Geant4 extended examples serve three purposes:
testing and validation of processes and tracking,
demonstration of Geant4 tools, and
extending the functionality of Geant4.
The code for these examples is maintained as part of the categories to which they belong. Links to descriptions of the examples are listed below.
A01 - hit-scoring and histogramming using the AIDA interface
AnaEx01 - histogram and tuple manipulations using Geant4 internal g4tools system
AnaEx02 - histogram and tuple manipulations using ROOT
AnaEx03 - histogram and tuple manipulations using the AIDA interface
N03Con - modified novice example N03 showing how to use a Convergence Tester
ReadMe - a set of common classes which can be reused in other examples demonstrating just a particular feature. This module is going to be enhanced in future.
TestEm0 - how to print cross-sections and stopping power used in input by the standard EM package
TestEm1 - how to count processes, activate/inactivate them and survey the range of charged particles. How to define a maximum step size
TestEm2 - shower development in an homogeneous material : longitudinal and lateral profiles
TestEm3 - shower development in a sampling calorimeter : collect energy deposited, survey energy flow and print stopping power
TestEm4 - 9 MeV point like photon source: plot spectrum of energy deposited in a single media
TestEm5 - how to study transmission, absorption and reflection of particles through a single, thin or thick, layer.
TestEm6 - physics list for rare, high energy, electromagnetic processes: gamma conversion and e+ annihilation into pair of muons
TestEm7 - how to produce a Bragg curve in water phantom. How to compute dose in tallies
TestEm8 - test of photo-absorption-ionisation model in thin absorbers, and transition radiation
TestEm9 - shower development in a crystal calorimeter; cut-per-region
TestEm10 - XTR transition radiation model, investigation of ionisation in thin absorbers
TestEm11 - how to plot a depth dose profile in a rectangular box
TestEm12 - how to plot a depth dose profile in spherical geometry : point like source
TestEm13 - how to compute cross sections of EM processes from rate of transmission coefficient
TestEm14 - how to compute cross sections of EM processes from direct evaluation of the mean-free path. How to plot final state
TestEm15 - compute and plot final state of Multiple Scattering as an isolated process
TestEm16 - simulation of synchrotron radiation
TestEm17 - check the cross sections of high energy muon processes
TestEm18 - energy lost by a charged particle in a single layer, due to ionization and bremsstrahlung
Check basic quantities | |
Total cross sections, mean free paths ... | Em0, Em13, Em14 |
Stopping power, particle range ... | Em0, Em1, Em5, Em11, Em12 |
Final state : energy spectra, angular distributions | Em14 |
Energy loss fluctuations | Em18 |
Multiple Coulomb scattering | |
as an isolated mechanism | Em15 |
as a result of particle transport | Em5 |
More global verifications | |
Single layer: transmission, absorption, reflexion | Em5 |
Bragg curve, tallies | Em7 |
Depth dose distribution | Em11, Em12 |
Shower shapes, Moliere radius | Em2 |
Sampling calorimeters, energy flow | Em3 |
Crystal calorimeters | Em9 |
Other specialized programs | |
High energy muon physics | Em17 |
Other rare, high energy processes | Em6 |
Synchrotron radiation | Em16 |
Transition radiation | Em8 |
Photo-absorption-ionization model | Em10 |
Table 10.6. TestEm by theme
Variance Reduction - examples (B01 and B02) on variance reduction techniques and scoring and application of Reverse MonteCarlo in Geant4 ReverseMC
HepMCEx01 - simplified collider detector using HepMC interface and stacking
HepMCEx02 - connecting primary particles in Geant4 with various event generators using the HepMC interface
MCTruth - demonstrating a mechanism for Monte Carlo truth handling using HepMC as the event record
exgps
- illustrating the usage of the
G4GeneralParticleSource
utility
particleGun
- demonstrating three different ways of usage of G4ParticleGun
,
shooting primary particles in different cases
pythia - illustrating the usage of Pythia as Monte Carlo event generator, interfaced with Geant4, and showing how to implement an external decayer (example decayer6)
BlineTracer - tracing and visualizing magnetic field lines
field01 - tracking using magnetic field and field-dependent processes
field02 - tracking using electric field and field-dependent processes
field03 - tracking in a magnetic field where field associated with selected logical volumes varies
field04 - definition of overlapping fields either magnetic, electric or both
field05 - demonstration of "spin-frozen" condition, how to cancel the muon g-2 precession by applying an electric field
field06 - exercising the new (in 9.5) capability of tracking massive particles in a gravity field
General ReadMe - converting simple geometries in Geant3.21 to their Geant4 equivalents (example clGeometry)
OLAP - debugging tool for overlapping geometries
transforms - demonstrating various ways of definition of 3D transformations for placing volumes
Hadr00 - example demonstrating the usage of G4PhysListFactory to build physics lists and usage of G4HadronicProcessStore to access the cross sections
Hadr01 - example based on the application IION developed for simulation of proton or ion beam interaction with a water target. Different aspects of beam target interaction are included
Hadr02 - example application providing simulation of ion beam interaction with different targets. Hadronic aspects of beam target interaction are demonstrated including longitudinal profile of energy deposition, spectra of secondary particles, isotope production spectra.
Hadr03 - example demonstrating how to compute total cross section from the direct evaluation of the mean free path, how to identify nuclear reactions and how to plot energy spectrum of secondary particles
DICOM - geometry set-up using the Geant4 interface to the DICOM image format
electronScattering - benchmark on electron scattering
electronScattering2 - benchmark on electron scattering (second way to implement the same benchmark as the above)
GammaTherapy - gamma radiation field formation in water phantom by electron beam hitting different targets
fanoCavity - dose deposition in an ionization chamber by a monoenergetic photon beam
fanoCavity2 - dose deposition in an ionization chamber by an extended one-dimensional monoenergetic electron source
Gflash - Demonstrates the use of the GFLASH parameterisation library. It uses the GFLASH equations(hep-ex/0001020, Grindhammer & Peters) to parametrise electromagnetic showers in matter
GDML - examples set (G01, G02, G03 and G04) illustrating import and export of a detector geometry with GDML, and how to extend the GDML schema or use the auxiliary information field for defining additional persistent properties
P01 - storing calorimeter hits using reflection mechanism with Root
P02 - storing detector description using reflection mechanism with Root
P03 - illustrating import and export of a detector geometry using ASCII text description and syntax
RE01 - information between primary particles and hits and usage of user-information classes
RE02 - simplified fixed target application for demonstration of primitive scorers
RE03 - use of UI-command based scoring; showing how to create parallel world(s) for defining scoring mesh(es)
RE04 - demonstrating how to define a layered mass geometry in parallel world
General ReadMe - examples (perspective, standalone and userVisAction) of customisation for visualization