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Forum: Medical Applications
Re: Question Cut influence in Gate/Geant4 for a 230 MeV proton beam (Loc Grevillot)
Re: Idea Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam (Vladimir Ivanchenko)
Re: None Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam (Loc Grevillot)
Re: Idea Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam (Vladimir Ivanchenko)
Date: 14 Apr, 2009
From: Loc Grevillot <Loc Grevillot>

I tried $G4INSTALL/examples/extended/electromagnetic/TestEm7 with 2 cut values: 1mm and 0.1mm.

I also obtained a 6 mm range shifting, except with EM-opt-3 (0.3mm shift).

This is due to the option "opt.SetDEDXBinning(220)" and not because of the maximum step size, as I thought before.

I tried "opt.SetDEDXBinning(100)" and it gives me a 3 mm shift

I tried "opt.SetDEDXBinning(150)" and it gives me a 0.7 mm shift

I tried "opt.SetDEDXBinning(190)" and it gives me a 0.3 mm shift

What is the defaut value of DEDXBinning?

What is the SetLambdaBinning option and Lamda? ...

I also saw other options, but I didn't find any help in the physics reference manual. Does-it exist some explanations somewhere?

I would like to understand exactly the consequences of these options and how it works.

Thanks again for your help.

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1 Idea: Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam   (Vladimir Ivanchenko - 14 Apr, 2009)
(_ None: Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam   (Loc Grevillot - 15 Apr, 2009)
(_ None: Re: Cut influence in Gate/Geant4 for a 230 MeV proton beam   (Loc Grevillot - 15 Apr, 2009)
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