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26 // 26 //
27 // Geant4 Header : G4AntiNuclElastic 27 // Geant4 Header : G4AntiNuclElastic
28 // 28 //
29 // 29 //
30 30
31 #include "G4AntiNuclElastic.hh" 31 #include "G4AntiNuclElastic.hh"
32 32
33 #include "G4PhysicalConstants.hh" 33 #include "G4PhysicalConstants.hh"
34 #include "G4SystemOfUnits.hh" 34 #include "G4SystemOfUnits.hh"
35 #include "G4ParticleTable.hh" 35 #include "G4ParticleTable.hh"
36 #include "G4ParticleDefinition.hh" 36 #include "G4ParticleDefinition.hh"
37 #include "G4IonTable.hh" 37 #include "G4IonTable.hh"
38 #include "Randomize.hh" 38 #include "Randomize.hh"
39 #include "G4AntiProton.hh" 39 #include "G4AntiProton.hh"
40 #include "G4AntiNeutron.hh" 40 #include "G4AntiNeutron.hh"
41 #include "G4AntiDeuteron.hh" 41 #include "G4AntiDeuteron.hh"
42 #include "G4AntiAlpha.hh" 42 #include "G4AntiAlpha.hh"
43 #include "G4AntiTriton.hh" 43 #include "G4AntiTriton.hh"
44 #include "G4AntiHe3.hh" 44 #include "G4AntiHe3.hh"
45 #include "G4Proton.hh" 45 #include "G4Proton.hh"
46 #include "G4Neutron.hh" 46 #include "G4Neutron.hh"
47 #include "G4Deuteron.hh" 47 #include "G4Deuteron.hh"
48 #include "G4Alpha.hh" 48 #include "G4Alpha.hh"
49 #include "G4Pow.hh" 49 #include "G4Pow.hh"
50 #include "G4Exp.hh" 50 #include "G4Exp.hh"
51 #include "G4Log.hh" 51 #include "G4Log.hh"
52 52
53 #include "G4NucleiProperties.hh" 53 #include "G4NucleiProperties.hh"
54 #include "G4CrossSectionDataSetRegistry.hh" 54 #include "G4CrossSectionDataSetRegistry.hh"
55 55
56 G4AntiNuclElastic::G4AntiNuclElastic() 56 G4AntiNuclElastic::G4AntiNuclElastic()
57 : G4HadronElastic("AntiAElastic") 57 : G4HadronElastic("AntiAElastic")
58 { 58 {
59 //V.Ivanchenko commented out 59 //V.Ivanchenko commented out
60 //SetMinEnergy( 0.1*GeV ); 60 //SetMinEnergy( 0.1*GeV );
61 //SetMaxEnergy( 10.*TeV ); 61 //SetMaxEnergy( 10.*TeV );
62 62
63 theAProton = G4AntiProton::AntiProton( 63 theAProton = G4AntiProton::AntiProton();
64 theANeutron = G4AntiNeutron::AntiNeutro 64 theANeutron = G4AntiNeutron::AntiNeutron();
65 theADeuteron = G4AntiDeuteron::AntiDeute 65 theADeuteron = G4AntiDeuteron::AntiDeuteron();
66 theATriton = G4AntiTriton::AntiTriton( 66 theATriton = G4AntiTriton::AntiTriton();
67 theAAlpha = G4AntiAlpha::AntiAlpha(); 67 theAAlpha = G4AntiAlpha::AntiAlpha();
68 theAHe3 = G4AntiHe3::AntiHe3(); 68 theAHe3 = G4AntiHe3::AntiHe3();
69 69
70 theProton = G4Proton::Proton(); 70 theProton = G4Proton::Proton();
71 theNeutron = G4Neutron::Neutron(); 71 theNeutron = G4Neutron::Neutron();
72 theDeuteron = G4Deuteron::Deuteron(); 72 theDeuteron = G4Deuteron::Deuteron();
73 theAlpha = G4Alpha::Alpha(); 73 theAlpha = G4Alpha::Alpha();
74 74
75 G4CrossSectionDataSetRegistry* reg = G4Cross 75 G4CrossSectionDataSetRegistry* reg = G4CrossSectionDataSetRegistry::Instance();
76 cs = static_cast<G4ComponentAntiNuclNuclearX 76 cs = static_cast<G4ComponentAntiNuclNuclearXS*>(reg->GetComponentCrossSection("AntiAGlauber"));
77 if(!cs) { cs = new G4ComponentAntiNuclNuclea 77 if(!cs) { cs = new G4ComponentAntiNuclNuclearXS(); }
78 78
79 fParticle = 0; 79 fParticle = 0;
80 fWaveVector = 0.; 80 fWaveVector = 0.;
81 fBeta = 0.; 81 fBeta = 0.;
82 fZommerfeld = 0.; 82 fZommerfeld = 0.;
83 fAm = 0.; 83 fAm = 0.;
84 fTetaCMS = 0.; 84 fTetaCMS = 0.;
85 fRa = 0.; 85 fRa = 0.;
86 fRef = 0.; 86 fRef = 0.;
87 fceff = 0.; 87 fceff = 0.;
88 fptot = 0.; 88 fptot = 0.;
89 fTmax = 0.; 89 fTmax = 0.;
90 fThetaLab = 0.; 90 fThetaLab = 0.;
91 } 91 }
92 92
93 ////////////////////////////////////////////// 93 /////////////////////////////////////////////////////////////////////////
94 G4AntiNuclElastic::~G4AntiNuclElastic() 94 G4AntiNuclElastic::~G4AntiNuclElastic()
95 {} 95 {}
96 96
97 ////////////////////////////////////////////// 97 ////////////////////////////////////////////////////////////////////////
98 // sample momentum transfer in the CMS system 98 // sample momentum transfer in the CMS system
99 G4double G4AntiNuclElastic::SampleInvariantT(c 99 G4double G4AntiNuclElastic::SampleInvariantT(const G4ParticleDefinition* particle,
100 G4double Plab, G4int Z, G4int 100 G4double Plab, G4int Z, G4int A)
101 { 101 {
102 G4double T; 102 G4double T;
103 G4double Mproj = particle->GetPDGMass(); 103 G4double Mproj = particle->GetPDGMass();
104 G4LorentzVector Pproj(0.,0.,Plab,std::sqrt(P 104 G4LorentzVector Pproj(0.,0.,Plab,std::sqrt(Plab*Plab+Mproj*Mproj));
105 G4double ctet1 = GetcosTeta1(Plab, A); 105 G4double ctet1 = GetcosTeta1(Plab, A);
106 106
107 G4double energy=Pproj.e()-Mproj; 107 G4double energy=Pproj.e()-Mproj;
108 108
109 const G4ParticleDefinition* theParticle = pa 109 const G4ParticleDefinition* theParticle = particle;
110 110
111 G4ParticleDefinition * theTargetDef = 0; 111 G4ParticleDefinition * theTargetDef = 0;
112 112
113 if (Z == 1 && A == 1) theTargetDef = th 113 if (Z == 1 && A == 1) theTargetDef = theProton;
114 else if (Z == 1 && A == 2) theTargetDef = th 114 else if (Z == 1 && A == 2) theTargetDef = theDeuteron;
115 else if (Z == 1 && A == 3) theTargetDef = G4 115 else if (Z == 1 && A == 3) theTargetDef = G4Triton::Triton();
116 else if (Z == 2 && A == 3) theTargetDef = G4 116 else if (Z == 2 && A == 3) theTargetDef = G4He3::He3();
117 else if (Z == 2 && A == 4) theTargetDef = th 117 else if (Z == 2 && A == 4) theTargetDef = theAlpha;
118 118
119 119
120 G4double TargMass =G4NucleiProperties::GetNu 120 G4double TargMass =G4NucleiProperties::GetNuclearMass(A,Z);
121 121
122 //transform to CMS 122 //transform to CMS
123 123
124 G4LorentzVector lv(0.0,0.0,0.0,TargMass); 124 G4LorentzVector lv(0.0,0.0,0.0,TargMass);
125 lv += Pproj; 125 lv += Pproj;
126 G4double S = lv.mag2()/(GeV*GeV); 126 G4double S = lv.mag2()/(GeV*GeV);
127 127
128 G4ThreeVector bst = lv.boostVector(); 128 G4ThreeVector bst = lv.boostVector();
129 Pproj.boost(-bst); 129 Pproj.boost(-bst);
130 130
131 G4ThreeVector p1 = Pproj.vect(); 131 G4ThreeVector p1 = Pproj.vect();
132 G4double ptot = p1.mag(); 132 G4double ptot = p1.mag();
133 133
134 fbst = bst; 134 fbst = bst;
135 fptot= ptot; 135 fptot= ptot;
136 fTmax = 4.0*ptot*ptot; // In (MeV/c)^2 136 fTmax = 4.0*ptot*ptot; // In (MeV/c)^2
137 137
138 if(Plab < (std::abs(particle->GetBaryonNumbe 138 if(Plab < (std::abs(particle->GetBaryonNumber())*100)*MeV)
139 {return fTmax*G4UniformRand();} 139 {return fTmax*G4UniformRand();}
140 140
141 // Calculation of NN collision properties 141 // Calculation of NN collision properties
142 G4double PlabPerN = Plab/std::abs(theParticl 142 G4double PlabPerN = Plab/std::abs(theParticle->GetBaryonNumber());
143 G4double NucleonMass = 0.5*( theProton->GetP 143 G4double NucleonMass = 0.5*( theProton->GetPDGMass() + theNeutron->GetPDGMass() );
144 G4double PrNucleonMass(0.); // Projectile a 144 G4double PrNucleonMass(0.); // Projectile average nucleon mass
145 if( std::abs(theParticle->GetBaryonNumber()) 145 if( std::abs(theParticle->GetBaryonNumber()) == 1 ) { PrNucleonMass = theParticle->GetPDGMass(); }
146 else 146 else { PrNucleonMass = NucleonMass; }
147 G4double energyPerN = std::sqrt( sqr(PlabPer 147 G4double energyPerN = std::sqrt( sqr(PlabPerN) + sqr(PrNucleonMass));
148 energyPerN -= PrNucleonMass; 148 energyPerN -= PrNucleonMass;
149 //--- 149 //---
150 150
151 G4double Z1 = particle->GetPDGCharge(); 151 G4double Z1 = particle->GetPDGCharge();
152 G4double Z2 = Z; 152 G4double Z2 = Z;
153 153
154 G4double beta = CalculateParticleBeta(partic 154 G4double beta = CalculateParticleBeta(particle, ptot);
155 G4double n = CalculateZommerfeld( beta, Z1 155 G4double n = CalculateZommerfeld( beta, Z1, Z2 );
156 G4double Am = CalculateAm( ptot, n, Z2 ); 156 G4double Am = CalculateAm( ptot, n, Z2 );
157 fWaveVector = ptot; // /hbarc; 157 fWaveVector = ptot; // /hbarc;
158 158
159 G4LorentzVector Fproj(0.,0.,0.,0.); 159 G4LorentzVector Fproj(0.,0.,0.,0.);
160 const G4double mevToBarn = 0.38938e+6; 160 const G4double mevToBarn = 0.38938e+6;
161 G4double XsCoulomb = mevToBarn*sqr(n/fWaveVe 161 G4double XsCoulomb = mevToBarn*sqr(n/fWaveVector)*pi*(1+ctet1)/(1.+Am)/(1.+2.*Am-ctet1);
162 162
163 G4double XsElastHadronic =cs->GetElasticElem 163 G4double XsElastHadronic =cs->GetElasticElementCrossSection(particle, energy, Z, (G4double)A);
164 G4double XsTotalHadronic =cs->GetTotalElemen 164 G4double XsTotalHadronic =cs->GetTotalElementCrossSection(particle, energy, Z, (G4double)A);
165 165
166 XsElastHadronic/=millibarn; XsTotalHadronic/ 166 XsElastHadronic/=millibarn; XsTotalHadronic/=millibarn;
167 167
168 G4double CoulombProb = XsCoulomb/(XsCoulomb 168 G4double CoulombProb = XsCoulomb/(XsCoulomb+XsElastHadronic);
169 169
170 if(G4UniformRand() < CoulombProb) 170 if(G4UniformRand() < CoulombProb)
171 { // Simulation of Coulomb scattering 171 { // Simulation of Coulomb scattering
172 172
173 G4double phi = twopi * G4UniformRand(); 173 G4double phi = twopi * G4UniformRand();
174 G4double Ksi = G4UniformRand(); 174 G4double Ksi = G4UniformRand();
175 175
176 G4double par1 = 2.*(1.+Am)/(1.+ctet1); 176 G4double par1 = 2.*(1.+Am)/(1.+ctet1);
177 177
178 // ////sample ThetaCMS in Coulomb part 178 // ////sample ThetaCMS in Coulomb part
179 179
180 G4double cosThetaCMS = (par1*ctet1- Ksi*(1 180 G4double cosThetaCMS = (par1*ctet1- Ksi*(1.+2.*Am))/(par1-Ksi);
181 181
182 G4double PtZ=ptot*cosThetaCMS; 182 G4double PtZ=ptot*cosThetaCMS;
183 Fproj.setPz(PtZ); 183 Fproj.setPz(PtZ);
184 G4double PtProjCMS = ptot*std::sqrt(1.0 - 184 G4double PtProjCMS = ptot*std::sqrt(1.0 - cosThetaCMS*cosThetaCMS);
185 G4double PtX= PtProjCMS * std::cos(phi); 185 G4double PtX= PtProjCMS * std::cos(phi);
186 G4double PtY= PtProjCMS * std::sin(phi); 186 G4double PtY= PtProjCMS * std::sin(phi);
187 Fproj.setPx(PtX); 187 Fproj.setPx(PtX);
188 Fproj.setPy(PtY); 188 Fproj.setPy(PtY);
189 Fproj.setE(std::sqrt(PtX*PtX+PtY*PtY+PtZ*P 189 Fproj.setE(std::sqrt(PtX*PtX+PtY*PtY+PtZ*PtZ+Mproj*Mproj));
190 T = -(Pproj-Fproj).mag2(); 190 T = -(Pproj-Fproj).mag2();
191 } 191 }
192 else 192 else
193 { 193 {
194 // Simulation of strong interaction scatte 194 // Simulation of strong interaction scattering
195 195
196 G4double Qmax = 2.*ptot/197.33; // in fm 196 G4double Qmax = 2.*ptot/197.33; // in fm^-1
197 197
198 G4double Amag = 1.0; // A1 in Majora 198 G4double Amag = 1.0; // A1 in Majorant funct:A1*exp(-q*A2)
199 G4double SlopeMag = 0.5; // A2 in Majora 199 G4double SlopeMag = 0.5; // A2 in Majorant funct:A1*exp(-q*A2)
200 200
201 G4double sig_pbarp = cs->GetAntiHadronNucl 201 G4double sig_pbarp = cs->GetAntiHadronNucleonTotCrSc(theAProton,energyPerN); //mb
202 202
203 fRa = 1.113*G4Pow::GetInstance()->Z13(A) - 203 fRa = 1.113*G4Pow::GetInstance()->Z13(A) -
204 0.227/G4Pow::GetInstance()->Z13(A); 204 0.227/G4Pow::GetInstance()->Z13(A);
205 if(A == 3) fRa=1.81; 205 if(A == 3) fRa=1.81;
206 if(A == 4) fRa=1.37; 206 if(A == 4) fRa=1.37;
207 207
208 if((A>=12.) && (A<27) ) fRa=fRa*0.85; 208 if((A>=12.) && (A<27) ) fRa=fRa*0.85;
209 if((A>=27.) && (A<48) ) fRa=fRa*0.90; 209 if((A>=27.) && (A<48) ) fRa=fRa*0.90;
210 if((A>=48.) && (A<65) ) fRa=fRa*0.95; 210 if((A>=48.) && (A<65) ) fRa=fRa*0.95;
211 211
212 G4double Ref2 = XsTotalHadronic/10./2./pi; 212 G4double Ref2 = XsTotalHadronic/10./2./pi; // in fm^2
213 G4double ceff2 = 0.0; 213 G4double ceff2 = 0.0;
214 G4double rho = 0.0; 214 G4double rho = 0.0;
215 215
216 if ((theParticle == theAProton) || (thePa 216 if ((theParticle == theAProton) || (theParticle == theANeutron))
217 { 217 {
218 if(theTargetDef == theProton) 218 if(theTargetDef == theProton)
219 { 219 {
220 // Determination of the real part of P 220 // Determination of the real part of Pbar+N amplitude
221 if(Plab < 610.) 221 if(Plab < 610.)
222 { rho = 1.3347-10.342*Plab/1000.+22.27 222 { rho = 1.3347-10.342*Plab/1000.+22.277*Plab/1000.*Plab/1000.-
223 13.634*Plab/1000.*Plab/1000.*P 223 13.634*Plab/1000.*Plab/1000.*Plab/1000. ;}
224 if((Plab < 5500.)&&(Plab >= 610.) ) 224 if((Plab < 5500.)&&(Plab >= 610.) )
225 { rho = 0.22; } 225 { rho = 0.22; }
226 if((Plab >= 5500.)&&(Plab < 12300.) ) 226 if((Plab >= 5500.)&&(Plab < 12300.) )
227 { rho = -0.32; } 227 { rho = -0.32; }
228 if( Plab >= 12300.) 228 if( Plab >= 12300.)
229 { rho = 0.135-2.26/(std::sqrt(S)) ;} 229 { rho = 0.135-2.26/(std::sqrt(S)) ;}
230 Ref2 = 0.35 + 0.9/std::sqrt(std::sqrt 230 Ref2 = 0.35 + 0.9/std::sqrt(std::sqrt(S-4.*0.88))+0.04*G4Log(S) ;
231 ceff2 = 0.375 - 2./S + 0.44/(sqr(S-4.) 231 ceff2 = 0.375 - 2./S + 0.44/(sqr(S-4.)+1.5) ;
232 Ref2 =Ref2*Ref2; 232 Ref2 =Ref2*Ref2;
233 ceff2 = ceff2*ceff2; 233 ceff2 = ceff2*ceff2;
234 } 234 }
235 235
236 if( (Z==1)&&(A==2) ) 236 if( (Z==1)&&(A==2) )
237 { 237 {
238 Ref2 = fRa*fRa - 0.28 + 0.019 * sig_pb 238 Ref2 = fRa*fRa - 0.28 + 0.019 * sig_pbarp + 2.06e-6 * sig_pbarp*sig_pbarp;
239 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 239 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 0.2899*G4Exp(-0.03*sig_pbarp);
240 } 240 }
241 if( (Z==1)&&(A==3) ) 241 if( (Z==1)&&(A==3) )
242 { 242 {
243 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pb 243 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pbarp - 3.69e-7 * sig_pbarp*sig_pbarp;
244 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 244 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
245 } 245 }
246 if( (Z==2)&&(A==3) ) 246 if( (Z==2)&&(A==3) )
247 { 247 {
248 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pb 248 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pbarp - 3.69e-7 * sig_pbarp*sig_pbarp;
249 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 249 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
250 } 250 }
251 if( (Z==2)&&(A==4) ) 251 if( (Z==2)&&(A==4) )
252 { 252 {
253 Ref2 = fRa*fRa -0.46 +0.03*sig_pbarp - 253 Ref2 = fRa*fRa -0.46 +0.03*sig_pbarp - 2.98e-6*sig_pbarp*sig_pbarp;
254 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0. 254 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0.3359*G4Exp(-0.03*sig_pbarp);
255 } 255 }
256 if(Z>2) 256 if(Z>2)
257 { 257 {
258 Ref2 = fRa*fRa +2.48*0.01*sig_pbarp*fR 258 Ref2 = fRa*fRa +2.48*0.01*sig_pbarp*fRa - 2.23e-6*sig_pbarp*sig_pbarp*fRa*fRa;
259 ceff2 = 0.16+3.3e-4*sig_pbarp+0.35*G4E 259 ceff2 = 0.16+3.3e-4*sig_pbarp+0.35*G4Exp(-0.03*sig_pbarp);
260 } 260 }
261 } // End of if ((theParticle == theAProto 261 } // End of if ((theParticle == theAProton) || (theParticle == theANeutron))
262 262
263 if (theParticle == theADeuteron) 263 if (theParticle == theADeuteron)
264 { 264 {
265 if(theTargetDef == theProton) 265 if(theTargetDef == theProton)
266 { 266 {
267 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 267 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 0.2899*G4Exp(-0.03*sig_pbarp);
268 } 268 }
269 if(theTargetDef == theDeuteron) 269 if(theTargetDef == theDeuteron)
270 { 270 {
271 ceff2 = 0.65 + 3.0e-4*sig_pbarp + 0.55 271 ceff2 = 0.65 + 3.0e-4*sig_pbarp + 0.55 * G4Exp(-0.03*sig_pbarp);
272 } 272 }
273 if( (theTargetDef == G4Triton::Triton()) 273 if( (theTargetDef == G4Triton::Triton()) || (theTargetDef == G4He3::He3() ) )
274 { 274 {
275 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 275 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 * G4Exp(-0.02*sig_pbarp);
276 } 276 }
277 if(theTargetDef == theAlpha) 277 if(theTargetDef == theAlpha)
278 { 278 {
279 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.4 279 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.45 * G4Exp(-0.02*sig_pbarp);
280 } 280 }
281 if(Z>2) 281 if(Z>2)
282 { 282 {
283 ceff2 = 0.38 + 2.0e-4 *sig_pbarp + 0.5 283 ceff2 = 0.38 + 2.0e-4 *sig_pbarp + 0.5 * G4Exp(-0.03*sig_pbarp);
284 } 284 }
285 } 285 }
286 286
287 if( (theParticle ==theAHe3) || (theParticl 287 if( (theParticle ==theAHe3) || (theParticle ==theATriton) )
288 { 288 {
289 if(theTargetDef == theProton) 289 if(theTargetDef == theProton)
290 { 290 {
291 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 291 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
292 } 292 }
293 if(theTargetDef == theDeuteron) 293 if(theTargetDef == theDeuteron)
294 { 294 {
295 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 295 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 * G4Exp(-0.02*sig_pbarp);
296 } 296 }
297 if( (theTargetDef == G4Triton::Triton()) 297 if( (theTargetDef == G4Triton::Triton()) || (theTargetDef == G4He3::He3() ) )
298 { 298 {
299 ceff2 = 0.39 + 2.7e-4*sig_pbarp + 0.7 299 ceff2 = 0.39 + 2.7e-4*sig_pbarp + 0.7 * G4Exp(-0.02*sig_pbarp);
300 } 300 }
301 if(theTargetDef == theAlpha) 301 if(theTargetDef == theAlpha)
302 { 302 {
303 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 303 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 * G4Exp(-0.03*sig_pbarp);
304 } 304 }
305 if(Z>2) 305 if(Z>2)
306 { 306 {
307 ceff2 = 0.26 + 2.2e-4*sig_pbarp + 0.33 307 ceff2 = 0.26 + 2.2e-4*sig_pbarp + 0.33*G4Exp(-0.03*sig_pbarp);
308 } 308 }
309 } 309 }
310 310
311 if ( (theParticle == theAAlpha) || (ceff2 311 if ( (theParticle == theAAlpha) || (ceff2 == 0.0) )
312 { 312 {
313 if(theTargetDef == theProton) 313 if(theTargetDef == theProton)
314 { 314 {
315 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0. 315 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0.3359*G4Exp(-0.03*sig_pbarp);
316 } 316 }
317 if(theTargetDef == theDeuteron) 317 if(theTargetDef == theDeuteron)
318 { 318 {
319 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.4 319 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.45 * G4Exp(-0.02*sig_pbarp);
320 } 320 }
321 if( (theTargetDef == G4Triton::Triton()) 321 if( (theTargetDef == G4Triton::Triton()) || (theTargetDef == G4He3::He3() ) )
322 { 322 {
323 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 323 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 * G4Exp(-0.03*sig_pbarp);
324 } 324 }
325 if(theTargetDef == theAlpha) 325 if(theTargetDef == theAlpha)
326 { 326 {
327 ceff2 = 0.17 + 3.5e-4*sig_pbarp + 0.45 327 ceff2 = 0.17 + 3.5e-4*sig_pbarp + 0.45 * G4Exp(-0.03*sig_pbarp);
328 } 328 }
329 if(Z>2) 329 if(Z>2)
330 { 330 {
331 ceff2 = 0.22 + 2.0e-4*sig_pbarp + 0.2 331 ceff2 = 0.22 + 2.0e-4*sig_pbarp + 0.2 * G4Exp(-0.03*sig_pbarp);
332 } 332 }
333 } 333 }
334 334
335 fRef=std::sqrt(Ref2); 335 fRef=std::sqrt(Ref2);
336 fceff = std::sqrt(ceff2); 336 fceff = std::sqrt(ceff2);
337 337
338 G4double Q = 0.0 ; 338 G4double Q = 0.0 ;
339 G4double BracFunct; 339 G4double BracFunct;
340 340
341 const G4int maxNumberOfLoops = 10000; 341 const G4int maxNumberOfLoops = 10000;
342 G4int loopCounter = 0; 342 G4int loopCounter = 0;
343 do 343 do
344 { 344 {
345 Q = -G4Log(1.-(1.- G4Exp(-SlopeMag * Qma 345 Q = -G4Log(1.-(1.- G4Exp(-SlopeMag * Qmax))* G4UniformRand() )/SlopeMag;
346 G4double x = fRef * Q; 346 G4double x = fRef * Q;
347 BracFunct = ( ( sqr(BesselOneByArg(x))+s 347 BracFunct = ( ( sqr(BesselOneByArg(x))+sqr(rho/2. * BesselJzero(x)) )
348 * sqr(DampFactor(pi*fceff*Q))) /(Ama 348 * sqr(DampFactor(pi*fceff*Q))) /(Amag*G4Exp(-SlopeMag*Q));
349 BracFunct = BracFunct * Q; 349 BracFunct = BracFunct * Q;
350 } 350 }
351 while ( (G4UniformRand()>BracFunct) && 351 while ( (G4UniformRand()>BracFunct) &&
352 ++loopCounter < maxNumberOfLoops ) 352 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
353 if ( loopCounter >= maxNumberOfLoops ) { 353 if ( loopCounter >= maxNumberOfLoops ) {
354 fTetaCMS = 0.0; 354 fTetaCMS = 0.0;
355 return 0.0; 355 return 0.0;
356 } 356 }
357 357
358 T= sqr(Q); 358 T= sqr(Q);
359 T*=3.893913e+4; // fm^(-2) -> MeV^2 359 T*=3.893913e+4; // fm^(-2) -> MeV^2
360 360
361 } // End of simulation of strong interactio 361 } // End of simulation of strong interaction scattering
362 362
363 return T; 363 return T;
364 } 364 }
365 365
366 ////////////////////////////////////////////// 366 /////////////////////////////////////////////////////////////////////
367 // Sample of Theta in CMS 367 // Sample of Theta in CMS
368 G4double G4AntiNuclElastic::SampleThetaCMS(co 368 G4double G4AntiNuclElastic::SampleThetaCMS(const G4ParticleDefinition* p, G4double plab,
369 369 G4int Z, G4int A)
370 { 370 {
371 G4double T; 371 G4double T;
372 T = SampleInvariantT( p, plab, Z, A); 372 T = SampleInvariantT( p, plab, Z, A);
373 373
374 // NaN finder 374 // NaN finder
375 if(!(T < 0.0 || T >= 0.0)) 375 if(!(T < 0.0 || T >= 0.0))
376 { 376 {
377 if (verboseLevel > 0) 377 if (verboseLevel > 0)
378 { 378 {
379 G4cout << "G4DiffuseElastic:WARNING: A = 379 G4cout << "G4DiffuseElastic:WARNING: A = " << A
380 << " mom(GeV)= " << plab/GeV 380 << " mom(GeV)= " << plab/GeV
381 << " S-wave will be sampled" 381 << " S-wave will be sampled"
382 << G4endl; 382 << G4endl;
383 } 383 }
384 T = G4UniformRand()*fTmax; 384 T = G4UniformRand()*fTmax;
385 385
386 } 386 }
387 387
388 if(fptot > 0.) 388 if(fptot > 0.)
389 { 389 {
390 G4double cosTet=1.0-T/(2.*fptot*fptot); 390 G4double cosTet=1.0-T/(2.*fptot*fptot);
391 if(cosTet > 1.0 ) cosTet= 1.; 391 if(cosTet > 1.0 ) cosTet= 1.;
392 if(cosTet < -1.0 ) cosTet=-1.; 392 if(cosTet < -1.0 ) cosTet=-1.;
393 fTetaCMS=std::acos(cosTet); 393 fTetaCMS=std::acos(cosTet);
394 return fTetaCMS; 394 return fTetaCMS;
395 } else 395 } else
396 { 396 {
397 return 2.*G4UniformRand()-1.; 397 return 2.*G4UniformRand()-1.;
398 } 398 }
399 } 399 }
400 400
401 401
402 ////////////////////////////////////////////// 402 /////////////////////////////////////////////////////////////////////
403 // Sample of Theta in Lab System 403 // Sample of Theta in Lab System
404 G4double G4AntiNuclElastic::SampleThetaLab(co 404 G4double G4AntiNuclElastic::SampleThetaLab(const G4ParticleDefinition* p, G4double plab,
405 405 G4int Z, G4int A)
406 { 406 {
407 G4double T; 407 G4double T;
408 T = SampleInvariantT( p, plab, Z, A); 408 T = SampleInvariantT( p, plab, Z, A);
409 409
410 // NaN finder 410 // NaN finder
411 if(!(T < 0.0 || T >= 0.0)) 411 if(!(T < 0.0 || T >= 0.0))
412 { 412 {
413 if (verboseLevel > 0) 413 if (verboseLevel > 0)
414 { 414 {
415 G4cout << "G4DiffuseElastic:WARNING: A = 415 G4cout << "G4DiffuseElastic:WARNING: A = " << A
416 << " mom(GeV)= " << plab/GeV 416 << " mom(GeV)= " << plab/GeV
417 << " S-wave will be sampled" 417 << " S-wave will be sampled"
418 << G4endl; 418 << G4endl;
419 } 419 }
420 T = G4UniformRand()*fTmax; 420 T = G4UniformRand()*fTmax;
421 } 421 }
422 422
423 G4double phi = G4UniformRand()*twopi; 423 G4double phi = G4UniformRand()*twopi;
424 424
425 G4double cost(1.); 425 G4double cost(1.);
426 if(fTmax > 0.) {cost = 1. - 2.0*T/fTmax;} 426 if(fTmax > 0.) {cost = 1. - 2.0*T/fTmax;}
427 427
428 G4double sint; 428 G4double sint;
429 if( cost >= 1.0 ) 429 if( cost >= 1.0 )
430 { 430 {
431 cost = 1.0; 431 cost = 1.0;
432 sint = 0.0; 432 sint = 0.0;
433 } 433 }
434 else if( cost <= -1.0) 434 else if( cost <= -1.0)
435 { 435 {
436 cost = -1.0; 436 cost = -1.0;
437 sint = 0.0; 437 sint = 0.0;
438 } 438 }
439 else 439 else
440 { 440 {
441 sint = std::sqrt((1.0-cost)*(1.0+cost)); 441 sint = std::sqrt((1.0-cost)*(1.0+cost));
442 } 442 }
443 443
444 G4double m1 = p->GetPDGMass(); 444 G4double m1 = p->GetPDGMass();
445 G4ThreeVector v(sint*std::cos(phi),sint*std: 445 G4ThreeVector v(sint*std::cos(phi),sint*std::sin(phi),cost);
446 v *= fptot; 446 v *= fptot;
447 G4LorentzVector nlv(v.x(),v.y(),v.z(),std::s 447 G4LorentzVector nlv(v.x(),v.y(),v.z(),std::sqrt(fptot*fptot + m1*m1));
448 448
449 nlv.boost(fbst); 449 nlv.boost(fbst);
450 450
451 G4ThreeVector np = nlv.vect(); 451 G4ThreeVector np = nlv.vect();
452 G4double theta = np.theta(); 452 G4double theta = np.theta();
453 fThetaLab = theta; 453 fThetaLab = theta;
454 454
455 return theta; 455 return theta;
456 } 456 }
457 457
458 ////////////////////////////////////////////// 458 ////////////////////////////////////////////////////////////////////
459 // Calculation of Damp factor 459 // Calculation of Damp factor
460 G4double G4AntiNuclElastic::DampFactor(G4doub 460 G4double G4AntiNuclElastic::DampFactor(G4double x)
461 { 461 {
462 G4double df; 462 G4double df;
463 G4double f3 = 6.; // first factorials 463 G4double f3 = 6.; // first factorials
464 464
465 if( std::fabs(x) < 0.01 ) 465 if( std::fabs(x) < 0.01 )
466 { 466 {
467 df=1./(1.+x*x/f3); 467 df=1./(1.+x*x/f3);
468 } 468 }
469 else 469 else
470 { 470 {
471 df = x/std::sinh(x); 471 df = x/std::sinh(x);
472 } 472 }
473 return df; 473 return df;
474 } 474 }
475 475
476 476
477 ////////////////////////////////////////////// 477 /////////////////////////////////////////////////////////////////////////////////
478 // Calculation of particle velocity Beta 478 // Calculation of particle velocity Beta
479 479
480 G4double G4AntiNuclElastic::CalculateParticle 480 G4double G4AntiNuclElastic::CalculateParticleBeta( const G4ParticleDefinition* particle,
481 G4double mom 481 G4double momentum )
482 { 482 {
483 G4double mass = particle->GetPDGMass(); 483 G4double mass = particle->GetPDGMass();
484 G4double a = momentum/mass; 484 G4double a = momentum/mass;
485 fBeta = a/std::sqrt(1+a*a); 485 fBeta = a/std::sqrt(1+a*a);
486 486
487 return fBeta; 487 return fBeta;
488 } 488 }
489 489
490 490
491 ////////////////////////////////////////////// 491 ///////////////////////////////////////////////////////////////////////////////////
492 // Calculation of parameter Zommerfeld 492 // Calculation of parameter Zommerfeld
493 493
494 G4double G4AntiNuclElastic::CalculateZommerfe 494 G4double G4AntiNuclElastic::CalculateZommerfeld( G4double beta, G4double Z1, G4double Z2 )
495 { 495 {
496 fZommerfeld = fine_structure_const*Z1*Z2/bet 496 fZommerfeld = fine_structure_const*Z1*Z2/beta;
497 497
498 return fZommerfeld; 498 return fZommerfeld;
499 } 499 }
500 500
501 ////////////////////////////////////////////// 501 ////////////////////////////////////////////////////////////////////////////////////
502 // 502 //
503 G4double G4AntiNuclElastic::CalculateAm( G4dou 503 G4double G4AntiNuclElastic::CalculateAm( G4double momentum, G4double n, G4double Z)
504 { 504 {
505 G4double k = momentum/hbarc; 505 G4double k = momentum/hbarc;
506 G4double ch = 1.13 + 3.76*n*n; 506 G4double ch = 1.13 + 3.76*n*n;
507 G4double zn = 1.77*k/G4Pow::GetInstance()-> 507 G4double zn = 1.77*k/G4Pow::GetInstance()->A13(Z)*Bohr_radius;
508 G4double zn2 = zn*zn; 508 G4double zn2 = zn*zn;
509 fAm = ch/zn2; 509 fAm = ch/zn2;
510 510
511 return fAm; 511 return fAm;
512 } 512 }
513 513
514 ////////////////////////////////////////////// 514 /////////////////////////////////////////////////////////////
515 // 515 //
516 // Bessel J0 function based on rational approx 516 // Bessel J0 function based on rational approximation from
517 // J.F. Hart, Computer Approximations, New Yor 517 // J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
518 518
519 G4double G4AntiNuclElastic::BesselJzero(G4doub 519 G4double G4AntiNuclElastic::BesselJzero(G4double value)
520 { 520 {
521 G4double modvalue, value2, fact1, fact2, arg 521 G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
522 522
523 modvalue = std::fabs(value); 523 modvalue = std::fabs(value);
524 524
525 if ( value < 8.0 && value > -8.0 ) 525 if ( value < 8.0 && value > -8.0 )
526 { 526 {
527 value2 = value*value; 527 value2 = value*value;
528 528
529 fact1 = 57568490574.0 + value2*(-13362590 529 fact1 = 57568490574.0 + value2*(-13362590354.0
530 + value2*( 65161964 530 + value2*( 651619640.7
531 + value2*(-11214424 531 + value2*(-11214424.18
532 + value2*( 77392.33 532 + value2*( 77392.33017
533 + value2*(-184.9052 533 + value2*(-184.9052456 ) ) ) ) );
534 534
535 fact2 = 57568490411.0 + value2*( 10295329 535 fact2 = 57568490411.0 + value2*( 1029532985.0
536 + value2*( 9494680. 536 + value2*( 9494680.718
537 + value2*(59272.648 537 + value2*(59272.64853
538 + value2*(267.85327 538 + value2*(267.8532712
539 + value2*1.0 539 + value2*1.0 ) ) ) );
540 540
541 bessel = fact1/fact2; 541 bessel = fact1/fact2;
542 } 542 }
543 else 543 else
544 { 544 {
545 arg = 8.0/modvalue; 545 arg = 8.0/modvalue;
546 546
547 value2 = arg*arg; 547 value2 = arg*arg;
548 548
549 shift = modvalue-0.785398164; 549 shift = modvalue-0.785398164;
550 550
551 fact1 = 1.0 + value2*(-0.1098628627e-2 551 fact1 = 1.0 + value2*(-0.1098628627e-2
552 + value2*(0.2734510407e-4 552 + value2*(0.2734510407e-4
553 + value2*(-0.2073370639e-5 553 + value2*(-0.2073370639e-5
554 + value2*0.2093887211e-6 ) 554 + value2*0.2093887211e-6 ) ) );
555 fact2 = -0.1562499995e-1 + value2*(0.143048 555 fact2 = -0.1562499995e-1 + value2*(0.1430488765e-3
556 + value2*(-0.691 556 + value2*(-0.6911147651e-5
557 + value2*(0.7621 557 + value2*(0.7621095161e-6
558 - value2*0.93494 558 - value2*0.934945152e-7 ) ) );
559 559
560 bessel = std::sqrt(0.636619772/modvalue)*( 560 bessel = std::sqrt(0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2);
561 } 561 }
562 return bessel; 562 return bessel;
563 } 563 }
564 564
565 565
566 ////////////////////////////////////////////// 566 //////////////////////////////////////////////////////////////////////////////
567 // Bessel J1 function based on rational approx 567 // Bessel J1 function based on rational approximation from
568 // J.F. Hart, Computer Approximations, New Yor 568 // J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
569 569
570 G4double G4AntiNuclElastic::BesselJone(G4doub 570 G4double G4AntiNuclElastic::BesselJone(G4double value)
571 { 571 {
572 G4double modvalue, value2, fact1, fact2, arg 572 G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
573 573
574 modvalue = std::fabs(value); 574 modvalue = std::fabs(value);
575 575
576 if ( modvalue < 8.0 ) 576 if ( modvalue < 8.0 )
577 { 577 {
578 value2 = value*value; 578 value2 = value*value;
579 fact1 = value*(72362614232.0 + value2*(-7 579 fact1 = value*(72362614232.0 + value2*(-7895059235.0
580 + value2*( 2 580 + value2*( 242396853.1
581 + value2*(-2 581 + value2*(-2972611.439
582 + value2*( 1 582 + value2*( 15704.48260
583 + value2*(-3 583 + value2*(-30.16036606 ) ) ) ) ) );
584 584
585 fact2 = 144725228442.0 + value2*(23005351 585 fact2 = 144725228442.0 + value2*(2300535178.0
586 + value2*(18583304 586 + value2*(18583304.74
587 + value2*(99447.43 587 + value2*(99447.43394
588 + value2*(376.9991 588 + value2*(376.9991397
589 + value2*1.0 589 + value2*1.0 ) ) ) );
590 bessel = fact1/fact2; 590 bessel = fact1/fact2;
591 } 591 }
592 else 592 else
593 { 593 {
594 arg = 8.0/modvalue; 594 arg = 8.0/modvalue;
595 value2 = arg*arg; 595 value2 = arg*arg;
596 596
597 shift = modvalue - 2.356194491; 597 shift = modvalue - 2.356194491;
598 598
599 fact1 = 1.0 + value2*( 0.183105e-2 599 fact1 = 1.0 + value2*( 0.183105e-2
600 + value2*(-0.3516396496e-4 600 + value2*(-0.3516396496e-4
601 + value2*(0.2457520174e-5 601 + value2*(0.2457520174e-5
602 + value2*(-0.240337019e-6 602 + value2*(-0.240337019e-6 ) ) ) );
603 603
604 fact2 = 0.04687499995 + value2*(-0.2002690 604 fact2 = 0.04687499995 + value2*(-0.2002690873e-3
605 + value2*( 0.8449199 605 + value2*( 0.8449199096e-5
606 + value2*(-0.8822898 606 + value2*(-0.88228987e-6
607 + value2*0.105787412 607 + value2*0.105787412e-6 ) ) );
608 608
609 bessel = std::sqrt( 0.636619772/modvalue)* 609 bessel = std::sqrt( 0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2);
610 if (value < 0.0) bessel = -bessel; 610 if (value < 0.0) bessel = -bessel;
611 } 611 }
612 return bessel; 612 return bessel;
613 } 613 }
614 614
615 ////////////////////////////////////////////// 615 ////////////////////////////////////////////////////////////////////////////////
616 // return J1(x)/x with special case for small 616 // return J1(x)/x with special case for small x
617 G4double G4AntiNuclElastic::BesselOneByArg(G4d 617 G4double G4AntiNuclElastic::BesselOneByArg(G4double x)
618 { 618 {
619 G4double x2, result; 619 G4double x2, result;
620 620
621 if( std::fabs(x) < 0.01 ) 621 if( std::fabs(x) < 0.01 )
622 { 622 {
623 x *= 0.5; 623 x *= 0.5;
624 x2 = x*x; 624 x2 = x*x;
625 result = (2.- x2 + x2*x2/6.)/4.; 625 result = (2.- x2 + x2*x2/6.)/4.;
626 } 626 }
627 else 627 else
628 { 628 {
629 result = BesselJone(x)/x; 629 result = BesselJone(x)/x;
630 } 630 }
631 return result; 631 return result;
632 } 632 }
633 633
634 ////////////////////////////////////////////// 634 /////////////////////////////////////////////////////////////////////////////////
635 // return angle from which Coulomb scattering 635 // return angle from which Coulomb scattering is calculated
636 G4double G4AntiNuclElastic::GetcosTeta1(G4doub 636 G4double G4AntiNuclElastic::GetcosTeta1(G4double plab, G4int A)
637 { 637 {
638 638
639 // G4double p0 =G4LossTableManager::Instance() 639 // G4double p0 =G4LossTableManager::Instance()->FactorForAngleLimit()*CLHEP::hbarc/CLHEP::fermi;
640 G4double p0 = 1.*hbarc/fermi; 640 G4double p0 = 1.*hbarc/fermi;
641 //G4double cteta1 = 1.0 - p0*p0/2.0 * pow(A,2. 641 //G4double cteta1 = 1.0 - p0*p0/2.0 * pow(A,2./3.)/(plab*plab);
642 G4double cteta1 = 1.0 - p0*p0/2.0 * G4Pow::G 642 G4double cteta1 = 1.0 - p0*p0/2.0 * G4Pow::GetInstance()->Z23(A)/(plab*plab);
643 ////////////////// 643 //////////////////
644 if(cteta1 < -1.) cteta1 = -1.0; 644 if(cteta1 < -1.) cteta1 = -1.0;
645 return cteta1; 645 return cteta1;
646 } 646 }
647 647
648 648
649 649
650 650
651 651
652 652
653 653
654 654