1. GAMOS tutorial Histogram and Scorers Exercises
Pedro Arce Dubois
CIEMAT
Pedro Arce
Introducción a GEANT4

2. Histograms and scorers Exercises
Ex. 0: Basic example
Ex. 1: Simple histograms with a detector
Ex. 1a: Histograms of generator particles
Ex. 1b: Usage of filters and classifiers
Ex. 1c. Usage of history filters
Ex. 2: Histograms with two detectors
Usage of physical volumes and touchables
Ex. 3: Scorers (flux, dose deposit, energy deposit, …)
Ex. 4: Scorers with parallel 3D mesh
Pedro Arce
Introducción a GEANT4

3. Exercise 0a: simple geometry
Tube of radius 100cm length 200cm of Water, axis along X
Inside a Box 30cm X 30cm X 40cm of Aluminun
Primary particle: gamma 10 MeV at (0,0,0) in random direction
Pedro Arce
Introducción a GEANT4

4. Exercise 0b: visualisation
Visualize geometry and tracks
Use OGLIX
Use VRML2FILE
Pedro Arce
Introducción a GEANT4

5. Exercise 0c: use different e.m. physics
Use standard electromagnetic physics
Use Penelope physics
Make statistics on processes/particles in each case
Pedro Arce
Introducción a GEANT4

6. Exercise 1a: Histograms of generator particles
Geometry:
Detector: tube of radius 10 mm length 20 mm of silicon, axis along Z
inside container box 11 mm X 11 mm X 11 mm of Aluminun
Source container: tube of radius 1 mm length 5 mm of water, axis along Z
Place source and detector container separated 1 cm in X
Standard electromagnetic physics
Primary particle: gamma 1 MeV uniformly distributed in source container
Get histogram of energy, position and angle of primary generator particles
Pedro Arce
Introducción a GEANT4

7. Exercise 1b: Usage of filters and classifiers
Make histogram of dose deposited in detector
Make histogram of energy lost by gammas and electrons in each volume
Make histogram of energy when a gamma or electron enters the detector
Pedro Arce
Introducción a GEANT4

8. Exercise 1c: Usage of history filters
Make histogram of total energy lost by primary gammas
Make histogram of energy when a primary gamma enters the detector when it has not suffered a Compton interaction previously
Make histogram of how much the primary gammas are deviated by Compton interactions
Pedro Arce
Introducción a GEANT4

9. Exercise 2: Histograms with two detectors
Geometry:
Place another detector + container separated 5 mm in Y from the first one
Make histogram of energy deposited in container 1 and container 2
Make histogram of energy deposited in detector 1 and detector 2
Make histogram of energy only of primary gammas that enter detector 2
Pedro Arce
Introducción a GEANT4

10. Geometry: use the one of exercise 2
Exercise 3: Scorers
Geometry: use the one of exercise 2
Score flux entering containers 1 and 2
Score energy and dose deposition in detectors 1 and 2
Score average number of collisions of primary gammas for each collision type, in each type of volume
Pedro Arce
Introducción a GEANT4

11. Exercise 4: Scorers with parallel 3D mesh
Geometry: use the one of exercise 1
Define mesh 1x1x1 mm covering detector 1 and score dose deposition in each voxel, only if voxel is in detector
Make dose histograms one and bidimensional and dose-volume histogra
Pedro Arce
Introducción a GEANT4