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geant4/source/processes/hadronic/cross_sections/src/G4ChipsHyperonElasticXS.cc
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Gabriele Cosmo db49709b53 Import Geant4 10.5.0 source tree
2018-12-07 15:15:39 +01:00

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//
// ********************************************************************
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//
// G4 Physics class: G4ChipsHyperonElasticXS for pA elastic cross sections
// Created: M.V. Kossov, CERN/ITEP(Moscow), 5-Feb-2010
// The last update: M.V. Kossov, CERN/ITEP (Moscow) 5-Feb-2010
//
// -------------------------------------------------------------------------------
// Short description: Interaction cross-sections for the elastic process.
// Class extracted from CHIPS and integrated in Geant4 by W.Pokorski
// -------------------------------------------------------------------------------
//
#include "G4ChipsHyperonElasticXS.hh"
#include "G4SystemOfUnits.hh"
#include "G4DynamicParticle.hh"
#include "G4ParticleDefinition.hh"
#include "G4Lambda.hh"
#include "G4SigmaPlus.hh"
#include "G4SigmaMinus.hh"
#include "G4SigmaZero.hh"
#include "G4XiMinus.hh"
#include "G4XiZero.hh"
#include "G4OmegaMinus.hh"
#include "G4Nucleus.hh"
#include "G4ParticleTable.hh"
#include "G4NucleiProperties.hh"
#include "G4IonTable.hh"
#include "G4Exp.hh"
#include "G4Log.hh"
#include "G4Pow.hh"
// factory
#include "G4CrossSectionFactory.hh"
//
G4_DECLARE_XS_FACTORY(G4ChipsHyperonElasticXS);
G4ChipsHyperonElasticXS::G4ChipsHyperonElasticXS():G4VCrossSectionDataSet(Default_Name()), nPoints(128), nLast(nPoints-1)
{
lPMin=-8.; //Min tabulatedLogarithmMomentum(D)
lPMax= 8.; //Max tabulatedLogarithmMomentum(D)
dlnP=(lPMax-lPMin)/nLast;// LogStep inTable (D)
onlyCS=true;//Flag toCalculOnlyCS(not Si/Bi)(L)
lastSIG=0.; //Last calculated cross section (L)
lastLP=-10.;//LastLog(mom_of IncidentHadron)(L)
lastTM=0.; //Last t_maximum (L)
theSS=0.; //TheLastSqSlope of 1st difr.Max(L)
theS1=0.; //TheLastMantissa of 1st difrMax(L)
theB1=0.; //TheLastSlope of 1st difructMax(L)
theS2=0.; //TheLastMantissa of 2nd difrMax(L)
theB2=0.; //TheLastSlope of 2nd difructMax(L)
theS3=0.; //TheLastMantissa of 3d difr.Max(L)
theB3=0.; //TheLastSlope of 3d difruct.Max(L)
theS4=0.; //TheLastMantissa of 4th difrMax(L)
theB4=0.; //TheLastSlope of 4th difructMax(L)
lastTZ=0; // Last atomic number of the target
lastTN=0; // Last # of neutrons in the target
lastPIN=0.; // Last initialized max momentum
lastCST=0; // Elastic cross-section table
lastPAR=0; // ParametersForFunctionCalculation
lastSST=0; // E-dep ofSqardSlope of 1st difMax
lastS1T=0; // E-dep of mantissa of 1st dif.Max
lastB1T=0; // E-dep of the slope of 1st difMax
lastS2T=0; // E-dep of mantissa of 2nd difrMax
lastB2T=0; // E-dep of the slope of 2nd difMax
lastS3T=0; // E-dep of mantissa of 3d difr.Max
lastB3T=0; // E-dep of the slope of 3d difrMax
lastS4T=0; // E-dep of mantissa of 4th difrMax
lastB4T=0; // E-dep of the slope of 4th difMax
lastN=0; // The last N of calculated nucleus
lastZ=0; // The last Z of calculated nucleus
lastP=0.; // LastUsed inCrossSection Momentum
lastTH=0.; // Last threshold momentum
lastCS=0.; // Last value of the Cross Section
lastI=0; // The last position in the DAMDB
}
G4ChipsHyperonElasticXS::~G4ChipsHyperonElasticXS()
{
std::vector<G4double*>::iterator pos;
for (pos=CST.begin(); pos<CST.end(); pos++)
{ delete [] *pos; }
CST.clear();
for (pos=PAR.begin(); pos<PAR.end(); pos++)
{ delete [] *pos; }
PAR.clear();
for (pos=SST.begin(); pos<SST.end(); pos++)
{ delete [] *pos; }
SST.clear();
for (pos=S1T.begin(); pos<S1T.end(); pos++)
{ delete [] *pos; }
S1T.clear();
for (pos=B1T.begin(); pos<B1T.end(); pos++)
{ delete [] *pos; }
B1T.clear();
for (pos=S2T.begin(); pos<S2T.end(); pos++)
{ delete [] *pos; }
S2T.clear();
for (pos=B2T.begin(); pos<B2T.end(); pos++)
{ delete [] *pos; }
B2T.clear();
for (pos=S3T.begin(); pos<S3T.end(); pos++)
{ delete [] *pos; }
S3T.clear();
for (pos=B3T.begin(); pos<B3T.end(); pos++)
{ delete [] *pos; }
B3T.clear();
for (pos=S4T.begin(); pos<S4T.end(); pos++)
{ delete [] *pos; }
S4T.clear();
for (pos=B4T.begin(); pos<B4T.end(); pos++)
{ delete [] *pos; }
B4T.clear();
}
void
G4ChipsHyperonElasticXS::CrossSectionDescription(std::ostream& outFile) const
{
outFile << "G4ChipsHyperonElasticXS provides the elastic cross\n"
<< "section for hyperon nucleus scattering as a function of incident\n"
<< "momentum. The cross section is calculated using M. Kossov's\n"
<< "CHIPS parameterization of cross section data.\n";
}
G4bool G4ChipsHyperonElasticXS::IsIsoApplicable(const G4DynamicParticle*, G4int, G4int,
const G4Element*,
const G4Material*)
{
return true;
}
// The main member function giving the collision cross section (P is in IU, CS is in mb)
// Make pMom in independent units ! (Now it is MeV)
G4double G4ChipsHyperonElasticXS::GetIsoCrossSection(const G4DynamicParticle* Pt, G4int tgZ, G4int A,
const G4Isotope*,
const G4Element*,
const G4Material*)
{
G4double pMom=Pt->GetTotalMomentum();
G4int tgN = A - tgZ;
G4int pdg = Pt->GetDefinition()->GetPDGEncoding();
return GetChipsCrossSection(pMom, tgZ, tgN, pdg);
}
G4double G4ChipsHyperonElasticXS::GetChipsCrossSection(G4double pMom, G4int tgZ, G4int tgN, G4int pPDG)
{
G4bool fCS = false;
G4double pEn=pMom;
onlyCS=fCS;
G4bool in=false; // By default the isotope must be found in the AMDB
lastP = 0.; // New momentum history (nothing to compare with)
lastN = tgN; // The last N of the calculated nucleus
lastZ = tgZ; // The last Z of the calculated nucleus
lastI = colN.size(); // Size of the Associative Memory DB in the heap
if(lastI) for(G4int i=0; i<lastI; i++) // Loop over proj/tgZ/tgN lines of DB
{ // The nucleus with projPDG is found in AMDB
if(colN[i]==tgN && colZ[i]==tgZ) // Isotope is foind in AMDB
{
lastI=i;
lastTH =colTH[i]; // Last THreshold (A-dependent)
if(pEn<=lastTH)
{
return 0.; // Energy is below the Threshold value
}
lastP =colP [i]; // Last Momentum (A-dependent)
lastCS =colCS[i]; // Last CrossSect (A-dependent)
// if(std::fabs(lastP/pMom-1.)<tolerance) //VI (do not use tolerance)
if(lastP == pMom) // Do not recalculate
{
CalculateCrossSection(fCS,-1,i,pPDG,lastZ,lastN,pMom); // Update param's only
return lastCS*millibarn; // Use theLastCS
}
in = true; // This is the case when the isotop is found in DB
// Momentum pMom is in IU ! @@ Units
lastCS=CalculateCrossSection(fCS,-1,i,pPDG,lastZ,lastN,pMom); // read & update
if(lastCS<=0. && pEn>lastTH) // Correct the threshold
{
lastTH=pEn;
}
break; // Go out of the LOOP with found lastI
}
} // End of attampt to find the nucleus in DB
if(!in) // This nucleus has not been calculated previously
{
//!!The slave functions must provide cross-sections in millibarns (mb) !! (not in IU)
lastCS=CalculateCrossSection(fCS,0,lastI,pPDG,lastZ,lastN,pMom);//calculate&create
if(lastCS<=0.)
{
lastTH = 0; //ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
if(pEn>lastTH)
{
lastTH=pEn;
}
}
colN.push_back(tgN);
colZ.push_back(tgZ);
colP.push_back(pMom);
colTH.push_back(lastTH);
colCS.push_back(lastCS);
return lastCS*millibarn;
} // End of creation of the new set of parameters
else
{
colP[lastI]=pMom;
colCS[lastI]=lastCS;
}
return lastCS*millibarn;
}
// Calculation of total elastic cross section (p in IU, CS in mb) @@ Units (?)
// F=0 - create AMDB, F=-1 - read&update AMDB, F=1 - update AMDB (sinchro with higher AMDB)
G4double G4ChipsHyperonElasticXS::CalculateCrossSection(G4bool CS,G4int F,G4int I,
G4int PDG, G4int tgZ, G4int tgN, G4double pIU)
{
G4double pMom=pIU/GeV; // All calculations are in GeV
onlyCS=CS; // Flag to calculate only CS (not Si/Bi)
lastLP=G4Log(pMom); // Make a logarithm of the momentum for calculation
if(F) // This isotope was found in AMDB =>RETRIEVE/UPDATE
{
if(F<0) // the AMDB must be loded
{
lastPIN = PIN[I]; // Max log(P) initialised for this table set
lastPAR = PAR[I]; // Pointer to the parameter set
lastCST = CST[I]; // Pointer to the total sross-section table
lastSST = SST[I]; // Pointer to the first squared slope
lastS1T = S1T[I]; // Pointer to the first mantissa
lastB1T = B1T[I]; // Pointer to the first slope
lastS2T = S2T[I]; // Pointer to the second mantissa
lastB2T = B2T[I]; // Pointer to the second slope
lastS3T = S3T[I]; // Pointer to the third mantissa
lastB3T = B3T[I]; // Pointer to the rhird slope
lastS4T = S4T[I]; // Pointer to the 4-th mantissa
lastB4T = B4T[I]; // Pointer to the 4-th slope
}
if(lastLP>lastPIN && lastLP<lPMax)
{
lastPIN=GetPTables(lastLP,lastPIN,PDG,tgZ,tgN);// Can update upper logP-Limit in tabs
PIN[I]=lastPIN; // Remember the new P-Limit of the tables
}
}
else // This isotope wasn't initialized => CREATE
{
lastPAR = new G4double[nPoints]; // Allocate memory for parameters of CS function
lastPAR[nLast]=0; // Initialization for VALGRIND
lastCST = new G4double[nPoints]; // Allocate memory for Tabulated CS function
lastSST = new G4double[nPoints]; // Allocate memory for Tabulated first sqaredSlope
lastS1T = new G4double[nPoints]; // Allocate memory for Tabulated first mantissa
lastB1T = new G4double[nPoints]; // Allocate memory for Tabulated first slope
lastS2T = new G4double[nPoints]; // Allocate memory for Tabulated second mantissa
lastB2T = new G4double[nPoints]; // Allocate memory for Tabulated second slope
lastS3T = new G4double[nPoints]; // Allocate memory for Tabulated third mantissa
lastB3T = new G4double[nPoints]; // Allocate memory for Tabulated third slope
lastS4T = new G4double[nPoints]; // Allocate memory for Tabulated 4-th mantissa
lastB4T = new G4double[nPoints]; // Allocate memory for Tabulated 4-th slope
lastPIN = GetPTables(lastLP,lPMin,PDG,tgZ,tgN); // Returns the new P-limit for tables
PIN.push_back(lastPIN); // Fill parameters of CS function to AMDB
PAR.push_back(lastPAR); // Fill parameters of CS function to AMDB
CST.push_back(lastCST); // Fill Tabulated CS function to AMDB
SST.push_back(lastSST); // Fill Tabulated first sq.slope to AMDB
S1T.push_back(lastS1T); // Fill Tabulated first mantissa to AMDB
B1T.push_back(lastB1T); // Fill Tabulated first slope to AMDB
S2T.push_back(lastS2T); // Fill Tabulated second mantissa to AMDB
B2T.push_back(lastB2T); // Fill Tabulated second slope to AMDB
S3T.push_back(lastS3T); // Fill Tabulated third mantissa to AMDB
B3T.push_back(lastB3T); // Fill Tabulated third slope to AMDB
S4T.push_back(lastS4T); // Fill Tabulated 4-th mantissa to AMDB
B4T.push_back(lastB4T); // Fill Tabulated 4-th slope to AMDB
} // End of creation/update of the new set of parameters and tables
// =-----------= NOW Update (if necessary) and Calculate the Cross Section =-----------=
if(lastLP>lastPIN && lastLP<lPMax)
{
lastPIN = GetPTables(lastLP,lastPIN,PDG,tgZ,tgN);
}
if(!onlyCS) lastTM=GetQ2max(PDG, tgZ, tgN, pMom); // Calculate (-t)_max=Q2_max (GeV2)
if(lastLP>lPMin && lastLP<=lastPIN) // Linear fit is made using precalculated tables
{
if(lastLP==lastPIN)
{
G4double shift=(lastLP-lPMin)/dlnP+.000001; // Log distance from lPMin
G4int blast=static_cast<int>(shift); // this is a bin number of the lower edge (0)
if(blast<0 || blast>=nLast)G4cout<<"G4QHyperElCS::CCS:b="<<blast<<","<<nLast<<G4endl;
lastSIG = lastCST[blast];
if(!onlyCS) // Skip the differential cross-section parameters
{
theSS = lastSST[blast];
theS1 = lastS1T[blast];
theB1 = lastB1T[blast];
theS2 = lastS2T[blast];
theB2 = lastB2T[blast];
theS3 = lastS3T[blast];
theB3 = lastB3T[blast];
theS4 = lastS4T[blast];
theB4 = lastB4T[blast];
}
}
else
{
G4double shift=(lastLP-lPMin)/dlnP; // a shift from the beginning of the table
G4int blast=static_cast<int>(shift); // the lower bin number
if(blast<0) blast=0;
if(blast>=nLast) blast=nLast-1; // low edge of the last bin
shift-=blast; // step inside the unit bin
G4int lastL=blast+1; // the upper bin number
G4double SIGL=lastCST[blast]; // the basic value of the cross-section
lastSIG= SIGL+shift*(lastCST[lastL]-SIGL); // calculated total elastic cross-section
if(!onlyCS) // Skip the differential cross-section parameters
{
G4double SSTL=lastSST[blast]; // the low bin of the first squared slope
theSS=SSTL+shift*(lastSST[lastL]-SSTL); // the basic value of the first sq.slope
G4double S1TL=lastS1T[blast]; // the low bin of the first mantissa
theS1=S1TL+shift*(lastS1T[lastL]-S1TL); // the basic value of the first mantissa
G4double B1TL=lastB1T[blast]; // the low bin of the first slope
theB1=B1TL+shift*(lastB1T[lastL]-B1TL); // the basic value of the first slope
G4double S2TL=lastS2T[blast]; // the low bin of the second mantissa
theS2=S2TL+shift*(lastS2T[lastL]-S2TL); // the basic value of the second mantissa
G4double B2TL=lastB2T[blast]; // the low bin of the second slope
theB2=B2TL+shift*(lastB2T[lastL]-B2TL); // the basic value of the second slope
G4double S3TL=lastS3T[blast]; // the low bin of the third mantissa
theS3=S3TL+shift*(lastS3T[lastL]-S3TL); // the basic value of the third mantissa
G4double B3TL=lastB3T[blast]; // the low bin of the third slope
theB3=B3TL+shift*(lastB3T[lastL]-B3TL); // the basic value of the third slope
G4double S4TL=lastS4T[blast]; // the low bin of the 4-th mantissa
theS4=S4TL+shift*(lastS4T[lastL]-S4TL); // the basic value of the 4-th mantissa
G4double B4TL=lastB4T[blast]; // the low bin of the 4-th slope
theB4=B4TL+shift*(lastB4T[lastL]-B4TL); // the basic value of the 4-th slope
}
}
}
else lastSIG=GetTabValues(lastLP, PDG, tgZ, tgN); // Direct calculation beyond the table
if(lastSIG<0.) lastSIG = 0.; // @@ a Warning print can be added
return lastSIG;
}
// It has parameter sets for all tZ/tN/PDG, using them the tables can be created/updated
G4double G4ChipsHyperonElasticXS::GetPTables(G4double LP, G4double ILP, G4int PDG,
G4int tgZ, G4int tgN)
{
// @@ At present all nA==pA ---------> Each neucleus can have not more than 51 parameters
static const G4double pwd=2727;
const G4int n_hypel=33; // #of parameters for pp-elastic (<nPoints=128)
// -0- -1- -2- -3- -4- -5- -6--7--8--9--10--11--12-13--14-
G4double hyp_el[n_hypel]={1.,.002,.12,.0557,3.5,6.72,99.,2.,3.,5.,74.,3.,3.4,.2,.17,
.001,8.,.055,3.64,5.e-5,4000.,1500.,.46,1.2e6,3.5e6,5.e-5,
1.e10,8.5e8,1.e10,1.1,3.4e6,6.8e6,0.};
// -15--16- -17- -18- -19- -20- -21- -22- -23- -24- -25-
// -26- -27- -28- -29- -30- -31- -32-
//AR-04Jun2014 if(PDG!=3222 && PDG>3000 && PDG<3335)
if(PDG>3000 && PDG<3335)
{
// -- Total pp elastic cross section cs & s1/b1 (main), s2/b2 (tail1), s3/b3 (tail2) --
//p2=p*p;p3=p2*p;sp=sqrt(p);p2s=p2*sp;lp=log(p);dl1=lp-(3.=par(3));p4=p2*p2; p=|3-mom|
//CS=2.865/p2s/(1+.0022/p2s)+(18.9+.6461*dl1*dl1+9./p)/(1.+.425*lp)/(1.+.4276/p4);
// par(0) par(7) par(1) par(2) par(4) par(5) par(6)
//dl2=lp-5., s1=(74.+3.*dl2*dl2)/(1+3.4/p4/p)+(.2/p2+17.*p)/(p4+.001*sp),
// par(8) par(9) par(10) par(11) par(12)par(13) par(14)
// b1=8.*p**.055/(1.+3.64/p3); s2=5.e-5+4000./(p4+1500.*p); b2=.46+1.2e6/(p4+3.5e6/sp);
// par(15) par(16) par(17) par(18) par(19) par(20) par(21) par(22) par(23)
// s3=5.e-5+1.e10/(p4*p4+8.5e8*p2+1.e10); b3=1.1+3.4e6/(p4+6.8e6); ss=0.
// par(24) par(25) par(26) par(27) par(28) par(29) par(30) par(31)
//
if(lastPAR[nLast]!=pwd) // A unique flag to avoid the repeatable definition
{
if ( tgZ == 1 && tgN == 0 )
{
for (G4int ip=0; ip<n_hypel; ip++) lastPAR[ip]=hyp_el[ip]; // Hyperon+P
}
else
{
G4double a=tgZ+tgN;
G4double sa=std::sqrt(a);
G4double ssa=std::sqrt(sa);
G4double asa=a*sa;
G4double a2=a*a;
G4double a3=a2*a;
G4double a4=a3*a;
G4double a5=a4*a;
G4double a6=a4*a2;
G4double a7=a6*a;
G4double a8=a7*a;
G4double a9=a8*a;
G4double a10=a5*a5;
G4double a12=a6*a6;
G4double a14=a7*a7;
G4double a16=a8*a8;
G4double a17=a16*a;
//G4double a20=a16*a4;
G4double a32=a16*a16;
// Reaction cross-section parameters (pel=peh_fit.f)
lastPAR[0]=4./(1.+22/asa); // p1
lastPAR[1]=2.36*asa/(1.+a*.055/ssa); // p2
lastPAR[2]=(1.+.00007*a3/ssa)/(1.+.0026*a2); // p3
lastPAR[3]=1.76*a/ssa+.00003*a3; // p4
lastPAR[4]=(.03+200./a3)/(1.+1.E5/a3/sa); // p5
lastPAR[5]=5.; // p6
lastPAR[6]=0.; // p7 not used
lastPAR[7]=0.; // p8 not used
lastPAR[8]=0.; // p9 not used
// @@ the differential cross-section is parameterized separately for A>6 & A<7
if(a<6.5)
{
G4double a28=a16*a12;
// The main pre-exponent (pel_sg)
lastPAR[ 9]=4000*a; // p1
lastPAR[10]=1.2e7*a8+380*a17; // p2
lastPAR[11]=.7/(1.+4.e-12*a16); // p3
lastPAR[12]=2.5/a8/(a4+1.e-16*a32); // p4
lastPAR[13]=.28*a; // p5
lastPAR[14]=1.2*a2+2.3; // p6
lastPAR[15]=3.8/a; // p7
// The main slope (pel_sl)
lastPAR[16]=.01/(1.+.0024*a5); // p1
lastPAR[17]=.2*a; // p2
lastPAR[18]=9.e-7/(1.+.035*a5); // p3
lastPAR[19]=(42.+2.7e-11*a16)/(1.+.14*a); // p4
// The main quadratic (pel_sh)
lastPAR[20]=2.25*a3; // p1
lastPAR[21]=18.; // p2
lastPAR[22]=2.4e-3*a8/(1.+2.6e-4*a7); // p3
lastPAR[23]=3.5e-36*a32*a8/(1.+5.e-15*a32/a); // p4
// The 1st max pre-exponent (pel_qq)
lastPAR[24]=1.e5/(a8+2.5e12/a16); // p1
lastPAR[25]=8.e7/(a12+1.e-27*a28*a28); // p2
lastPAR[26]=.0006*a3; // p3
// The 1st max slope (pel_qs)
lastPAR[27]=10.+4.e-8*a12*a; // p1
lastPAR[28]=.114; // p2
lastPAR[29]=.003; // p3
lastPAR[30]=2.e-23; // p4
// The effective pre-exponent (pel_ss)
lastPAR[31]=1./(1.+.0001*a8); // p1
lastPAR[32]=1.5e-4/(1.+5.e-6*a12); // p2
lastPAR[33]=.03; // p3
// The effective slope (pel_sb)
lastPAR[34]=a/2; // p1
lastPAR[35]=2.e-7*a4; // p2
lastPAR[36]=4.; // p3
lastPAR[37]=64./a3; // p4
// The gloria pre-exponent (pel_us)
lastPAR[38]=1.e8*G4Exp(.32*asa); // p1
lastPAR[39]=20.*G4Exp(.45*asa); // p2
lastPAR[40]=7.e3+2.4e6/a5; // p3
lastPAR[41]=2.5e5*G4Exp(.085*a3); // p4
lastPAR[42]=2.5*a; // p5
// The gloria slope (pel_ub)
lastPAR[43]=920.+.03*a8*a3; // p1
lastPAR[44]=93.+.0023*a12; // p2
}
else
{
G4double p1a10=2.2e-28*a10;
G4double r4a16=6.e14/a16;
G4double s4a16=r4a16*r4a16;
// a24
// a36
// The main pre-exponent (peh_sg)
lastPAR[ 9]=4.5*G4Pow::GetInstance()->powA(a,1.15); // p1
lastPAR[10]=.06*G4Pow::GetInstance()->powA(a,.6); // p2
lastPAR[11]=.6*a/(1.+2.e15/a16); // p3
lastPAR[12]=.17/(a+9.e5/a3+1.5e33/a32); // p4
lastPAR[13]=(.001+7.e-11*a5)/(1.+4.4e-11*a5); // p5
lastPAR[14]=(p1a10*p1a10+2.e-29)/(1.+2.e-22*a12); // p6
// The main slope (peh_sl)
lastPAR[15]=400./a12+2.e-22*a9; // p1
lastPAR[16]=1.e-32*a12/(1.+5.e22/a14); // p2
lastPAR[17]=1000./a2+9.5*sa*ssa; // p3
lastPAR[18]=4.e-6*a*asa+1.e11/a16; // p4
lastPAR[19]=(120./a+.002*a2)/(1.+2.e14/a16); // p5
lastPAR[20]=9.+100./a; // p6
// The main quadratic (peh_sh)
lastPAR[21]=.002*a3+3.e7/a6; // p1
lastPAR[22]=7.e-15*a4*asa; // p2
lastPAR[23]=9000./a4; // p3
// The 1st max pre-exponent (peh_qq)
lastPAR[24]=.0011*asa/(1.+3.e34/a32/a4); // p1
lastPAR[25]=1.e-5*a2+2.e14/a16; // p2
lastPAR[26]=1.2e-11*a2/(1.+1.5e19/a12); // p3
lastPAR[27]=.016*asa/(1.+5.e16/a16); // p4
// The 1st max slope (peh_qs)
lastPAR[28]=.002*a4/(1.+7.e7/G4Pow::GetInstance()->powA(a-6.83,14)); // p1
lastPAR[29]=2.e6/a6+7.2/G4Pow::GetInstance()->powA(a,.11); // p2
lastPAR[30]=11.*a3/(1.+7.e23/a16/a8); // p3
lastPAR[31]=100./asa; // p4
// The 2nd max pre-exponent (peh_ss)
lastPAR[32]=(.1+4.4e-5*a2)/(1.+5.e5/a4); // p1
lastPAR[33]=3.5e-4*a2/(1.+1.e8/a8); // p2
lastPAR[34]=1.3+3.e5/a4; // p3
lastPAR[35]=500./(a2+50.)+3; // p4
lastPAR[36]=1.e-9/a+s4a16*s4a16; // p5
// The 2nd max slope (peh_sb)
lastPAR[37]=.4*asa+3.e-9*a6; // p1
lastPAR[38]=.0005*a5; // p2
lastPAR[39]=.002*a5; // p3
lastPAR[40]=10.; // p4
// The effective pre-exponent (peh_us)
lastPAR[41]=.05+.005*a; // p1
lastPAR[42]=7.e-8/sa; // p2
lastPAR[43]=.8*sa; // p3
lastPAR[44]=.02*sa; // p4
lastPAR[45]=1.e8/a3; // p5
lastPAR[46]=3.e32/(a32+1.e32); // p6
// The effective slope (peh_ub)
lastPAR[47]=24.; // p1
lastPAR[48]=20./sa; // p2
lastPAR[49]=7.e3*a/(sa+1.); // p3
lastPAR[50]=900.*sa/(1.+500./a3); // p4
}
// Parameter for lowEnergyNeutrons
lastPAR[51]=1.e15+2.e27/a4/(1.+2.e-18*a16);
}
lastPAR[nLast]=pwd;
// and initialize the zero element of the table
G4double lp=lPMin; // ln(momentum)
G4bool memCS=onlyCS; // ??
onlyCS=false;
lastCST[0]=GetTabValues(lp, PDG, tgZ, tgN); // Calculate AMDB tables
onlyCS=memCS;
lastSST[0]=theSS;
lastS1T[0]=theS1;
lastB1T[0]=theB1;
lastS2T[0]=theS2;
lastB2T[0]=theB2;
lastS3T[0]=theS3;
lastB3T[0]=theB3;
lastS4T[0]=theS4;
lastB4T[0]=theB4;
}
if(LP>ILP)
{
G4int ini = static_cast<int>((ILP-lPMin+.000001)/dlnP)+1; // already inited till this
if(ini<0) ini=0;
if(ini<nPoints)
{
G4int fin = static_cast<int>((LP-lPMin)/dlnP)+1; // final bin of initialization
if(fin>=nPoints) fin=nLast; // Limit of the tabular initialization
if(fin>=ini)
{
G4double lp=0.;
for(G4int ip=ini; ip<=fin; ip++) // Calculate tabular CS,S1,B1,S2,B2,S3,B3
{
lp=lPMin+ip*dlnP; // ln(momentum)
G4bool memCS=onlyCS;
onlyCS=false;
lastCST[ip]=GetTabValues(lp, PDG, tgZ, tgN); // Calculate AMDB tables (ret CS)
onlyCS=memCS;
lastSST[ip]=theSS;
lastS1T[ip]=theS1;
lastB1T[ip]=theB1;
lastS2T[ip]=theS2;
lastB2T[ip]=theB2;
lastS3T[ip]=theS3;
lastB3T[ip]=theB3;
lastS4T[ip]=theS4;
lastB4T[ip]=theB4;
}
return lp;
}
else G4cout<<"*Warning*G4ChipsHyperonElasticXS::GetPTables: PDG="<<PDG
<<", Z="<<tgZ<<", N="<<tgN<<", i="<<ini<<" > fin="<<fin<<", LP="<<LP
<<" > ILP="<<ILP<<" nothing is done!"<<G4endl;
}
else G4cout<<"*Warning*G4ChipsHyperonElasticXS::GetPTables: PDG="<<PDG
<<", Z="<<tgZ<<", N="<<tgN<<", i="<<ini<<">= max="<<nPoints<<", LP="<<LP
<<" > ILP="<<ILP<<", lPMax="<<lPMax<<" nothing is done!"<<G4endl;
}
} else {
// G4cout<<"*Error*G4ChipsHyperonElasticXS::GetPTables: PDG="<<PDG<<", Z="<<tgZ
// <<", N="<<tgN<<", while it is defined only for Hyperons"<<G4endl;
// throw G4QException("G4ChipsHyperonElasticXS::GetPTables:onlyaBA implemented");
G4ExceptionDescription ed;
ed << "PDG = " << PDG << ", Z = " << tgZ << ", N = " << tgN
<< ", while it is defined only for Hyperons" << G4endl;
G4Exception("G4ChipsHyperonElasticXS::GetPTables()", "HAD_CHPS_0000",
FatalException, ed);
}
return ILP;
}
// Returns Q2=-t in independent units (MeV^2) (all internal calculations are in GeV)
G4double G4ChipsHyperonElasticXS::GetExchangeT(G4int tgZ, G4int tgN, G4int PDG)
{
static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
static const G4double third=1./3.;
static const G4double fifth=1./5.;
static const G4double sevth=1./7.;
//AR-04Jun2014 if(PDG==3222 || PDG<3000 || PDG>3334)G4cout<<"*Warning*G4QHyElCS::GET:PDG="<<PDG<<G4endl;
if(PDG<3000 || PDG>3334)G4cout<<"*Warning*G4QHyElCS::GET:PDG="<<PDG<<G4endl;
if(onlyCS)G4cout<<"*Warning*G4ChipsHyperonElasticXS::GetExchanT: onlyCS=1"<<G4endl;
if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
G4double q2=0.;
if(tgZ==1 && tgN==0) // ===> p+p=p+p
{
G4double E1=lastTM*theB1;
G4double R1=(1.-G4Exp(-E1));
G4double E2=lastTM*theB2;
G4double R2=(1.-G4Exp(-E2*E2*E2));
G4double E3=lastTM*theB3;
G4double R3=(1.-G4Exp(-E3));
G4double I1=R1*theS1/theB1;
G4double I2=R2*theS2;
G4double I3=R3*theS3;
G4double I12=I1+I2;
G4double rand=(I12+I3)*G4UniformRand();
if (rand<I1 )
{
G4double ran=R1*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB1;
}
else if(rand<I12)
{
G4double ran=R2*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran);
if(q2<0.) q2=0.;
q2=G4Pow::GetInstance()->powA(q2,third)/theB2;
}
else
{
G4double ran=R3*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB3;
}
}
else
{
G4double a=tgZ+tgN;
G4double E1=lastTM*(theB1+lastTM*theSS);
G4double R1=(1.-G4Exp(-E1));
G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
G4double tm2=lastTM*lastTM;
G4double E2=lastTM*tm2*theB2; // power 3 for lowA, 5 for HighA (1st)
if(a>6.5)E2*=tm2; // for heavy nuclei
G4double R2=(1.-G4Exp(-E2));
G4double E3=lastTM*theB3;
if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
G4double R3=(1.-G4Exp(-E3));
G4double E4=lastTM*theB4;
G4double R4=(1.-G4Exp(-E4));
G4double I1=R1*theS1;
G4double I2=R2*theS2;
G4double I3=R3*theS3;
G4double I4=R4*theS4;
G4double I12=I1+I2;
G4double I13=I12+I3;
G4double rand=(I13+I4)*G4UniformRand();
if(rand<I1)
{
G4double ran=R1*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB1;
if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
}
else if(rand<I12)
{
G4double ran=R2*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB2;
if(q2<0.) q2=0.;
if(a<6.5) q2=G4Pow::GetInstance()->powA(q2,third);
else q2=G4Pow::GetInstance()->powA(q2,fifth);
}
else if(rand<I13)
{
G4double ran=R3*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB3;
if(q2<0.) q2=0.;
if(a>6.5) q2=G4Pow::GetInstance()->powA(q2,sevth);
}
else
{
G4double ran=R4*G4UniformRand();
if(ran>1.) ran=1.;
q2=-G4Log(1.-ran)/theB4;
if(a<6.5) q2=lastTM-q2; // u reduced for lightA (starts from 0)
}
}
if(q2<0.) q2=0.;
if(!(q2>=-1.||q2<=1.))G4cout<<"*NAN*G4QHyElasticCrossSect::GetExchangeT:-t="<<q2<<G4endl;
if(q2>lastTM)
{
q2=lastTM;
}
return q2*GeVSQ;
}
// Returns B in independent units (MeV^-2) (all internal calculations are in GeV) see ExT
G4double G4ChipsHyperonElasticXS::GetSlope(G4int tgZ, G4int tgN, G4int PDG)
{
static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
if(onlyCS)G4cout<<"*Warning*G4ChipsHyperonElasticXS::GetSlope: onlCS=true"<<G4endl;
if(lastLP<-4.3) return 0.; // S-wave for p<14 MeV/c (kinE<.1MeV)
//AR-04Jun2014 if(PDG==3222 || PDG<3000 || PDG>3334)
if(PDG<3000 || PDG>3334)
{
// G4cout<<"*Error*G4ChipsHyperonElasticXS::GetSlope: PDG="<<PDG<<", Z="<<tgZ
// <<", N="<<tgN<<", while it is defined only for Hyperons"<<G4endl;
// throw G4QException("G4ChipsHyperonElasticXS::GetSlope: HypA are implemented");
G4ExceptionDescription ed;
ed << "PDG = " << PDG << ", Z = " << tgZ << ", N = " << tgN
<< ", while it is defined only for Hyperons" << G4endl;
G4Exception("G4ChipsHyperonElasticXS::GetSlope()", "HAD_CHPS_0000",
FatalException, ed);
}
if(theB1<0.) theB1=0.;
if(!(theB1>=-1.||theB1<=1.)) G4cout<<"*NAN*G4QHyElasticCrossS::Getslope:"<<theB1<<G4endl;
return theB1/GeVSQ;
}
// Returns half max(Q2=-t) in independent units (MeV^2)
G4double G4ChipsHyperonElasticXS::GetHMaxT()
{
static const G4double HGeVSQ=gigaelectronvolt*gigaelectronvolt/2.;
return lastTM*HGeVSQ;
}
// lastLP is used, so calculating tables, one need to remember and then recover lastLP
G4double G4ChipsHyperonElasticXS::GetTabValues(G4double lp, G4int PDG, G4int tgZ,
G4int tgN)
{
//AR-04Jun2014 if(PDG==3222 || PDG<3000 || PDG>3334) G4cout<<"*Warning*G4QHypElCS::GTV:P="<<PDG<<G4endl;
if(PDG<3000 || PDG>3334) G4cout<<"*Warning*G4QHypElCS::GTV:P="<<PDG<<G4endl;
//AR-24Apr2018 Switch to allow transuranic elements
const G4bool isHeavyElementAllowed = true;
if(tgZ<0 || ( !isHeavyElementAllowed && tgZ>92))
{
G4cout<<"*Warning*G4QHyperonElastCS::GetTabValue:(1-92) NoIsotopesFor Z="<<tgZ<<G4endl;
return 0.;
}
G4int iZ=tgZ-1; // Z index
if(iZ<0)
{
iZ=0; // conversion of the neutron target to the proton target
tgZ=1;
tgN=0;
}
G4double p=G4Exp(lp); // momentum
G4double sp=std::sqrt(p); // sqrt(p)
G4double p2=p*p;
G4double p3=p2*p;
G4double p4=p3*p;
if ( tgZ == 1 && tgN == 0 ) // Hyperon+P
{
G4double dl2=lp-lastPAR[9];
theSS=lastPAR[32];
theS1=(lastPAR[10]+lastPAR[11]*dl2*dl2)/(1.+lastPAR[12]/p4/p)+
(lastPAR[13]/p2+lastPAR[14]*p)/(p4+lastPAR[15]*sp);
theB1=lastPAR[16]*G4Pow::GetInstance()->powA(p,lastPAR[17])/(1.+lastPAR[18]/p3);
theS2=lastPAR[19]+lastPAR[20]/(p4+lastPAR[21]*p);
theB2=lastPAR[22]+lastPAR[23]/(p4+lastPAR[24]/sp);
theS3=lastPAR[25]+lastPAR[26]/(p4*p4+lastPAR[27]*p2+lastPAR[28]);
theB3=lastPAR[29]+lastPAR[30]/(p4+lastPAR[31]);
theS4=0.;
theB4=0.;
// Returns the total elastic pim-p cross-section (to avoid spoiling lastSIG)
G4double dp=lp-lastPAR[4];
return lastPAR[0]/(lastPAR[1]+p2*(lastPAR[2]+p2))+(lastPAR[3]*dp*dp+lastPAR[5]+
lastPAR[6]/p2)/(1.+lastPAR[7]/sp+lastPAR[8]/p4);
}
else
{
G4double p5=p4*p;
G4double p6=p5*p;
G4double p8=p6*p2;
G4double p10=p8*p2;
G4double p12=p10*p2;
G4double p16=p8*p8;
//G4double p24=p16*p8;
G4double dl=lp-5.;
G4double a=tgZ+tgN;
G4double pah=G4Pow::GetInstance()->powA(p,a/2);
G4double pa=pah*pah;
G4double pa2=pa*pa;
if(a<6.5)
{
theS1=lastPAR[9]/(1.+lastPAR[10]*p4*pa)+lastPAR[11]/(p4+lastPAR[12]*p4/pa2)+
(lastPAR[13]*dl*dl+lastPAR[14])/(1.+lastPAR[15]/p2);
theB1=(lastPAR[16]+lastPAR[17]*p2)/(p4+lastPAR[18]/pah)+lastPAR[19];
theSS=lastPAR[20]/(1.+lastPAR[21]/p2)+lastPAR[22]/(p6/pa+lastPAR[23]/p16);
theS2=lastPAR[24]/(pa/p2+lastPAR[25]/p4)+lastPAR[26];
theB2=lastPAR[27]*G4Pow::GetInstance()->powA(p,lastPAR[28])+lastPAR[29]/(p8+lastPAR[30]/p16);
theS3=lastPAR[31]/(pa*p+lastPAR[32]/pa)+lastPAR[33];
theB3=lastPAR[34]/(p3+lastPAR[35]/p6)+lastPAR[36]/(1.+lastPAR[37]/p2);
theS4=p2*(pah*lastPAR[38]*G4Exp(-pah*lastPAR[39])+
lastPAR[40]/(1.+lastPAR[41]*G4Pow::GetInstance()->powA(p,lastPAR[42])));
theB4=lastPAR[43]*pa/p2/(1.+pa*lastPAR[44]);
}
else
{
theS1=lastPAR[9]/(1.+lastPAR[10]/p4)+lastPAR[11]/(p4+lastPAR[12]/p2)+
lastPAR[13]/(p5+lastPAR[14]/p16);
theB1=(lastPAR[15]/p8+lastPAR[19])/(p+lastPAR[16]/G4Pow::GetInstance()->powA(p,lastPAR[20]))+
lastPAR[17]/(1.+lastPAR[18]/p4);
theSS=lastPAR[21]/(p4/G4Pow::GetInstance()->powA(p,lastPAR[23])+lastPAR[22]/p4);
theS2=lastPAR[24]/p4/(G4Pow::GetInstance()->powA(p,lastPAR[25])+lastPAR[26]/p12)+lastPAR[27];
theB2=lastPAR[28]/G4Pow::GetInstance()->powA(p,lastPAR[29])+lastPAR[30]/G4Pow::GetInstance()->powA(p,lastPAR[31]);
theS3=lastPAR[32]/G4Pow::GetInstance()->powA(p,lastPAR[35])/(1.+lastPAR[36]/p12)+
lastPAR[33]/(1.+lastPAR[34]/p6);
theB3=lastPAR[37]/p8+lastPAR[38]/p2+lastPAR[39]/(1.+lastPAR[40]/p8);
theS4=(lastPAR[41]/p4+lastPAR[46]/p)/(1.+lastPAR[42]/p10)+
(lastPAR[43]+lastPAR[44]*dl*dl)/(1.+lastPAR[45]/p12);
theB4=lastPAR[47]/(1.+lastPAR[48]/p)+lastPAR[49]*p4/(1.+lastPAR[50]*p5);
}
// Returns the total elastic (n/p)A cross-section (to avoid spoiling lastSIG)
G4double dlp=lp-lastPAR[5]; // ax
// p1 p2 p3 p4 p5
return (lastPAR[0]*dlp*dlp+lastPAR[1])/(1.+lastPAR[2]/p)+lastPAR[3]/(p3+lastPAR[4]);
}
return 0.;
} // End of GetTableValues
// Returns max -t=Q2 (GeV^2) for the momentum pP(GeV) and the target nucleus (tgN,tgZ)
G4double G4ChipsHyperonElasticXS::GetQ2max(G4int PDG, G4int tgZ, G4int tgN,
G4double pP)
{
static const G4double mLamb= G4Lambda::Lambda()->GetPDGMass()*.001; // MeV to GeV
static const G4double mLa2= mLamb*mLamb;
G4double pP2=pP*pP; // squared momentum of the projectile
if(tgZ || tgN>-1) // --> Hyperon-A
{
G4double mt=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIon(tgZ,tgZ+tgN,0)->GetPDGMass()*.001; // Target mass in GeV
G4double dmt=mt+mt;
G4double mds=dmt*std::sqrt(pP2+mLa2)+mLa2+mt*mt; // Mondelstam mds (@@ other hyperons?)
return dmt*dmt*pP2/mds;
}
else
{
// G4cout<<"*Error*G4ChipsHyperonElasticXS::GetQ2ma:PDG="<<PDG<<",Z="<<tgZ<<",N="
// <<tgN<<", while it is defined only for p projectiles & Z_target>0"<<G4endl;
// throw G4QException("G4ChipsHyperonElasticXS::GetQ2max: only HyperA implemented");
G4ExceptionDescription ed;
ed << "PDG = " << PDG << ", Z = " << tgZ << ", N = " << tgN
<< ", while it is defined only for p projectiles & Z_target>0" << G4endl;
G4Exception("G4ChipsHyperonElasticXS::GetQ2max()", "HAD_CHPS_0000",
FatalException, ed);
return 0;
}
}
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