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Application of automated weight windows to spallation neutron source shielding calculations using Geant4

Stenander, John and DiJulio, Douglas LU (2015) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 798. p.167-171
Abstract
We present an implementation of a general weight window generator for global variance reduction in Geant4 based applications. The implementation is flexible and can be easily adjusted to a user-defined model. In this work, the weight-window generator was applied to calculations based on an instrument shielding model of the European Spallation Source, which is currently under construction in Lund, Sweden. The results and performance of the implemented methods were evaluated through the definition of two figures of merit. It was found that the biased simulations showed an overall improvement in performance compared to the unbiased simulations. The present work demonstrates both the suitability of the generator method and Geant4 for these... (More)
We present an implementation of a general weight window generator for global variance reduction in Geant4 based applications. The implementation is flexible and can be easily adjusted to a user-defined model. In this work, the weight-window generator was applied to calculations based on an instrument shielding model of the European Spallation Source, which is currently under construction in Lund, Sweden. The results and performance of the implemented methods were evaluated through the definition of two figures of merit. It was found that the biased simulations showed an overall improvement in performance compared to the unbiased simulations. The present work demonstrates both the suitability of the generator method and Geant4 for these types of calculations. (C) 2015 Elsevier By. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Global variance reduction, Spoliation neutron source, Geant4
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
798
pages
167 - 171
publisher
Elsevier
external identifiers
  • wos:000360933600024
  • scopus:84939204108
ISSN
0167-5087
DOI
10.1016/j.nima.2015.07.037
language
English
LU publication?
yes
id
29ec0639-c1fe-4874-83a2-49587ec359c1 (old id 8074284)
date added to LUP
2015-10-23 09:27:52
date last changed
2017-02-12 03:40:57
@article{29ec0639-c1fe-4874-83a2-49587ec359c1,
  abstract     = {We present an implementation of a general weight window generator for global variance reduction in Geant4 based applications. The implementation is flexible and can be easily adjusted to a user-defined model. In this work, the weight-window generator was applied to calculations based on an instrument shielding model of the European Spallation Source, which is currently under construction in Lund, Sweden. The results and performance of the implemented methods were evaluated through the definition of two figures of merit. It was found that the biased simulations showed an overall improvement in performance compared to the unbiased simulations. The present work demonstrates both the suitability of the generator method and Geant4 for these types of calculations. (C) 2015 Elsevier By. All rights reserved.},
  author       = {Stenander, John and DiJulio, Douglas},
  issn         = {0167-5087},
  keyword      = {Global variance reduction,Spoliation neutron source,Geant4},
  language     = {eng},
  pages        = {167--171},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {Application of automated weight windows to spallation neutron source shielding calculations using Geant4},
  url          = {http://dx.doi.org/10.1016/j.nima.2015.07.037},
  volume       = {798},
  year         = {2015},
}