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Comparison of MAVRIC/Monaco and TRIPOLI-4 Simulations of the LLNL Pulsed Spheres Benchmark Experiments

Abstract : Oak Ridge National Laboratory and the Commissariat à l’Énergie Atomique et aux Énergies Alternatives – Centre de Saclay performed simulations of the Lawrence Livermore Pulses Spheres (LPS) benchmark experiments to add these results to the suite of validation problems of MAVRIC/Monaco and TRIPOLI-4$^®$. By the middle of 1971, the LPS experiments measured the neutron emission spectra for 17 isotopic, elemental, and compound spherical targets via time-of-flight techniques. These spherical targets varied in thickness from 0.5 to 5 mean free paths for 14-MeV neutrons. The source in each measurement was 14-MeV neutrons born from deuterium-tritium fusion reactions at the center of each sphere. These neutrons were born at times that resulted in a Gaussian distribution with a mean and full-width-at-half-maximum of 0 and 4 ns, respectively. The time-of-flight measurements were made along two different flight paths, 30° (Pilot B plastic or NE213 liquid scintillator) and 120° (NE213). These angles were measured with respect to the direction of travel of the deuterons.
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  • HAL Id : cea-02339097, version 1

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T.M. Miller, D. Mancusi, E. Le Ménédeu, J.-C. Trama, A. Zoia. Comparison of MAVRIC/Monaco and TRIPOLI-4 Simulations of the LLNL Pulsed Spheres Benchmark Experiments. 20th Topical Meeting of the Radiation Protection and Shielding Division (RPSD 2018), Aug 2018, Santa Fe, United States. ⟨cea-02339097v1⟩

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