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This commit is contained in:
Gabriele Cosmo
2016-06-09 17:01:34 +02:00
parent b1eb5424d2
commit e2d2f9810a
10384 changed files with 698580 additions and 628834 deletions
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source/processes/hadronic/models/quasi_elastic/src/G4NeutronElasticCrossSection.cc
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source/processes/hadronic/models/quasi_elastic/src/G4ProtonElasticCrossSection.cc
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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
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// * conditions of the Geant4 Software License, included in the file *
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// * *
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// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
// $Id: G4ProtonElasticCrossSection.cc,v 1.4 2010-06-25 09:45:53 gunter Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
//
// G4 Physics class: G4ProtonElasticCrossSection for pA elastic cross sections
// Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-01
// The last update: M.V. Kossov, CERN/ITEP (Moscow) 12-Jan-10 (from G4QElCrSect)
//
// -------------------------------------------------------------------------------
// This class has been extracted from the CHIPS model.
// All the dependencies on CHIPS classes have been removed.
//
// Short description: Interaction cross-sections for the elastic process
// -------------------------------------------------------------------------------
//#define debug
//#define isodebug
//#define pdebug
//#define ppdebug
//#define tdebug
//#define sdebug
#include "G4ProtonElasticCrossSection.hh"
#include "G4Nucleus.hh"
// Initialization of the static parameters
const G4int G4ProtonElasticCrossSection::nPoints=128;//#ofPt in the AMDB table(>anyPar)(D)
const G4int G4ProtonElasticCrossSection::nLast=nPoints-1;// theLastElement in the table(D)
G4double G4ProtonElasticCrossSection::lPMin=-8.; // Min tabulated logarithmicMomentum(D)
G4double G4ProtonElasticCrossSection::lPMax= 8.; // Max tabulated logarithmicMomentum(D)
G4double G4ProtonElasticCrossSection::dlnP=(lPMax-lPMin)/nLast;// LogStep in the table(D)
G4bool G4ProtonElasticCrossSection::onlyCS=true;// Flag toCalculateOnlyCS(not Si/Bi)(L)
G4double G4ProtonElasticCrossSection::lastSIG=0.; // Last calculated cross section (L)
G4double G4ProtonElasticCrossSection::lastLP=-10.;// Last log(mom_ofTheIncidentHadron)(L)
G4double G4ProtonElasticCrossSection::lastTM=0.; // Last t_maximum (L)
G4double G4ProtonElasticCrossSection::theSS=0.; // The Last sq.slope of 1st difr.Max(L)
G4double G4ProtonElasticCrossSection::theS1=0.; // The Last mantissa of 1st difr.Max(L)
G4double G4ProtonElasticCrossSection::theB1=0.; // The Last slope of 1st difruct.Max(L)
G4double G4ProtonElasticCrossSection::theS2=0.; // The Last mantissa of 2nd difr.Max(L)
G4double G4ProtonElasticCrossSection::theB2=0.; // The Last slope of 2nd difruct.Max(L)
G4double G4ProtonElasticCrossSection::theS3=0.; // The Last mantissa of 3d difr. Max(L)
G4double G4ProtonElasticCrossSection::theB3=0.; // The Last slope of 3d difruct. Max(L)
G4double G4ProtonElasticCrossSection::theS4=0.; // The Last mantissa of 4th difr.Max(L)
G4double G4ProtonElasticCrossSection::theB4=0.; // The Last slope of 4th difruct.Max(L)
G4int G4ProtonElasticCrossSection::lastTZ=0; // Last atomic number of the target
G4int G4ProtonElasticCrossSection::lastTN=0; // Last # of neutrons in the target
G4double G4ProtonElasticCrossSection::lastPIN=0.; // Last initialized max momentum
G4double* G4ProtonElasticCrossSection::lastCST=0; // Elastic cross-section table
G4double* G4ProtonElasticCrossSection::lastPAR=0; // Parameters for FunctionalCalculation
G4double* G4ProtonElasticCrossSection::lastSST=0; // E-dep of sq.slope of the 1st dif.Max
G4double* G4ProtonElasticCrossSection::lastS1T=0; // E-dep of mantissa of the 1st dif.Max
G4double* G4ProtonElasticCrossSection::lastB1T=0; // E-dep of the slope of the 1st difMax
G4double* G4ProtonElasticCrossSection::lastS2T=0; // E-dep of mantissa of the 2nd difrMax
G4double* G4ProtonElasticCrossSection::lastB2T=0; // E-dep of the slope of the 2nd difMax
G4double* G4ProtonElasticCrossSection::lastS3T=0; // E-dep of mantissa of the 3d difr.Max
G4double* G4ProtonElasticCrossSection::lastB3T=0; // E-dep of the slope of the 3d difrMax
G4double* G4ProtonElasticCrossSection::lastS4T=0; // E-dep of mantissa of the 4th difrMax
G4double* G4ProtonElasticCrossSection::lastB4T=0; // E-dep of the slope of the 4th difMax
G4int G4ProtonElasticCrossSection::lastN=0; // The last N of calculated nucleus
G4int G4ProtonElasticCrossSection::lastZ=0; // The last Z of calculated nucleus
G4double G4ProtonElasticCrossSection::lastP=0.; // Last used in cross section Momentum
G4double G4ProtonElasticCrossSection::lastTH=0.; // Last threshold momentum
G4double G4ProtonElasticCrossSection::lastCS=0.; // Last value of the Cross Section
G4int G4ProtonElasticCrossSection::lastI=0; // The last position in the DAMDB
std::vector<G4double*> G4ProtonElasticCrossSection::PAR; // Vector of pars for functCalcul
std::vector<G4double*> G4ProtonElasticCrossSection::CST; // Vector of cross-section table
std::vector<G4double*> G4ProtonElasticCrossSection::SST; // Vector of the 1st SquaredSlope
std::vector<G4double*> G4ProtonElasticCrossSection::S1T; // Vector of the 1st mantissa
std::vector<G4double*> G4ProtonElasticCrossSection::B1T; // Vector of the 1st slope
std::vector<G4double*> G4ProtonElasticCrossSection::S2T; // Vector of the 2nd mantissa
std::vector<G4double*> G4ProtonElasticCrossSection::B2T; // Vector of the 2nd slope
std::vector<G4double*> G4ProtonElasticCrossSection::S3T; // Vector of the 3d mantissa
std::vector<G4double*> G4ProtonElasticCrossSection::B3T; // Vector of the 3d slope
std::vector<G4double*> G4ProtonElasticCrossSection::S4T; // Vector of the 4th mantissa (g)
std::vector<G4double*> G4ProtonElasticCrossSection::B4T; // Vector of the 4th slope (glor)
G4ProtonElasticCrossSection::G4ProtonElasticCrossSection()
{
}
G4ProtonElasticCrossSection::~G4ProtonElasticCrossSection()
{
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();
}
// Returns Pointer to the G4VQCrossSection class
G4VCrossSection* G4ProtonElasticCrossSection::GetPointer()
{
static G4ProtonElasticCrossSection theCrossSection;//*StaticBody of theQEl CrossSection*
return &theCrossSection;
}
// 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 G4ProtonElasticCrossSection::GetCrossSection(G4bool fCS,G4double pMom, G4int tgZ,
G4int tgN, G4int pPDG)
{
static std::vector <G4int> colN; // Vector of N for calculated nuclei (isotops)
static std::vector <G4int> colZ; // Vector of Z for calculated nuclei (isotops)
static std::vector <G4double> colP; // Vector of last momenta for the reaction
static std::vector <G4double> colTH; // Vector of energy thresholds for the reaction
static std::vector <G4double> colCS; // Vector of last cross sections for the reaction
// ***---*** End of the mandatory Static Definitions of the Associative Memory ***---***
G4double pEn=pMom;
onlyCS=fCS;
if(pPDG!=2212)
{
G4cout<<"*Warning*G4ProtonElCS::GetCS: *** Found pPDG="<<pPDG<<" =--=> CS=0"<<G4endl;
//CalculateCrossSection(fCS,-27,j,pPDG,lastZ,lastN,pMom); // DUMMY TEST
return 0.; // projectile PDG=0 is a mistake (?!) @@
}
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 = 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 G4ProtonElasticCrossSection::CalculateCrossSection(G4bool CS, G4int F, G4int I,
G4int PDG, G4int tgZ, G4int tgN, G4double pIU)
{
// *** Begin of Associative Memory DB for acceleration of the cross section calculations
static std::vector <G4double> PIN; // Vector of max initialized log(P) in the table
// *** End of Static Definitions (Associative Memory Data Base) ***
G4double pMom=pIU/GeV; // All calculations are in GeV
onlyCS=CS; // Flag to calculate only CS (not Si/Bi)
lastLP=std::log(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<<"G4EleastCS::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 G4ProtonElasticCrossSection::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_npel=24; // #of parameters for np-elastic (<nPoints=128)
const G4int n_ppel=32; // #of parameters for pp-elastic (<nPoints=128)
// -0- -1- -2- -3- -4- -5- -6- -7- -8- -9--10--11--12--13- -14-
G4double np_el[n_npel]={12.,.05,.0001,5.,.35,6.75,.14,19.,.6,6.75,.14,13.,.14,.6,.00013,
75.,.001,7.2,4.32,.012,2.5,0.0,12.,.34};
// -15--16--17- -18- -19--20--21--22--23-
// -0- -1- -2- -3- -4- -5- -6- -7- -8--9--10--11--12--13-
G4double pp_el[n_ppel]={2.865,18.9,.6461,3.,9.,.425,.4276,.0022,5.,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.};
// -14--15- -16- -17- -18- -19- -20- -21- -22- -23- -24- -25-
// -26- -27- -28- -29- -30- -31-
if(PDG==2212)
{
// -- 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 == 0 && tgN == 1 )
{
for (G4int ip=0; ip<n_npel; ip++) lastPAR[ip]=np_el[ip]; // pn
}
else if ( tgZ == 1 && tgN == 0 )
{
for (G4int ip=0; ip<n_ppel; ip++) lastPAR[ip]=pp_el[ip]; // pp
}
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]=5./(1.+22./asa); // p1
lastPAR[1]=4.8*std::pow(a,1.14)/(1.+3.6/a3); // p2
lastPAR[2]=1./(1.+4.E-3*a4)+2.E-6*a3/(1.+1.3E-6*a3); // p3
lastPAR[3]=1.3*a; // p4
lastPAR[4]=3.E-8*a3/(1.+4.E-7*a4); // p5
lastPAR[5]=.07*asa/(1.+.009*a2); // p6
lastPAR[6]=(3.+3.E-16*a20)/(1.+a20*(2.E-16/a+3.E-19*a)); // p7 (11)
lastPAR[7]=(5.E-9*a4*sa+.27/a)/(1.+5.E16/a20)/(1.+6.E-9*a4)+.015/a2; // p8
lastPAR[8]=(.001*a+.07/a)/(1.+5.E13/a16+5.E-7*a3)+.0003/sa; // p9 (10)
// @@ 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*std::exp(.32*asa); // p1
lastPAR[39]=20.*std::exp(.45*asa); // p2
lastPAR[40]=7.e3+2.4e6/a5; // p3
lastPAR[41]=2.5e5*std::exp(.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*std::pow(a,1.15); // p1
lastPAR[10]=.06*std::pow(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/std::pow(a-6.83,14)); // p1
lastPAR[29]=2.e6/a6+7.2/std::pow(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*G4ProtonElasticCrossSection::GetPTables: PDG="<<PDG<<", Z="
<<tgZ<<", N="<<tgN<<", i="<<ini<<" > fin="<<fin<<", LP="<<LP<<" > ILP="
<<ILP<<" nothing is done!"<<G4endl;
}
else G4cout<<"*Warning*G4ProtonElasticCrossSection::GetPTables: PDG="<<PDG<<", Z="
<<tgZ<<", N="<<tgN<<", i="<<ini<<">= max="<<nPoints<<", LP="<<LP
<<" > ILP="<<ILP<<", lPMax="<<lPMax<<" nothing is done!"<<G4endl;
}
}
else
{
G4cerr<<"*Error*G4ProtonElasticCrossSection::GetPTables: PDG="<<PDG<<", Z="<<tgZ
<<", N="<<tgN<<", while it is defined only for PDG=2212"<<G4endl;
}
return ILP;
}
// Returns Q2=-t in independent units (MeV^2) (all internal calculations are in GeV)
G4double G4ProtonElasticCrossSection::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.;
if(PDG!=2212) G4cout<<"**Warning*G4ProtonElasticCrossSection::GetExT:PDG="<<PDG<<G4endl;
if(onlyCS) G4cout<<"**Warning*G4ProtonElasticCrossSection::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.-std::exp(-E1));
G4double E2=lastTM*theB2;
G4double R2=(1.-std::exp(-E2*E2*E2));
G4double E3=lastTM*theB3;
G4double R3=(1.-std::exp(-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=-std::log(1.-ran)/theB1;
}
else if(rand<I12)
{
G4double ran=R2*G4UniformRand();
if(ran>1.) ran=1.;
q2=-std::log(1.-ran);
if(q2<0.) q2=0.;
q2=std::pow(q2,third)/theB2;
}
else
{
G4double ran=R3*G4UniformRand();
if(ran>1.) ran=1.;
q2=-std::log(1.-ran)/theB3;
}
}
else
{
G4double a=tgZ+tgN;
G4double E1=lastTM*(theB1+lastTM*theSS);
G4double R1=(1.-std::exp(-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.-std::exp(-E2));
G4double E3=lastTM*theB3;
if(a>6.5)E3*=tm2*tm2*tm2; // power 1 for lowA, 7 (2nd) for HighA
G4double R3=(1.-std::exp(-E3));
G4double E4=lastTM*theB4;
G4double R4=(1.-std::exp(-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=-std::log(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=-std::log(1.-ran)/theB2;
if(q2<0.) q2=0.;
if(a<6.5) q2=std::pow(q2,third);
else q2=std::pow(q2,fifth);
}
else if(rand<I13)
{
G4double ran=R3*G4UniformRand();
if(ran>1.) ran=1.;
q2=-std::log(1.-ran)/theB3;
if(q2<0.) q2=0.;
if(a>6.5) q2=std::pow(q2,sevth);
}
else
{
G4double ran=R4*G4UniformRand();
if(ran>1.) ran=1.;
q2=-std::log(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*G4ElasticCrossSect::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 G4ProtonElasticCrossSection::GetSlope(G4int tgZ, G4int tgN, G4int PDG)
{
static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
if(onlyCS) G4cout<<"*Warning*G4ProtonElasticCrossSection::GetSlope:onlyCS=true"<<G4endl;
if(lastLP<-4.3) return 0.; // S-wave for p<14 MeV/c (kinE<.1MeV)
if(PDG!=2212)
{
G4cerr<<"*Error*G4ProtonElasticCrossSection::GetSlope: PDG="<<PDG<<", Z="<<tgZ<<", N="
<<tgN<<", while it is defined only for PDG=2212"<<G4endl;
}
if(theB1<0.) theB1=0.;
if(!(theB1>=-1.||theB1<=1.))G4cout<<"*NAN*G4ElasticCrossSect::Getslope:"<<theB1<<G4endl;
return theB1/GeVSQ;
}
// Returns half max(Q2=-t) in independent units (MeV^2)
G4double G4ProtonElasticCrossSection::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 G4ProtonElasticCrossSection::GetTabValues(G4double lp, G4int PDG, G4int tgZ,
G4int tgN)
{
if(PDG!=2212) G4cout<<"*Warning*G4ProtonElasticCrossSection::GetTabV:PDG="<<PDG<<G4endl;
if(tgZ<0 || tgZ>92)
{
G4cout<<"*Warning*G4ProtonElCS::GetTabValue: (1-92) No isotopes for 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=std::exp(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 ) // pp/nn
{
G4double p2s=p2*sp;
G4double dl2=lp-lastPAR[8];
theSS=lastPAR[31];
theS1=(lastPAR[9]+lastPAR[10]*dl2*dl2)/(1.+lastPAR[11]/p4/p)+
(lastPAR[12]/p2+lastPAR[13]*p)/(p4+lastPAR[14]*sp);
theB1=lastPAR[15]*std::pow(p,lastPAR[16])/(1.+lastPAR[17]/p3);
theS2=lastPAR[18]+lastPAR[19]/(p4+lastPAR[20]*p);
theB2=lastPAR[21]+lastPAR[22]/(p4+lastPAR[23]/sp);
theS3=lastPAR[24]+lastPAR[25]/(p4*p4+lastPAR[26]*p2+lastPAR[27]);
theB3=lastPAR[28]+lastPAR[29]/(p4+lastPAR[30]);
theS4=0.;
theB4=0.;
// Returns the total elastic pp cross-section (to avoid spoiling lastSIG)
G4double dl1=lp-lastPAR[3];
return lastPAR[0]/p2s/(1.+lastPAR[7]/p2s)+(lastPAR[1]+lastPAR[2]*dl1*dl1+lastPAR[4]/p)
/(1.+lastPAR[5]*lp)/(1.+lastPAR[6]/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=std::pow(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]*std::pow(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]*std::exp(-pah*lastPAR[39])+
lastPAR[40]/(1.+lastPAR[41]*std::pow(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]/std::pow(p,lastPAR[20]))+
lastPAR[17]/(1.+lastPAR[18]/p4);
theSS=lastPAR[21]/(p4/std::pow(p,lastPAR[23])+lastPAR[22]/p4);
theS2=lastPAR[24]/p4/(std::pow(p,lastPAR[25])+lastPAR[26]/p12)+lastPAR[27];
theB2=lastPAR[28]/std::pow(p,lastPAR[29])+lastPAR[30]/std::pow(p,lastPAR[31]);
theS3=lastPAR[32]/std::pow(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)
// p1 p2 p3 p6
return (lastPAR[0]*dl*dl+lastPAR[1])/(1.+lastPAR[2]/p+lastPAR[5]/p6)+
lastPAR[3]/(p3+lastPAR[4]/p3)+lastPAR[7]/(p4+std::pow((lastPAR[8]/p),lastPAR[6]));
// p4 p5 p8 p9 p7
}
return 0.;
} // End of GetTableValues
// Returns max -t=Q2 (GeV^2) for the momentum pP(GeV) and the target nucleus (tgN,tgZ)
G4double G4ProtonElasticCrossSection::GetQ2max(G4int PDG, G4int tgZ, G4int tgN,
G4double pP)
{
static const G4double mProt= G4Proton::Proton()->GetPDGMass()*.001; // MeV to GeV
static const G4double mProt2= mProt*mProt;
G4double pP2=pP*pP; // squared momentum of the projectile
if(tgZ==1 && tgN==0)
{
G4double tMid=std::sqrt(pP2+mProt2)*mProt-mProt2; // CMS 90deg value of -t=Q2 (GeV^2)
return tMid+tMid;
}
else if(tgZ || tgN) // ---> pA
{
// G4double mt=G4QPDGCode(90000000+tgZ*1000+tgN).GetMass()*.001; // Target mass in GeV
G4double mt=G4ParticleTable::GetParticleTable()->FindIon(tgZ,tgZ+tgN,0,tgZ)->GetPDGMass()*.001; // Target mass in GeV
G4double dmt=mt+mt;
G4double s=dmt*std::sqrt(pP2+mProt2)+mProt2+mt*mt;// Mondelstam s
return dmt*dmt*pP2/s;
}
else
{
G4cerr<<"*Error*G4ProtonElasticCrossSection::GetQ2max: PDG="<<PDG<<", Z="<<tgZ<<", N="
<<tgN<<", while it is defined only for p projectiles & Z_target>0"<<G4endl;
return 0;
}
}
source/processes/hadronic/models/quasi_elastic/src/G4QuasiElRatios.cc
+37 -37
View File
@@ -24,8 +24,7 @@
// ********************************************************************
//
//
// $Id: G4QuasiElRatios.cc,v 1.4 2010-09-03 15:19:04 gcosmo Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
// $Id$
//
//
// G4 Physics class: G4QuasiElRatios for N+A elastic cross sections
@@ -39,12 +38,10 @@
// reactions in the inelastic reactions.
// ----------------------------------------------------------------------
//#define debug
//#define pdebug
//#define ppdebug
//#define nandebug
#include "G4QuasiElRatios.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"
#include "G4Proton.hh"
#include "G4Neutron.hh"
#include "G4Deuteron.hh"
@@ -52,6 +49,8 @@
#include "G4He3.hh"
#include "G4Alpha.hh"
#include "G4ThreeVector.hh"
#include "G4CrossSectionDataSetRegistry.hh"
// initialisation of statics
std::vector<G4double*> G4QuasiElRatios::vT; // Vector of pointers to LinTable in C++ heap
@@ -60,6 +59,10 @@ std::vector<std::pair<G4double,G4double>*> G4QuasiElRatios::vX; // ETPointers to
G4QuasiElRatios::G4QuasiElRatios()
{
PCSmanager=(G4ChipsProtonElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsProtonElasticXS::Default_Name());
NCSmanager=(G4ChipsNeutronElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsNeutronElasticXS::Default_Name());
}
G4QuasiElRatios::~G4QuasiElRatios()
@@ -105,7 +108,7 @@ std::pair<G4double,G4double> G4QuasiElRatios::GetRatios(G4double pIU, G4int pPDG
}
// Calculatio QasiFree/Inelastic Ratio as a function of total hN cross-section (mb) and A
G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double m_s, G4int A)
{
static const G4int nps=150; // Number of steps in the R(s) LinTable
static const G4int mps=nps+1; // Number of elements in the R(s) LinTable
@@ -116,7 +119,7 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
static const G4double lsi=5.; // The min ln(s) logTabEl(s=148.4 < sma=150.)
static const G4double lsa=9.; // The max ln(s) logTabEl(s=148.4 - 8103. mb)
static const G4double mi=std::exp(lsi);// The min s of logTabEl(~ 148.4 mb)
static const G4double ms=std::exp(lsa);// The max s of logTabEl(~ 8103. mb)
static const G4double min_s=std::exp(lsa);// The max s of logTabEl(~ 8103. mb)
static const G4double dl=(lsa-lsi)/nls;// Step of the logarithmic Table
static const G4double edl=std::exp(dl);// Multiplication step of the logarithmic Table
static const G4double toler=.01; // The tolarence mb defining the same cross-section
@@ -137,19 +140,18 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
static G4double* lastT=0; // theLast of pointer to LinTable in the C++ heap
static G4double* lastL=0; // theLast of pointer to LogTable in the C++ heap
// LogTable is created only if necessary. The ratio R(s>8100 mb) = 0 for any nuclei
if(s<toler || A<2) return 1.;
if(s>ms) return 0.;
if(m_s<toler || A<2) return 1.;
if(m_s>min_s) return 0.;
if(A>238)
{
G4cout<<"-Warning-G4QuasiElRatio::GetQF2IN_Ratio:A="<<A<<">238, return zero"<<G4endl;
return 0.;
}
G4int nDB=vA.size(); // A number of nuclei already initialized in AMDB
// if(nDB && lastA==A && std::fabs(s-lastS)<toler) return lastR;
if(nDB && lastA==A && s==lastS) return lastR; // VI do not use tolerance
if(nDB && lastA==A && m_s==lastS) return lastR; // VI do not use tolerance
G4bool found=false;
G4int i=-1;
if(nDB) for (i=0; i<nDB; i++) if(A==vA[i]) // Sirch for this A in AMDB
if(nDB) for (i=0; i<nDB; i++) if(A==vA[i]) // Search for this A in AMDB
{
found=true; // The A value is found
break;
@@ -158,7 +160,7 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
{
lastA = A;
lastT = new G4double[mps]; // Create the linear Table
lastN = static_cast<int>(s/ds)+1; // MaxBin to be initialized
lastN = static_cast<int>(m_s/ds)+1; // MaxBin to be initialized
if(lastN>nps)
{
lastN=nps;
@@ -173,9 +175,9 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
lastT[j]=CalcQF2IN_Ratio(sv,A);
}
lastL=new G4double[mls]; // Create the logarithmic Table
if(s>sma) // Initialize the logarithmic Table
if(m_s>sma) // Initialize the logarithmic Table
{
G4double ls=std::log(s);
G4double ls=std::log(m_s);
lastK = static_cast<int>((ls-lsi)/dl)+1; // MaxBin to be initialized in LogTaB
if(lastK>nls)
{
@@ -213,19 +215,21 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
lastK=vK[i];
lastT=vT[i];
lastL=vL[i];
if(s>lastM) // At least LinTab must be updated
if(m_s>lastH) // At least LinTab must be updated
{
G4int nextN=lastN+1; // The next bin to be initialized
if(lastN<nps)
{
lastN = static_cast<int>(s/ds)+1;// MaxBin to be initialized
G4double sv=lastH; // bug fix by WP
lastN = static_cast<int>(m_s/ds)+1;// MaxBin to be initialized
if(lastN>nps)
{
lastN=nps;
lastH=sma;
}
else lastH = lastN*ds; // Calculate max initialized s for LinTab
G4double sv=lastM;
for(G4int j=nextN; j<=lastN; j++)// Calculate LogTab values
{
sv+=ds;
@@ -239,10 +243,10 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
}
G4int nextK=lastK+1;
if(!lastK) nextK=0;
if(s>sma && lastK<nls) // LogTab must be updated
if(m_s>sma && lastK<nls) // LogTab must be updated
{
G4double sv=std::exp(lastM+lsi); // Define starting poit (lastM will be changed)
G4double ls=std::log(s);
G4double ls=std::log(m_s);
lastK = static_cast<int>((ls-lsi)/dl)+1; // MaxBin to be initialized in LogTaB
if(lastK>nls)
{
@@ -264,16 +268,16 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
}
}
// Now one can use tabeles to calculate the value
if(s<sma) // Use linear table
if(m_s<sma) // Use linear table
{
G4int n=static_cast<int>(s/ds); // Low edge number of the bin
G4double d=s-n*ds; // Linear shift
G4int n=static_cast<int>(m_s/ds); // Low edge number of the bin
G4double d=m_s-n*ds; // Linear shift
G4double v=lastT[n]; // Base
lastR=v+d*(lastT[n+1]-v)/ds; // Result
}
else // Use log table
{
G4double ls=std::log(s)-lsi; // ln(s)-l_min
G4double ls=std::log(m_s)-lsi; // ln(s)-l_min
G4int n=static_cast<int>(ls/dl); // Low edge number of the bin
G4double d=ls-n*dl; // Log shift
G4double v=lastL[n]; // Base
@@ -285,14 +289,14 @@ G4double G4QuasiElRatios::GetQF2IN_Ratio(G4double s, G4int A)
} // End of CalcQF2IN_Ratio
// Calculatio QasiFree/Inelastic Ratio as a function of total hN cross-section and A
G4double G4QuasiElRatios::CalcQF2IN_Ratio(G4double s, G4int A)
G4double G4QuasiElRatios::CalcQF2IN_Ratio(G4double m_s, G4int A)
{
static const G4double C=1.246;
G4double s2=s*s;
G4double s2=m_s*m_s;
G4double s4=s2*s2;
G4double ss=std::sqrt(std::sqrt(s));
G4double ss=std::sqrt(std::sqrt(m_s));
G4double P=7.48e-5*s2/(1.+8.77e12/s4/s4/s2);
G4double E=.2644+.016/(1.+std::exp((29.54-s)/2.49));
G4double E=.2644+.016/(1.+std::exp((29.54-m_s)/2.49));
G4double F=ss*.1526*std::exp(-s2*ss*.0000859);
return C*std::exp(-E*std::pow(G4double(A-1.),F))/std::pow(G4double(A),P);
} // End of CalcQF2IN_Ratio
@@ -833,8 +837,6 @@ std::pair<G4LorentzVector,G4LorentzVector> G4QuasiElRatios::Scatter(G4int NPDG,
return std::make_pair(G4LorentzVector(0.,0.,0.,0.),p4M); // Do Nothing Action
}
G4double P=std::sqrt(E2-mP2); // Momentum in pseudo laboratory system
G4VCrossSection* PCSmanager=G4ProtonElasticCrossSection::GetPointer();
G4VCrossSection* NCSmanager=G4NeutronElasticCrossSection::GetPointer();
// @@ Temporary NN t-dependence for all hadrons
if(pPDG>3400 || pPDG<-3400) G4cout<<"-Warning-G4QE::Scatter: pPDG="<<pPDG<<G4endl;
G4int PDG=2212; // *TMP* instead of pPDG
@@ -847,8 +849,8 @@ std::pair<G4LorentzVector,G4LorentzVector> G4QuasiElRatios::Scatter(G4int NPDG,
else if(PDG==2112) PDG=2212;
}
G4double xSec=0.; // Prototype of Recalculated Cross Section *TMP*
if(PDG==2212) xSec=PCSmanager->GetCrossSection(false, P, Z, N, PDG); // P CrossSect *TMP*
else xSec=NCSmanager->GetCrossSection(false, P, Z, N, PDG); // N CrossSect *TMP*
if(PDG==2212) xSec=PCSmanager->GetChipsCrossSection(P, Z, N, PDG); // P CrossSect *TMP*
else xSec=NCSmanager->GetChipsCrossSection(P, Z, N, PDG); // N CrossSect *TMP*
// @@ check a possibility to separate p, n, or alpha (!)
if(xSec <= 0.) // The cross-section iz 0 -> Do Nothing
{
@@ -952,8 +954,6 @@ std::pair<G4LorentzVector,G4LorentzVector> G4QuasiElRatios::ChExer(G4int NPDG,
return std::make_pair(G4LorentzVector(0.,0.,0.,0.),p4M); // Do Nothing Action
}
G4double P=std::sqrt(E2-mS2); // Momentum in pseudo laboratory system
G4VCrossSection* PCSmanager=G4ProtonElasticCrossSection::GetPointer();
G4VCrossSection* NCSmanager=G4NeutronElasticCrossSection::GetPointer();
// @@ Temporary NN t-dependence for all hadrons
G4int PDG=2212; // *TMP* instead of pPDG
if(pPDG==2112||pPDG==-211||pPDG==-321) PDG=2112; // *TMP* instead of pPDG
@@ -965,8 +965,8 @@ std::pair<G4LorentzVector,G4LorentzVector> G4QuasiElRatios::ChExer(G4int NPDG,
else if(PDG==2112) PDG=2212;
}
G4double xSec=0.; // Prototype of Recalculated Cross Section *TMP*
if(PDG==2212) xSec=PCSmanager->GetCrossSection(false, P, Z, N, PDG); // P CrossSect *TMP*
else xSec=NCSmanager->GetCrossSection(false, P, Z, N, PDG); // N CrossSect *TMP*
if(PDG==2212) xSec=PCSmanager->GetChipsCrossSection(P, Z, N, PDG); // P CrossSect *TMP*
else xSec=NCSmanager->GetChipsCrossSection(P, Z, N, PDG); // N CrossSect *TMP*
// @@ check a possibility to separate p, n, or alpha (!)
if(xSec <= 0.) // The cross-section iz 0 -> Do Nothing
{
source/processes/hadronic/models/quasi_elastic/src/G4VCrossSection.cc
-111
View File
@@ -1,111 +0,0 @@
//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
// $Id: G4VCrossSection.cc,v 1.1 2009-11-16 18:15:43 mkossov Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
//
// CHIPS virtual class: G4VCrossSection for the collision cross sections
// Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-04
// The last update: M.V. Kossov, CERN/ITEP (Moscow) 27-Nov-04
//
// This class has been extracted from the CHIPS model.
// All the dependencies on CHIPS classes have been removed.
//
// Short description: a basic class for all CHIPS reaction cross-sections.
// -----------------------------------------------------------------------
//#define debug
#define edebug
//#define pdebug
//#define ppdebug
//#define tdebug
//#define sdebug
#include "G4VCrossSection.hh"
// Initialization of the
G4double G4VCrossSection::tolerance=.001; // The relative tolarence for the same CrSec
// Gives the threshold energy for different isotopes (can be improved in the derived class)
G4double G4VCrossSection::ThresholdEnergy(G4int , G4int, G4int) {return 0.;} // Fake use
G4double G4VCrossSection::GetDirectPart(G4double) {return 0.;} // Direct interaction
G4double G4VCrossSection::GetNPartons(G4double) {return 3.;} // Direct interaction
G4double G4VCrossSection::GetLastTOTCS() {return 0.;} // Get the last total CS
G4double G4VCrossSection::GetLastQELCS() {return 0.;} // Get the last quasi-elast CS
G4double G4VCrossSection::GetExchangeEnergy() {return 0.;}
G4double G4VCrossSection::GetExchangeQ2(G4double) {return 0.;}
G4double G4VCrossSection::GetSlope(G4int,G4int,G4int) {return 0.;}
G4double G4VCrossSection::GetExchangeT(G4int,G4int,G4int) {return 0.;}
G4double G4VCrossSection::GetHMaxT() {return 0.;}
G4double G4VCrossSection::GetQEL_ExchangeQ2() {return 0.;}
G4double G4VCrossSection::GetNQE_ExchangeQ2() {return 0.;}
G4int G4VCrossSection::GetExchangePDGCode() {return 0;}
G4double G4VCrossSection::GetVirtualFactor(G4double nu, G4double Q2) {return 0.*nu*Q2;}
// This function finds the linear approximation Y-point for the XN(N), YN(N) table
G4double G4VCrossSection::LinearFit(G4double X, G4int N, G4double* XN, G4double* YN)
{
G4double Xj=XN[0];
G4double Xh=XN[N-1];
if(X<=Xj) return YN[0];
else if(X>=Xh) return YN[N-1];
G4double Xp=0.; G4int j=0; while (X>Xj && j<N) {j++; Xp=Xj; Xj=XN[j];}
return YN[j]-(Xj-X)*(YN[j]-YN[j-1])/(Xj-Xp);
}
// This function finds the linear approximation Y-point for equidistant bins: XI=X0+I*DX
G4double G4VCrossSection::EquLinearFit(G4double X, G4int N, G4double X0, G4double DX,
G4double* Y)
{
if(DX<=0. || N<2)
{
G4cerr<<"***G4VCrossSection::EquLinearFit: DX="<<DX<<", N="<<N<<G4endl;
return Y[0];
}
G4int N2=N-2;
G4double d=(X-X0)/DX;
G4int j=static_cast<int>(d);
if (j<0) j=0;
else if(j>N2) j=N2;
d-=j; // excess
G4double yi=Y[j];
G4double sigma=yi+(Y[j+1]-yi)*d;
return sigma;
}