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25 // 22 //
26 // 23 //
>> 24 // $Id: G4CollisionComposite.cc,v 1.4 2004/02/05 10:48:48 stesting Exp $ //
27 25
28 #include "globals.hh" 26 #include "globals.hh"
29 #include "G4SystemOfUnits.hh" <<
30 #include "G4CollisionComposite.hh" 27 #include "G4CollisionComposite.hh"
31 #include "G4VCollision.hh" 28 #include "G4VCollision.hh"
32 #include "G4CollisionVector.hh" 29 #include "G4CollisionVector.hh"
33 #include "G4KineticTrack.hh" 30 #include "G4KineticTrack.hh"
34 #include "G4KineticTrackVector.hh" 31 #include "G4KineticTrackVector.hh"
35 #include "G4VCrossSectionSource.hh" 32 #include "G4VCrossSectionSource.hh"
36 #include "G4HadTmpUtil.hh" 33 #include "G4HadTmpUtil.hh"
37 #include "G4AutoLock.hh" <<
38 34
39 const G4int G4CollisionComposite::nPoints = 32 35 const G4int G4CollisionComposite::nPoints = 32;
40 36
41 const G4double G4CollisionComposite::theT[nPoi << 37 G4double G4CollisionComposite::theT[nPoints] =
42 {.01, .03, .05, .1, .15, .2, .3, .4, .5, .6, . 38 {.01, .03, .05, .1, .15, .2, .3, .4, .5, .6, .7, .8, .9, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 8.0, 10., 15, 20, 50, 100};
43 39
44 G4CollisionComposite::G4CollisionComposite() 40 G4CollisionComposite::G4CollisionComposite()
45 { 41 {
46 G4MUTEXINIT( bufferMutex ); <<
47 } 42 }
48 43
49 44
50 G4CollisionComposite::~G4CollisionComposite() 45 G4CollisionComposite::~G4CollisionComposite()
51 { << 46 {
52 G4MUTEXDESTROY(bufferMutex); <<
53 std::for_each(components.begin(), components 47 std::for_each(components.begin(), components.end(), G4Delete());
54 } 48 }
55 49
56 50
57 G4double G4CollisionComposite::CrossSection(co 51 G4double G4CollisionComposite::CrossSection(const G4KineticTrack& trk1,
58 const G4KineticTrack& trk2) cons 52 const G4KineticTrack& trk2) const
59 { 53 {
60 G4double crossSect = 0.; 54 G4double crossSect = 0.;
61 const G4VCrossSectionSource* xSource = GetCr 55 const G4VCrossSectionSource* xSource = GetCrossSectionSource();
62 if (xSource != 0) 56 if (xSource != 0)
63 // There is a total cross section for this C 57 // There is a total cross section for this Collision
64 { 58 {
65 crossSect = xSource->CrossSection(trk1,trk 59 crossSect = xSource->CrossSection(trk1,trk2);
66 } 60 }
67 else 61 else
68 { 62 {
69 G4AutoLock l(&bufferMutex); <<
70 // waiting for mutable to enable buffering 63 // waiting for mutable to enable buffering.
71 const_cast<G4CollisionComposite *>(this)-> 64 const_cast<G4CollisionComposite *>(this)->BufferCrossSection(trk1.GetDefinition(), trk2.GetDefinition());
72 // G4cerr << "Buffer filled, reying with sq 65 // G4cerr << "Buffer filled, reying with sqrts = "<< (trk1.Get4Momentum()+trk2.Get4Momentum()).mag() <<G4endl;
73 crossSect = BufferedCrossSection(trk1,trk2 66 crossSect = BufferedCrossSection(trk1,trk2);
74 } 67 }
75 return crossSect; 68 return crossSect;
76 } 69 }
77 70
78 71
79 G4KineticTrackVector* G4CollisionComposite::Fi 72 G4KineticTrackVector* G4CollisionComposite::FinalState(const G4KineticTrack& trk1,
80 const G4KineticTrack& trk2) co 73 const G4KineticTrack& trk2) const
81 { 74 {
82 std::vector<G4double> cxCache; 75 std::vector<G4double> cxCache;
83 G4double partialCxSum = 0.0; 76 G4double partialCxSum = 0.0;
84 77
85 size_t i; 78 size_t i;
86 for (i=0; i<components.size(); i++) 79 for (i=0; i<components.size(); i++)
87 { 80 {
88 G4double partialCx; 81 G4double partialCx;
89 // cout << "comp" << i << " " << components 82 // cout << "comp" << i << " " << components[i]()->GetName();
90 if (components[i]->IsInCharge(trk1,trk2)) 83 if (components[i]->IsInCharge(trk1,trk2))
91 { 84 {
92 partialCx = components[i]->CrossSection( 85 partialCx = components[i]->CrossSection(trk1,trk2);
93 } 86 }
94 else 87 else
95 { 88 {
96 partialCx = 0.0; 89 partialCx = 0.0;
97 } 90 }
98 // cout << " cx=" << partialCx << endl; 91 // cout << " cx=" << partialCx << endl;
99 partialCxSum += partialCx; 92 partialCxSum += partialCx;
100 cxCache.push_back(partialCx); 93 cxCache.push_back(partialCx);
101 } 94 }
102 95
103 G4double random = G4UniformRand()*partialCxS 96 G4double random = G4UniformRand()*partialCxSum;
104 G4double running = 0; 97 G4double running = 0;
105 for (i=0; i<cxCache.size(); i++) 98 for (i=0; i<cxCache.size(); i++)
106 { 99 {
107 running += cxCache[i]; 100 running += cxCache[i];
108 if (running > random) 101 if (running > random)
109 { 102 {
110 return components[i]->FinalState(trk1, t 103 return components[i]->FinalState(trk1, trk2);
111 } 104 }
112 } 105 }
113 // G4cerr <<"in charge = "<<IsInCharge(trk1, 106 // G4cerr <<"in charge = "<<IsInCharge(trk1, trk2)<<G4endl;
114 // G4cerr <<"Cross-section = "<<CrossSection( 107 // G4cerr <<"Cross-section = "<<CrossSection(trk1, trk2)/millibarn<<" "<<running<<" "<<cxCache.size()<<G4endl;
115 // G4cerr <<"Names = "<<trk1.GetDefinition()- 108 // G4cerr <<"Names = "<<trk1.GetDefinition()->GetParticleName()<<", "<<trk2.GetDefinition()->GetParticleName()<<G4endl;
116 // throw G4HadronicException(__FILE__, __LINE 109 // throw G4HadronicException(__FILE__, __LINE__, "G4CollisionComposite: no final state found!");
117 return NULL; 110 return NULL;
118 } 111 }
119 112
120 113
121 G4bool G4CollisionComposite::IsInCharge(const 114 G4bool G4CollisionComposite::IsInCharge(const G4KineticTrack& trk1,
122 const G4KineticTrack& trk2) const 115 const G4KineticTrack& trk2) const
123 { 116 {
124 G4bool isInCharge = false; 117 G4bool isInCharge = false;
125 118
126 // The composite is in charge if any of its 119 // The composite is in charge if any of its components is in charge
127 120
128 const G4CollisionVector* comps = GetComponen << 121 const G4CollisionVector* components = GetComponents();
129 if (comps) << 122 if (components)
130 { 123 {
131 G4CollisionVector::const_iterator iter; 124 G4CollisionVector::const_iterator iter;
132 for (iter = comps->begin(); iter != comp << 125 for (iter = components->begin(); iter != components->end(); ++iter)
133 { 126 {
134 if ( ((*iter))->IsInCharge(trk1,trk2) ) isI 127 if ( ((*iter))->IsInCharge(trk1,trk2) ) isInCharge = true;
135 } 128 }
136 } 129 }
137 130
138 return isInCharge; 131 return isInCharge;
139 } 132 }
140 133
141 void G4CollisionComposite:: 134 void G4CollisionComposite::
142 BufferCrossSection(const G4ParticleDefinition 135 BufferCrossSection(const G4ParticleDefinition * aP, const G4ParticleDefinition * bP)
143 { 136 {
144 // check if already buffered 137 // check if already buffered
145 size_t i; 138 size_t i;
146 for(i=0; i<theBuffer.size(); i++) 139 for(i=0; i<theBuffer.size(); i++)
147 { 140 {
148 if(theBuffer[i].InCharge(aP, bP)) return; 141 if(theBuffer[i].InCharge(aP, bP)) return;
149 } 142 }
150 // G4cerr << "Buffering for "<<aP->GetPartic 143 // G4cerr << "Buffering for "<<aP->GetParticleName()<<" "<<bP->GetParticleName()<<G4endl;
151 144
152 // buffer the new one. 145 // buffer the new one.
153 G4CrossSectionBuffer aNewBuff(aP, bP); 146 G4CrossSectionBuffer aNewBuff(aP, bP);
154 size_t maxE=nPoints; 147 size_t maxE=nPoints;
155 for(size_t tt=0; tt<maxE; tt++) 148 for(size_t tt=0; tt<maxE; tt++)
156 { 149 {
157 G4double aT = theT[tt]*GeV; 150 G4double aT = theT[tt]*GeV;
158 G4double crossSect = 0; 151 G4double crossSect = 0;
159 // The total cross-section is summed over 152 // The total cross-section is summed over all the component channels
160 153
161 //A.R. 28-Sep-2012 Fix reproducibility pr <<
162 // Assign the kinetic ene <<
163 // two particles, instead <<
164 G4double atime = 0; 154 G4double atime = 0;
165 G4double btime = 0; <<
166 G4ThreeVector aPosition(0,0,0); 155 G4ThreeVector aPosition(0,0,0);
167 G4ThreeVector bPosition(0,0,0); <<
168 G4double aM = aP->GetPDGMass(); 156 G4double aM = aP->GetPDGMass();
169 G4double bM = bP->GetPDGMass(); << 157 G4double aE = aM+aT;
170 G4double aE = aM; << 158 G4ThreeVector aMom(0,0,sqrt(aE*aE-aM*aM));
171 G4double bE = bM; <<
172 G4ThreeVector aMom(0,0,0); <<
173 G4ThreeVector bMom(0,0,0); <<
174 if ( aM <= bM ) { <<
175 aE += aT; <<
176 aMom = G4ThreeVector(0,0,std::sqrt(aE*aE <<
177 } else { <<
178 bE += aT; <<
179 bMom = G4ThreeVector(0,0,std::sqrt(bE*bE <<
180 } <<
181 G4LorentzVector a4Momentum(aE, aMom); 159 G4LorentzVector a4Momentum(aE, aMom);
>> 160 G4KineticTrack a(const_cast<G4ParticleDefinition *>(aP), atime, aPosition, a4Momentum);
>> 161
>> 162 G4double btime = 0;
>> 163 G4ThreeVector bPosition(0,0,0);
>> 164 G4ThreeVector bMom(0,0,0*MeV);
>> 165 G4double bE = bP->GetPDGMass();
182 G4LorentzVector b4Momentum(bE, bMom); 166 G4LorentzVector b4Momentum(bE, bMom);
183 G4KineticTrack a(aP, atime, aPosition, a4 << 167 G4KineticTrack b(const_cast<G4ParticleDefinition *>(bP), btime, bPosition, b4Momentum);
184 G4KineticTrack b(bP, btime, bPosition, b4 <<
185 168
186 for (i=0; i<components.size(); i++) 169 for (i=0; i<components.size(); i++)
187 { 170 {
188 if(components[i]->IsInCharge(a,b)) 171 if(components[i]->IsInCharge(a,b))
189 { 172 {
190 crossSect += components[i]->CrossSection(a, 173 crossSect += components[i]->CrossSection(a,b);
191 } 174 }
192 } 175 }
193 G4double sqrts = (a4Momentum+b4Momentum). 176 G4double sqrts = (a4Momentum+b4Momentum).mag();
194 aNewBuff.push_back(sqrts, crossSect); 177 aNewBuff.push_back(sqrts, crossSect);
195 } 178 }
196 theBuffer.push_back(std::move(aNewBuff)); << 179 theBuffer.push_back(aNewBuff);
197 // theBuffer.back().Print(); 180 // theBuffer.back().Print();
198 } 181 }
199 182
200 183
201 G4double G4CollisionComposite:: 184 G4double G4CollisionComposite::
202 BufferedCrossSection(const G4KineticTrack& trk 185 BufferedCrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const
203 { 186 {
204 for(size_t i=0; i<theBuffer.size(); i++) 187 for(size_t i=0; i<theBuffer.size(); i++)
205 { 188 {
206 if(theBuffer[i].InCharge(trk1.GetDefiniti 189 if(theBuffer[i].InCharge(trk1.GetDefinition(), trk2.GetDefinition()))
207 { 190 {
208 return theBuffer[i].CrossSection(trk1, 191 return theBuffer[i].CrossSection(trk1, trk2);
209 } 192 }
210 } 193 }
211 throw G4HadronicException(__FILE__, __LINE_ 194 throw G4HadronicException(__FILE__, __LINE__, "G4CollisionComposite::BufferedCrossSection - Blitz !!");
212 return 0; 195 return 0;
213 } 196 }
214 197
215 198