Electromagnetic Standard Physics Working Group

Purpose

The electromagnetic (EM) physics working group develops and maintains Geant4 sub-packages for simulation of electromagnetic interactions of charged particles, gammas and optical photons. The validity range of models is from 1 keV to 10 PeV. The physics approaches are optimal for high and medium energy applications and the set of these sub-packages is frequently called "Geant4 Standard EM Physics". The group is maintaining also components for reference Physics Lists and a number of extended examples.

Members

John Apostolakis (CERN, Geneva, Switzerland) - design assessment, performance
Alexander Bagulya (Lebedev, Physics Institute, Moscow, Russia) - validation, ionisation
Alexey Bogdanov (MEPhI, Moscow, Russia) - muons
Helmut Burkhardt (CERN, Geneva, Switzerland) - rare processes, applications for CLIC
Sabine Elles (LAPP, Annecy, France) - validation
Vladimir Grichine (CERN; Lebedev Physics Institute, Moscow, Russia) - xrays, gaseous detectors
Peter Gumplinger (TRIUMF, Vancouver, Canada) - optical, xrays, SB member
Vladimir Ivanchenko (CERN; EMSU, Russia) - coordinator, SB member
Jean Jacquemier (LAPP, Annecy, France) - validation
Omrane Kadri (King Saud University, Saudi Arabia) - multiple scattering, validation
Michel Maire (LAPP, Annecy, France) - deputy, SB member
Daren Sawkey (Varian Medical Systems, Palo Alto, USA) - validation, electrons
Andreas Schaelicke (Berlin, Germany) - polarisation, bremsstrahlung
Toshiyuki Toshito (Health and Welfare Bureau, Nagoya, Japan) - ions, validation
Laszlo Urban (G4AI, Budapest, Hungary) - standard processes
Tomohiro Yamashita (HIBMC, Hyogo, Japan) - validation

Suspended Geant4 and Standard Electromagnetic Physics group members

Rostislav Kokoulin (MEPhI, Moscow, Russia)

Collaborators developing polarized processes (not Geant4 members)

Collaborators developing Coulomb scattering models (not Geant4 members)

Sub-packages and processes

Sub-directory	Process or user interface	SubType	Comment
electromagnetic/highenergy	G4AnnihiToMuPair	4	positron annihilation to muon pair
electromagnetic/highenergy	G4GammaConversionToMuons	5	gamma conversion to muon pair
electromagnetic/highenergy	G4eeToHadrons	4	positron annihilation to hadrons
electromagnetic/highenergy	G4hhIonisation	2	heavy particle ionisation
electromagnetic/highenergy	G4mplIonisation	2	classical magnetic monopole ionisation
electromagnetic/muons	G4MuBremsstrahlung	3	muon bremsstrahlung
electromagnetic/muons	G4MuIonisation	2	muon ionisation
electromagnetic/muons	G4MuMultipleScattering	1	multiple scattering for muons
electromagnetic/muons	G4MuPairProduction	8	e+e- pair production by muon
electromagnetic/polarisation	G4PolarizedCompton	6	Compton scattering with circular polarization
electromagnetic/polarisation	G4PolarizedGammaConversion	5	conversion of circular polarized gamma
electromagnetic/polarisation	G4PolarizedPhotoElectricEffect	7	photo-electric effect for circular polarized gamma
electromagnetic/polarisation	G4ePolarizedBremsstrahlung	3	bremsstrahlung of circular polarized e+ and e-
electromagnetic/polarisation	G4ePolarizedIonisation	2	ionisation of circular polarized e+ and e-
electromagnetic/polarisation	G4eplusPolarizedAnnihilation	4	annihilation of circular polarized positrons
electromagnetic/standard	G4ComptonScattering	6	Compton scattering process
electromagnetic/standard	G4CoulombScattering	1	single Coulomb scattering
electromagnetic/standard	G4GammaConversion	5	gamma conversion to e+e- pair
electromagnetic/standard	G4NuclearStopping	8	nuclear stopping of ions
electromagnetic/standard	G4PhotoElectricEffect	7	photo-electric effect
electromagnetic/standard	G4PolarizedComptonScattering	6	Compton scattering of linear polarized gamma
electromagnetic/standard	G4eBremsstrahlung	3	electron and positron bremsstrahlung
electromagnetic/standard	G4eIonisation	2	electron and positron ionisation
electromagnetic/standard	G4eMultipleScattering	10	electron and positron multiple scattering
electromagnetic/standard	G4ionIonisation	2	ionisation of ions with charge +2 and more
electromagnetic/standard	G4hIonisation	2	ionisation of hadrons
electromagnetic/standard	G4hMultipleScattering	10	multiple scattering of heavy changed particles
electromagnetic/xrays	G4Cerenkov	21	Cerenkov radiation
electromagnetic/xrays	G4Scintillation	22	scintillation process
electromagnetic/xrays	G4SynchrotronRadiation	23	classical synchrotron radiation
electromagnetic/xrays	G4SynchrotronRadiationInMat	23	synchrotron radiation in media
electromagnetic/xrays	G4TransitionRadiation	24	transition radiation process
optical	G4OpAbsorption	31	absorption of optical photons
optical	G4OpBoundaryProcess	32	general boundary process for optical photons
optical	G4OpRayleigh	33	Rayleigh scattering of optical photons
examples/extended/electromagnetic/TestEm7	G4ScreenedNuclearRecoil	1	single scattering for ions

Helper classes

Sub-directory	Process or user interface	Comment
electromagnetic/muons	G4EnergyLossForExtrapolator	Class for computation of energy loss and fluctuations
electromagnetic/utils	G4EmCalculator	interface to dE/dx and cross sections
electromagnetic/utils	G4EmConfigurator	adding models to Physics List
electromagnetic/utils	G4EmProcessOptions	C++ interface to Standard package options
electromagnetic/utils	G4EmSaturation	Computation of energy loss saturation (Birks effect)
materials	G4NistManager	Access to Geaant4 NIST DB and atomic properties