Benchmarking Geant4 for spallation neutron source calculations

DiJulio, Douglas D.; Batkov, K. E.; Stenander, John; Cherkashyna, Nataliia; Bentley, Phillip M.

doi:10.1088/1742-6596/746/1/012032

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…3. While MCNPX was used for the baseline design and target optimization of the ESS [36,44], recent comparisons with GEANT4 qualify the latter as a comparable tool, at least from the point of view of neutron production and transport [45]. Fig.…”

Section: The Ess As a Neutrino Source: Comparison To The Snsmentioning

confidence: 99%

Coherent elastic neutrino-nucleus scattering at the European Spallation Source

Baxter

Collar

Coloma

et al. 2020

J. High Energ. Phys.

125

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The European Spallation Source (ESS), presently well on its way to completion, will soon provide the most intense neutron beams for multi-disciplinary science. Fortuitously, it will also generate the largest pulsed neutrino flux suitable for the detection of Coherent Elastic Neutrino-Nucleus Scattering (CEνNS), a process recently measured for the first time at ORNL's Spallation Neutron Source. We describe innovative detector technologies maximally able to profit from the order-ofmagnitude increase in neutrino flux provided by the ESS, along with their sensitivity to a rich particle physics phenomenology accessible through high-statistics, precision CEνNS measurements.

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Section: The Ess As a Neutrino Source: Comparison To The Snsmentioning

confidence: 99%

Coherent elastic neutrino-nucleus scattering at the European Spallation Source

Baxter

Collar

Coloma

et al. 2020

J. High Energ. Phys.

125

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“…To investigate the potential for using such a concrete at a spallation neutron source, we carried out simulations of the performance of the concrete over the entire relevant energy range. For these purposes, we used an incident energy spectrum from a Geant4 [20,21] model based on the technical-design-report concept of the ESS [22]. This spectrum represents the total number of neutrons c 2017.…”

Section: Performance At a Spallation Neutron Sourcementioning

confidence: 99%

A polyethylene-B 4 C based concrete for enhanced neutron shielding at neutron research facilities

DiJulio

Cooper-Jensen

Perrey

et al. 2017

Nuclear Instruments and Methods in Physics Research Section A:

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We present the development of a specialized concrete for neutron shielding at neutron research facilities, based on the addition of hydrogen atoms in the form of polyethylene and also B 4 C for enhancing the neutron capture properties of the concrete. We show information on the mechanical properties of the concrete and the neutronics, in particular it's relevance to modern spallation neutron sources, such as the European Spallation Source (ESS), currently under construction in Lund, Sweden. The new concrete exhibits a 15% lower mass density, a compressible strength of 50% relative to a standard concrete and a significant increase in performance of shielding against MeV neutrons and lower energies. The concrete could find application at the ESS in for example common shielding components, individual beamline shielding and instrument caves.Initial neutronic tests of the concrete, carried out at Lund University, have also verified the performance in the MeV neutron energy range and the results are presented.

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“…There has however been a recent push towards enhancing the low-energy neutron transport features of Geant4, driven largely by developments in neutron detector design [20,21]. This has resulted in an increased interest in understanding the suitability of Geant4 for neutron optics and shielding calculations at ESS [22][23][24][25][26][27]. Another reason why it is interesting to explore the suitability of Geant4 for these types of calculations is that the software is freely available online and open source.…”

Section: Introductionmentioning

confidence: 99%

Simulating neutron transport in long beamlines at a spallation neutron source using Geant4

DiJulio

Svensson

Cai

et al. 2020

JNR

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The transport of neutrons in long beamlines at spallation neutron sources presents a unique challenge for Monte-Carlo transport calculations. This is due to the need to accurately model the deep-penetration of high-energy neutrons through meters of thick dense shields close to the source and at the same time to model the transport of low-energy neutrons across distances up to around 150 m in length. Typically, such types of calculations may be carried out with MCNP-based codes or alternatively PHITS. However, in recent years there has been an increased interest in the suitability of Geant4 for such types of calculations. Therefore, we have implemented supermirror physics, a neutron chopper module and the duct-source variance reduction technique for low-energy neutron transport from the PHITS Monte-Carlo code into Geant4. In the current work, we present a series of benchmarks of these extensions with the PHITS software, which demonstrates the suitability of Geant4 for simulating long neutron beamlines at a spallation neutron source, such as the European Spallation Source, currently under construction in Lund, Sweden.

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Benchmarking Geant4 for spallation neutron source calculations

Cited by 6 publications

References 11 publications

Coherent elastic neutrino-nucleus scattering at the European Spallation Source

Coherent elastic neutrino-nucleus scattering at the European Spallation Source

A polyethylene-B 4 C based concrete for enhanced neutron shielding at neutron research facilities

Simulating neutron transport in long beamlines at a spallation neutron source using Geant4

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