GAMOS tutorial Histogram and Scorers Exercises Pedro Arce Dubois CIEMAT http://fismed.ciemat.es/GAMOS Pedro Arce Introducción a GEANT4

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

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

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

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

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

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

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

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

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

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