephanÖsterlund, MichaelHjalmarsson, AndersProkofiev, Alexander V.
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Department of Physics and AstronomyApplied Nuclear PhysicsThe Svedberg Laboratory
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