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DIPIA – ISPESL e Gruppo Collegato Sanità INFN (Roma)

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Presentation on theme: "DIPIA – ISPESL e Gruppo Collegato Sanità INFN (Roma)"— Presentation transcript:

1 DIPIA – ISPESL e Gruppo Collegato Sanità INFN (Roma)
Practice GEANT4 - ML2 Dr. C. Andenna DIPIA – ISPESL e Gruppo Collegato Sanità INFN (Roma) Geant4 School, October 2009, Catania Italy

2 Some aspects of the program
/primaryParticleData/idParticleSource 1 switch (this->idCurrentParticleSource) { case idParticleSource_Random: this->GenerateFromRandom(); break; case idParticleSource_CalculatedPhaseSpace: this->GenerateFromCalculatedPhaseSpace(); } Geant4 School, October 2009, Catania Italy

3 Some aspects of the program
/primaryParticleData/idParticleSource 2 switch (this->idCurrentParticleSource) { case idParticleSource_Random: this->GenerateFromRandom(); break; case idParticleSource_CalculatedPhaseSpace: this->GenerateFromCalculatedPhaseSpace(); } Geant4 School, October 2009, Catania Italy

4 Some aspects of the program
Dose calculation and its standard deviation In each voxel: Geant4 School, October 2009, Catania Italy

5 Some aspects of the program
Dose calculation: G4double depEnergy= aStep->GetTotalEnergyDeposit(); voxelMass=density*voxels.halfSize.X*voxels.halfSize.Y*voxels.halfSize.Z; dose=depEnergy/voxelMass; Voxels.nEvents++; voxels.depEnergy+=dose; voxels.depEnergy2+=dose*dose; Geant4 School, October 2009, Catania Italy

6 An overview of the results
Content An overview of the results Phase space data Phantom voxelization Comparison between experimental and calculated doses Graphical view Geant4 School, October 2009, Catania Italy

7 Phase space data Type of data saved 18.57 45.06 -831 0.03934 0.095413
n X [mm] Y [mm] Z [mm] dx dy dz kinEnergy [MeV] Part Type Prim part type Prim part 18.57 45.06 -831 22 11 33 1 57.61 27.74 71 Geant4 School, October 2009, Catania Italy

8 Phantom voxelization Type of data saved .... .. ... Phys Volume X [mm]
Y [mm] Z [mm] ix iy iz Dose [Gy] Dose^2 [Gy^2] nEvents fullWaterPhantomPV -297 -177 27 1.78e-09 1.36e-18 9 .... .. ... Geant4 School, October 2009, Catania Italy

9 Experimental vs Calculated data
Type of data saved % 6 MeV Tutte le misure gaf 10 luglio 2009 campo 3x3 n208=2; fh208=[ e+07 e+07 ]; % x [mm], y [mm], z [mm], expDose [Gy], Calculated dose [Gy], Calculated dose2 [Gy^2], nEvents, normDose [Gy], normDoseError [Gy] d208=[ e e e e e e …. Geant4 School, October 2009, Catania Italy

10 Graphical view Dedicated programs have to be used to generate the wanted graphs We use matlab programs Geant4 School, October 2009, Catania Italy

11 Graphical view: examples
Comparison between calculated and measured data Geant4 School, October 2009, Catania Italy

12 Graphical view: 3D Two examples of a section of the ROG
Geant4 School, October 2009, Catania Italy

13 Should you have any question, do not hesitate to contact us
Thank you ! Should you have any question, do not hesitate to contact us


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