| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
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10 // * 9 // * *
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15 // * use. Please see the license in the file << 14 // * use. *
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17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
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23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // 23 //
27 // ------------------------------------------- 24 // -------------------------------------------------------------------
28 // GEANT4 Class file 25 // GEANT4 Class file
29 // 26 //
30 // For information related to this code c 27 // For information related to this code contact:
31 // 28 //
32 // File name: G4CrossSectionPatch 29 // File name: G4CrossSectionPatch
33 // 30 //
34 // Author: 31 // Author:
35 // 32 //
36 // Creation date: 15 April 1999 33 // Creation date: 15 April 1999
37 // 34 //
38 // Modifications: 35 // Modifications:
39 // 36 //
40 // ------------------------------------------- 37 // -------------------------------------------------------------------
41 38
42 #include "globals.hh" 39 #include "globals.hh"
43 #include "G4CrossSectionPatch.hh" 40 #include "G4CrossSectionPatch.hh"
44 #include "G4VCrossSectionSource.hh" 41 #include "G4VCrossSectionSource.hh"
45 #include "G4KineticTrack.hh" 42 #include "G4KineticTrack.hh"
46 #include "G4CrossSectionVector.hh" 43 #include "G4CrossSectionVector.hh"
47 44
48 G4CrossSectionPatch::G4CrossSectionPatch() 45 G4CrossSectionPatch::G4CrossSectionPatch()
49 { } 46 { }
50 47
51 48
52 G4CrossSectionPatch::~G4CrossSectionPatch() 49 G4CrossSectionPatch::~G4CrossSectionPatch()
53 { } 50 { }
54 51
55 52
56 G4bool G4CrossSectionPatch::operator==(const G 53 G4bool G4CrossSectionPatch::operator==(const G4CrossSectionPatch &right) const
57 { 54 {
58 return (this == (G4CrossSectionPatch*) &righ 55 return (this == (G4CrossSectionPatch*) &right);
59 } 56 }
60 57
61 58
62 G4bool G4CrossSectionPatch::operator!=(const G 59 G4bool G4CrossSectionPatch::operator!=(const G4CrossSectionPatch &right) const
63 { 60 {
64 return (this != (G4CrossSectionPatch*) &righ 61 return (this != (G4CrossSectionPatch*) &right);
65 } 62 }
66 63
67 64
68 G4double G4CrossSectionPatch::CrossSection(con 65 G4double G4CrossSectionPatch::CrossSection(const G4KineticTrack& trk1,
69 const G4KineticTrack& trk2) const 66 const G4KineticTrack& trk2) const
70 { 67 {
71 // The cross section is provided by one of t 68 // The cross section is provided by one of the components, according to their energy
72 // validity range 69 // validity range
73 70
74 G4double crossSection = 0.; 71 G4double crossSection = 0.;
75 G4double ecm = (trk1.Get4Momentum() + trk2.G 72 G4double ecm = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
76 73
77 const G4CrossSectionVector* components = Get 74 const G4CrossSectionVector* components = GetComponents();
78 if (components != 0) 75 if (components != 0)
79 { 76 {
80 std::size_t nComponents = this->GetCompo << 77 G4int nComponents = this->GetComponents()->size();
>> 78 // G4int nValid = 0;
81 79
82 for (std::size_t i=0; i<nComponents; ++i << 80 G4int i;
>> 81 for (i=0; i<nComponents; i++)
83 { 82 {
84 G4CrossSectionSourcePtr componentPtr 83 G4CrossSectionSourcePtr componentPtr = (*components)[i];
85 G4VCrossSectionSource* component = compone 84 G4VCrossSectionSource* component = componentPtr();
86 if (component->IsValid(ecm)) 85 if (component->IsValid(ecm))
87 { 86 {
88 crossSection = component->CrossSection 87 crossSection = component->CrossSection(trk1,trk2);
89 } 88 }
90 else if (i < (nComponents - 1) ) 89 else if (i < (nComponents - 1) )
91 { 90 {
92 G4CrossSectionSourcePtr nextPtr = (*co 91 G4CrossSectionSourcePtr nextPtr = (*components)[i+1];
93 G4VCrossSectionSource* next = nextPtr( 92 G4VCrossSectionSource* next = nextPtr();
94 if (ecm > component->HighLimit() && ec 93 if (ecm > component->HighLimit() && ecm < next->LowLimit())
95 { 94 {
96 // Merge cross-sections in transition re 95 // Merge cross-sections in transition region between two validity ranges
97 crossSection = Transition(trk1,trk2,comp 96 crossSection = Transition(trk1,trk2,component,next);
98 } 97 }
99 } 98 }
100 } 99 }
101 } 100 }
102 101
103 return crossSection; 102 return crossSection;
104 } 103 }
105 104
106 105
107 G4bool G4CrossSectionPatch::IsValid(G4double e 106 G4bool G4CrossSectionPatch::IsValid(G4double e) const
108 { 107 {
109 // The Patch is valid if any of its componen 108 // The Patch is valid if any of its components are valid
110 G4bool answer = false; 109 G4bool answer = false;
111 const G4CrossSectionVector* components = Get 110 const G4CrossSectionVector* components = GetComponents();
112 if (components != 0) 111 if (components != 0)
113 { 112 {
114 std::size_t n = components->size(); << 113 G4int n = components->size();
115 for (std::size_t i=0; i<n; ++i) << 114 G4int i;
>> 115 for (i=0; i<n; i++)
116 { 116 {
117 G4CrossSectionSourcePtr componentPtr = (*c 117 G4CrossSectionSourcePtr componentPtr = (*components)[i];
118 G4VCrossSectionSource* component = c 118 G4VCrossSectionSource* component = componentPtr();
119 if (component->IsValid(e)) 119 if (component->IsValid(e))
120 { 120 {
121 answer = true; 121 answer = true;
122 break; 122 break;
123 } 123 }
124 } 124 }
125 } 125 }
126 return answer; 126 return answer;
127 } 127 }
128 128
129 129
130 G4double G4CrossSectionPatch::Transition(const 130 G4double G4CrossSectionPatch::Transition(const G4KineticTrack& trk1, const G4KineticTrack& trk2,
131 const G4VCrossSectionSource* c 131 const G4VCrossSectionSource* comp1,
132 const G4VCrossSectionSource* c 132 const G4VCrossSectionSource* comp2) const
133 { 133 {
134 //Merge two cross sections in the transition 134 //Merge two cross sections in the transition region between their validity ranges
135 135
136 G4double crossSection = 0.; 136 G4double crossSection = 0.;
137 137
138 G4double ecm = (trk1.Get4Momentum() + trk2.G 138 G4double ecm = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
139 G4double sigma1 = comp1->CrossSection(trk1,t 139 G4double sigma1 = comp1->CrossSection(trk1,trk2);
140 G4double sigma2 = comp2->CrossSection(trk1,t 140 G4double sigma2 = comp2->CrossSection(trk1,trk2);
141 G4double denom = comp2->LowLimit() - comp1-> 141 G4double denom = comp2->LowLimit() - comp1->HighLimit();
142 G4double diff = ecm - comp1->HighLimit(); 142 G4double diff = ecm - comp1->HighLimit();
143 if (denom > 0. && diff > 0.) 143 if (denom > 0. && diff > 0.)
144 { 144 {
145 G4double ratio = diff / denom; 145 G4double ratio = diff / denom;
146 crossSection = (1.- ratio) * sigma1 + ra 146 crossSection = (1.- ratio) * sigma1 + ratio * sigma2;
147 } 147 }
148 148
149 return crossSection; 149 return crossSection;
150 } 150 }
151 151
152 152
153 G4double G4CrossSectionPatch::Transition(G4dou 153 G4double G4CrossSectionPatch::Transition(G4double ecm,
154 G4double sigma1, G4double sigma2, 154 G4double sigma1, G4double sigma2,
155 G4double e1, G4double e2) const 155 G4double e1, G4double e2) const
156 { 156 {
157 //Merge two cross sections in the transition 157 //Merge two cross sections in the transition region between their validity ranges
158 158
159 G4double crossSection = 0.; 159 G4double crossSection = 0.;
160 160
161 G4double denom = e2 - e1; 161 G4double denom = e2 - e1;
162 G4double diff = ecm - e1; 162 G4double diff = ecm - e1;
163 if (denom > 0. && diff > 0.) 163 if (denom > 0. && diff > 0.)
164 { 164 {
165 G4double ratio = diff / denom; 165 G4double ratio = diff / denom;
166 crossSection = (1.- ratio) * sigma1 + ra 166 crossSection = (1.- ratio) * sigma1 + ratio * sigma2;
167 } 167 }
168 168
169 return crossSection; 169 return crossSection;
170 } 170 }
171 171
172 172