Geant4 9.6.0
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | Static Public Member Functions | List of all members
G4ChipsProtonElasticXS Class Reference

#include <G4ChipsProtonElasticXS.hh>

+ Inheritance diagram for G4ChipsProtonElasticXS:

Public Member Functions

 G4ChipsProtonElasticXS ()
 
 ~G4ChipsProtonElasticXS ()
 
virtual G4bool IsIsoApplicable (const G4DynamicParticle *Pt, G4int Z, G4int A, const G4Element *elm, const G4Material *mat)
 
virtual G4double GetIsoCrossSection (const G4DynamicParticle *, G4int tgZ, G4int A, const G4Isotope *iso=0, const G4Element *elm=0, const G4Material *mat=0)
 
virtual G4double GetChipsCrossSection (G4double momentum, G4int Z, G4int N, G4int pdg)
 
G4double GetExchangeT (G4int tZ, G4int tN, G4int pPDG)
 
G4double GetHMaxT ()
 
- Public Member Functions inherited from G4VCrossSectionDataSet
 G4VCrossSectionDataSet (const G4String &nam="")
 
virtual ~G4VCrossSectionDataSet ()
 
virtual G4bool IsElementApplicable (const G4DynamicParticle *, G4int Z, const G4Material *mat=0)
 
virtual G4bool IsIsoApplicable (const G4DynamicParticle *, G4int Z, G4int A, const G4Element *elm=0, const G4Material *mat=0)
 
G4double GetCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=0)
 
G4double ComputeCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=0)
 
virtual G4double GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *mat=0)
 
virtual G4double GetIsoCrossSection (const G4DynamicParticle *, G4int Z, G4int A, const G4Isotope *iso=0, const G4Element *elm=0, const G4Material *mat=0)
 
virtual G4Isotope * SelectIsotope (const G4Element *, G4double kinEnergy)
 
virtual void BuildPhysicsTable (const G4ParticleDefinition &)
 
virtual void DumpPhysicsTable (const G4ParticleDefinition &)
 
virtual void CrossSectionDescription (std::ostream &) const
 
void SetVerboseLevel (G4int value)
 
G4double GetMinKinEnergy () const
 
void SetMinKinEnergy (G4double value)
 
G4double GetMaxKinEnergy () const
 
void SetMaxKinEnergy (G4double value)
 
const G4String & GetName () const
 

Static Public Member Functions

static const char * Default_Name ()
 

Additional Inherited Members

- Protected Member Functions inherited from G4VCrossSectionDataSet
void SetName (const G4String &)
 
- Protected Attributes inherited from G4VCrossSectionDataSet
G4int verboseLevel
 

Detailed Description

Definition at line 46 of file G4ChipsProtonElasticXS.hh.

Constructor & Destructor Documentation

◆ G4ChipsProtonElasticXS()

G4ChipsProtonElasticXS::G4ChipsProtonElasticXS ( )

Definition at line 55 of file G4ChipsProtonElasticXS.cc.

55 :G4VCrossSectionDataSet(Default_Name()), nPoints(128), nLast(nPoints-1)
56{
57 // Initialization of the parameters
58 lPMin=-8.; // Min tabulated logarithmicMomentum(D)
59 lPMax= 8.; // Max tabulated logarithmicMomentum(D)
60 dlnP=(lPMax-lPMin)/nLast;// LogStep in the table(D)
61 onlyCS=false;// Flag toCalculateOnlyCS(not Si/Bi)(L)
62 lastSIG=0.; // Last calculated cross section (L)
63 lastLP=-10.;// Last log(mom_ofTheIncidentHadron)(L)
64 lastTM=0.; // Last t_maximum (L)
65 theSS=0.; // The Last sq.slope of 1st difr.Max(L)
66 theS1=0.; // The Last mantissa of 1st difr.Max(L)
67 theB1=0.; // The Last slope of 1st difruct.Max(L)
68 theS2=0.; // The Last mantissa of 2nd difr.Max(L)
69 theB2=0.; // The Last slope of 2nd difruct.Max(L)
70 theS3=0.; // The Last mantissa of 3d difr. Max(L)
71 theB3=0.; // The Last slope of 3d difruct. Max(L)
72 theS4=0.; // The Last mantissa of 4th difr.Max(L)
73 theB4=0.; // The Last slope of 4th difruct.Max(L)
74 lastTZ=0; // Last atomic number of the target
75 lastTN=0; // Last # of neutrons in the target
76 lastPIN=0.; // Last initialized max momentum
77 lastCST=0; // Elastic cross-section table
78 lastPAR=0; // Parameters for FunctionalCalculation
79 lastSST=0; // E-dep of sq.slope of the 1st dif.Max
80 lastS1T=0; // E-dep of mantissa of the 1st dif.Max
81 lastB1T=0; // E-dep of the slope of the 1st difMax
82 lastS2T=0; // E-dep of mantissa of the 2nd difrMax
83 lastB2T=0; // E-dep of the slope of the 2nd difMax
84 lastS3T=0; // E-dep of mantissa of the 3d difr.Max
85 lastB3T=0; // E-dep of the slope of the 3d difrMax
86 lastS4T=0; // E-dep of mantissa of the 4th difrMax
87 lastB4T=0; // E-dep of the slope of the 4th difMax
88 lastN=0; // The last N of calculated nucleus
89 lastZ=0; // The last Z of calculated nucleus
90 lastP=0.; // Last used in cross section Momentum
91 lastTH=0.; // Last threshold momentum
92 lastCS=0.; // Last value of the Cross Section
93 lastI=0; // The last position in the DAMDB
94}
G4ChipsProtonElasticXS::Default_Name
static const char * Default_Name()
Definition: G4ChipsProtonElasticXS.hh:54

◆ ~G4ChipsProtonElasticXS()

G4ChipsProtonElasticXS::~G4ChipsProtonElasticXS ( )

Definition at line 97 of file G4ChipsProtonElasticXS.cc.

98{
99 std::vector<G4double*>::iterator pos;
100 for (pos=CST.begin(); pos<CST.end(); pos++)
101 { delete [] *pos; }
102 CST.clear();
103 for (pos=PAR.begin(); pos<PAR.end(); pos++)
104 { delete [] *pos; }
105 PAR.clear();
106 for (pos=SST.begin(); pos<SST.end(); pos++)
107 { delete [] *pos; }
108 SST.clear();
109 for (pos=S1T.begin(); pos<S1T.end(); pos++)
110 { delete [] *pos; }
111 S1T.clear();
112 for (pos=B1T.begin(); pos<B1T.end(); pos++)
113 { delete [] *pos; }
114 B1T.clear();
115 for (pos=S2T.begin(); pos<S2T.end(); pos++)
116 { delete [] *pos; }
117 S2T.clear();
118 for (pos=B2T.begin(); pos<B2T.end(); pos++)
119 { delete [] *pos; }
120 B2T.clear();
121 for (pos=S3T.begin(); pos<S3T.end(); pos++)
122 { delete [] *pos; }
123 S3T.clear();
124 for (pos=B3T.begin(); pos<B3T.end(); pos++)
125 { delete [] *pos; }
126 B3T.clear();
127 for (pos=S4T.begin(); pos<S4T.end(); pos++)
128 { delete [] *pos; }
129 S4T.clear();
130 for (pos=B4T.begin(); pos<B4T.end(); pos++)
131 { delete [] *pos; }
132 B4T.clear();
133
134}

Member Function Documentation

◆ Default_Name()

static const char * G4ChipsProtonElasticXS::Default_Name ( )
inlinestatic

Definition at line 54 of file G4ChipsProtonElasticXS.hh.

54{return "ChipsProtonElasticXS";}

Referenced by G4HadronElasticPhysics::ConstructProcess(), G4ChipsComponentXS::G4ChipsComponentXS(), G4ChipsElasticModel::G4ChipsElasticModel(), and G4QuasiElRatios::G4QuasiElRatios().

◆ GetChipsCrossSection()

G4double G4ChipsProtonElasticXS::GetChipsCrossSection ( G4double  momentum,
G4int  Z,
G4int  N,
G4int  pdg 
)
virtual

!The slave functions must provide cross-sections in millibarns (mb) !! (not in IU)

Definition at line 160 of file G4ChipsProtonElasticXS.cc.

161{
162 static std::vector <G4int> colN; // Vector of N for calculated nuclei (isotops)
163 static std::vector <G4int> colZ; // Vector of Z for calculated nuclei (isotops)
164 static std::vector <G4double> colP; // Vector of last momenta for the reaction
165 static std::vector <G4double> colTH; // Vector of energy thresholds for the reaction
166 static std::vector <G4double> colCS; // Vector of last cross sections for the reaction
167 // ***---*** End of the mandatory Static Definitions of the Associative Memory ***---***
168
169 G4double pEn=pMom;
170 onlyCS=false;
171
172 G4bool in=false; // By default the isotope must be found in the AMDB
173 lastP = 0.; // New momentum history (nothing to compare with)
174 lastN = tgN; // The last N of the calculated nucleus
175 lastZ = tgZ; // The last Z of the calculated nucleus
176 lastI = colN.size(); // Size of the Associative Memory DB in the heap
177 if(lastI) for(G4int i=0; i<lastI; i++) // Loop over proj/tgZ/tgN lines of DB
178 { // The nucleus with projPDG is found in AMDB
179 if(colN[i]==tgN && colZ[i]==tgZ) // Isotope is foind in AMDB
180 {
181 lastI=i;
182 lastTH =colTH[i]; // Last THreshold (A-dependent)
183 if(pEn<=lastTH)
184 {
185 return 0.; // Energy is below the Threshold value
186 }
187 lastP =colP [i]; // Last Momentum (A-dependent)
188 lastCS =colCS[i]; // Last CrossSect (A-dependent)
189 if(lastP == pMom) // Do not recalculate
190 {
191 CalculateCrossSection(onlyCS,-1,i,2212,lastZ,lastN,pMom); // Update param's only
192 return lastCS*millibarn; // Use theLastCS
193 }
194 in = true; // This is the case when the isotop is found in DB
195 // Momentum pMom is in IU ! @@ Units
196 lastCS=CalculateCrossSection(onlyCS,-1,i,2212,lastZ,lastN,pMom); // read & update
197 if(lastCS<=0. && pEn>lastTH) // Correct the threshold
198 {
199 lastTH=pEn;
200 }
201 break; // Go out of the LOOP with found lastI
202 }
203 } // End of attampt to find the nucleus in DB
204 if(!in) // This nucleus has not been calculated previously
205 {
206 //!!The slave functions must provide cross-sections in millibarns (mb) !! (not in IU)
207 lastCS=CalculateCrossSection(onlyCS,0,lastI,2212,lastZ,lastN,pMom);//calculate&create
208 if(lastCS<=0.)
209 {
210 lastTH = 0; //ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
211 if(pEn>lastTH)
212 {
213 lastTH=pEn;
214 }
215 }
216 colN.push_back(tgN);
217 colZ.push_back(tgZ);
218 colP.push_back(pMom);
219 colTH.push_back(lastTH);
220 colCS.push_back(lastCS);
221 return lastCS*millibarn;
222 } // End of creation of the new set of parameters
223 else
224 {
225 colP[lastI]=pMom;
226 colCS[lastI]=lastCS;
227 }
228 return lastCS*millibarn;
229}
G4double
double G4double
Definition: G4Types.hh:64
G4int
int G4int
Definition: G4Types.hh:66
G4bool
bool G4bool
Definition: G4Types.hh:67

Referenced by G4QuasiElRatios::ChExer(), G4ChipsComponentXS::GetElasticElementCrossSection(), GetIsoCrossSection(), G4ChipsComponentXS::GetTotalElementCrossSection(), G4ChipsElasticModel::SampleInvariantT(), and G4QuasiElRatios::Scatter().

◆ GetExchangeT()

G4double G4ChipsProtonElasticXS::GetExchangeT ( G4int  tZ,
G4int  tN,
G4int  pPDG 
)

Definition at line 614 of file G4ChipsProtonElasticXS.cc.

615{
616 static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
617 static const G4double third=1./3.;
618 static const G4double fifth=1./5.;
619 static const G4double sevth=1./7.;
620 if(PDG!=2212) G4cout<<"**Warning*G4ChipsProtonElasticXS::GetExT:PDG="<<PDG<<G4endl;
621 if(onlyCS) G4cout<<"**Warning*G4ChipsProtonElasticXS::GetExchanT:onlyCS=1"<<G4endl;
622 if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
623 G4double q2=0.;
624 if(tgZ==1 && tgN==0) // ===> p+p=p+p
625 {
626 G4double E1=lastTM*theB1;
627 G4double R1=(1.-std::exp(-E1));
628 G4double E2=lastTM*theB2;
629 G4double R2=(1.-std::exp(-E2*E2*E2));
630 G4double E3=lastTM*theB3;
631 G4double R3=(1.-std::exp(-E3));
632 G4double I1=R1*theS1/theB1;
633 G4double I2=R2*theS2;
634 G4double I3=R3*theS3;
635 G4double I12=I1+I2;
636 G4double rand=(I12+I3)*G4UniformRand();
637 if (rand<I1 )
638 {
639 G4double ran=R1*G4UniformRand();
640 if(ran>1.) ran=1.;
641 q2=-std::log(1.-ran)/theB1;
642 }
643 else if(rand<I12)
644 {
645 G4double ran=R2*G4UniformRand();
646 if(ran>1.) ran=1.;
647 q2=-std::log(1.-ran);
648 if(q2<0.) q2=0.;
649 q2=std::pow(q2,third)/theB2;
650 }
651 else
652 {
653 G4double ran=R3*G4UniformRand();
654 if(ran>1.) ran=1.;
655 q2=-std::log(1.-ran)/theB3;
656 }
657 }
658 else
659 {
660 G4double a=tgZ+tgN;
661 G4double E1=lastTM*(theB1+lastTM*theSS);
662 G4double R1=(1.-std::exp(-E1));
663 G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
664 G4double tm2=lastTM*lastTM;
665 G4double E2=lastTM*tm2*theB2; // power 3 for lowA, 5 for HighA (1st)
666 if(a>6.5)E2*=tm2; // for heavy nuclei
667 G4double R2=(1.-std::exp(-E2));
668 G4double E3=lastTM*theB3;
669 if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
670 G4double R3=(1.-std::exp(-E3));
671 G4double E4=lastTM*theB4;
672 G4double R4=(1.-std::exp(-E4));
673 G4double I1=R1*theS1;
674 G4double I2=R2*theS2;
675 G4double I3=R3*theS3;
676 G4double I4=R4*theS4;
677 G4double I12=I1+I2;
678 G4double I13=I12+I3;
679 G4double rand=(I13+I4)*G4UniformRand();
680 if(rand<I1)
681 {
682 G4double ran=R1*G4UniformRand();
683 if(ran>1.) ran=1.;
684 q2=-std::log(1.-ran)/theB1;
685 if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
686 }
687 else if(rand<I12)
688 {
689 G4double ran=R2*G4UniformRand();
690 if(ran>1.) ran=1.;
691 q2=-std::log(1.-ran)/theB2;
692 if(q2<0.) q2=0.;
693 if(a<6.5) q2=std::pow(q2,third);
694 else q2=std::pow(q2,fifth);
695 }
696 else if(rand<I13)
697 {
698 G4double ran=R3*G4UniformRand();
699 if(ran>1.) ran=1.;
700 q2=-std::log(1.-ran)/theB3;
701 if(q2<0.) q2=0.;
702 if(a>6.5) q2=std::pow(q2,sevth);
703 }
704 else
705 {
706 G4double ran=R4*G4UniformRand();
707 if(ran>1.) ran=1.;
708 q2=-std::log(1.-ran)/theB4;
709 if(a<6.5) q2=lastTM-q2; // u reduced for lightA (starts from 0)
710 }
711 }
712 if(q2<0.) q2=0.;
713 if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElasticCrossSect::GetExchangeT: -t="<<q2<<G4endl;
714 if(q2>lastTM)
715 {
716 q2=lastTM;
717 }
718 return q2*GeVSQ;
719}
G4endl
#define G4endl
Definition: G4ios.hh:52
G4cout
G4DLLIMPORT std::ostream G4cout
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:53

Referenced by G4QuasiElRatios::ChExer(), G4ChipsElasticModel::SampleInvariantT(), and G4QuasiElRatios::Scatter().

◆ GetHMaxT()

G4double G4ChipsProtonElasticXS::GetHMaxT ( )

Definition at line 744 of file G4ChipsProtonElasticXS.cc.

745{
746 static const G4double HGeVSQ=gigaelectronvolt*gigaelectronvolt/2.;
747 return lastTM*HGeVSQ;
748}

Referenced by G4QuasiElRatios::ChExer(), and G4QuasiElRatios::Scatter().

◆ GetIsoCrossSection()

G4double G4ChipsProtonElasticXS::GetIsoCrossSection ( const G4DynamicParticle *  Pt,
G4int  tgZ,
G4int  A,
const G4Isotope *  iso = 0,
const G4Element *  elm = 0,
const G4Material *  mat = 0 
)
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 146 of file G4ChipsProtonElasticXS.cc.

150{
151 G4double pMom=Pt->GetTotalMomentum();
152 G4int tgN = A - tgZ;
153
154 return GetChipsCrossSection(pMom, tgZ, tgN, 2212);
155}
G4ChipsProtonElasticXS::GetChipsCrossSection
virtual G4double GetChipsCrossSection(G4double momentum, G4int Z, G4int N, G4int pdg)
Definition: G4ChipsProtonElasticXS.cc:160
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const

◆ IsIsoApplicable()

G4bool G4ChipsProtonElasticXS::IsIsoApplicable ( const G4DynamicParticle *  Pt,
G4int  Z,
G4int  A,
const G4Element *  elm,
const G4Material *  mat 
)
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 136 of file G4ChipsProtonElasticXS.cc.

139{
140 G4ParticleDefinition* particle = Pt->GetDefinition();
141 if (particle == G4Proton::Proton() ) return true;
142 return false;
143}
G4DynamicParticle::GetDefinition
G4ParticleDefinition * GetDefinition() const
G4Proton::Proton
static G4Proton * Proton()
Definition: G4Proton.cc:93
The documentation for this class was generated from the following files: