Benchmarking of evaluated nuclear data for uranium by a 14.8MeV neutron leakage spectra experiment with slab sample

“…In order to validate currently available nuclear data files for iron, the leakage neutron spectra from iron slabs were measured and calculated at CIAE by using the integral benchmark facility, which has been successfully used in a series of benchmark experiments [7][8][9][10]. The leakage neutron spectra from iron slabs were measured between 0.8 MeV and 15 MeV at emission angles of 60• and 120• using TOF method with a BC501A scintillation detector.…”

Section: Introductionmentioning

confidence: 99%

Benchmark experiment with iron slab by Time-of-flight technique at CIAE

et al. 2020

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In order to validate the evaluated nuclear data, leakage spectra in the range of 0.8 to 15 MeV from samples were measured by time-of-flight (TOF) technique using a D-T neutron source. An experimental system for benchmark validation of nuclear data with slab samples has been set up at China Institute of Atomic Energy (CIAE). In this study, test samples are iron slabs, of which the thickness are 5cm, 10cm and 15cm, and the measured angles were chosen to be about 60° and 120°. By comparing measured leakage spectrum with calculated ones by MCNP-4C code, using the data from the CENDL-3.1, ENDF/B-VIII.0, JENDL-4.0 and JEFF-3.3 nuclear data files, and the comparison was made by the spectrum shape and by the C/E values in different energy regions.

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“…So the neutronics study and benchmarking of the evaluated nuclear data libraries are necessary. The benchmarking experiment has been performed at China Institute of Atomic Energy (CIAE) since 2009 [5]. The validity of the benchmarking test system has been examined.…”

Section: Introductionmentioning

confidence: 99%

Measurement of leakage neutron spectra with D-T neutrons and evaluated nuclear data

et al. 2020

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Benchmarking of evaluated neutron nuclear data libraries was performed for ∼14.8 MeV neutrons on the several targets, such as gallium, graphite, silicon carbide, uranium and tungsten samples. The experiments were performed at China Institute of Atomic Energy (CIAE). The neutron leakage spectra from the samples were measured at 60◦ and 120◦ by a TOF technique with a BC501A scintillation detector. The measured spectra are rather well reproduced by MCNP-4C simulations with the CENDL3.1, JENDL-4.0 and the new release ENDF/B-VIII.0, JEFF-3.3 evaluated nuclear data libraries and so on. There have some difference between experiments and simulations for the elastic and inelastic contributions in the partial energy range. And the discrepancies of the neutron leakage spectra in the MCNP simulations originate simply from the differences in the spectra distributions of the neutron reaction channels in the evaluated nuclear data libraries.

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Benchmarking of evaluated nuclear data for uranium by a 14.8MeV neutron leakage spectra experiment with slab sample

Cited by 21 publications

References 8 publications

Recent progress in nuclear data measurement for ADS

Recent progress in nuclear data measurement for ADS

Benchmark experiment with iron slab by Time-of-flight technique at CIAE

Measurement of leakage neutron spectra with D-T neutrons and evaluated nuclear data

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