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>> 26 // $Id: G4AntiNuclElastic.cc - A.Galoyan 02.05.2011
26 // 27 //
27 // Geant4 Header : G4AntiNuclElastic 28 // Geant4 Header : G4AntiNuclElastic
28 // 29 //
29 // 30 //
30 31
31 #include "G4AntiNuclElastic.hh" 32 #include "G4AntiNuclElastic.hh"
32 33
33 #include "G4PhysicalConstants.hh" 34 #include "G4PhysicalConstants.hh"
34 #include "G4SystemOfUnits.hh" 35 #include "G4SystemOfUnits.hh"
35 #include "G4ParticleTable.hh" 36 #include "G4ParticleTable.hh"
36 #include "G4ParticleDefinition.hh" 37 #include "G4ParticleDefinition.hh"
37 #include "G4IonTable.hh" 38 #include "G4IonTable.hh"
38 #include "Randomize.hh" 39 #include "Randomize.hh"
39 #include "G4AntiProton.hh" 40 #include "G4AntiProton.hh"
40 #include "G4AntiNeutron.hh" 41 #include "G4AntiNeutron.hh"
41 #include "G4AntiDeuteron.hh" 42 #include "G4AntiDeuteron.hh"
42 #include "G4AntiAlpha.hh" 43 #include "G4AntiAlpha.hh"
43 #include "G4AntiTriton.hh" 44 #include "G4AntiTriton.hh"
44 #include "G4AntiHe3.hh" 45 #include "G4AntiHe3.hh"
45 #include "G4Proton.hh" 46 #include "G4Proton.hh"
46 #include "G4Neutron.hh" 47 #include "G4Neutron.hh"
47 #include "G4Deuteron.hh" 48 #include "G4Deuteron.hh"
48 #include "G4Alpha.hh" 49 #include "G4Alpha.hh"
49 #include "G4Pow.hh" 50 #include "G4Pow.hh"
50 #include "G4Exp.hh" 51 #include "G4Exp.hh"
51 #include "G4Log.hh" 52 #include "G4Log.hh"
52 53
53 #include "G4NucleiProperties.hh" 54 #include "G4NucleiProperties.hh"
54 #include "G4CrossSectionDataSetRegistry.hh" << 55
55 56
56 G4AntiNuclElastic::G4AntiNuclElastic() 57 G4AntiNuclElastic::G4AntiNuclElastic()
57 : G4HadronElastic("AntiAElastic") 58 : G4HadronElastic("AntiAElastic")
58 { 59 {
59 //V.Ivanchenko commented out 60 //V.Ivanchenko commented out
60 //SetMinEnergy( 0.1*GeV ); 61 //SetMinEnergy( 0.1*GeV );
61 //SetMaxEnergy( 10.*TeV ); 62 //SetMaxEnergy( 10.*TeV );
62 63
>> 64
63 theAProton = G4AntiProton::AntiProton( 65 theAProton = G4AntiProton::AntiProton();
64 theANeutron = G4AntiNeutron::AntiNeutro 66 theANeutron = G4AntiNeutron::AntiNeutron();
65 theADeuteron = G4AntiDeuteron::AntiDeute 67 theADeuteron = G4AntiDeuteron::AntiDeuteron();
66 theATriton = G4AntiTriton::AntiTriton( 68 theATriton = G4AntiTriton::AntiTriton();
67 theAAlpha = G4AntiAlpha::AntiAlpha(); 69 theAAlpha = G4AntiAlpha::AntiAlpha();
68 theAHe3 = G4AntiHe3::AntiHe3(); 70 theAHe3 = G4AntiHe3::AntiHe3();
69 71
70 theProton = G4Proton::Proton(); 72 theProton = G4Proton::Proton();
71 theNeutron = G4Neutron::Neutron(); 73 theNeutron = G4Neutron::Neutron();
72 theDeuteron = G4Deuteron::Deuteron(); 74 theDeuteron = G4Deuteron::Deuteron();
73 theAlpha = G4Alpha::Alpha(); 75 theAlpha = G4Alpha::Alpha();
74 76
75 G4CrossSectionDataSetRegistry* reg = G4Cross <<
76 cs = static_cast<G4ComponentAntiNuclNuclearX <<
77 if(!cs) { cs = new G4ComponentAntiNuclNuclea <<
78 77
>> 78 cs = new G4ComponentAntiNuclNuclearXS();
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 delete cs;
>> 97 }
96 98
97 ////////////////////////////////////////////// 99 ////////////////////////////////////////////////////////////////////////
98 // sample momentum transfer in the CMS system 100 // sample momentum transfer in the CMS system
99 G4double G4AntiNuclElastic::SampleInvariantT(c 101 G4double G4AntiNuclElastic::SampleInvariantT(const G4ParticleDefinition* particle,
100 G4double Plab, G4int Z, G4int 102 G4double Plab, G4int Z, G4int A)
101 { 103 {
102 G4double T; 104 G4double T;
103 G4double Mproj = particle->GetPDGMass(); 105 G4double Mproj = particle->GetPDGMass();
104 G4LorentzVector Pproj(0.,0.,Plab,std::sqrt(P 106 G4LorentzVector Pproj(0.,0.,Plab,std::sqrt(Plab*Plab+Mproj*Mproj));
105 G4double ctet1 = GetcosTeta1(Plab, A); 107 G4double ctet1 = GetcosTeta1(Plab, A);
106 108
107 G4double energy=Pproj.e()-Mproj; 109 G4double energy=Pproj.e()-Mproj;
108 110
109 const G4ParticleDefinition* theParticle = pa 111 const G4ParticleDefinition* theParticle = particle;
110 112
111 G4ParticleDefinition * theTargetDef = 0; << 113 G4ParticleDefinition * theDef = 0;
112 114
113 if (Z == 1 && A == 1) theTargetDef = th << 115 if(Z == 1 && A == 1) theDef = theProton;
114 else if (Z == 1 && A == 2) theTargetDef = th << 116 else if (Z == 1 && A == 2) theDef = theDeuteron;
115 else if (Z == 1 && A == 3) theTargetDef = G4 << 117 else if (Z == 1 && A == 3) theDef = G4Triton::Triton();
116 else if (Z == 2 && A == 3) theTargetDef = G4 << 118 else if (Z == 2 && A == 3) theDef = G4He3::He3();
117 else if (Z == 2 && A == 4) theTargetDef = th << 119 else if (Z == 2 && A == 4) theDef = theAlpha;
118 120
119 121
120 G4double TargMass =G4NucleiProperties::GetNu 122 G4double TargMass =G4NucleiProperties::GetNuclearMass(A,Z);
121 123
122 //transform to CMS 124 //transform to CMS
123 125
124 G4LorentzVector lv(0.0,0.0,0.0,TargMass); 126 G4LorentzVector lv(0.0,0.0,0.0,TargMass);
125 lv += Pproj; 127 lv += Pproj;
126 G4double S = lv.mag2()/(GeV*GeV); << 128 G4double S = lv.mag2()/GeV/GeV;
127 129
128 G4ThreeVector bst = lv.boostVector(); 130 G4ThreeVector bst = lv.boostVector();
129 Pproj.boost(-bst); 131 Pproj.boost(-bst);
130 132
131 G4ThreeVector p1 = Pproj.vect(); 133 G4ThreeVector p1 = Pproj.vect();
132 G4double ptot = p1.mag(); 134 G4double ptot = p1.mag();
133 135
134 fbst = bst; 136 fbst = bst;
135 fptot= ptot; 137 fptot= ptot;
136 fTmax = 4.0*ptot*ptot; // In (MeV/c)^2 << 138 fTmax = 4.0*ptot*ptot;
137 139
138 if(Plab < (std::abs(particle->GetBaryonNumbe << 140 if(Plab/std::abs(particle->GetBaryonNumber()) < 100.*MeV) // Uzhi 24 Nov. 2011
139 {return fTmax*G4UniformRand();} << 141 {return fTmax*G4UniformRand();} // Uzhi 24 Nov. 2011
140 142
141 // Calculation of NN collision properties <<
142 G4double PlabPerN = Plab/std::abs(theParticl <<
143 G4double NucleonMass = 0.5*( theProton->GetP <<
144 G4double PrNucleonMass(0.); // Projectile a <<
145 if( std::abs(theParticle->GetBaryonNumber()) <<
146 else <<
147 G4double energyPerN = std::sqrt( sqr(PlabPer <<
148 energyPerN -= PrNucleonMass; <<
149 //--- <<
150 <<
151 G4double Z1 = particle->GetPDGCharge(); 143 G4double Z1 = particle->GetPDGCharge();
152 G4double Z2 = Z; 144 G4double Z2 = Z;
153 145
154 G4double beta = CalculateParticleBeta(partic 146 G4double beta = CalculateParticleBeta(particle, ptot);
155 G4double n = CalculateZommerfeld( beta, Z1 147 G4double n = CalculateZommerfeld( beta, Z1, Z2 );
156 G4double Am = CalculateAm( ptot, n, Z2 ); 148 G4double Am = CalculateAm( ptot, n, Z2 );
157 fWaveVector = ptot; // /hbarc; 149 fWaveVector = ptot; // /hbarc;
158 150
159 G4LorentzVector Fproj(0.,0.,0.,0.); 151 G4LorentzVector Fproj(0.,0.,0.,0.);
160 const G4double mevToBarn = 0.38938e+6; << 152 G4double XsCoulomb = sqr(n/fWaveVector)*pi*(1+ctet1)/(1.+Am)/(1.+2.*Am-ctet1);
161 G4double XsCoulomb = mevToBarn*sqr(n/fWaveVe << 153 XsCoulomb=XsCoulomb*0.38938e+6;
>> 154
>> 155
>> 156 G4double XsElastHad =cs->GetElasticElementCrossSection(particle, energy, Z, (G4double)A);
>> 157 G4double XstotalHad =cs->GetTotalElementCrossSection(particle, energy, Z, (G4double)A);
162 158
163 G4double XsElastHadronic =cs->GetElasticElem <<
164 G4double XsTotalHadronic =cs->GetTotalElemen <<
165 159
166 XsElastHadronic/=millibarn; XsTotalHadronic/ << 160 XsElastHad/=millibarn; XstotalHad/=millibarn;
167 161
168 G4double CoulombProb = XsCoulomb/(XsCoulomb << 162
>> 163 G4double CoulombProb = XsCoulomb/(XsCoulomb+XsElastHad);
>> 164
>> 165 // G4cout<<" XselastHadron " << XsElastHad << " XsCol "<< XsCoulomb <<G4endl;
>> 166 // G4cout <<" XsTotal" << XstotalHad <<G4endl;
>> 167 // G4cout<<"XsInel"<< XstotalHad-XsElastHad<<G4endl;
169 168
170 if(G4UniformRand() < CoulombProb) 169 if(G4UniformRand() < CoulombProb)
171 { // Simulation of Coulomb scattering 170 { // Simulation of Coulomb scattering
172 171
173 G4double phi = twopi * G4UniformRand(); << 172 G4double phi = twopi * G4UniformRand();
174 G4double Ksi = G4UniformRand(); << 173 G4double Ksi = G4UniformRand();
175 174
176 G4double par1 = 2.*(1.+Am)/(1.+ctet1); << 175 G4double par1 = 2.*(1.+Am)/(1.+ctet1);
177 176
178 // ////sample ThetaCMS in Coulomb part << 177 // ////sample ThetaCMS in Coulomb part
179 178
180 G4double cosThetaCMS = (par1*ctet1- Ksi*(1 << 179 G4double cosThetaCMS = (par1*ctet1- Ksi*(1.+2.*Am))/(par1-Ksi);
181 180
182 G4double PtZ=ptot*cosThetaCMS; << 181 G4double PtZ=ptot*cosThetaCMS;
183 Fproj.setPz(PtZ); << 182 Fproj.setPz(PtZ);
184 G4double PtProjCMS = ptot*std::sqrt(1.0 - << 183 G4double PtProjCMS = ptot*std::sqrt(1.0 - cosThetaCMS*cosThetaCMS);
185 G4double PtX= PtProjCMS * std::cos(phi); << 184 G4double PtX= PtProjCMS * std::cos(phi);
186 G4double PtY= PtProjCMS * std::sin(phi); << 185 G4double PtY= PtProjCMS * std::sin(phi);
187 Fproj.setPx(PtX); << 186 Fproj.setPx(PtX);
188 Fproj.setPy(PtY); << 187 Fproj.setPy(PtY);
189 Fproj.setE(std::sqrt(PtX*PtX+PtY*PtY+PtZ*P << 188 Fproj.setE(std::sqrt(PtX*PtX+PtY*PtY+PtZ*PtZ+Mproj*Mproj));
190 T = -(Pproj-Fproj).mag2(); << 189 T = -(Pproj-Fproj).mag2();
191 } << 190 } else
192 else <<
193 { <<
194 // Simulation of strong interaction scatte <<
195 191
196 G4double Qmax = 2.*ptot/197.33; // in fm << 192 {
>> 193 ///////Simulation of strong interaction scattering////////////////////////////
197 194
198 G4double Amag = 1.0; // A1 in Majora << 195 // G4double Qmax = 2.*ptot*197.33; // in fm^-1
199 G4double SlopeMag = 0.5; // A2 in Majora << 196 G4double Qmax = 2.*3.0*197.33; // in fm^-1
200 << 197 G4double Amag = 70*70; // A1 in Magora funct:A1*exp(-q*A2)
201 G4double sig_pbarp = cs->GetAntiHadronNucl << 198 G4double SlopeMag = 2.*3.0; // A2 in Magora funct:A1*exp(-q*A2)
202 << 199
203 fRa = 1.113*G4Pow::GetInstance()->Z13(A) - << 200 G4double sig_pbarp= cs->GetAntiHadronNucleonTotCrSc(particle,energy);
204 0.227/G4Pow::GetInstance()->Z13(A); << 201
205 if(A == 3) fRa=1.81; << 202 fRa = 1.113*G4Pow::GetInstance()->Z13(A) -
206 if(A == 4) fRa=1.37; << 203 0.227/G4Pow::GetInstance()->Z13(A);
>> 204 if(A == 3) fRa=1.81;
>> 205 if(A == 4) fRa=1.37;
207 206
208 if((A>=12.) && (A<27) ) fRa=fRa*0.85; << 207 if((A>=12.) && (A<27) ) fRa=fRa*0.85;
209 if((A>=27.) && (A<48) ) fRa=fRa*0.90; << 208 if((A>=27.) && (A<48) ) fRa=fRa*0.90;
210 if((A>=48.) && (A<65) ) fRa=fRa*0.95; << 209 if((A>=48.) && (A<65) ) fRa=fRa*0.95;
211 << 210
212 G4double Ref2 = XsTotalHadronic/10./2./pi; << 211 G4double Ref2 = 0;
213 G4double ceff2 = 0.0; << 212 G4double ceff2 =0;
214 G4double rho = 0.0; << 213 G4double rho = 0;
215 << 214 if ((theParticle == theAProton) || (theParticle == theANeutron))
216 if ((theParticle == theAProton) || (thePa << 215 {
217 { << 216 if(theDef == theProton)
218 if(theTargetDef == theProton) << 217 {
219 { << 218 // G4double Mp2=sqr(theDef->GetPDGMass()/GeV );
220 // Determination of the real part of P << 219
221 if(Plab < 610.) << 220 // change 30 October
222 { rho = 1.3347-10.342*Plab/1000.+22.27 << 221
223 13.634*Plab/1000.*Plab/1000.*P << 222 if(Plab < 610.)
224 if((Plab < 5500.)&&(Plab >= 610.) ) << 223 { rho = 1.3347-10.342*Plab/1000.+22.277*Plab/1000.*Plab/1000.-
225 { rho = 0.22; } << 224 13.634*Plab/1000.*Plab/1000.*Plab/1000. ;}
226 if((Plab >= 5500.)&&(Plab < 12300.) ) << 225 if((Plab < 5500.)&&(Plab >= 610.) )
227 { rho = -0.32; } << 226 { rho = 0.22; }
228 if( Plab >= 12300.) << 227 if((Plab >= 5500.)&&(Plab < 12300.) )
229 { rho = 0.135-2.26/(std::sqrt(S)) ;} << 228 { rho = -0.32; }
230 Ref2 = 0.35 + 0.9/std::sqrt(std::sqrt << 229 if( Plab >= 12300.)
231 ceff2 = 0.375 - 2./S + 0.44/(sqr(S-4.) << 230 { rho = 0.135-2.26/(std::sqrt(S)) ;}
232 Ref2 =Ref2*Ref2; << 231
233 ceff2 = ceff2*ceff2; << 232 Ref2 = 0.35 + 0.9/std::sqrt(std::sqrt(S-4.*0.88))+0.04*G4Log(S) ;
234 } << 233 ceff2 = 0.375 - 2./S + 0.44/(sqr(S-4.)+1.5) ;
235 << 234
236 if( (Z==1)&&(A==2) ) << 235 /*
237 { << 236 Ref2=0.8/std::sqrt(std::sqrt(S-4.*Mp2)) + 0.55;
238 Ref2 = fRa*fRa - 0.28 + 0.019 * sig_pb << 237 if(S>1000.) Ref2=0.62+0.02*G4Log(S) ;
239 ceff2 = 0.297 + 7.853e-04*sig_pbarp + << 238 ceff2 = 0.035/(sqr(S-4.3)+0.4) + 0.085 * G4Log(S) ;
240 } << 239 if(S>1000.) ceff2 = 0.005 * G4Log(S) + 0.29;
241 if( (Z==1)&&(A==3) ) << 240 */
242 { << 241
243 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pb << 242 Ref2=Ref2*Ref2;
244 ceff2 = 0.149 + 7.091e-04*sig_pbarp + << 243 ceff2 = ceff2*ceff2;
245 } << 244
246 if( (Z==2)&&(A==3) ) << 245 SlopeMag = 0.5; // Uzhi
247 { << 246 Amag= 1.; // Uzhi
248 Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pb << 247 }
249 ceff2 = 0.149 + 7.091e-04*sig_pbarp + << 248
250 } << 249 if(Z>2)
251 if( (Z==2)&&(A==4) ) << 250 { Ref2 = fRa*fRa +2.48*0.01*sig_pbarp*fRa - 2.23e-6*sig_pbarp*sig_pbarp*fRa*fRa;
252 { << 251 ceff2 = 0.16+3.3e-4*sig_pbarp+0.35*G4Exp(-0.03*sig_pbarp);
253 Ref2 = fRa*fRa -0.46 +0.03*sig_pbarp - << 252 }
254 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0. << 253 if( (Z==2)&&(A==4) )
255 } << 254 { Ref2 = fRa*fRa -0.46 +0.03*sig_pbarp - 2.98e-6*sig_pbarp*sig_pbarp;
256 if(Z>2) << 255 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0.3359*G4Exp(-0.03*sig_pbarp);
257 { << 256 }
258 Ref2 = fRa*fRa +2.48*0.01*sig_pbarp*fR << 257 if( (Z==1)&&(A==3) )
259 ceff2 = 0.16+3.3e-4*sig_pbarp+0.35*G4E << 258 { Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pbarp - 3.69e-7 * sig_pbarp*sig_pbarp;
260 } << 259 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
261 } // End of if ((theParticle == theAProto << 260 }
262 << 261 if( (Z==2)&&(A==3) )
263 if (theParticle == theADeuteron) << 262 { Ref2 = fRa*fRa - 1.36 + 0.025 * sig_pbarp - 3.69e-7 * sig_pbarp*sig_pbarp;
264 { << 263 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
265 if(theTargetDef == theProton) << 264 }
266 { << 265 if( (Z==1)&&(A==2) )
267 ceff2 = 0.297 + 7.853e-04*sig_pbarp + << 266 {
268 } << 267 Ref2 = fRa*fRa - 0.28 + 0.019 * sig_pbarp + 2.06e-6 * sig_pbarp*sig_pbarp;
269 if(theTargetDef == theDeuteron) << 268 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 0.2899*G4Exp(-0.03*sig_pbarp);
270 { << 269 }
271 ceff2 = 0.65 + 3.0e-4*sig_pbarp + 0.55 << 270 }
272 } << 271
273 if( (theTargetDef == G4Triton::Triton()) << 272 if (theParticle == theADeuteron)
274 { << 273 {
275 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 << 274 sig_pbarp= cs->GetAntiHadronNucleonTotCrSc(particle,energy/2.);
276 } << 275 Ref2 = XstotalHad/10./2./pi ;
277 if(theTargetDef == theAlpha) << 276 if(Z>2)
278 { << 277 {
279 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.4 << 278 ceff2 = 0.38 + 2.0e-4 *sig_pbarp + 0.5 * G4Exp(-0.03*sig_pbarp);
280 } << 279 }
281 if(Z>2) << 280 if(theDef == theProton)
282 { << 281 {
283 ceff2 = 0.38 + 2.0e-4 *sig_pbarp + 0.5 << 282 ceff2 = 0.297 + 7.853e-04*sig_pbarp + 0.2899*G4Exp(-0.03*sig_pbarp);
284 } << 283 }
285 } << 284 if(theDef == theDeuteron)
286 << 285 {
287 if( (theParticle ==theAHe3) || (theParticl << 286 ceff2 = 0.65 + 3.0e-4*sig_pbarp + 0.55 * G4Exp(-0.03*sig_pbarp);
288 { << 287 }
289 if(theTargetDef == theProton) << 288 if( (theDef == G4Triton::Triton()) || (theDef == G4He3::He3() ) )
290 { << 289 {
291 ceff2 = 0.149 + 7.091e-04*sig_pbarp + << 290 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 * G4Exp(-0.02*sig_pbarp);
292 } << 291 }
293 if(theTargetDef == theDeuteron) << 292 if(theDef == theAlpha)
294 { << 293 {
295 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 << 294 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.45 * G4Exp(-0.02*sig_pbarp);
296 } << 295 }
297 if( (theTargetDef == G4Triton::Triton()) << 296 }
298 { << 297
299 ceff2 = 0.39 + 2.7e-4*sig_pbarp + 0.7 << 298 if( (theParticle ==theAHe3) || (theParticle ==theATriton) )
300 } << 299 {
301 if(theTargetDef == theAlpha) << 300 sig_pbarp = cs->GetAntiHadronNucleonTotCrSc(particle,energy/3.);
302 { << 301 Ref2 = XstotalHad/10./2./pi ;
303 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 << 302 if(Z>2)
304 } << 303 {
305 if(Z>2) << 304 ceff2 = 0.26 + 2.2e-4*sig_pbarp + 0.33*G4Exp(-0.03*sig_pbarp);
306 { << 305 }
307 ceff2 = 0.26 + 2.2e-4*sig_pbarp + 0.33 << 306 if(theDef == theProton)
308 } << 307 {
309 } << 308 ceff2 = 0.149 + 7.091e-04*sig_pbarp + 0.3743*G4Exp(-0.03*sig_pbarp);
310 << 309 }
311 if ( (theParticle == theAAlpha) || (ceff2 << 310 if(theDef == theDeuteron)
312 { << 311 {
313 if(theTargetDef == theProton) << 312 ceff2 = 0.57 + 2.5e-4*sig_pbarp + 0.65 * G4Exp(-0.02*sig_pbarp);
314 { << 313 }
315 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0. << 314 if( (theDef == G4Triton::Triton()) || (theDef == G4He3::He3() ) )
316 } << 315 {
317 if(theTargetDef == theDeuteron) << 316 ceff2 = 0.39 + 2.7e-4*sig_pbarp + 0.7 * G4Exp(-0.02*sig_pbarp);
318 { << 317 }
319 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.4 << 318 if(theDef == theAlpha)
320 } << 319 {
321 if( (theTargetDef == G4Triton::Triton()) << 320 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 * G4Exp(-0.03*sig_pbarp);
322 { << 321 }
323 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 << 322 }
324 } << 323
325 if(theTargetDef == theAlpha) << 324
326 { << 325 if (theParticle == theAAlpha)
327 ceff2 = 0.17 + 3.5e-4*sig_pbarp + 0.45 << 326 {
328 } << 327 sig_pbarp = cs->GetAntiHadronNucleonTotCrSc(particle,energy/3.);
329 if(Z>2) << 328 Ref2 = XstotalHad/10./2./pi ;
330 { << 329 if(Z>2)
331 ceff2 = 0.22 + 2.0e-4*sig_pbarp + 0.2 << 330 {
332 } << 331 ceff2 = 0.22 + 2.0e-4*sig_pbarp + 0.2 * G4Exp(-0.03*sig_pbarp);
333 } << 332 }
334 << 333 if(theDef == theProton)
335 fRef=std::sqrt(Ref2); << 334 {
336 fceff = std::sqrt(ceff2); << 335 ceff2= 0.078 + 6.657e-4*sig_pbarp + 0.3359*G4Exp(-0.03*sig_pbarp);
337 << 336 }
338 G4double Q = 0.0 ; << 337 if(theDef == theDeuteron)
339 G4double BracFunct; << 338 {
340 << 339 ceff2 = 0.40 + 3.5e-4 *sig_pbarp + 0.45 * G4Exp(-0.02*sig_pbarp);
341 const G4int maxNumberOfLoops = 10000; << 340 }
342 G4int loopCounter = 0; << 341 if( (theDef == G4Triton::Triton()) || (theDef == G4He3::He3() ) )
343 do << 342 {
344 { << 343 ceff2 = 0.24 + 3.5e-4*sig_pbarp + 0.75 * G4Exp(-0.03*sig_pbarp);
345 Q = -G4Log(1.-(1.- G4Exp(-SlopeMag * Qma << 344 }
346 G4double x = fRef * Q; << 345 if(theDef == theAlpha)
347 BracFunct = ( ( sqr(BesselOneByArg(x))+s << 346 {
348 * sqr(DampFactor(pi*fceff*Q))) /(Ama << 347 ceff2 = 0.17 + 3.5e-4*sig_pbarp + 0.45 * G4Exp(-0.03*sig_pbarp);
349 BracFunct = BracFunct * Q; <<
350 } <<
351 while ( (G4UniformRand()>BracFunct) && <<
352 ++loopCounter < maxNumberOfLoops ) <<
353 if ( loopCounter >= maxNumberOfLoops ) { <<
354 fTetaCMS = 0.0; <<
355 return 0.0; <<
356 } 348 }
>> 349 }
357 350
358 T= sqr(Q); << 351 fRef=std::sqrt(Ref2);
359 T*=3.893913e+4; // fm^(-2) -> MeV^2 << 352 fceff = std::sqrt(ceff2);
>> 353 // G4cout<<" Ref "<<fRef<<" c_eff "<<fceff<< " rho "<< rho<<G4endl;
360 354
361 } // End of simulation of strong interactio << 355
>> 356 G4double Q = 0.0 ;
>> 357 G4double BracFunct;
>> 358 const G4int maxNumberOfLoops = 10000;
>> 359 G4int loopCounter = 0;
>> 360 do
>> 361 {
>> 362 Q = -G4Log(1.-(1.- G4Exp(-SlopeMag * Qmax))* G4UniformRand() )/SlopeMag;
>> 363 G4double x = fRef * Q;
>> 364 BracFunct = ( ( sqr(BesselOneByArg(x))+sqr(rho/2. * BesselJzero(x)) )
>> 365 * sqr(DampFactor(pi*fceff*Q))) /(Amag*G4Exp(-SlopeMag*Q));
>> 366
>> 367 BracFunct = BracFunct * Q * sqr(sqr(fRef));
>> 368 }
>> 369 while ( (G4UniformRand()>BracFunct) &&
>> 370 ++loopCounter < maxNumberOfLoops ); /* Loop checking, 10.08.2015, A.Ribon */
>> 371 if ( loopCounter >= maxNumberOfLoops ) {
>> 372 fTetaCMS = 0.0;
>> 373 return 0.0;
>> 374 }
>> 375
>> 376 T= sqr(Q);
>> 377 T*=3.893913e+4; // fm -> MeV^2
>> 378 }
>> 379
>> 380 G4double cosTet=1.0-T/(2.*ptot*ptot);
>> 381 if(cosTet > 1.0 ) cosTet= 1.; // Uzhi 30 Nov.
>> 382 if(cosTet < -1.0 ) cosTet=-1.; // Uzhi 30 Nov.
>> 383 fTetaCMS=std::acos(cosTet);
362 384
363 return T; << 385 return T;
364 } 386 }
365 387
366 ////////////////////////////////////////////// 388 /////////////////////////////////////////////////////////////////////
367 // Sample of Theta in CMS 389 // Sample of Theta in CMS
368 G4double G4AntiNuclElastic::SampleThetaCMS(co 390 G4double G4AntiNuclElastic::SampleThetaCMS(const G4ParticleDefinition* p, G4double plab,
369 391 G4int Z, G4int A)
370 { 392 {
371 G4double T; 393 G4double T;
372 T = SampleInvariantT( p, plab, Z, A); 394 T = SampleInvariantT( p, plab, Z, A);
373 395
374 // NaN finder 396 // NaN finder
375 if(!(T < 0.0 || T >= 0.0)) 397 if(!(T < 0.0 || T >= 0.0))
376 { 398 {
377 if (verboseLevel > 0) 399 if (verboseLevel > 0)
378 { 400 {
379 G4cout << "G4DiffuseElastic:WARNING: A = 401 G4cout << "G4DiffuseElastic:WARNING: A = " << A
380 << " mom(GeV)= " << plab/GeV 402 << " mom(GeV)= " << plab/GeV
381 << " S-wave will be sampled" 403 << " S-wave will be sampled"
382 << G4endl; 404 << G4endl;
383 } 405 }
384 T = G4UniformRand()*fTmax; 406 T = G4UniformRand()*fTmax;
385 407
386 } 408 }
387 409
388 if(fptot > 0.) << 410 if(fptot > 0.) // Uzhi 24 Nov. 2011
389 { 411 {
390 G4double cosTet=1.0-T/(2.*fptot*fptot); 412 G4double cosTet=1.0-T/(2.*fptot*fptot);
391 if(cosTet > 1.0 ) cosTet= 1.; << 413 if(cosTet > 1.0 ) cosTet= 1.; // Uzhi 30 Nov.
392 if(cosTet < -1.0 ) cosTet=-1.; << 414 if(cosTet < -1.0 ) cosTet=-1.; // Uzhi 30 Nov.
393 fTetaCMS=std::acos(cosTet); 415 fTetaCMS=std::acos(cosTet);
394 return fTetaCMS; 416 return fTetaCMS;
395 } else << 417 } else // Uzhi 24 Nov. 2011
396 { << 418 { // Uzhi 24 Nov. 2011
397 return 2.*G4UniformRand()-1.; << 419 return 2.*G4UniformRand()-1.; // Uzhi 24 Nov. 2011
398 } << 420 } // Uzhi 24 Nov. 2011
399 } 421 }
400 422
401 423
402 ////////////////////////////////////////////// 424 /////////////////////////////////////////////////////////////////////
403 // Sample of Theta in Lab System 425 // Sample of Theta in Lab System
404 G4double G4AntiNuclElastic::SampleThetaLab(co 426 G4double G4AntiNuclElastic::SampleThetaLab(const G4ParticleDefinition* p, G4double plab,
405 427 G4int Z, G4int A)
406 { 428 {
407 G4double T; 429 G4double T;
408 T = SampleInvariantT( p, plab, Z, A); 430 T = SampleInvariantT( p, plab, Z, A);
409 431
410 // NaN finder 432 // NaN finder
411 if(!(T < 0.0 || T >= 0.0)) 433 if(!(T < 0.0 || T >= 0.0))
412 { 434 {
413 if (verboseLevel > 0) 435 if (verboseLevel > 0)
414 { 436 {
415 G4cout << "G4DiffuseElastic:WARNING: A = 437 G4cout << "G4DiffuseElastic:WARNING: A = " << A
416 << " mom(GeV)= " << plab/GeV 438 << " mom(GeV)= " << plab/GeV
417 << " S-wave will be sampled" 439 << " S-wave will be sampled"
418 << G4endl; 440 << G4endl;
419 } 441 }
420 T = G4UniformRand()*fTmax; 442 T = G4UniformRand()*fTmax;
421 } 443 }
422 444
423 G4double phi = G4UniformRand()*twopi; 445 G4double phi = G4UniformRand()*twopi;
424 446
425 G4double cost(1.); 447 G4double cost(1.);
426 if(fTmax > 0.) {cost = 1. - 2.0*T/fTmax;} << 448 if(fTmax > 0.) {cost = 1. - 2.0*T/fTmax;} // Uzhi 24 Nov. 2011
427 449
428 G4double sint; 450 G4double sint;
429 if( cost >= 1.0 ) 451 if( cost >= 1.0 )
430 { 452 {
431 cost = 1.0; 453 cost = 1.0;
432 sint = 0.0; 454 sint = 0.0;
433 } 455 }
434 else if( cost <= -1.0) 456 else if( cost <= -1.0)
435 { 457 {
436 cost = -1.0; 458 cost = -1.0;
437 sint = 0.0; 459 sint = 0.0;
438 } 460 }
439 else 461 else
440 { 462 {
441 sint = std::sqrt((1.0-cost)*(1.0+cost)); 463 sint = std::sqrt((1.0-cost)*(1.0+cost));
442 } 464 }
443 465
444 G4double m1 = p->GetPDGMass(); 466 G4double m1 = p->GetPDGMass();
445 G4ThreeVector v(sint*std::cos(phi),sint*std: 467 G4ThreeVector v(sint*std::cos(phi),sint*std::sin(phi),cost);
446 v *= fptot; 468 v *= fptot;
447 G4LorentzVector nlv(v.x(),v.y(),v.z(),std::s 469 G4LorentzVector nlv(v.x(),v.y(),v.z(),std::sqrt(fptot*fptot + m1*m1));
448 470
449 nlv.boost(fbst); 471 nlv.boost(fbst);
450 472
451 G4ThreeVector np = nlv.vect(); 473 G4ThreeVector np = nlv.vect();
452 G4double theta = np.theta(); 474 G4double theta = np.theta();
453 fThetaLab = theta; 475 fThetaLab = theta;
454 476
455 return theta; 477 return theta;
456 } 478 }
457 479
458 ////////////////////////////////////////////// 480 ////////////////////////////////////////////////////////////////////
459 // Calculation of Damp factor 481 // Calculation of Damp factor
460 G4double G4AntiNuclElastic::DampFactor(G4doub 482 G4double G4AntiNuclElastic::DampFactor(G4double x)
461 { 483 {
462 G4double df; 484 G4double df;
463 G4double f3 = 6.; // first factorials 485 G4double f3 = 6.; // first factorials
464 486
465 if( std::fabs(x) < 0.01 ) 487 if( std::fabs(x) < 0.01 )
466 { 488 {
467 df=1./(1.+x*x/f3); 489 df=1./(1.+x*x/f3);
468 } 490 }
469 else 491 else
470 { 492 {
471 df = x/std::sinh(x); 493 df = x/std::sinh(x);
472 } 494 }
473 return df; 495 return df;
474 } 496 }
475 497
476 498
477 ////////////////////////////////////////////// 499 /////////////////////////////////////////////////////////////////////////////////
478 // Calculation of particle velocity Beta 500 // Calculation of particle velocity Beta
479 501
480 G4double G4AntiNuclElastic::CalculateParticle 502 G4double G4AntiNuclElastic::CalculateParticleBeta( const G4ParticleDefinition* particle,
481 G4double mom 503 G4double momentum )
482 { 504 {
483 G4double mass = particle->GetPDGMass(); 505 G4double mass = particle->GetPDGMass();
484 G4double a = momentum/mass; 506 G4double a = momentum/mass;
485 fBeta = a/std::sqrt(1+a*a); 507 fBeta = a/std::sqrt(1+a*a);
486 508
487 return fBeta; 509 return fBeta;
488 } 510 }
489 511
490 512
491 ////////////////////////////////////////////// 513 ///////////////////////////////////////////////////////////////////////////////////
492 // Calculation of parameter Zommerfeld 514 // Calculation of parameter Zommerfeld
493 515
494 G4double G4AntiNuclElastic::CalculateZommerfe 516 G4double G4AntiNuclElastic::CalculateZommerfeld( G4double beta, G4double Z1, G4double Z2 )
495 { 517 {
496 fZommerfeld = fine_structure_const*Z1*Z2/bet 518 fZommerfeld = fine_structure_const*Z1*Z2/beta;
497 519
498 return fZommerfeld; 520 return fZommerfeld;
499 } 521 }
500 522
501 ////////////////////////////////////////////// 523 ////////////////////////////////////////////////////////////////////////////////////
502 // 524 //
503 G4double G4AntiNuclElastic::CalculateAm( G4dou 525 G4double G4AntiNuclElastic::CalculateAm( G4double momentum, G4double n, G4double Z)
504 { 526 {
505 G4double k = momentum/hbarc; 527 G4double k = momentum/hbarc;
506 G4double ch = 1.13 + 3.76*n*n; 528 G4double ch = 1.13 + 3.76*n*n;
507 G4double zn = 1.77*k/G4Pow::GetInstance()-> 529 G4double zn = 1.77*k/G4Pow::GetInstance()->A13(Z)*Bohr_radius;
508 G4double zn2 = zn*zn; 530 G4double zn2 = zn*zn;
509 fAm = ch/zn2; 531 fAm = ch/zn2;
510 532
511 return fAm; 533 return fAm;
512 } 534 }
513 535
514 ////////////////////////////////////////////// 536 /////////////////////////////////////////////////////////////
515 // 537 //
516 // Bessel J0 function based on rational approx 538 // Bessel J0 function based on rational approximation from
517 // J.F. Hart, Computer Approximations, New Yor 539 // J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
518 540
519 G4double G4AntiNuclElastic::BesselJzero(G4doub 541 G4double G4AntiNuclElastic::BesselJzero(G4double value)
520 { 542 {
521 G4double modvalue, value2, fact1, fact2, arg 543 G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
522 544
523 modvalue = std::fabs(value); 545 modvalue = std::fabs(value);
524 546
525 if ( value < 8.0 && value > -8.0 ) 547 if ( value < 8.0 && value > -8.0 )
526 { 548 {
527 value2 = value*value; 549 value2 = value*value;
528 550
529 fact1 = 57568490574.0 + value2*(-13362590 551 fact1 = 57568490574.0 + value2*(-13362590354.0
530 + value2*( 65161964 552 + value2*( 651619640.7
531 + value2*(-11214424 553 + value2*(-11214424.18
532 + value2*( 77392.33 554 + value2*( 77392.33017
533 + value2*(-184.9052 555 + value2*(-184.9052456 ) ) ) ) );
534 556
535 fact2 = 57568490411.0 + value2*( 10295329 557 fact2 = 57568490411.0 + value2*( 1029532985.0
536 + value2*( 9494680. 558 + value2*( 9494680.718
537 + value2*(59272.648 559 + value2*(59272.64853
538 + value2*(267.85327 560 + value2*(267.8532712
539 + value2*1.0 561 + value2*1.0 ) ) ) );
540 562
541 bessel = fact1/fact2; 563 bessel = fact1/fact2;
542 } 564 }
543 else 565 else
544 { 566 {
545 arg = 8.0/modvalue; 567 arg = 8.0/modvalue;
546 568
547 value2 = arg*arg; 569 value2 = arg*arg;
548 570
549 shift = modvalue-0.785398164; 571 shift = modvalue-0.785398164;
550 572
551 fact1 = 1.0 + value2*(-0.1098628627e-2 573 fact1 = 1.0 + value2*(-0.1098628627e-2
552 + value2*(0.2734510407e-4 574 + value2*(0.2734510407e-4
553 + value2*(-0.2073370639e-5 575 + value2*(-0.2073370639e-5
554 + value2*0.2093887211e-6 ) 576 + value2*0.2093887211e-6 ) ) );
555 fact2 = -0.1562499995e-1 + value2*(0.143048 577 fact2 = -0.1562499995e-1 + value2*(0.1430488765e-3
556 + value2*(-0.691 578 + value2*(-0.6911147651e-5
557 + value2*(0.7621 579 + value2*(0.7621095161e-6
558 - value2*0.93494 580 - value2*0.934945152e-7 ) ) );
559 581
560 bessel = std::sqrt(0.636619772/modvalue)*( 582 bessel = std::sqrt(0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2);
561 } 583 }
562 return bessel; 584 return bessel;
563 } 585 }
564 586
565 587
566 ////////////////////////////////////////////// 588 //////////////////////////////////////////////////////////////////////////////
567 // Bessel J1 function based on rational approx 589 // Bessel J1 function based on rational approximation from
568 // J.F. Hart, Computer Approximations, New Yor 590 // J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
569 591
570 G4double G4AntiNuclElastic::BesselJone(G4doub 592 G4double G4AntiNuclElastic::BesselJone(G4double value)
571 { 593 {
572 G4double modvalue, value2, fact1, fact2, arg 594 G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
573 595
574 modvalue = std::fabs(value); 596 modvalue = std::fabs(value);
575 597
576 if ( modvalue < 8.0 ) 598 if ( modvalue < 8.0 )
577 { 599 {
578 value2 = value*value; 600 value2 = value*value;
579 fact1 = value*(72362614232.0 + value2*(-7 601 fact1 = value*(72362614232.0 + value2*(-7895059235.0
580 + value2*( 2 602 + value2*( 242396853.1
581 + value2*(-2 603 + value2*(-2972611.439
582 + value2*( 1 604 + value2*( 15704.48260
583 + value2*(-3 605 + value2*(-30.16036606 ) ) ) ) ) );
584 606
585 fact2 = 144725228442.0 + value2*(23005351 607 fact2 = 144725228442.0 + value2*(2300535178.0
586 + value2*(18583304 608 + value2*(18583304.74
587 + value2*(99447.43 609 + value2*(99447.43394
588 + value2*(376.9991 610 + value2*(376.9991397
589 + value2*1.0 611 + value2*1.0 ) ) ) );
590 bessel = fact1/fact2; 612 bessel = fact1/fact2;
591 } 613 }
592 else 614 else
593 { 615 {
594 arg = 8.0/modvalue; 616 arg = 8.0/modvalue;
595 value2 = arg*arg; 617 value2 = arg*arg;
596 618
597 shift = modvalue - 2.356194491; 619 shift = modvalue - 2.356194491;
598 620
599 fact1 = 1.0 + value2*( 0.183105e-2 621 fact1 = 1.0 + value2*( 0.183105e-2
600 + value2*(-0.3516396496e-4 622 + value2*(-0.3516396496e-4
601 + value2*(0.2457520174e-5 623 + value2*(0.2457520174e-5
602 + value2*(-0.240337019e-6 624 + value2*(-0.240337019e-6 ) ) ) );
603 625
604 fact2 = 0.04687499995 + value2*(-0.2002690 626 fact2 = 0.04687499995 + value2*(-0.2002690873e-3
605 + value2*( 0.8449199 627 + value2*( 0.8449199096e-5
606 + value2*(-0.8822898 628 + value2*(-0.88228987e-6
607 + value2*0.105787412 629 + value2*0.105787412e-6 ) ) );
608 630
609 bessel = std::sqrt( 0.636619772/modvalue)* 631 bessel = std::sqrt( 0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2);
610 if (value < 0.0) bessel = -bessel; 632 if (value < 0.0) bessel = -bessel;
611 } 633 }
612 return bessel; 634 return bessel;
613 } 635 }
614 636
615 ////////////////////////////////////////////// 637 ////////////////////////////////////////////////////////////////////////////////
616 // return J1(x)/x with special case for small 638 // return J1(x)/x with special case for small x
617 G4double G4AntiNuclElastic::BesselOneByArg(G4d 639 G4double G4AntiNuclElastic::BesselOneByArg(G4double x)
618 { 640 {
619 G4double x2, result; 641 G4double x2, result;
620 642
621 if( std::fabs(x) < 0.01 ) 643 if( std::fabs(x) < 0.01 )
622 { 644 {
623 x *= 0.5; 645 x *= 0.5;
624 x2 = x*x; 646 x2 = x*x;
625 result = (2.- x2 + x2*x2/6.)/4.; 647 result = (2.- x2 + x2*x2/6.)/4.;
626 } 648 }
627 else 649 else
628 { 650 {
629 result = BesselJone(x)/x; 651 result = BesselJone(x)/x;
630 } 652 }
631 return result; 653 return result;
632 } 654 }
633 655
634 ////////////////////////////////////////////// 656 /////////////////////////////////////////////////////////////////////////////////
635 // return angle from which Coulomb scattering 657 // return angle from which Coulomb scattering is calculated
636 G4double G4AntiNuclElastic::GetcosTeta1(G4doub 658 G4double G4AntiNuclElastic::GetcosTeta1(G4double plab, G4int A)
637 { 659 {
638 660
639 // G4double p0 =G4LossTableManager::Instance() 661 // G4double p0 =G4LossTableManager::Instance()->FactorForAngleLimit()*CLHEP::hbarc/CLHEP::fermi;
640 G4double p0 = 1.*hbarc/fermi; 662 G4double p0 = 1.*hbarc/fermi;
641 //G4double cteta1 = 1.0 - p0*p0/2.0 * pow(A,2. 663 //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 664 G4double cteta1 = 1.0 - p0*p0/2.0 * G4Pow::GetInstance()->Z23(A)/(plab*plab);
643 ////////////////// 665 //////////////////
644 if(cteta1 < -1.) cteta1 = -1.0; 666 if(cteta1 < -1.) cteta1 = -1.0;
645 return cteta1; 667 return cteta1;
646 } 668 }
647 669
648 670
649 671
650 672
651 673
652 674
653 675
654 676