Implementation of Neutron Mirror Modeling Capability into MCNPX and Its Demonstration in First Applications

Gallmeier, Franz X.; Wohlmuther, M.; Filges, Uwe; Kiselev, D.; Muhrer, G.

doi:10.13182/nt09-a9304

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…The SSW/SSR and Compile approaches are developed in MCNPX release 2.7 and to allow for direct comparison the existing Supermirror approach [8] was ported to the same release.…”

Section: Interface Validation Resultsmentioning

confidence: 99%

“…Similar to the Compile option, the Supermirror option is based on modifying the MCNPX source code [8,9]. In this case, however, the idea is not to launch a McStas simulation from within MCNP, but rather to extend MCNPX, with functionality inspired from McStas.…”

Section: Supermirror Optionmentioning

confidence: 99%

“…The introduction of supermirrors in MCNPX [8] has already proved very useful, and numerous simulations performed over the last years are based hereupon. Our goal is that the combination of MCNPX and McStas will extent the usability and become a new standard for detailed simulation of cold/thermal neutron moderators.…”

Section: Prospectsmentioning

confidence: 99%

See 2 more Smart Citations

Interfacing MCNPX and McStas for simulation of neutron transport

Klinkby

Lauritzen

Nonbøl

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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“…The SSW/SSR and Compile approaches are developed in MCNPX release 2.7 and to allow for direct comparison the existing Supermirror approach [8] was ported to the same release.…”

Section: Interface Validation Resultsmentioning

confidence: 99%

Section: Supermirror Optionmentioning

confidence: 99%

See 1 more Smart Citation

Interfacing MCNPX and McStas for simulation of neutron transport

Klinkby

Lauritzen

Nonbøl

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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“…This version has a neutron mirror guide option, permitting the thermal and cold neutron transport in the neutron guides to be adequately modeled [4].…”

Section: Monte Carlo Analysesmentioning

confidence: 99%

Shielding analyses for VISION beam line at SNS

Popova

Gallmeier²

2014

Progress in Nuclear Science and Technology

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Full-scale neutron and gamma transport analyses were performed to design shielding for the VISION beam line, the instrument cave, the beam stop, and the secondary shutter. The design goal is to achieve dose rates below 0.25 mrem/h at 30 cm from the shielding surfaces in generally occupiable areas. The secondary shutter analyses were performed with the discrete ordinate code DORT in addition to Monte Carlo analyses with the MCNPX code. Results from the shielding analyses are presented.

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“…Currently, the Particle and Heavy Ion Transport code System (PHITS [2]) does come packaged with this feature while other popular codes such as the Monte-Carlo N-Particle Transport (MCNP) family of codes [3], the Geant4 Toolkit [4,5], and FLUKA [6] do not. This deficiency has been addressed in a number of different ways, which include for example patched versions of MCNPX [7,8] and MCNP6 [9,10] or interfacing with neutron-ray tracing software such as McStas [11,12] or Vitess [13,14] using specialized tools [15][16][17][18][19]. In addition, the PHITS software also includes a powerful technique for enhancing the efficiency of the supermirror transport, referred to as the duct-source method.…”

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.

show abstract

Implementation of Neutron Mirror Modeling Capability into MCNPX and Its Demonstration in First Applications

Cited by 14 publications

References 6 publications

Interfacing MCNPX and McStas for simulation of neutron transport

Interfacing MCNPX and McStas for simulation of neutron transport

Shielding analyses for VISION beam line at SNS

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

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