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
G4ChipsPionMinusElasticXS Class Reference

#include <G4ChipsPionMinusElasticXS.hh>

+ Inheritance diagram for G4ChipsPionMinusElasticXS:

Public Member Functions

 G4ChipsPionMinusElasticXS ()
 
 ~G4ChipsPionMinusElasticXS ()
 
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)
 
- 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 48 of file G4ChipsPionMinusElasticXS.hh.

Constructor & Destructor Documentation

◆ G4ChipsPionMinusElasticXS()

G4ChipsPionMinusElasticXS::G4ChipsPionMinusElasticXS ( )

Definition at line 54 of file G4ChipsPionMinusElasticXS.cc.

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

◆ ~G4ChipsPionMinusElasticXS()

G4ChipsPionMinusElasticXS::~G4ChipsPionMinusElasticXS ( )

Definition at line 94 of file G4ChipsPionMinusElasticXS.cc.

95{
96 std::vector<G4double*>::iterator pos;
97 for (pos=CST.begin(); pos<CST.end(); pos++)
98 { delete [] *pos; }
99 CST.clear();
100 for (pos=PAR.begin(); pos<PAR.end(); pos++)
101 { delete [] *pos; }
102 PAR.clear();
103 for (pos=SST.begin(); pos<SST.end(); pos++)
104 { delete [] *pos; }
105 SST.clear();
106 for (pos=S1T.begin(); pos<S1T.end(); pos++)
107 { delete [] *pos; }
108 S1T.clear();
109 for (pos=B1T.begin(); pos<B1T.end(); pos++)
110 { delete [] *pos; }
111 B1T.clear();
112 for (pos=S2T.begin(); pos<S2T.end(); pos++)
113 { delete [] *pos; }
114 S2T.clear();
115 for (pos=B2T.begin(); pos<B2T.end(); pos++)
116 { delete [] *pos; }
117 B2T.clear();
118 for (pos=S3T.begin(); pos<S3T.end(); pos++)
119 { delete [] *pos; }
120 S3T.clear();
121 for (pos=B3T.begin(); pos<B3T.end(); pos++)
122 { delete [] *pos; }
123 B3T.clear();
124 for (pos=S4T.begin(); pos<S4T.end(); pos++)
125 { delete [] *pos; }
126 S4T.clear();
127 for (pos=B4T.begin(); pos<B4T.end(); pos++)
128 { delete [] *pos; }
129 B4T.clear();
130}

Member Function Documentation

◆ Default_Name()

static const char * G4ChipsPionMinusElasticXS::Default_Name ( )
inlinestatic

Definition at line 56 of file G4ChipsPionMinusElasticXS.hh.

56{return "ChipsPionMinusElasticXS";}

Referenced by G4ChipsComponentXS::G4ChipsComponentXS(), and G4ChipsElasticModel::G4ChipsElasticModel().

◆ GetChipsCrossSection()

G4double G4ChipsPionMinusElasticXS::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 155 of file G4ChipsPionMinusElasticXS.cc.

156{
157 static std::vector <G4int> colN; // Vector of N for calculated nuclei (isotops)
158 static std::vector <G4int> colZ; // Vector of Z for calculated nuclei (isotops)
159 static std::vector <G4double> colP; // Vector of last momenta for the reaction
160 static std::vector <G4double> colTH; // Vector of energy thresholds for the reaction
161 static std::vector <G4double> colCS; // Vector of last cross sections for the reaction
162 // ***---*** End of the mandatory Static Definitions of the Associative Memory ***---***
163
164 G4double pEn=pMom;
165 G4bool fCS = false;
166 onlyCS=fCS;
167
168 G4bool in=false; // By default the isotope must be found in the AMDB
169 lastP = 0.; // New momentum history (nothing to compare with)
170 lastN = tgN; // The last N of the calculated nucleus
171 lastZ = tgZ; // The last Z of the calculated nucleus
172 lastI = colN.size(); // Size of the Associative Memory DB in the heap
173 if(lastI) for(G4int i=0; i<lastI; i++) // Loop over proj/tgZ/tgN lines of DB
174 { // The nucleus with projPDG is found in AMDB
175 if(colN[i]==tgN && colZ[i]==tgZ) // Isotope is foind in AMDB
176 {
177 lastI=i;
178 lastTH =colTH[i]; // Last THreshold (A-dependent)
179 if(pEn<=lastTH)
180 {
181 return 0.; // Energy is below the Threshold value
182 }
183 lastP =colP [i]; // Last Momentum (A-dependent)
184 lastCS =colCS[i]; // Last CrossSect (A-dependent)
185 // if(std::fabs(lastP/pMom-1.)<tolerance) //VI (do not use tolerance)
186 if(lastP == pMom) // Do not recalculate
187 {
188 CalculateCrossSection(fCS,-1,i,-211,lastZ,lastN,pMom); // Update param's only
189 return lastCS*millibarn; // Use theLastCS
190 }
191 in = true; // This is the case when the isotop is found in DB
192 // Momentum pMom is in IU ! @@ Units
193 lastCS=CalculateCrossSection(fCS,-1,i,-211,lastZ,lastN,pMom); // read & update
194 if(lastCS<=0. && pEn>lastTH) // Correct the threshold
195 {
196 lastTH=pEn;
197 }
198 break; // Go out of the LOOP with found lastI
199 }
200 } // End of attampt to find the nucleus in DB
201 if(!in) // This nucleus has not been calculated previously
202 {
203 //!!The slave functions must provide cross-sections in millibarns (mb) !! (not in IU)
204 lastCS=CalculateCrossSection(fCS,0,lastI,-211,lastZ,lastN,pMom);//calculate&create
205 if(lastCS<=0.)
206 {
207 lastTH = 0; //ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
208 if(pEn>lastTH)
209 {
210 lastTH=pEn;
211 }
212 }
213 colN.push_back(tgN);
214 colZ.push_back(tgZ);
215 colP.push_back(pMom);
216 colTH.push_back(lastTH);
217 colCS.push_back(lastCS);
218 return lastCS*millibarn;
219 } // End of creation of the new set of parameters
220 else
221 {
222 colP[lastI]=pMom;
223 colCS[lastI]=lastCS;
224 }
225 return lastCS*millibarn;
226}
G4double
double G4double
Definition: G4Types.hh:64
G4int
int G4int
Definition: G4Types.hh:66
G4bool
bool G4bool
Definition: G4Types.hh:67

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

◆ GetExchangeT()

G4double G4ChipsPionMinusElasticXS::GetExchangeT ( G4int  tZ,
G4int  tN,
G4int  pPDG 
)

Definition at line 601 of file G4ChipsPionMinusElasticXS.cc.

602{
603 static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
604 static const G4double third=1./3.;
605 static const G4double fifth=1./5.;
606 static const G4double sevth=1./7.;
607 if(PDG!=-211)G4cout<<"Warning*G4ChipsPionMinusElasticXS::GetExT:PDG="<<PDG<<G4endl;
608 if(onlyCS)G4cout<<"Warning*G4ChipsPionMinusElasticXS::GetExchanT:onlyCS=1"<<G4endl;
609 if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
610 G4double q2=0.;
611 if(tgZ==1 && tgN==0) // ===> p+p=p+p
612 {
613 G4double E1=lastTM*theB1;
614 G4double R1=(1.-std::exp(-E1));
615 G4double E2=lastTM*theB2;
616 G4double R2=(1.-std::exp(-E2*E2*E2));
617 G4double E3=lastTM*theB3;
618 G4double R3=(1.-std::exp(-E3));
619 G4double I1=R1*theS1/theB1;
620 G4double I2=R2*theS2;
621 G4double I3=R3*theS3;
622 G4double I12=I1+I2;
623 G4double rand=(I12+I3)*G4UniformRand();
624 if (rand<I1 )
625 {
626 G4double ran=R1*G4UniformRand();
627 if(ran>1.) ran=1.;
628 q2=-std::log(1.-ran)/theB1;
629 }
630 else if(rand<I12)
631 {
632 G4double ran=R2*G4UniformRand();
633 if(ran>1.) ran=1.;
634 q2=-std::log(1.-ran);
635 if(q2<0.) q2=0.;
636 q2=std::pow(q2,third)/theB2;
637 }
638 else
639 {
640 G4double ran=R3*G4UniformRand();
641 if(ran>1.) ran=1.;
642 q2=-std::log(1.-ran)/theB3;
643 }
644 }
645 else
646 {
647 G4double a=tgZ+tgN;
648 G4double E1=lastTM*(theB1+lastTM*theSS);
649 G4double R1=(1.-std::exp(-E1));
650 G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
651 G4double tm2=lastTM*lastTM;
652 G4double E2=lastTM*tm2*theB2; // power 3 for lowA, 5 for HighA (1st)
653 if(a>6.5)E2*=tm2; // for heavy nuclei
654 G4double R2=(1.-std::exp(-E2));
655 G4double E3=lastTM*theB3;
656 if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
657 G4double R3=(1.-std::exp(-E3));
658 G4double E4=lastTM*theB4;
659 G4double R4=(1.-std::exp(-E4));
660 G4double I1=R1*theS1;
661 G4double I2=R2*theS2;
662 G4double I3=R3*theS3;
663 G4double I4=R4*theS4;
664 G4double I12=I1+I2;
665 G4double I13=I12+I3;
666 G4double rand=(I13+I4)*G4UniformRand();
667 if(rand<I1)
668 {
669 G4double ran=R1*G4UniformRand();
670 if(ran>1.) ran=1.;
671 q2=-std::log(1.-ran)/theB1;
672 if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
673 }
674 else if(rand<I12)
675 {
676 G4double ran=R2*G4UniformRand();
677 if(ran>1.) ran=1.;
678 q2=-std::log(1.-ran)/theB2;
679 if(q2<0.) q2=0.;
680 if(a<6.5) q2=std::pow(q2,third);
681 else q2=std::pow(q2,fifth);
682 }
683 else if(rand<I13)
684 {
685 G4double ran=R3*G4UniformRand();
686 if(ran>1.) ran=1.;
687 q2=-std::log(1.-ran)/theB3;
688 if(q2<0.) q2=0.;
689 if(a>6.5) q2=std::pow(q2,sevth);
690 }
691 else
692 {
693 G4double ran=R4*G4UniformRand();
694 if(ran>1.) ran=1.;
695 q2=-std::log(1.-ran)/theB4;
696 if(a<6.5) q2=lastTM-q2; // u reduced for lightA (starts from 0)
697 }
698 }
699 if(q2<0.) q2=0.;
700 if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElasticCrossSect::GetExchangeT: -t="<<q2<<G4endl;
701 if(q2>lastTM)
702 {
703 q2=lastTM;
704 }
705 return q2*GeVSQ;
706}
G4endl
#define G4endl
Definition: G4ios.hh:52
G4cout
G4DLLIMPORT std::ostream G4cout
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:53

Referenced by G4ChipsElasticModel::SampleInvariantT().

◆ GetIsoCrossSection()

G4double G4ChipsPionMinusElasticXS::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 144 of file G4ChipsPionMinusElasticXS.cc.

148{
149 G4double pMom=Pt->GetTotalMomentum();
150 G4int tgN = A - tgZ;
151
152 return GetChipsCrossSection(pMom, tgZ, tgN, -212);
153}
G4ChipsPionMinusElasticXS::GetChipsCrossSection
virtual G4double GetChipsCrossSection(G4double momentum, G4int Z, G4int N, G4int pdg)
Definition: G4ChipsPionMinusElasticXS.cc:155
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const

◆ IsIsoApplicable()

G4bool G4ChipsPionMinusElasticXS::IsIsoApplicable ( const G4DynamicParticle *  Pt,
G4int  Z,
G4int  A,
const G4Element *  elm,
const G4Material *  mat 
)
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 133 of file G4ChipsPionMinusElasticXS.cc.

136{
137 G4ParticleDefinition* particle = Pt->GetDefinition();
138 if (particle == G4PionMinus::PionMinus() ) return true;
139 return false;
140}
G4DynamicParticle::GetDefinition
G4ParticleDefinition * GetDefinition() const
G4PionMinus::PionMinus
static G4PionMinus * PionMinus()
Definition: G4PionMinus.cc:98
The documentation for this class was generated from the following files: