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.
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
B1Con - modified basic example B1 showing how to use a Convergence Tester
[A01] - this examples has been refactored in Example B5 in the basic set.
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.
Generic biasing examples illustrate the usage of a biasing scheme implemented since version Geant4 10.0.
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|
|Other specialized programs|
|High energy muon physics||Em17|
|Other rare, high energy processes||Em6|
Table 10.4. TestEm by theme
ReadMe - error propagation utility
exgps - illustrating the usage of the
particleGun - demonstrating three different ways of usage of
G4ParticleGun, shooting primary particles in different cases
userPrimaryGenerator - demonstrating how to create a primary event including several vertices and several primary particles per vertex
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
Channeling - simulates channeling of 400 GeV/c protons in a bent crystal.
Monopole - illustrating how to measure energy deposition in classical magnetic monopole
Phonon - demonstrates simulation of phonon propagation in cryogenic crystals
UCN - simulates the passage of ultra-cold neutrons (UCN) in a hollow pipe.
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 capability of tracking massive particles in a gravity field
General ReadMe - converting simple geometries in Geant3.21 to their Geant4 equivalents (example clGeometry)
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
Hadr04 - example focused on neutronHP physics, especially neutron transport, including thermal scattering
Hadr05 - demonstrates the usage of G4GenericPhysicsList to build the concrete physics list at the run time
Hadr06 - demonstrates survey of energy deposition and particle's flux from a hadronic cascade
FissionFragment - This example demonstrates the Fission Fragment model as used within the neutron_hp model. It will demostrate the capability for fission product containmentby the cladding in a water moderated sub-critical assembly. It could also be further extended to calculate the effective multiplication factor of the subcritical assembly for various loading schemes.
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)
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
GammaTherapy - gamma radiation field formation in water phantom by electron beam hitting different targets
dna - Set of examples using the Geant4-DNA physics processes and models.
dnaphysics - The dnaphysics example shows how to simulate track structures in liquid water using the Geant4-DNA physics processes and models.
microdosimetry - The microdosimetry example simulates the track of a 5 MeV proton in liquid water. Geant4 standard EM models are used in the World volume while Geant4-DNA models are used in a Target volume, declared as a Region.
svalue - This example shows how to simulate S-values in spheres of liquid water using the Geant4-DNA physics processes and models.
wvalue - This example shows how to simulate W-values in liquid water using the Geant4-DNA physics processes and models.
chem1 - Simple activation of the chemistry module.
chem2 - Usage of TimeStepAction in the chemistry module.
chem3 - Activate the full interactivity with the chemistry module.
wholeNuclearDNA - Description of the full nucleus of a biological cell.
pdb4dna - Usage of the Protein Data Bank (PDB) file format to build geometries.
OpNovice - simulation of optical photons generation and transport. (It was moved in extended examples from novice/N06 with removal of novice examples.)
LXe - optical photons in a liquid xenon scintillator
WLS - application simulating the propagation of photons inside a Wave Length Shifting (WLS) fiber
MPI - interface and examples of applications (exMPI01, exMPI02 and exMPI03) parallelized with different MPI compliant libraries, such as LAM/MPI, MPICH2, OpenMPI, etc.
TBB - demonstrate how to interface a simple application with the Intel Threading Building Blocks library (TBB), and organise MT event-level parallelism as TBB tasks
ThreadsafeScorers - demonstrates a very simple application where an energy deposit and # of steps is accounted in thread-local (i.e. one instance per thread) hits maps with underlying types of plain-old data (POD) and global (i.e. one instance) hits maps with underlying types of atomics.
Par01 - Demonstrates the use of parameterisation facilities. (It was moved in extended examples from novice/N05 with removal of novice examples.)
Par02 - Shows how to do "track and energy smearing" in Geant4, in order to have a very fast simulation based on assumed detector resolutions.
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
Pol01 - interaction of polarized beam (e.g. circularly polarized photons) with polarized target
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
RE05 - demonstrating interfacing to the PYTHIA primary generator, definition of a 'readout' geometry, event filtering using the stacking mechanism. (It was moved in extended examples from novice/N04 with removal of novice examples.)
RE06 - demonstrating how to modify part of the geometry setup at run-time, detector description parameterisation by materials, sharing of a sensitive detector definition for different sub-detectors, different geometrical regions definition with different production thresholds, customization of the G4Run (It was moved in extended examples from novice/N07 with removal of novice examples.)
General ReadMe - examples (perspective, standalone and userVisAction) of customisation for visualization