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MarsREM Requirements for Nuclear-Nuclear Physics. Pete Truscott & Fan Lei. WP1 Assessment, development and validation of Monte Carlo radiation transport models. Baseline Requirements Document generated and distributed (outlined previously at G4 Space Users Workshop) QinetiQ/S&DU/Space/0602287

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wp1 assessment development and validation of monte carlo radiation transport models
WP1 Assessment, development and validation of Monte Carlo radiation transport models
  • Baseline Requirements Document generated and distributed (outlined previously at G4 Space Users Workshop) QinetiQ/S&DU/Space/0602287
    • Lists the requirements from the perspective of incident particle species, energies, target nuclei as a function of application of the models
  • Key requirement considered to address >5GeV/nuc to 100’s GeV/nuc nuclear-nuclear interactions, including full treatment of nuclear fragments
  • Review also conducted of published data about the models, such as BME, LAQGSM, DPMJET2.5, DPMJET3, :
    • G4 Space Users Workshop presentation shows some of the initial work: http://geant4.slac.stanford.edu/Space06/presentations/01_Monday/07-Truscott_nuclear-nuclear.ppt
  • Focusing on the development of a G4 interface for DPMJET2.5 (5GeV/nuc to 1000 TeV/nuc)
  • QQ access to PHITS also highly desirable in order to compare performance
  • Draft Technical Specification and Interface Control Document QinetiQ/S&DU/Space/0700180/0.a
slide3

Comparison measured and FLUKA-predicted yields from Pb on C, Al, Cu, Sn, Au and Pb (158 GeV/A)

DPMJET-III Expt

How different are DPMJET-2.5 and DPMJET-3?

Comparisons from Ballarini et al www.fluka.org

wp1 dpmjet 2 5 dpmjet 3
WP1 DPMJET-2.5 & DPMJET-3
  • Differences observed in output from DPMJET 2.5 and DPMJET-3, based on FLUKA simulations
    • Little difference (within statistics) to 2x
    • Instances where difference is 6x
    • Is the level of difference correlated with energy (158 GeV/nuc for many cases where agreement if good)?
  • QinetiQ talking with Stefan Roesler who controls distribution of DPMJET-3 code, but we first need to assess how much effort may be require from him co-workers
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