| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France 27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium 28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France 29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France 31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France 32 // Davide Mancusi, CEA-Saclay, France
33 // 33 //
34 #define INCLXX_IN_GEANT4_MODE 1 34 #define INCLXX_IN_GEANT4_MODE 1
35 35
36 #include "globals.hh" 36 #include "globals.hh"
37 37
38 #include "G4INCLOmegaNToPiNChannel.hh" 38 #include "G4INCLOmegaNToPiNChannel.hh"
39 #include "G4INCLKinematicsUtils.hh" 39 #include "G4INCLKinematicsUtils.hh"
40 #include "G4INCLBinaryCollisionAvatar.hh" 40 #include "G4INCLBinaryCollisionAvatar.hh"
41 #include "G4INCLRandom.hh" 41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh" 42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh" 43 #include "G4INCLLogger.hh"
44 44
45 namespace G4INCL { 45 namespace G4INCL {
46 46
47 OmegaNToPiNChannel::OmegaNToPiNChannel(Par 47 OmegaNToPiNChannel::OmegaNToPiNChannel(Particle *p1, Particle *p2)
48 : particle1(p1), particle2(p2) 48 : particle1(p1), particle2(p2)
49 { 49 {
50 50
51 } 51 }
52 52
53 OmegaNToPiNChannel::~OmegaNToPiNChannel(){ 53 OmegaNToPiNChannel::~OmegaNToPiNChannel(){
54 54
55 } 55 }
56 56
57 void OmegaNToPiNChannel::fillFinalState(Fi 57 void OmegaNToPiNChannel::fillFinalState(FinalState *fs) {
58 Particle * nucleon; 58 Particle * nucleon;
59 Particle * omega; 59 Particle * omega;
60 if(particle1->isNucleon()) { 60 if(particle1->isNucleon()) {
61 nucleon = particle1; 61 nucleon = particle1;
62 omega = particle2; 62 omega = particle2;
63 } else { 63 } else {
64 nucleon = particle2; 64 nucleon = particle2;
65 omega = particle1; 65 omega = particle1;
66 } 66 }
67 67
68 const G4double r2 = Random::shoot(); 68 const G4double r2 = Random::shoot();
69 if (nucleon->getType() == Neutron) { 69 if (nucleon->getType() == Neutron) {
70 if (r2*3. < 2.) { 70 if (r2*3. < 2.) {
71 nucleon->setType(Proton); 71 nucleon->setType(Proton);
72 omega->setType(PiMinus); 72 omega->setType(PiMinus);
73 } 73 }
74 else { 74 else {
75 nucleon->setType(Neutron); 75 nucleon->setType(Neutron);
76 omega->setType(PiZero); 76 omega->setType(PiZero);
77 } 77 }
78 } 78 }
79 else { 79 else {
80 if (r2*3. < 2.) { 80 if (r2*3. < 2.) {
81 nucleon->setType(Neutron); 81 nucleon->setType(Neutron);
82 omega->setType(PiPlus); 82 omega->setType(PiPlus);
83 } 83 }
84 else { 84 else {
85 nucleon->setType(Proton); 85 nucleon->setType(Proton);
86 omega->setType(PiZero); 86 omega->setType(PiZero);
87 } 87 }
88 } 88 }
89 89
90 G4double sh=nucleon->getEnergy()+omega 90 G4double sh=nucleon->getEnergy()+omega->getEnergy();
91 G4double mn=nucleon->getMass(); 91 G4double mn=nucleon->getMass();
92 G4double me=omega->getMass(); 92 G4double me=omega->getMass();
93 G4double en=(sh*sh+mn*mn-me*me)/(2*sh); 93 G4double en=(sh*sh+mn*mn-me*me)/(2*sh);
94 nucleon->setEnergy(en); 94 nucleon->setEnergy(en);
95 G4double ee=std::sqrt(en*en-mn*mn+me*me); 95 G4double ee=std::sqrt(en*en-mn*mn+me*me);
96 omega->setEnergy(ee); 96 omega->setEnergy(ee);
97 G4double pn=std::sqrt(en*en-mn*mn); 97 G4double pn=std::sqrt(en*en-mn*mn);
98 /*// test isotropy 98 /*// test isotropy
99 const G4double pi=std::acos(-1.0); << 99 const G4double pi=std::acos(-1.0);
100 G4double x1; 100 G4double x1;
101 G4double u1; 101 G4double u1;
102 G4double fteta; 102 G4double fteta;
103 G4double teta; 103 G4double teta;
104 G4double fi; 104 G4double fi;
105 105
106 G4int passe1=0; 106 G4int passe1=0;
107 while (passe1==0) { 107 while (passe1==0) {
108 // Sample x from 0 to pi/2 108 // Sample x from 0 to pi/2
109 x1=(pi/2.)*Random::shoot(); 109 x1=(pi/2.)*Random::shoot();
110 // Sample u from 0 to 1 110 // Sample u from 0 to 1
111 u1=Random::shoot(); 111 u1=Random::shoot();
112 fteta=std::sin(x1); 112 fteta=std::sin(x1);
113 // The condition 113 // The condition
114 if (u1 < fteta) { 114 if (u1 < fteta) {
115 teta=x1; 115 teta=x1;
116 passe1=1; 116 passe1=1;
117 if (Random::shoot() < 0.5) { 117 if (Random::shoot() < 0.5) {
118 teta=pi-teta; 118 teta=pi-teta;
119 } 119 }
120 } 120 }
121 } 121 }
122 fi=(2.0*pi)*Random::shoot(); 122 fi=(2.0*pi)*Random::shoot();
123 123
124 // end test 124 // end test
125 ThreeVector mom_nucleon( 125 ThreeVector mom_nucleon(
126 pn*std::sin(te 126 pn*std::sin(teta)*std::cos(fi),
127 pn*std::sin(te 127 pn*std::sin(teta)*std::sin(fi),
128 pn*std::cos(te 128 pn*std::cos(teta)
129 ); 129 );
130 if (Random::shoot() < 0.5) { 130 if (Random::shoot() < 0.5) {
131 nucleon->setMomentum(mom_nucleon); 131 nucleon->setMomentum(mom_nucleon);
132 omega->setMomentum(-mom_nucleon); 132 omega->setMomentum(-mom_nucleon);
133 } 133 }
134 else { 134 else {
135 omega->setMomentum(mom_nucleon); 135 omega->setMomentum(mom_nucleon);
136 nucleon->setMomentum(-mom_nucleon); 136 nucleon->setMomentum(-mom_nucleon);
137 } 137 }
138 */ 138 */
139 ThreeVector mom_nucleon = Random::normVect 139 ThreeVector mom_nucleon = Random::normVector(pn);
140 140
141 nucleon->setMomentum(mom_nucleon); 141 nucleon->setMomentum(mom_nucleon);
142 omega->setMomentum(-mom_nucleon); 142 omega->setMomentum(-mom_nucleon);
143 143
144 fs->addModifiedParticle(nucleon); 144 fs->addModifiedParticle(nucleon);
145 fs->addModifiedParticle(omega); 145 fs->addModifiedParticle(omega);
146 } 146 }
147 147
148 } 148 }
149 149