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Question Re: In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation? 

Forum: Physics List
Re: Question In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation? (Balaji S)
Re: Idea Re: In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation? (Vladimir Ivanchenko)
Date: Feb 10, 19:38
From: Balaji S <Balaji S>

Thank you for kind reply sir and sorry for the late response

I am already used “/process/msc” UI commands in my program. But the result almost the same for proton simulation. (for Step limit type, Range factor, Geom Factor, dRoverRange, Final Range)

/process/eLoss/StepFunction 0.1 0.02 mm

/run/physicsModified

My problem: The small field proton simulation the PDD & total Fluence results showing differences in dose entrance. Before I am used Geant4 10.02.p02 and G4EmStandardPhysics_option4, I got a good result for a small field. But the new version of Geant4 10.04.p02 and G4EmStandardPhysics_option4, shown the wrong result for a small field. So, how to slow this problem? please help me... thank you...

I am attached PDF file for Geant4 10.04.p02 & option4 results. I mentioned the error part of the result.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2019/02/10/19.30-96189-Geant4.pdf

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1 None: Re: In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation?   (Daren Sawkey - Feb 18, 11:54)
(_ Question: Re: In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation?   (Balaji S - Feb 19, 22:51)
(_ None: Re: In Geant4 simulation, how to modify the physics & MSC parameters for proton simulation?   (Daren Sawkey - Feb 22, 14:09)
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