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Simulating neutron ...
Simulating neutron transport in long beamlines at a spallation neutron source using Geant4
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- Dijulio, Douglas D. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,European Spallation Source ESS AB
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- Svensson, Isak (author)
- European Spallation Source ESS AB
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- Cai, Xiao Xiao (author)
- Technical University of Denmark,European Spallation Source ESS AB
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- Cederkall, Joakim (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Bentley, Phillip M. (author)
- European Spallation Source ESS AB
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(creator_code:org_t)
- 2020
- 2020
- English 7 s.
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In: Journal of Neutron Research. - 1023-8166. ; 22:2-3, s. 183-189
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http://dx.doi.org/10...
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Abstract
Subject headings
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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.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
Keyword
- Geant4
- neutron supermirror
- PHITS
- Spallation Source
Publication and Content Type
- art (subject category)
- ref (subject category)
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