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G4ChipsPionPlusElasticXS Class Reference

#include <G4ChipsPionPlusElasticXS.hh>

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Public Member Functions

 G4ChipsPionPlusElasticXS ()
 
 ~G4ChipsPionPlusElasticXS ()
 
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 46 of file G4ChipsPionPlusElasticXS.hh.

Constructor & Destructor Documentation

G4ChipsPionPlusElasticXS::G4ChipsPionPlusElasticXS ( )

Definition at line 58 of file G4ChipsPionPlusElasticXS.cc.

58  :G4VCrossSectionDataSet(Default_Name()), nPoints(128), nLast(nPoints-1)
59 {
60  lPMin=-8.; // Min tabulated logarithmMomentum(D)
61  lPMax= 8.; // Max tabulated logarithmMomentum(D)
62  dlnP=(lPMax-lPMin)/nLast;// LogStep inTheTable(D)
63  onlyCS=true;// Flag toCalcul OnlyCS(not Si/Bi)(L)
64  lastSIG=0.; // Last calculated cross section (L)
65  lastLP=-10.;// Last log(mom_of IncidentHadron)(L)
66  lastTM=0.; // Last t_maximum (L)
67  theSS=0.; // TheLastSqSlope of 1st difr.Max(L)
68  theS1=0.; // TheLastMantissa of 1st difr.Max(L)
69  theB1=0.; // TheLastSlope of 1st difruct.Max(L)
70  theS2=0.; // TheLastMantissa of 2nd difr.Max(L)
71  theB2=0.; // TheLastSlope of 2nd difruct.Max(L)
72  theS3=0.; // TheLastMantissa of 3d difr. Max(L)
73  theB3=0.; // TheLastSlope of 3d difruct. Max(L)
74  theS4=0.; // TheLastMantissa of 4th difr.Max(L)
75  theB4=0.; // TheLastSlope of 4th difruct.Max(L)
76  lastTZ=0; // Last atomic number of the target
77  lastTN=0; // Last # of neutrons in the target
78  lastPIN=0.; // Last initialized max momentum
79  lastCST=0; // Elastic cross-section table
80  lastPAR=0; // ParametersForFunctionalCalculation
81  lastSST=0; // E-dep of SqaredSlope of 1st difMax
82  lastS1T=0; // E-dep of mantissa of 1st dif.Max
83  lastB1T=0; // E-dep of the slope of 1st difMax
84  lastS2T=0; // E-dep of mantissa of 2nd difrMax
85  lastB2T=0; // E-dep of the slope of 2nd difMax
86  lastS3T=0; // E-dep of mantissa of 3d difr.Max
87  lastB3T=0; // E-dep of the slope of 3d difrMax
88  lastS4T=0; // E-dep of mantissa of 4th difrMax
89  lastB4T=0; // E-dep of the slope of 4th difMax
90  lastN=0; // The last N of calculated nucleus
91  lastZ=0; // The last Z of calculated nucleus
92  lastP=0.; // LastUsed in cross section Momentum
93  lastTH=0.; // Last threshold momentum
94  lastCS=0.; // Last value of the Cross Section
95  lastI=0; // The last position in the DAMDB
96 }
G4VCrossSectionDataSet::G4VCrossSectionDataSet
G4VCrossSectionDataSet(const G4String &nam="")
Definition: G4VCrossSectionDataSet.cc:54
G4ChipsPionPlusElasticXS::Default_Name
static const char * Default_Name()
Definition: G4ChipsPionPlusElasticXS.hh:54
G4ChipsPionPlusElasticXS::~G4ChipsPionPlusElasticXS ( )

Definition at line 98 of file G4ChipsPionPlusElasticXS.cc.

99 {
100  std::vector<G4double*>::iterator pos;
101  for (pos=CST.begin(); pos<CST.end(); pos++)
102  { delete [] *pos; }
103  CST.clear();
104  for (pos=PAR.begin(); pos<PAR.end(); pos++)
105  { delete [] *pos; }
106  PAR.clear();
107  for (pos=SST.begin(); pos<SST.end(); pos++)
108  { delete [] *pos; }
109  SST.clear();
110  for (pos=S1T.begin(); pos<S1T.end(); pos++)
111  { delete [] *pos; }
112  S1T.clear();
113  for (pos=B1T.begin(); pos<B1T.end(); pos++)
114  { delete [] *pos; }
115  B1T.clear();
116  for (pos=S2T.begin(); pos<S2T.end(); pos++)
117  { delete [] *pos; }
118  S2T.clear();
119  for (pos=B2T.begin(); pos<B2T.end(); pos++)
120  { delete [] *pos; }
121  B2T.clear();
122  for (pos=S3T.begin(); pos<S3T.end(); pos++)
123  { delete [] *pos; }
124  S3T.clear();
125  for (pos=B3T.begin(); pos<B3T.end(); pos++)
126  { delete [] *pos; }
127  B3T.clear();
128  for (pos=S4T.begin(); pos<S4T.end(); pos++)
129  { delete [] *pos; }
130  S4T.clear();
131  for (pos=B4T.begin(); pos<B4T.end(); pos++)
132  { delete [] *pos; }
133  B4T.clear();
134 }
pos
static const G4double pos
Definition: G4ElectroNuclearCrossSection.cc:66

Member Function Documentation

void G4ChipsPionPlusElasticXS::CrossSectionDescription ( std::ostream &  outFile) const
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 137 of file G4ChipsPionPlusElasticXS.cc.

138 {
139  outFile << "G4ChipsPionPlusElasticXS provides the elastic cross\n"
140  << "section for pion+ nucleus scattering as a function of incident\n"
141  << "momentum. The cross section is calculated using M. Kossov's\n"
142  << "CHIPS parameterization of cross section data.\n";
143 }
static const char* G4ChipsPionPlusElasticXS::Default_Name ( )
inlinestatic

Definition at line 54 of file G4ChipsPionPlusElasticXS.hh.

54 {return "ChipsPionPlusElasticXS";}

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G4double G4ChipsPionPlusElasticXS::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 166 of file G4ChipsPionPlusElasticXS.cc.

167 {
168  G4double pEn=pMom;
169  G4bool fCS = false;
170  onlyCS=fCS;
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(std::fabs(lastP/pMom-1.)<tolerance) //VI (do not use tolerance)
190  if(lastP == pMom) // Do not recalculate
191  {
192  CalculateCrossSection(fCS,-1,i,211,lastZ,lastN,pMom); // Update param's only
193  return lastCS*millibarn; // Use theLastCS
194  }
195  in = true; // This is the case when the isotop is found in DB
196  // Momentum pMom is in IU ! @@ Units
197  lastCS=CalculateCrossSection(fCS,-1,i,211,lastZ,lastN,pMom); // read & update
198  if(lastCS<=0. && pEn>lastTH) // Correct the threshold
199  {
200  lastTH=pEn;
201  }
202  break; // Go out of the LOOP with found lastI
203  }
204  } // End of attampt to find the nucleus in DB
205  if(!in) // This nucleus has not been calculated previously
206  {
208  lastCS=CalculateCrossSection(fCS,0,lastI,211,lastZ,lastN,pMom);//calculate&create
209  if(lastCS<=0.)
210  {
211  lastTH = 0; //ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
212  if(pEn>lastTH)
213  {
214  lastTH=pEn;
215  }
216  }
217  colN.push_back(tgN);
218  colZ.push_back(tgZ);
219  colP.push_back(pMom);
220  colTH.push_back(lastTH);
221  colCS.push_back(lastCS);
222  return lastCS*millibarn;
223  } // End of creation of the new set of parameters
224  else
225  {
226  colP[lastI]=pMom;
227  colCS[lastI]=lastCS;
228  }
229  return lastCS*millibarn;
230 }
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 G4ChipsPionPlusElasticXS::GetExchangeT ( G4int  tZ,
G4int  tN,
G4int  pPDG 
)

Definition at line 602 of file G4ChipsPionPlusElasticXS.cc.

603 {
604  static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
605  static const G4double third=1./3.;
606  static const G4double fifth=1./5.;
607  static const G4double sevth=1./7.;
608  if(PDG!= 211)G4cout<<"*Warning*G4ChipsPionPlusElasticXS::GetExT:PDG="<<PDG<<G4endl;
609  if(onlyCS)G4cout<<"*Warning*G4ChipsPionPlusElasticXS::GetExchanT:onlyCS=1"<<G4endl;
610  if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
611  G4double q2=0.;
612  if(tgZ==1 && tgN==0) // ===> p+p=p+p
613  {
614  G4double E1=lastTM*theB1;
615  G4double R1=(1.-G4Exp(-E1));
616  G4double E2=lastTM*theB2;
617  G4double R2=(1.-G4Exp(-E2*E2*E2));
618  G4double E3=lastTM*theB3;
619  G4double R3=(1.-G4Exp(-E3));
620  G4double I1=R1*theS1/theB1;
621  G4double I2=R2*theS2;
622  G4double I3=R3*theS3;
623  G4double I12=I1+I2;
624  G4double rand=(I12+I3)*G4UniformRand();
625  if (rand<I1 )
626  {
627  G4double ran=R1*G4UniformRand();
628  if(ran>1.) ran=1.;
629  q2=-G4Log(1.-ran)/theB1;
630  }
631  else if(rand<I12)
632  {
633  G4double ran=R2*G4UniformRand();
634  if(ran>1.) ran=1.;
635  q2=-G4Log(1.-ran);
636  if(q2<0.) q2=0.;
637  q2=G4Pow::GetInstance()->powA(q2,third)/theB2;
638  }
639  else
640  {
641  G4double ran=R3*G4UniformRand();
642  if(ran>1.) ran=1.;
643  q2=-G4Log(1.-ran)/theB3;
644  }
645  }
646  else
647  {
648  G4double a=tgZ+tgN;
649  G4double E1=lastTM*(theB1+lastTM*theSS);
650  G4double R1=(1.-G4Exp(-E1));
651  G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
652  G4double tm2=lastTM*lastTM;
653  G4double E2=lastTM*tm2*theB2; // power 3 for lowA, 5 for HighA (1st)
654  if(a>6.5)E2*=tm2; // for heavy nuclei
655  G4double R2=(1.-G4Exp(-E2));
656  G4double E3=lastTM*theB3;
657  if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
658  G4double R3=(1.-G4Exp(-E3));
659  G4double E4=lastTM*theB4;
660  G4double R4=(1.-G4Exp(-E4));
661  G4double I1=R1*theS1;
662  G4double I2=R2*theS2;
663  G4double I3=R3*theS3;
664  G4double I4=R4*theS4;
665  G4double I12=I1+I2;
666  G4double I13=I12+I3;
667  G4double rand=(I13+I4)*G4UniformRand();
668  if(rand<I1)
669  {
670  G4double ran=R1*G4UniformRand();
671  if(ran>1.) ran=1.;
672  q2=-G4Log(1.-ran)/theB1;
673  if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
674  }
675  else if(rand<I12)
676  {
677  G4double ran=R2*G4UniformRand();
678  if(ran>1.) ran=1.;
679  q2=-G4Log(1.-ran)/theB2;
680  if(q2<0.) q2=0.;
681  if(a<6.5) q2=G4Pow::GetInstance()->powA(q2,third);
682  else q2=G4Pow::GetInstance()->powA(q2,fifth);
683  }
684  else if(rand<I13)
685  {
686  G4double ran=R3*G4UniformRand();
687  if(ran>1.) ran=1.;
688  q2=-G4Log(1.-ran)/theB3;
689  if(q2<0.) q2=0.;
690  if(a>6.5) q2=G4Pow::GetInstance()->powA(q2,sevth);
691  }
692  else
693  {
694  G4double ran=R4*G4UniformRand();
695  if(ran>1.) ran=1.;
696  q2=-G4Log(1.-ran)/theB4;
697  if(a<6.5) q2=lastTM-q2; // u reduced for lightA (starts from 0)
698  }
699  }
700  if(q2<0.) q2=0.;
701  if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElasticCrossSect::GetExchangeT: -t="<<q2<<G4endl;
702  if(q2>lastTM)
703  {
704  q2=lastTM;
705  }
706  return q2*GeVSQ;
707 }
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 G4ChipsPionPlusElasticXS::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 154 of file G4ChipsPionPlusElasticXS.cc.

159 {
160  G4double pMom=Pt->GetTotalMomentum();
161  G4int tgN = A - tgZ;
162 
163  return GetChipsCrossSection(pMom, tgZ, tgN, 211);
164 }
G4ChipsPionPlusElasticXS::GetChipsCrossSection
virtual G4double GetChipsCrossSection(G4double momentum, G4int Z, G4int N, G4int pdg)
Definition: G4ChipsPionPlusElasticXS.cc:166
G4int
int G4int
Definition: G4Types.hh:78
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const
A
double A(double temperature)
Definition: G4DNAElectronHoleRecombination.cc:60
G4double
double G4double
Definition: G4Types.hh:76

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G4bool G4ChipsPionPlusElasticXS::IsIsoApplicable ( const G4DynamicParticle *  Pt,
G4int  Z,
G4int  A,
const G4Element *  elm,
const G4Material *  mat 
)
virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 145 of file G4ChipsPionPlusElasticXS.cc.

148 {
149  return true;
150 }
The documentation for this class was generated from the following files: