Assessment of Monte Carlo N-Particle variance reduction techniques for small solid angle neutron transport

dc.contributor.advisorCharlton, William S.
dc.contributor.committeeMemberLandsberger, Sheldon
dc.contributor.committeeMemberHaas, Derek
dc.contributor.committeeMemberGraham, Joseph
dc.creatorWebb, Matthew David
dc.creator.orcid0000-0002-2835-0745
dc.date.accessioned2022-09-14T00:00:12Z
dc.date.available2022-09-14T00:00:12Z
dc.date.created2022-05
dc.date.issued2022-05-03
dc.date.submittedMay 2022
dc.date.updated2022-09-14T00:00:13Z
dc.description.abstractA benchmark experiment for a small solid angle neutron transport system was designed and measured at The University of Texas's Nuclear Engineering Teaching Laboratory. The benchmark problem consists of an MP320 14.1MeV DT Neutron Generator streaming fast neutrons through an opening in a graphite rod. The flux at the far end of the graphite was measured with a Holmium activation foil and used to calculate the absolute source strength of the DT Generator. The experimental measurements were then compared to an analog MCNP simulation of the experimental setup to verify the benchmark MCNP problem was accurate with real world phenomena. Once the analog benchmark was verified, variance reduction methods were included in the MCNP simulation both independently and together in order to evaluate their effectiveness for small solid angle neutron transport problems. Multiple variance reduction techniques were identified to be effective when implemented individually. However, significant performance gains were achieved by implementing multiple complimentary variance reduction techniques in combination.
dc.description.departmentMechanical Engineering
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://hdl.handle.net/2152/115694
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/42592
dc.language.isoen
dc.subjectVariance reduction
dc.subjectSmall solid angle neutron transport
dc.subjectMCNP
dc.subjectNeutron transport
dc.subjectHolmium
dc.titleAssessment of Monte Carlo N-Particle variance reduction techniques for small solid angle neutron transport
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentMechanical Engineering
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorThe University of Texas at Austin
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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