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27 // 27 //
28 // =========================================== 28 // ===========================================================================
29 // GEANT4 class header file 29 // GEANT4 class header file
30 // 30 //
31 // Class: G4IonDEDXScalingICRU7 31 // Class: G4IonDEDXScalingICRU73
32 // 32 //
33 // Base class: G4VIonDEDXScalingAlgo 33 // Base class: G4VIonDEDXScalingAlgorithm
34 // 34 //
35 // Author: Anton Lechner (Anton. 35 // Author: Anton Lechner (Anton.Lechner@cern.ch)
36 // 36 //
37 // First implementation: 10. 05. 2009 37 // First implementation: 10. 05. 2009
38 // 38 //
39 // Modifications: 12. 11. 2009 - Moved all dec 39 // Modifications: 12. 11. 2009 - Moved all decision logic concerning ICRU 73
40 // scaling for h 40 // scaling for heavy ions into this class.
41 // Adapting Scal 41 // Adapting ScalingFactorEnergy class according
42 // to changes in 42 // to changes in base class (AL).
43 // 43 //
44 // Class description: 44 // Class description:
45 // dE/dx scaling algorithm applied on top o 45 // dE/dx scaling algorithm applied on top of ICRU 73 data (for ions not
46 // covered by the ICRU 73 report) 46 // covered by the ICRU 73 report)
47 // 47 //
48 // Comments: 48 // Comments:
49 // 49 //
50 // =========================================== 50 // ===========================================================================
51 51
52 #ifndef G4IONDEDXSCALINGICRU73_HH 52 #ifndef G4IONDEDXSCALINGICRU73_HH
53 #define G4IONDEDXSCALINGICRU73_HH 53 #define G4IONDEDXSCALINGICRU73_HH
54 54
55 #include "globals.hh" 55 #include "globals.hh"
56 #include "G4VIonDEDXScalingAlgorithm.hh" 56 #include "G4VIonDEDXScalingAlgorithm.hh"
57 #include "G4Material.hh" 57 #include "G4Material.hh"
58 #include "G4ParticleDefinition.hh" 58 #include "G4ParticleDefinition.hh"
59 #include <vector> 59 #include <vector>
60 #include "G4Exp.hh" << 60
61 61
62 class G4IonDEDXScalingICRU73 : public G4VIonDE 62 class G4IonDEDXScalingICRU73 : public G4VIonDEDXScalingAlgorithm {
63 63
64 public: 64 public:
65 explicit G4IonDEDXScalingICRU73(G4int minAto << 65 G4IonDEDXScalingICRU73(G4int minAtomicNumberIon = 19,
66 G4int maxAtomicNumberIon = 102); << 66 G4int maxAtomicNumberIon = 102);
67 ~G4IonDEDXScalingICRU73(); << 67 ~G4IonDEDXScalingICRU73();
68 << 68
69 // Function for scaling the kinetic energy ( << 69 // Function for scaling the kinetic energy (no scaling by default).
70 // Returns scaling factor for a given ion. << 70 // Returns scaling factor for a given ion.
71 G4double ScalingFactorEnergy( << 71 G4double ScalingFactorEnergy(
72 const G4ParticleDefinition* parti 72 const G4ParticleDefinition* particle, // Projectile (ion)
73 const G4Material* material) overr << 73 const G4Material* material); // Target material
74 74
75 75
76 // Function for scaling the dE/dx value (no 76 // Function for scaling the dE/dx value (no scaling by default).
77 // Returns scaling factor for a given ion-m 77 // Returns scaling factor for a given ion-material couple and
78 // a given kinetic energy. 78 // a given kinetic energy.
79 G4double ScalingFactorDEDX( 79 G4double ScalingFactorDEDX(
80 const G4ParticleDefinition* parti 80 const G4ParticleDefinition* particle, // Projectile (ion)
81 const G4Material*, 81 const G4Material*, // Target material
82 G4double kineticEnergy) override; << 82 G4double kineticEnergy); // Kinetic energy
83 83
84 84
85 // Function for defining a base particle fo 85 // Function for defining a base particle for dE/dx calculation.
86 // (no base particle by default). Returns a 86 // (no base particle by default). Returns atomic number of base
87 // particle. 87 // particle.
88 G4int AtomicNumberBaseIon( 88 G4int AtomicNumberBaseIon(
89 G4int atomicNumberIon, 89 G4int atomicNumberIon, // Atomic number of ion
90 const G4Material*) override; << 90 const G4Material*); // Target material
91 91
92 private: 92 private:
93 void UpdateCacheParticle( 93 void UpdateCacheParticle(
94 const G4ParticleDefinition* parti 94 const G4ParticleDefinition* particle); // Projectile (ion)
95 95
96 void UpdateCacheMaterial( 96 void UpdateCacheMaterial(
97 const G4Material* material); 97 const G4Material* material); // Target material
98 98
99 void CreateReferenceParticles(); 99 void CreateReferenceParticles();
100 100
101 G4double EquilibriumCharge( 101 G4double EquilibriumCharge(
102 G4double mass, 102 G4double mass, // Ion mass
103 G4double charge, 103 G4double charge, // Ion charge
104 G4double atomicNumberPow, 104 G4double atomicNumberPow, // Power of atomic nmb
105 G4double kineticEnergy); 105 G4double kineticEnergy); // Kinetic energy
106 106
107 // Scaling is only applied for ions with at 107 // Scaling is only applied for ions with atomic numbers in the range
108 // defined by the following parameters: 108 // defined by the following parameters:
109 G4int minAtomicNumber; 109 G4int minAtomicNumber;
110 G4int maxAtomicNumber; 110 G4int maxAtomicNumber;
111 111
112 G4bool referencePrepared; <<
113 <<
114 // Some properties of reference particle (F 112 // Some properties of reference particle (Fe) are stored for faster access
115 ///////////////////////////G4ParticleDefini << 113 G4ParticleDefinition* referenceFe;
116 G4int atomicNumberRefFe; 114 G4int atomicNumberRefFe;
117 G4int massNumberRefFe; 115 G4int massNumberRefFe;
118 G4double atomicNumberRefPow23Fe; 116 G4double atomicNumberRefPow23Fe;
119 G4double chargeRefFe; 117 G4double chargeRefFe;
120 G4double massRefFe; 118 G4double massRefFe;
121 119
122 // Some properties of reference particle (A 120 // Some properties of reference particle (Ar) are stored for faster access
123 ///////////////////////////G4ParticleDefini << 121 G4ParticleDefinition* referenceAr;
124 G4int atomicNumberRefAr; 122 G4int atomicNumberRefAr;
125 G4int massNumberRefAr; 123 G4int massNumberRefAr;
126 G4double atomicNumberRefPow23Ar; 124 G4double atomicNumberRefPow23Ar;
127 G4double chargeRefAr; 125 G4double chargeRefAr;
128 G4double massRefAr; 126 G4double massRefAr;
129 127
130 // Flag indicating the use of Fe ions as re 128 // Flag indicating the use of Fe ions as reference particles
131 G4bool useFe; 129 G4bool useFe;
132 130
133 // Some properties of projectiles are store 131 // Some properties of projectiles are stored for faster access
134 const G4ParticleDefinition* cacheParticle; 132 const G4ParticleDefinition* cacheParticle;
135 G4int cacheMassNumber; 133 G4int cacheMassNumber;
136 G4int cacheAtomicNumber; 134 G4int cacheAtomicNumber;
137 G4double cacheAtomicNumberPow23; 135 G4double cacheAtomicNumberPow23;
138 G4double cacheCharge; 136 G4double cacheCharge;
139 G4double cacheMass; 137 G4double cacheMass;
140 138
141 // Material pointer 139 // Material pointer
142 const G4Material* cacheMaterial; 140 const G4Material* cacheMaterial;
143 }; 141 };
144 142
145 // ########################################### 143 // ###########################################################################
146 144
147 inline void G4IonDEDXScalingICRU73::UpdateCach 145 inline void G4IonDEDXScalingICRU73::UpdateCacheParticle (
148 const G4ParticleDefinition* partic 146 const G4ParticleDefinition* particle) { // Projectile (ion)
149 147
150 if(particle != cacheParticle) { 148 if(particle != cacheParticle) {
151 149
152 cacheParticle = particle; 150 cacheParticle = particle;
153 cacheAtomicNumber = particle -> GetAtomic 151 cacheAtomicNumber = particle -> GetAtomicNumber();
154 cacheMassNumber = particle -> GetAtomicMa 152 cacheMassNumber = particle -> GetAtomicMass();
155 cacheCharge = particle -> GetPDGCharge(); 153 cacheCharge = particle -> GetPDGCharge();
156 cacheMass = particle -> GetPDGMass(); 154 cacheMass = particle -> GetPDGMass();
157 cacheAtomicNumberPow23 = std::pow(G4doubl 155 cacheAtomicNumberPow23 = std::pow(G4double(cacheAtomicNumber), 2./3.);
158 } 156 }
159 } 157 }
160 158
161 // ########################################### 159 // ###########################################################################
162 160
163 inline void G4IonDEDXScalingICRU73::UpdateCach 161 inline void G4IonDEDXScalingICRU73::UpdateCacheMaterial (
164 const G4Material* material) { 162 const G4Material* material) { // Target material
165 163
166 if(cacheMaterial != material) { 164 if(cacheMaterial != material) {
167 165
168 cacheMaterial = material; 166 cacheMaterial = material;
169 167
170 useFe = true; 168 useFe = true;
171 169
172 size_t nmbElements = material -> GetNumbe 170 size_t nmbElements = material -> GetNumberOfElements();
173 if( nmbElements > 1 ) useFe = false; 171 if( nmbElements > 1 ) useFe = false;
174 172
175 if( material -> GetName() == "G4_WATER" ) 173 if( material -> GetName() == "G4_WATER" ) useFe = true;
176 } 174 }
177 } 175 }
178 176
179 // ########################################### 177 // ###########################################################################
180 178
181 inline G4double G4IonDEDXScalingICRU73::Equili 179 inline G4double G4IonDEDXScalingICRU73::EquilibriumCharge(
182 G4double m 180 G4double mass,
183 G4double c 181 G4double charge,
184 G4double a 182 G4double atomicNumberPow,
185 G4double k 183 G4double kineticEnergy) {
186 184
187 G4double totalEnergy = kineticEnergy + mass 185 G4double totalEnergy = kineticEnergy + mass;
188 G4double betaSquared = kineticEnergy * 186 G4double betaSquared = kineticEnergy *
189 (totalEnergy + mass) / (tota 187 (totalEnergy + mass) / (totalEnergy * totalEnergy);
190 188
191 G4double beta = std::sqrt( betaSquared ); 189 G4double beta = std::sqrt( betaSquared );
192 190
193 G4double velOverBohrVel = beta / CLHEP::fine 191 G4double velOverBohrVel = beta / CLHEP::fine_structure_const;
194 192
195 G4double q1 = 1.0 - G4Exp(-velOverBohrVel / << 193 G4double q1 = 1.0 - std::exp(-velOverBohrVel / atomicNumberPow);
196 194
197 return q1 * charge; 195 return q1 * charge;
198 } 196 }
199 197
200 // ########################################### 198 // ###########################################################################
201 199
202 #endif 200 #endif
203 201