IER 480: TEX-Pu Benchmark (PU-MET-THERM-004) to Test Polyethylene and Lucite Thermal Scattering Laws [Slides]

Conference · Tue Feb 20 04:00:00 EST 2024

DOI:https://doi.org/10.2172/2350940· OSTI ID:2350940

Percher, Catherine ^[1]; Lee, Marc ^[1]; Aboud, Eric ^[1]; Brovchenko, Mariya ^[2]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
2. Inst. for Radiological Protection and Nuclear Safety (IRSN), Fontenay-aux-Roses (France)

This presentation finds that PMT-004 has four new benchmark cases highly sensitive to PE TSL (2 cases) and PMMA TSL (2 Cases). PE cases were well predicted using MCNP6.2 and ENDF/B-VIII.0. PMMA cases overpredicted by approximately 0.6-0.7% in k_eff at 20°C. Accepted into 2023 version of the ICSBEP Handbook. Temperature had a large impact on reactivity of the critical configuration. Implications for validation work for thermal cases- need to adjust TSL data to correct temperature as it can have hundreds of pcm effects for a few °C. Future thermal experiments should try and measure reactivity at multiple temperatures to aid in data testing and benchmark adjustment.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Inst. for Radiological Protection and Nuclear Safety (IRSN), Fontenay-aux-Roses (France)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• OSTI ID: 2350940
• Report Number(s): LLNL-PRES--860446
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Benchmark Calculations
Benchmark Results
Integral Experiment
Nuclear Criticality Safety Program (NCSP)
Temperature Effect