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G4ChipsPionMinusElasticXS Class Reference

#include <G4ChipsPionMinusElasticXS.hh>

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Public Member Functions

 G4ChipsPionMinusElasticXS ()
 
 ~G4ChipsPionMinusElasticXS ()
 
virtual void CrossSectionDescription (std::ostream &) const
 
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)
 
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 G4Isotope * SelectIsotope (const G4Element *, G4double kinEnergy)
 
virtual void BuildPhysicsTable (const G4ParticleDefinition &)
 
virtual void DumpPhysicsTable (const G4ParticleDefinition &)
 
virtual G4int GetVerboseLevel () const
 
virtual 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 47 of file G4ChipsPionMinusElasticXS.hh.

Constructor & Destructor Documentation

G4ChipsPionMinusElasticXS::G4ChipsPionMinusElasticXS ( )

Definition at line 59 of file G4ChipsPionMinusElasticXS.cc.

59  :G4VCrossSectionDataSet(Default_Name()), nPoints(128), nLast(nPoints-1)
60 {
61  lPMin=-8.; //Min tabulated logarithmMomentum(D)
62  lPMax= 8.; //Max tabulated logarithmMomentum(D)
63  dlnP=(lPMax-lPMin)/nLast;//LogStep inTheTable(D)
64  onlyCS=true;//Flag toCalcul OnlyCS(not Si/Bi)(L)
65  lastSIG=0.; //Last calculated cross section (L)
66  lastLP=-10.;//Last log(mom_of IncidentHadron)(L)
67  lastTM=0.; //Last t_maximum (L)
68  theSS=0.; //TheLastSqSlope of 1st difr.Max(L)
69  theS1=0.; //TheLastMantissa of 1st difr.Max(L)
70  theB1=0.; //TheLastSlope of 1st difruct.Max(L)
71  theS2=0.; //TheLastMantissa of 2nd difr.Max(L)
72  theB2=0.; //TheLastSlope of 2nd difruct.Max(L)
73  theS3=0.; //TheLastMantissa of 3d difr. Max(L)
74  theB3=0.; //TheLastSlope of 3d difruct. Max(L)
75  theS4=0.; //TheLastMantissa of 4th difr.Max(L)
76  theB4=0.; //TheLastSlope of 4th difruct.Max(L)
77  lastTZ=0; // Last atomic number of the target
78  lastTN=0; // Last # of neutrons in the target
79  lastPIN=0.; // Last initialized max momentum
80  lastCST=0; // Elastic cross-section table
81  lastPAR=0; // Parameters ForFunctionCalculation
82  lastSST=0; // E-dep of SqardSlope of 1st difMax
83  lastS1T=0; // E-dep of mantissa of 1st dif.Max
84  lastB1T=0; // E-dep of the slope of 1st difMax
85  lastS2T=0; // E-dep of mantissa of 2nd difrMax
86  lastB2T=0; // E-dep of the slope of 2nd difMax
87  lastS3T=0; // E-dep of mantissa of 3d difr.Max
88  lastB3T=0; // E-dep of the slope of 3d difrMax
89  lastS4T=0; // E-dep of mantissa of 4th difrMax
90  lastB4T=0; // E-dep of the slope of 4th difMax
91  lastN=0; // The last N of calculated nucleus
92  lastZ=0; // The last Z of calculated nucleus
93  lastP=0.; // LastUsed in CrossSection Momentum
94  lastTH=0.; // Last threshold momentum
95  lastCS=0.; // Last value of the Cross Section
96  lastI=0; // The last position in the DAMDB
97 }
G4VCrossSectionDataSet::G4VCrossSectionDataSet
G4VCrossSectionDataSet(const G4String &nam="")
Definition: G4VCrossSectionDataSet.cc:54
G4ChipsPionMinusElasticXS::~G4ChipsPionMinusElasticXS ( )

Definition at line 99 of file G4ChipsPionMinusElasticXS.cc.

100 {
101  std::vector<G4double*>::iterator pos;
102  for (pos=CST.begin(); pos<CST.end(); pos++)
103  { delete [] *pos; }
104  CST.clear();
105  for (pos=PAR.begin(); pos<PAR.end(); pos++)
106  { delete [] *pos; }
107  PAR.clear();
108  for (pos=SST.begin(); pos<SST.end(); pos++)
109  { delete [] *pos; }
110  SST.clear();
111  for (pos=S1T.begin(); pos<S1T.end(); pos++)
112  { delete [] *pos; }
113  S1T.clear();
114  for (pos=B1T.begin(); pos<B1T.end(); pos++)
115  { delete [] *pos; }
116  B1T.clear();
117  for (pos=S2T.begin(); pos<S2T.end(); pos++)
118  { delete [] *pos; }
119  S2T.clear();
120  for (pos=B2T.begin(); pos<B2T.end(); pos++)
121  { delete [] *pos; }
122  B2T.clear();
123  for (pos=S3T.begin(); pos<S3T.end(); pos++)
124  { delete [] *pos; }
125  S3T.clear();
126  for (pos=B3T.begin(); pos<B3T.end(); pos++)
127  { delete [] *pos; }
128  B3T.clear();
129  for (pos=S4T.begin(); pos<S4T.end(); pos++)
130  { delete [] *pos; }
131  S4T.clear();
132  for (pos=B4T.begin(); pos<B4T.end(); pos++)
133  { delete [] *pos; }
134  B4T.clear();
135 }
pos
static const G4double pos
Definition: G4ElectroNuclearCrossSection.cc:66

Member Function Documentation

void G4ChipsPionMinusElasticXS::CrossSectionDescription ( std::ostream &  outFile) const
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 138 of file G4ChipsPionMinusElasticXS.cc.

139 {
140  outFile << "G4ChipsPionMinusElasticXS provides the elastic cross\n"
141  << "section for pion- nucleus scattering as a function of incident\n"
142  << "momentum. The cross section is calculated using M. Kossov's\n"
143  << "CHIPS parameterization of cross section data.\n";
144 }
static const char* G4ChipsPionMinusElasticXS::Default_Name ( )
inlinestatic

Definition at line 55 of file G4ChipsPionMinusElasticXS.hh.

55 {return "ChipsPionMinusElasticXS";}

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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 167 of file G4ChipsPionMinusElasticXS.cc.

168 {
169 
170  G4double pEn=pMom;
171  G4bool fCS = false;
172  onlyCS=fCS;
173 
174  G4bool in=false; // By default the isotope must be found in the AMDB
175  lastP = 0.; // New momentum history (nothing to compare with)
176  lastN = tgN; // The last N of the calculated nucleus
177  lastZ = tgZ; // The last Z of the calculated nucleus
178  lastI = colN.size(); // Size of the Associative Memory DB in the heap
179  if(lastI) for(G4int i=0; i<lastI; i++) // Loop over proj/tgZ/tgN lines of DB
180  { // The nucleus with projPDG is found in AMDB
181  if(colN[i]==tgN && colZ[i]==tgZ) // Isotope is foind in AMDB
182  {
183  lastI=i;
184  lastTH =colTH[i]; // Last THreshold (A-dependent)
185  if(pEn<=lastTH)
186  {
187  return 0.; // Energy is below the Threshold value
188  }
189  lastP =colP [i]; // Last Momentum (A-dependent)
190  lastCS =colCS[i]; // Last CrossSect (A-dependent)
191  // if(std::fabs(lastP/pMom-1.)<tolerance) //VI (do not use tolerance)
192  if(lastP == pMom) // Do not recalculate
193  {
194  CalculateCrossSection(fCS,-1,i,-211,lastZ,lastN,pMom); // Update param's only
195  return lastCS*millibarn; // Use theLastCS
196  }
197  in = true; // This is the case when the isotop is found in DB
198  // Momentum pMom is in IU ! @@ Units
199  lastCS=CalculateCrossSection(fCS,-1,i,-211,lastZ,lastN,pMom); // read & update
200  if(lastCS<=0. && pEn>lastTH) // Correct the threshold
201  {
202  lastTH=pEn;
203  }
204  break; // Go out of the LOOP with found lastI
205  }
206  } // End of attampt to find the nucleus in DB
207  if(!in) // This nucleus has not been calculated previously
208  {
210  lastCS=CalculateCrossSection(fCS,0,lastI,-211,lastZ,lastN,pMom);//calculate&create
211  if(lastCS<=0.)
212  {
213  lastTH = 0; //ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
214  if(pEn>lastTH)
215  {
216  lastTH=pEn;
217  }
218  }
219  colN.push_back(tgN);
220  colZ.push_back(tgZ);
221  colP.push_back(pMom);
222  colTH.push_back(lastTH);
223  colCS.push_back(lastCS);
224  return lastCS*millibarn;
225  } // End of creation of the new set of parameters
226  else
227  {
228  colP[lastI]=pMom;
229  colCS[lastI]=lastCS;
230  }
231  return lastCS*millibarn;
232 }
G4int
int G4int
Definition: G4Types.hh:78
G4bool
bool G4bool
Definition: G4Types.hh:79
G4double
double G4double
Definition: G4Types.hh:76
millibarn
static constexpr double millibarn
Definition: G4SIunits.hh:106

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

Definition at line 604 of file G4ChipsPionMinusElasticXS.cc.

605 {
606  static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
607  static const G4double third=1./3.;
608  static const G4double fifth=1./5.;
609  static const G4double sevth=1./7.;
610  if(PDG!=-211)G4cout<<"Warning*G4ChipsPionMinusElasticXS::GetExT:PDG="<<PDG<<G4endl;
611  if(onlyCS)G4cout<<"Warning*G4ChipsPionMinusElasticXS::GetExchanT:onlyCS=1"<<G4endl;
612  if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
613  G4double q2=0.;
614  if(tgZ==1 && tgN==0) // ===> p+p=p+p
615  {
616  G4double E1=lastTM*theB1;
617  G4double R1=(1.-G4Exp(-E1));
618  G4double E2=lastTM*theB2;
619  G4double R2=(1.-G4Exp(-E2*E2*E2));
620  G4double E3=lastTM*theB3;
621  G4double R3=(1.-G4Exp(-E3));
622  G4double I1=R1*theS1/theB1;
623  G4double I2=R2*theS2;
624  G4double I3=R3*theS3;
625  G4double I12=I1+I2;
626  G4double rand=(I12+I3)*G4UniformRand();
627  if (rand<I1 )
628  {
629  G4double ran=R1*G4UniformRand();
630  if(ran>1.) ran=1.;
631  q2=-G4Log(1.-ran)/theB1;
632  }
633  else if(rand<I12)
634  {
635  G4double ran=R2*G4UniformRand();
636  if(ran>1.) ran=1.;
637  q2=-G4Log(1.-ran);
638  if(q2<0.) q2=0.;
639  q2=G4Pow::GetInstance()->powA(q2,third)/theB2;
640  }
641  else
642  {
643  G4double ran=R3*G4UniformRand();
644  if(ran>1.) ran=1.;
645  q2=-G4Log(1.-ran)/theB3;
646  }
647  }
648  else
649  {
650  G4double a=tgZ+tgN;
651  G4double E1=lastTM*(theB1+lastTM*theSS);
652  G4double R1=(1.-G4Exp(-E1));
653  G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
654  G4double tm2=lastTM*lastTM;
655  G4double E2=lastTM*tm2*theB2; // power 3 for lowA, 5 for HighA (1st)
656  if(a>6.5)E2*=tm2; // for heavy nuclei
657  G4double R2=(1.-G4Exp(-E2));
658  G4double E3=lastTM*theB3;
659  if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
660  G4double R3=(1.-G4Exp(-E3));
661  G4double E4=lastTM*theB4;
662  G4double R4=(1.-G4Exp(-E4));
663  G4double I1=R1*theS1;
664  G4double I2=R2*theS2;
665  G4double I3=R3*theS3;
666  G4double I4=R4*theS4;
667  G4double I12=I1+I2;
668  G4double I13=I12+I3;
669  G4double rand=(I13+I4)*G4UniformRand();
670  if(rand<I1)
671  {
672  G4double ran=R1*G4UniformRand();
673  if(ran>1.) ran=1.;
674  q2=-G4Log(1.-ran)/theB1;
675  if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
676  }
677  else if(rand<I12)
678  {
679  G4double ran=R2*G4UniformRand();
680  if(ran>1.) ran=1.;
681  q2=-G4Log(1.-ran)/theB2;
682  if(q2<0.) q2=0.;
683  if(a<6.5) q2=G4Pow::GetInstance()->powA(q2,third);
684  else q2=G4Pow::GetInstance()->powA(q2,fifth);
685  }
686  else if(rand<I13)
687  {
688  G4double ran=R3*G4UniformRand();
689  if(ran>1.) ran=1.;
690  q2=-G4Log(1.-ran)/theB3;
691  if(q2<0.) q2=0.;
692  if(a>6.5) q2=G4Pow::GetInstance()->powA(q2,sevth);
693  }
694  else
695  {
696  G4double ran=R4*G4UniformRand();
697  if(ran>1.) ran=1.;
698  q2=-G4Log(1.-ran)/theB4;
699  if(a<6.5) q2=lastTM-q2; // u reduced for lightA (starts from 0)
700  }
701  }
702  if(q2<0.) q2=0.;
703  if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElasticCrossSect::GetExchangeT: -t="<<q2<<G4endl;
704  if(q2>lastTM)
705  {
706  q2=lastTM;
707  }
708  return q2*GeVSQ;
709 }
G4Pow::GetInstance
static G4Pow * GetInstance()
Definition: G4Pow.cc:55
G4Pow::powA
G4double powA(G4double A, G4double y) const
Definition: G4Pow.hh:259
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:97
G4cout
G4GLOB_DLL std::ostream G4cout
G4Log
G4double G4Log(G4double x)
Definition: G4Log.hh:230
G4Exp
G4double G4Exp(G4double initial_x)
Exponential Function double precision.
Definition: G4Exp.hh:183
gigaelectronvolt
static constexpr double gigaelectronvolt
Definition: G4SIunits.hh:209
G4endl
#define G4endl
Definition: G4ios.hh:61
G4double
double G4double
Definition: G4Types.hh:76

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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 156 of file G4ChipsPionMinusElasticXS.cc.

160 {
161  G4double pMom=Pt->GetTotalMomentum();
162  G4int tgN = A - tgZ;
163 
164  return GetChipsCrossSection(pMom, tgZ, tgN, -212);
165 }
G4int
int G4int
Definition: G4Types.hh:78
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const
A
double A(double temperature)
Definition: G4DNAElectronHoleRecombination.cc:60
G4ChipsPionMinusElasticXS::GetChipsCrossSection
virtual G4double GetChipsCrossSection(G4double momentum, G4int Z, G4int N, G4int pdg)
Definition: G4ChipsPionMinusElasticXS.cc:167
G4double
double G4double
Definition: G4Types.hh:76

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

Reimplemented from G4VCrossSectionDataSet.

Definition at line 147 of file G4ChipsPionMinusElasticXS.cc.

150 {
151  return true;
152 }
The documentation for this class was generated from the following files: