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25 // 25 //
26 // G4VDiscreteProcess << 26
>> 27 //
>> 28 // $Id: G4VDiscreteProcess.hh,v 1.8.4.1 2008/04/25 11:47:06 kurasige Exp $
>> 29 // GEANT4 tag $Name: geant4-09-01-patch-02 $
>> 30 //
>> 31 //
>> 32 // ------------------------------------------------------------
>> 33 // GEANT 4 class header file
>> 34 //
>> 35 // History: first implementation, based on object model of
>> 36 // 2nd December 1995, G.Cosmo
>> 37 // add G4VDiscreteProcess(const G4String&) 24 Jul 1996, Hisaya kurashige
27 // 38 //
28 // Class description: << 39 // Class Description
>> 40 // Abstract class which defines the public behavior of
>> 41 // discrete physics interactions.
>> 42 //
>> 43 // ------------------------------------------------------------
>> 44 // New Physics scheme 18 Dec. 1996 H.Kurahige
>> 45 // ------------------------------------------------------------
>> 46 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
>> 47 // Fixed a bug in PostStepGetPhysicalInteractionLength
>> 48 // 15 Apr. 2002 H.Kurashige
29 // 49 //
30 // Abstract class which defines the public beh <<
31 // discrete physics interactions. <<
32 50
33 // Authors: << 51 #ifndef G4VDiscreteProcess_h
34 // - 2 December 1995, G.Cosmo - First implemen << 52 #define G4VDiscreteProcess_h 1
35 // - 18 December 1996, H.Kurashige - New Physi <<
36 // ------------------------------------------- <<
37 #ifndef G4VDiscreteProcess_hh <<
38 #define G4VDiscreteProcess_hh 1 <<
39 53
40 #include "globals.hh" 54 #include "globals.hh"
41 #include "G4ios.hh" 55 #include "G4ios.hh"
42 56
43 #include "G4VProcess.hh" 57 #include "G4VProcess.hh"
44 58
45 class G4VDiscreteProcess : public G4VProcess 59 class G4VDiscreteProcess : public G4VProcess
46 { 60 {
>> 61 // Abstract class which defines the public behavior of
>> 62 // discrete physics interactions.
47 public: 63 public:
48 64
49 G4VDiscreteProcess(const G4String& aName, << 65 G4VDiscreteProcess(const G4String& ,
50 G4ProcessType aType = f << 66 G4ProcessType aType = fNotDefined );
51 G4VDiscreteProcess(G4VDiscreteProcess&); << 67 G4VDiscreteProcess(G4VDiscreteProcess &);
52 <<
53 virtual ~G4VDiscreteProcess(); <<
54 68
55 G4VDiscreteProcess& operator=(const G4VDis << 69 virtual ~G4VDiscreteProcess();
56 70
57 virtual G4double PostStepGetPhysicalIntera << 71 public :// with description
>> 72 virtual G4double PostStepGetPhysicalInteractionLength(
58 const G4Track& tr 73 const G4Track& track,
59 G4double previous << 74 G4double previousStepSize,
60 G4ForceCondition* << 75 G4ForceCondition* condition
61 ); << 76 );
>> 77
>> 78 virtual G4VParticleChange* PostStepDoIt(
>> 79 const G4Track& ,
>> 80 const G4Step&
>> 81 );
62 82
63 virtual G4VParticleChange* PostStepDoIt( << 83 // no operation in AtRestDoIt and AlongStepDoIt
64 const G4Track& , << 84 virtual G4double AlongStepGetPhysicalInteractionLength(
65 const G4Step& <<
66 ); <<
67 <<
68 // No operation in AtRestDoIt and AlongSte <<
69 // <<
70 virtual G4double AlongStepGetPhysicalInter <<
71 const G4Track&, 85 const G4Track&,
72 G4double , << 86 G4double ,
73 G4double , << 87 G4double ,
74 G4double& , << 88 G4double& ,
75 G4GPILSelection* 89 G4GPILSelection*
76 ) { return -1.0; } << 90 ){ return -1.0; };
77 <<
78 virtual G4double AtRestGetPhysicalInteract <<
79 const G4Track& , <<
80 G4ForceCondition* <<
81 ) { return -1.0; } <<
82 <<
83 // No operation in AtRestDoIt and AlongSte <<
84 // <<
85 virtual G4VParticleChange* AtRestDoIt( <<
86 const G4Track& , <<
87 const G4Step& <<
88 ) { return nullptr <<
89 91
90 virtual G4VParticleChange* AlongStepDoIt( << 92 virtual G4double AtRestGetPhysicalInteractionLength(
91 const G4Track& , 93 const G4Track& ,
92 const G4Step& << 94 G4ForceCondition*
93 ) { return nullptr << 95 ) { return -1.0; };
94 96
95 // cross section in the unit of inverse le << 97 // no operation in AtRestDoIt and AlongStepDoIt
96 // function of kinetic energy << 98 virtual G4VParticleChange* AtRestDoIt(
97 virtual G4double GetCrossSection( << 99 const G4Track& ,
98 const G4double, << 100 const G4Step&
99 const G4MaterialC << 101 ) {return 0;};
100 ) { return 0.0; } << 102
101 << 103 virtual G4VParticleChange* AlongStepDoIt(
102 // minimal energy for non-zero cross secti << 104 const G4Track& ,
103 virtual G4double MinPrimaryEnergy( << 105 const G4Step&
104 const G4ParticleD << 106 ) {return 0;};
105 const G4Material* <<
106 ) { return 0.0; } <<
107 107
108 protected: << 108 protected:// with description
109 << 109 virtual G4double GetMeanFreePath(const G4Track& aTrack,
110 virtual G4double GetMeanFreePath( const G4 << 110 G4double previousStepSize,
111 G4double << 111 G4ForceCondition* condition
112 G4ForceC << 112 )=0;
113 // Calculates from the macroscopic cross << 113 // Calculates from the macroscopic cross section a mean
114 // free path, the value is returned in u << 114 // free path, the value is returned in units of distance.
115 115
116 private: 116 private:
>> 117 // hide default constructor and assignment operator as private
>> 118 G4VDiscreteProcess();
>> 119 G4VDiscreteProcess & operator=(const G4VDiscreteProcess &right);
117 120
118 G4VDiscreteProcess(); <<
119 // Hidden default constructor <<
120 }; 121 };
121 122
>> 123 // -----------------------------------------
>> 124 // inlined function members implementation
>> 125 // -----------------------------------------
>> 126 #include "G4Step.hh"
>> 127 #include "G4Track.hh"
>> 128 #include "G4MaterialTable.hh"
>> 129 #include "G4VParticleChange.hh"
>> 130
>> 131 inline G4double G4VDiscreteProcess::PostStepGetPhysicalInteractionLength(
>> 132 const G4Track& track,
>> 133 G4double previousStepSize,
>> 134 G4ForceCondition* condition
>> 135 )
>> 136 {
>> 137 if ( (previousStepSize < 0.0) || (theNumberOfInteractionLengthLeft<=0.0)) {
>> 138 // beggining of tracking (or just after DoIt of this process)
>> 139 ResetNumberOfInteractionLengthLeft();
>> 140 } else if ( previousStepSize > 0.0) {
>> 141 // subtract NumberOfInteractionLengthLeft
>> 142 SubtractNumberOfInteractionLengthLeft(previousStepSize);
>> 143 } else {
>> 144 // zero step
>> 145 // DO NOTHING
>> 146 }
>> 147
>> 148 // condition is set to "Not Forced"
>> 149 *condition = NotForced;
>> 150
>> 151 // get mean free path
>> 152 currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);
>> 153
>> 154 G4double value;
>> 155 if (currentInteractionLength <DBL_MAX) {
>> 156 value = theNumberOfInteractionLengthLeft * currentInteractionLength;
>> 157 } else {
>> 158 value = DBL_MAX;
>> 159 }
>> 160 #ifdef G4VERBOSE
>> 161 if (verboseLevel>1){
>> 162 G4cout << "G4VDiscreteProcess::PostStepGetPhysicalInteractionLength ";
>> 163 G4cout << "[ " << GetProcessName() << "]" <<G4endl;
>> 164 track.GetDynamicParticle()->DumpInfo();
>> 165 G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl;
>> 166 G4cout << "InteractionLength= " << value/cm <<"[cm] " <<G4endl;
>> 167 }
122 #endif 168 #endif
>> 169 return value;
>> 170 }
>> 171
>> 172 inline G4VParticleChange* G4VDiscreteProcess::PostStepDoIt(
>> 173 const G4Track& ,
>> 174 const G4Step&
>> 175 )
>> 176 {
>> 177 // clear NumberOfInteractionLengthLeft
>> 178 ClearNumberOfInteractionLengthLeft();
>> 179
>> 180 return pParticleChange;
>> 181 }
>> 182
>> 183
>> 184 #endif
>> 185
>> 186
>> 187
123 188