|Message: Re: How to get SOBP output with Hadrontherapy example||Not Logged In (login)|
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On Mon, 05 Apr 2010 06:24:15 GMT, Jongseok wrote:
> Oh I didn't change material. > > However, I can't find the name of PMMA in the BookforAppliDev.pdf > > ex) AIR -> G4_AIR > > Please let me know that name. > > Also, I'm confused that you mean Range shifter or Modulator wheel. > > Which material of element should I change? > > I found a command in modulatorMacro.mac > > /beamLine/RangeShifter/RSMat Air > > Does it mean changing of material of Range shifter to air? > > Should I change air to PMMA? >
1. to change the material give a look into the PassiveProtonBeamLine where a PMMA is defined. 2. Range shifter has a different role (decrease the beam energy) as respect the modulator (make an energy modulation of the beam).
If you want an energy modulation of the beam, you only need a *modulator* of PMMA
I'd like to suggest you to carefully read the Hadrontherapy README (http://geant4advancedexampleswg.wikispaces.com/ExamplesDocumentation) where a lot of your issues are already explained.
Moreover accurately study the PassiveProtonBeamLine class file, the Modulator class file and the modulator macro where comments will help you to understand many aspects of the program.
Regards, Pablo Cirrone
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