Computational Benchmark Calculations Relevant to the Neutronic Design of the Spallation Neutron Source (SNS)

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The Spallation Neutron Source (SNS) will provide an intense source of low-energy neutrons for experimental use. The low-energy neutrons are produced by the interaction of a high-energy (1.0 GeV) proton beam on a mercury (Hg) target and slowed down in liquid hydrogen or light water moderators. Computer codes and computational techniques are being benchmarked against relevant experimental data to validate and verify the tools being used to predict the performance of the SNS. The LAHET Code System (LCS), which includes LAHET, HTAPE ad HMCNP (a modified version of MCNP version 3b), have been applied to the analysis of experiments that ... continued below

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8 pages

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Gallmeier, F.X.; Glasgow, D.C.; Jerde, E.A.; Johnson, J.O. & Yugo, J.J. November 14, 1999.

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The Spallation Neutron Source (SNS) will provide an intense source of low-energy neutrons for experimental use. The low-energy neutrons are produced by the interaction of a high-energy (1.0 GeV) proton beam on a mercury (Hg) target and slowed down in liquid hydrogen or light water moderators. Computer codes and computational techniques are being benchmarked against relevant experimental data to validate and verify the tools being used to predict the performance of the SNS. The LAHET Code System (LCS), which includes LAHET, HTAPE ad HMCNP (a modified version of MCNP version 3b), have been applied to the analysis of experiments that were conducted in the Alternating Gradient Synchrotron (AGS) facility at Brookhaven National Laboratory (BNL). In the AGS experiments, foils of various materials were placed around a mercury-filled stainless steel cylinder, which was bombarded with protons at 1.6 GeV. Neutrons created in the mercury target, activated the foils. Activities of the relevant isotopes were accurately measured and compared with calculated predictions. Measurements at BNL were provided in part by collaborating scientists from JAERI as part of the AGS Spallation Target Experiment (ASTE) collaboration. To date, calculations have shown good agreement with measurements.

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8 pages

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INIS; OSTI as DE00011471

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  • Embedded Topical Meeting on Nuclear Applications of Accelerator Technology (AccApp'99), Long Beach, CA (US), 11/14/1999--11/18/1999

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  • Report No.: ORNL/CP-104532
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 11471
  • Archival Resource Key: ark:/67531/metadc623397

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 14, 1999

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  • June 16, 2015, 7:43 a.m.

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  • Jan. 25, 2016, 12:22 p.m.

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Gallmeier, F.X.; Glasgow, D.C.; Jerde, E.A.; Johnson, J.O. & Yugo, J.J. Computational Benchmark Calculations Relevant to the Neutronic Design of the Spallation Neutron Source (SNS), article, November 14, 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc623397/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.