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MarsREM Requirements for Nuclear-Nuclear PhysicsPowerPoint Presentation

MarsREM Requirements for Nuclear-Nuclear Physics

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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
- 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

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 Al, Cu, Sn, Au and Pb (158 GeV/A) 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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