#include <TG4Trajectory.h>

Inheritance diagram for TG4TrajectoryPoint:

Public Types
enum	G4ProcessType { kProcessNotDefined = 0, kProcessTransportation = 1, kProcessElectromagetic = 2, kProcessOptical = 3, kProcessHadronic = 4, kProcessPhotoLeptonHadron = 5, kProcessDecay = 6, kProcessGeneral = 7, kProcessParameterization = 8, kProcessUserDefined = 9 }

enum	G4ProcessSubtype { kSubtypeEMCoulombScattering = 1, kSubtypeEMIonization = 2, kSubtypeEMBremsstrahlung = 3, kSubtypeEMPairProdByCharged = 4, kSubtypeEMNuclearStopping = 8, kSubtypeEMMultipleScattering = 10, kSubtypeEMPhotoelectric = 12, kSubtypeEMComptonScattering = 13, kSubtypeEMGammaConversion = 14, kSubtypeHadronElastic = 111, kSubtypeHadronInelastic = 121, kSubtypeHadronCapture = 131, kSubtypeHadronChargeExchange = 161, kSubtypeGeneralStepLimit = 401 }

Public Member Functions
	TG4TrajectoryPoint ()

virtual	~TG4TrajectoryPoint ()

const TLorentzVector &	GetPosition () const
	The position of this trajectory point. More...

const TVector3 &	GetMomentum () const
	The momentum of the particle at this trajectory point. More...

int	GetProcess () const

int	GetSubprocess () const

Public Attributes
TLorentzVector	Position
	The position of this trajectory point. More...

TVector3	Momentum
	The momentum of the particle at this trajectory point. More...

Int_t	Process

Int_t	Subprocess

Friends
class	EDepSim::PersistencyManager

Detailed Description

A class to save a G4 trajectory point into a root output file without linking to geant. The trajectory point is saved in a TG4Trajectory as a way to record the path of a particle through the detector. This is the truth information about the particles which were tracked, but is not a good record of the energy deposition. Use the TG4HitSegment objects for a record of the energy deposition.

Definition at line 94 of file TG4Trajectory.h.

Member Enumeration Documentation

enum TG4TrajectoryPoint::G4ProcessSubtype

Several important process sub-types as defined by geant4. These are copied so that reading the files does not directly depend on having geant4 installed. Check the geant4 documentation for the documentation, but most of the names are fairly self explanatory. The definitions are mostly found in the geant4 include files named G4HadronicProcessType.hh and G4EmProcessSubType.hh

Enumerator
kSubtypeEMCoulombScattering
kSubtypeEMIonization
kSubtypeEMBremsstrahlung
kSubtypeEMPairProdByCharged
kSubtypeEMNuclearStopping
kSubtypeEMMultipleScattering
kSubtypeEMPhotoelectric
kSubtypeEMComptonScattering
kSubtypeEMGammaConversion
kSubtypeHadronElastic
kSubtypeHadronInelastic
kSubtypeHadronCapture
kSubtypeHadronChargeExchange
kSubtypeGeneralStepLimit

Definition at line 127 of file TG4Trajectory.h.

                           {
         // EM subtypes for charged particles.
         kSubtypeEMCoulombScattering = 1,
         kSubtypeEMIonization = 2,
         kSubtypeEMBremsstrahlung = 3,
         kSubtypeEMPairProdByCharged = 4,
         kSubtypeEMNuclearStopping = 8,
 
         // EM subtypes for photons
         kSubtypeEMMultipleScattering = 10,
         kSubtypeEMPhotoelectric = 12,
         kSubtypeEMComptonScattering = 13,
         kSubtypeEMGammaConversion = 14,
         
         // Hadronic subtypes
         kSubtypeHadronElastic = 111,
         kSubtypeHadronInelastic = 121,
         kSubtypeHadronCapture = 131,
         kSubtypeHadronChargeExchange = 161,
 
         // General subtypes
         kSubtypeGeneralStepLimit = 401,
     };

enum TG4TrajectoryPoint::G4ProcessType

Process types copied from the G4 definitions so that this can be compiled without having geant4 installed. Check the exact definitions are in the geant4 documentation, but the (important) names are pretty self explanatory. The definitions can be found in the geant4 include file named G4ProcessType.hh.

Enumerator
kProcessNotDefined
kProcessTransportation
kProcessElectromagetic
kProcessOptical
kProcessHadronic
kProcessPhotoLeptonHadron
kProcessDecay
kProcessGeneral
kProcessParameterization
kProcessUserDefined

Definition at line 108 of file TG4Trajectory.h.

                        {
         kProcessNotDefined = 0,
         kProcessTransportation = 1,
         kProcessElectromagetic = 2 ,
         kProcessOptical = 3,
         kProcessHadronic = 4,
         kProcessPhotoLeptonHadron = 5,
         kProcessDecay = 6,
         kProcessGeneral = 7,
         kProcessParameterization = 8,
         kProcessUserDefined = 9
     };