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DOE OSTI · 3394086

Integral Experiment Execution of Thermal or Epithermal eXperiments using Plutonium with Polyethylene and Iron, IER 519, TEX-Hanford (-Iron), CED-3b

Glesmann, Jacob [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)]·Morgan, Joanna P. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)]·Sanchez, Rene [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]·Grove, Travis J. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)]·Lemke, Zachariah [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]
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Abstract

This report documents the execution of experiments and measurements for IER 519, Thermal/Epithermal eXperiments (TEX) for Hanford applications, using plutonium Zero Power Physics Reactor (ZPPR) plates moderated by interstitial polyethylene and iron (Fe) absorber plates. Initial hand stack, mass, and dimensional measurements were performed in July 2025. The experiments were completed over three weeks from December 2025 to January 2026 at the National Criticality Experiments Research Center (NCERC) at the Nevada National Security Sites (NNSS). All photos and critical data were provided by NCERC and experimenters in LANL’s NEN-2.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSNuclearNuclear science and engineeringNuclear WastePlutoniumThermal/Epithermal eXperimentsZero Power Physics Reactor

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Glesmann, Jacob [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Morgan, Joanna P. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Sanchez, Rene [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)], Grove, Travis J. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)], Lemke, Zachariah [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)]. 2026-06-30. Integral Experiment Execution of Thermal or Epithermal eXperiments using Plutonium with Polyethylene and Iron, IER 519, TEX-Hanford (-Iron), CED-3b. https://doi.org/10.2172/3394086

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