G4QPionMinusElasticCrossSection.cc

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00030 // G4 Physics class: G4QPionMinusElasticCrossSection for pA elastic cross sections
00031 // Created: M.V. Kossov, CERN/ITEP(Moscow), 21-Jan-10
00032 // The last update: M.V. Kossov, CERN/ITEP (Moscow) 21-Jan-10
00033 // 
00034 // -------------------------------------------------------------------------------
00035 // Short description: Interaction cross-sections for the G4QElastic process
00036 // -------------------------------------------------------------------------------
00037 
00038 //#define debug
00039 //#define isodebug
00040 //#define pdebug
00041 //#define ppdebug
00042 //#define tdebug
00043 //#define sdebug
00044 
00045 #include "G4QPionMinusElasticCrossSection.hh"
00046 #include "G4SystemOfUnits.hh"
00047 
00048 // Initialization of the static parameters
00049 const G4int G4QPionMinusElasticCrossSection::nPoints=128;//#ofPt in AMDB table(>anyPar)(D)
00050 const G4int G4QPionMinusElasticCrossSection::nLast=nPoints-1;//theLastElement inTheTable(D)
00051 G4double  G4QPionMinusElasticCrossSection::lPMin=-8.;  //Min tabulated logarithmMomentum(D)
00052 G4double  G4QPionMinusElasticCrossSection::lPMax= 8.;  //Max tabulated logarithmMomentum(D)
00053 G4double  G4QPionMinusElasticCrossSection::dlnP=(lPMax-lPMin)/nLast;//LogStep inTheTable(D)
00054 G4bool    G4QPionMinusElasticCrossSection::onlyCS=true;//Flag toCalcul OnlyCS(not Si/Bi)(L)
00055 G4double  G4QPionMinusElasticCrossSection::lastSIG=0.; //Last calculated cross section  (L)
00056 G4double  G4QPionMinusElasticCrossSection::lastLP=-10.;//Last log(mom_of IncidentHadron)(L)
00057 G4double  G4QPionMinusElasticCrossSection::lastTM=0.;  //Last t_maximum                 (L)
00058 G4double  G4QPionMinusElasticCrossSection::theSS=0.;   //TheLastSqSlope of 1st difr.Max(L)
00059 G4double  G4QPionMinusElasticCrossSection::theS1=0.;   //TheLastMantissa of 1st difr.Max(L)
00060 G4double  G4QPionMinusElasticCrossSection::theB1=0.;   //TheLastSlope of 1st difruct.Max(L)
00061 G4double  G4QPionMinusElasticCrossSection::theS2=0.;   //TheLastMantissa of 2nd difr.Max(L)
00062 G4double  G4QPionMinusElasticCrossSection::theB2=0.;   //TheLastSlope of 2nd difruct.Max(L)
00063 G4double  G4QPionMinusElasticCrossSection::theS3=0.;   //TheLastMantissa of 3d difr. Max(L)
00064 G4double  G4QPionMinusElasticCrossSection::theB3=0.;   //TheLastSlope of 3d difruct. Max(L)
00065 G4double  G4QPionMinusElasticCrossSection::theS4=0.;   //TheLastMantissa of 4th difr.Max(L)
00066 G4double  G4QPionMinusElasticCrossSection::theB4=0.;   //TheLastSlope of 4th difruct.Max(L)
00067 G4int     G4QPionMinusElasticCrossSection::lastTZ=0;   // Last atomic number of the target
00068 G4int     G4QPionMinusElasticCrossSection::lastTN=0;   // Last # of neutrons in the target
00069 G4double  G4QPionMinusElasticCrossSection::lastPIN=0.; // Last initialized max momentum
00070 G4double* G4QPionMinusElasticCrossSection::lastCST=0;  // Elastic cross-section table
00071 G4double* G4QPionMinusElasticCrossSection::lastPAR=0;  // Parameters ForFunctionCalculation
00072 G4double* G4QPionMinusElasticCrossSection::lastSST=0;  // E-dep of SqardSlope of 1st difMax
00073 G4double* G4QPionMinusElasticCrossSection::lastS1T=0;  // E-dep of mantissa of 1st dif.Max
00074 G4double* G4QPionMinusElasticCrossSection::lastB1T=0;  // E-dep of the slope of 1st difMax
00075 G4double* G4QPionMinusElasticCrossSection::lastS2T=0;  // E-dep of mantissa of 2nd difrMax
00076 G4double* G4QPionMinusElasticCrossSection::lastB2T=0;  // E-dep of the slope of 2nd difMax
00077 G4double* G4QPionMinusElasticCrossSection::lastS3T=0;  // E-dep of mantissa of 3d difr.Max
00078 G4double* G4QPionMinusElasticCrossSection::lastB3T=0;  // E-dep of the slope of 3d difrMax
00079 G4double* G4QPionMinusElasticCrossSection::lastS4T=0;  // E-dep of mantissa of 4th difrMax
00080 G4double* G4QPionMinusElasticCrossSection::lastB4T=0;  // E-dep of the slope of 4th difMax
00081 G4int     G4QPionMinusElasticCrossSection::lastN=0;    // The last N of calculated nucleus
00082 G4int     G4QPionMinusElasticCrossSection::lastZ=0;    // The last Z of calculated nucleus
00083 G4double  G4QPionMinusElasticCrossSection::lastP=0.;   // LastUsed in CrossSection Momentum
00084 G4double  G4QPionMinusElasticCrossSection::lastTH=0.;  // Last threshold momentum
00085 G4double  G4QPionMinusElasticCrossSection::lastCS=0.;  // Last value of the Cross Section
00086 G4int     G4QPionMinusElasticCrossSection::lastI=0;    // The last position in the DAMDB
00087 
00088 std::vector<G4double*> G4QPionMinusElasticCrossSection::PAR;// Vector of ParsForFunctCalcul
00089 std::vector<G4double*> G4QPionMinusElasticCrossSection::CST;// Vector of CrossSection table
00090 std::vector<G4double*> G4QPionMinusElasticCrossSection::SST;// Vector of the1st SquardSlope
00091 std::vector<G4double*> G4QPionMinusElasticCrossSection::S1T;// Vector of the1st mantissa
00092 std::vector<G4double*> G4QPionMinusElasticCrossSection::B1T;// Vector of the1st slope
00093 std::vector<G4double*> G4QPionMinusElasticCrossSection::S2T;// Vector of the2nd mantissa
00094 std::vector<G4double*> G4QPionMinusElasticCrossSection::B2T;// Vector of the2nd slope
00095 std::vector<G4double*> G4QPionMinusElasticCrossSection::S3T;// Vector of the3d mantissa
00096 std::vector<G4double*> G4QPionMinusElasticCrossSection::B3T;// Vector of the3d slope
00097 std::vector<G4double*> G4QPionMinusElasticCrossSection::S4T;// Vector of the4th mantissa(g)
00098 std::vector<G4double*> G4QPionMinusElasticCrossSection::B4T;// Vector of the4th slope(glor)
00099 
00100 G4QPionMinusElasticCrossSection::G4QPionMinusElasticCrossSection()
00101 {
00102 }
00103 
00104 G4QPionMinusElasticCrossSection::~G4QPionMinusElasticCrossSection()
00105 {
00106   std::vector<G4double*>::iterator pos;
00107   for (pos=CST.begin(); pos<CST.end(); pos++)
00108   { delete [] *pos; }
00109   CST.clear();
00110   for (pos=PAR.begin(); pos<PAR.end(); pos++)
00111   { delete [] *pos; }
00112   PAR.clear();
00113   for (pos=SST.begin(); pos<SST.end(); pos++)
00114   { delete [] *pos; }
00115   SST.clear();
00116   for (pos=S1T.begin(); pos<S1T.end(); pos++)
00117   { delete [] *pos; }
00118   S1T.clear();
00119   for (pos=B1T.begin(); pos<B1T.end(); pos++)
00120   { delete [] *pos; }
00121   B1T.clear();
00122   for (pos=S2T.begin(); pos<S2T.end(); pos++)
00123   { delete [] *pos; }
00124   S2T.clear();
00125   for (pos=B2T.begin(); pos<B2T.end(); pos++)
00126   { delete [] *pos; }
00127   B2T.clear();
00128   for (pos=S3T.begin(); pos<S3T.end(); pos++)
00129   { delete [] *pos; }
00130   S3T.clear();
00131   for (pos=B3T.begin(); pos<B3T.end(); pos++)
00132   { delete [] *pos; }
00133   B3T.clear();
00134   for (pos=S4T.begin(); pos<S4T.end(); pos++)
00135   { delete [] *pos; }
00136   S4T.clear();
00137   for (pos=B4T.begin(); pos<B4T.end(); pos++)
00138   { delete [] *pos; }
00139   B4T.clear();
00140 }
00141 
00142 // Returns Pointer to the G4VQCrossSection class
00143 G4VQCrossSection* G4QPionMinusElasticCrossSection::GetPointer()
00144 {
00145   static G4QPionMinusElasticCrossSection theCrossSection;//StaticBody of theQElCrossSection
00146   return &theCrossSection;
00147 }
00148 
00149 // The main member function giving the collision cross section (P is in IU, CS is in mb)
00150 // Make pMom in independent units ! (Now it is MeV)
00151 G4double G4QPionMinusElasticCrossSection::GetCrossSection(G4bool fCS, G4double pMom,
00152                                                          G4int tgZ, G4int tgN, G4int pPDG)
00153 {
00154   static std::vector <G4int>    colN;  // Vector of N for calculated nuclei (isotops)
00155   static std::vector <G4int>    colZ;  // Vector of Z for calculated nuclei (isotops)
00156   static std::vector <G4double> colP;  // Vector of last momenta for the reaction
00157   static std::vector <G4double> colTH; // Vector of energy thresholds for the reaction
00158   static std::vector <G4double> colCS; // Vector of last cross sections for the reaction
00159   // ***---*** End of the mandatory Static Definitions of the Associative Memory ***---***
00160   G4double pEn=pMom;
00161   onlyCS=fCS;
00162 #ifdef pdebug
00163   G4cout<<"G4QPElCS::GetCS:>>> f="<<fCS<<", p="<<pMom<<", Z="<<tgZ<<"("<<lastZ<<") ,N="
00164         <<tgN<<"("<<lastN<<"), T="<<pEn<<"("<<lastTH<<")"<<",Sz="<<colN.size()<<G4endl;
00165   //CalculateCrossSection(fCS,-27,j,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00166 #endif
00167   if(pPDG!=-211)
00168   {
00169     G4cout<<"*Warning*G4QPionPlusElCS::GetCS:**> Found pPDG="<<pPDG<<" =--=> CS=0"<<G4endl;
00170     //CalculateCrossSection(fCS,-27,j,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00171     return 0.;                         // projectile PDG=0 is a mistake (?!) @@
00172   }
00173   G4bool in=false;                   // By default the isotope must be found in the AMDB
00174   lastP   = 0.;                      // New momentum history (nothing to compare with)
00175   lastN   = tgN;                     // The last N of the calculated nucleus
00176   lastZ   = tgZ;                     // The last Z of the calculated nucleus
00177   lastI   = colN.size();             // Size of the Associative Memory DB in the heap
00178   if(lastI) for(G4int i=0; i<lastI; i++) // Loop over proj/tgZ/tgN lines of DB
00179   {                                  // The nucleus with projPDG is found in AMDB
00180     if(colN[i]==tgN && colZ[i]==tgZ) // Isotope is foind in AMDB
00181     {
00182       lastI=i;
00183       lastTH =colTH[i];              // Last THreshold (A-dependent)
00184 #ifdef pdebug
00185       G4cout<<"G4QElCS::GetCS:*Found* P="<<pMom<<",Threshold="<<lastTH<<",i="<<i<<G4endl;
00186       //CalculateCrossSection(fCS,-27,i,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00187 #endif
00188       if(pEn<=lastTH)
00189       {
00190 #ifdef pdebug
00191         G4cout<<"G4QElCS::GetCS:Found T="<<pEn<<" < Threshold="<<lastTH<<",CS=0"<<G4endl;
00192         //CalculateCrossSection(fCS,-27,i,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00193 #endif
00194         return 0.;                   // Energy is below the Threshold value
00195       }
00196       lastP  =colP [i];              // Last Momentum  (A-dependent)
00197       lastCS =colCS[i];              // Last CrossSect (A-dependent)
00198       //  if(std::fabs(lastP/pMom-1.)<tolerance) //VI (do not use tolerance)
00199       if(lastP == pMom)              // Do not recalculate
00200       {
00201 #ifdef pdebug
00202         G4cout<<"G4QElCS::GetCS:P="<<pMom<<",CS="<<lastCS*millibarn<<G4endl;
00203 #endif
00204         CalculateCrossSection(fCS,-1,i,pPDG,lastZ,lastN,pMom); // Update param's only
00205         return lastCS*millibarn;     // Use theLastCS
00206       }
00207       in = true;                       // This is the case when the isotop is found in DB
00208       // Momentum pMom is in IU ! @@ Units
00209 #ifdef pdebug
00210       G4cout<<"G4QElCS::G:UpdateDB P="<<pMom<<",f="<<fCS<<",I="<<lastI<<",i="<<i<<G4endl;
00211 #endif
00212       lastCS=CalculateCrossSection(fCS,-1,i,pPDG,lastZ,lastN,pMom); // read & update
00213 #ifdef pdebug
00214       G4cout<<"G4QElCS::GetCrosSec: *****> New (inDB) Calculated CS="<<lastCS<<G4endl;
00215       //CalculateCrossSection(fCS,-27,i,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00216 #endif
00217       if(lastCS<=0. && pEn>lastTH)    // Correct the threshold
00218       {
00219 #ifdef pdebug
00220         G4cout<<"G4QElCS::GetCS: New T="<<pEn<<"(CS=0) > Threshold="<<lastTH<<G4endl;
00221 #endif
00222         lastTH=pEn;
00223       }
00224       break;                           // Go out of the LOOP with found lastI
00225     }
00226 #ifdef pdebug
00227     G4cout<<"---G4QElCrossSec::GetCrosSec:pPDG="<<pPDG<<",i="<<i<<",N="<<colN[i]
00228           <<",Z["<<i<<"]="<<colZ[i]<<G4endl;
00229     //CalculateCrossSection(fCS,-27,i,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00230 #endif
00231   } // End of attampt to find the nucleus in DB
00232   if(!in)                            // This nucleus has not been calculated previously
00233   {
00234 #ifdef pdebug
00235     G4cout<<"G4QElCS::GetCrosSec:CalcNew P="<<pMom<<",f="<<fCS<<",lastI="<<lastI<<G4endl;
00236 #endif
00238     lastCS=CalculateCrossSection(fCS,0,lastI,pPDG,lastZ,lastN,pMom);//calculate&create
00239     if(lastCS<=0.)
00240     {
00241       lastTH = ThresholdEnergy(tgZ, tgN); // The Threshold Energy which is now the last
00242 #ifdef pdebug
00243       G4cout<<"G4QElCrossSection::GetCrossSect: NewThresh="<<lastTH<<",T="<<pEn<<G4endl;
00244 #endif
00245       if(pEn>lastTH)
00246       {
00247 #ifdef pdebug
00248         G4cout<<"G4QElCS::GetCS: First T="<<pEn<<"(CS=0) > Threshold="<<lastTH<<G4endl;
00249 #endif
00250         lastTH=pEn;
00251       }
00252     }
00253 #ifdef pdebug
00254     G4cout<<"G4QElCS::GetCrosSec: New CS="<<lastCS<<",lZ="<<lastN<<",lN="<<lastZ<<G4endl;
00255     //CalculateCrossSection(fCS,-27,lastI,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00256 #endif
00257     colN.push_back(tgN);
00258     colZ.push_back(tgZ);
00259     colP.push_back(pMom);
00260     colTH.push_back(lastTH);
00261     colCS.push_back(lastCS);
00262 #ifdef pdebug
00263     G4cout<<"G4QElCS::GetCS:1st,P="<<pMom<<"(MeV),CS="<<lastCS*millibarn<<"(mb)"<<G4endl;
00264     //CalculateCrossSection(fCS,-27,lastI,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00265 #endif
00266     return lastCS*millibarn;
00267   } // End of creation of the new set of parameters
00268   else
00269   {
00270 #ifdef pdebug
00271     G4cout<<"G4QElCS::GetCS: Update lastI="<<lastI<<G4endl;
00272 #endif
00273     colP[lastI]=pMom;
00274     colCS[lastI]=lastCS;
00275   }
00276 #ifdef pdebug
00277   G4cout<<"G4QElCS::GetCrSec:End,P="<<pMom<<"(MeV),CS="<<lastCS*millibarn<<"(mb)"<<G4endl;
00278   //CalculateCrossSection(fCS,-27,lastI,pPDG,lastZ,lastN,pMom); // DUMMY TEST
00279   G4cout<<"G4QElCS::GetCrSec:***End***, onlyCS="<<onlyCS<<G4endl;
00280 #endif
00281   return lastCS*millibarn;
00282 }
00283 
00284 // Calculation of total elastic cross section (p in IU, CS in mb) @@ Units (?)
00285 // F=0 - create AMDB, F=-1 - read&update AMDB, F=1 - update AMDB (sinchro with higher AMDB)
00286 G4double G4QPionMinusElasticCrossSection::CalculateCrossSection(G4bool CS, G4int F,G4int I,
00287                                              G4int PDG, G4int tgZ, G4int tgN, G4double pIU)
00288 {
00289   // *** Begin of Associative Memory DB for acceleration of the cross section calculations
00290   static std::vector <G4double>  PIN;   // Vector of max initialized log(P) in the table
00291   // *** End of Static Definitions (Associative Memory Data Base) ***
00292   G4double pMom=pIU/GeV;                // All calculations are in GeV
00293   onlyCS=CS;                            // Flag to calculate only CS (not Si/Bi)
00294 #ifdef pdebug
00295   G4cout<<"G4QPionPlusElasticCroS::CalcCS:->onlyCS="<<onlyCS<<",F="<<F<<",p="<<pIU<<G4endl;
00296 #endif
00297   lastLP=std::log(pMom);                // Make a logarithm of the momentum for calculation
00298   if(F)                                 // This isotope was found in AMDB =>RETRIEVE/UPDATE
00299   {
00300     if(F<0)                             // the AMDB must be loded
00301     {
00302       lastPIN = PIN[I];                 // Max log(P) initialised for this table set
00303       lastPAR = PAR[I];                 // Pointer to the parameter set
00304       lastCST = CST[I];                 // Pointer to the total sross-section table
00305       lastSST = SST[I];                 // Pointer to the first squared slope
00306       lastS1T = S1T[I];                 // Pointer to the first mantissa
00307       lastB1T = B1T[I];                 // Pointer to the first slope
00308       lastS2T = S2T[I];                 // Pointer to the second mantissa
00309       lastB2T = B2T[I];                 // Pointer to the second slope
00310       lastS3T = S3T[I];                 // Pointer to the third mantissa
00311       lastB3T = B3T[I];                 // Pointer to the rhird slope
00312       lastS4T = S4T[I];                 // Pointer to the 4-th mantissa
00313       lastB4T = B4T[I];                 // Pointer to the 4-th slope
00314 #ifdef pdebug
00315       G4cout<<"G4QElasticCS::CalcCS: DB is updated for I="<<I<<",*,PIN4="<<PIN[4]<<G4endl;
00316 #endif
00317     }
00318 #ifdef pdebug
00319     G4cout<<"G4QPionPlusElasticCroS::CalcCS:*read*, LP="<<lastLP<<",PIN="<<lastPIN<<G4endl;
00320 #endif
00321     if(lastLP>lastPIN && lastLP<lPMax)
00322     {
00323       lastPIN=GetPTables(lastLP,lastPIN,PDG,tgZ,tgN);// Can update upper logP-Limit in tabs
00324 #ifdef pdebug
00325       G4cout<<"G4QElCS::CalcCS:*updated(I)*,LP="<<lastLP<<"<IN["<<I<<"]="<<lastPIN<<G4endl;
00326 #endif
00327       PIN[I]=lastPIN;                   // Remember the new P-Limit of the tables
00328     }
00329   }
00330   else                                  // This isotope wasn't initialized => CREATE
00331   {
00332     lastPAR = new G4double[nPoints];    // Allocate memory for parameters of CS function
00333     lastPAR[nLast]=0;                   // Initialization for VALGRIND
00334     lastCST = new G4double[nPoints];    // Allocate memory for Tabulated CS function    
00335     lastSST = new G4double[nPoints];    // Allocate memory for Tabulated first sqaredSlope 
00336     lastS1T = new G4double[nPoints];    // Allocate memory for Tabulated first mantissa 
00337     lastB1T = new G4double[nPoints];    // Allocate memory for Tabulated first slope    
00338     lastS2T = new G4double[nPoints];    // Allocate memory for Tabulated second mantissa
00339     lastB2T = new G4double[nPoints];    // Allocate memory for Tabulated second slope   
00340     lastS3T = new G4double[nPoints];    // Allocate memory for Tabulated third mantissa 
00341     lastB3T = new G4double[nPoints];    // Allocate memory for Tabulated third slope    
00342     lastS4T = new G4double[nPoints];    // Allocate memory for Tabulated 4-th mantissa 
00343     lastB4T = new G4double[nPoints];    // Allocate memory for Tabulated 4-th slope    
00344 #ifdef pdebug
00345     G4cout<<"G4QPionPlusElasticCroS::CalcCS:*ini*,lastLP="<<lastLP<<",min="<<lPMin<<G4endl;
00346 #endif
00347     lastPIN = GetPTables(lastLP,lPMin,PDG,tgZ,tgN); // Returns the new P-limit for tables
00348 #ifdef pdebug
00349     G4cout<<"G4QPiPlElCS::CCS:i,Z="<<tgZ<<",N="<<tgN<<",PDG="<<PDG<<",LP"<<lastPIN<<G4endl;
00350 #endif
00351     PIN.push_back(lastPIN);             // Fill parameters of CS function to AMDB
00352     PAR.push_back(lastPAR);             // Fill parameters of CS function to AMDB
00353     CST.push_back(lastCST);             // Fill Tabulated CS function to AMDB    
00354     SST.push_back(lastSST);             // Fill Tabulated first sq.slope to AMDB 
00355     S1T.push_back(lastS1T);             // Fill Tabulated first mantissa to AMDB 
00356     B1T.push_back(lastB1T);             // Fill Tabulated first slope to AMDB    
00357     S2T.push_back(lastS2T);             // Fill Tabulated second mantissa to AMDB 
00358     B2T.push_back(lastB2T);             // Fill Tabulated second slope to AMDB    
00359     S3T.push_back(lastS3T);             // Fill Tabulated third mantissa to AMDB 
00360     B3T.push_back(lastB3T);             // Fill Tabulated third slope to AMDB    
00361     S4T.push_back(lastS4T);             // Fill Tabulated 4-th mantissa to AMDB 
00362     B4T.push_back(lastB4T);             // Fill Tabulated 4-th slope to AMDB    
00363   } // End of creation/update of the new set of parameters and tables
00364   // =----------= NOW Update (if necessary) and Calculate the Cross Section =-----------=
00365 #ifdef pdebug
00366   G4cout<<"G4QElCS::CalcCS:?update?,LP="<<lastLP<<",IN="<<lastPIN<<",ML="<<lPMax<<G4endl;
00367 #endif
00368   if(lastLP>lastPIN && lastLP<lPMax)
00369   {
00370     lastPIN = GetPTables(lastLP,lastPIN,PDG,tgZ,tgN);
00371 #ifdef pdebug
00372     G4cout<<"G4QElCS::CalcCS: *updated(O)*, LP="<<lastLP<<" < IN="<<lastPIN<<G4endl;
00373 #endif
00374   }
00375 #ifdef pdebug
00376   G4cout<<"G4QElastCS::CalcCS: lastLP="<<lastLP<<",lPM="<<lPMin<<",lPIN="<<lastPIN<<G4endl;
00377 #endif
00378   if(!onlyCS) lastTM=GetQ2max(PDG, tgZ, tgN, pMom); // Calculate (-t)_max=Q2_max (GeV2)
00379 #ifdef pdebug
00380   G4cout<<"G4QElasticCrosSec::CalcCS:oCS="<<onlyCS<<",-t="<<lastTM<<", p="<<lastLP<<G4endl;
00381 #endif
00382   if(lastLP>lPMin && lastLP<=lastPIN)   // Linear fit is made using precalculated tables
00383   {
00384     if(lastLP==lastPIN)
00385     {
00386       G4double shift=(lastLP-lPMin)/dlnP+.000001; // Log distance from lPMin
00387       G4int    blast=static_cast<int>(shift); // this is a bin number of the lower edge (0)
00388       if(blast<0 || blast>=nLast) G4cout<<"G4QEleastCS::CCS:b="<<blast<<","<<nLast<<G4endl;
00389       lastSIG = lastCST[blast];
00390       if(!onlyCS)                       // Skip the differential cross-section parameters
00391       {
00392         theSS  = lastSST[blast];
00393         theS1  = lastS1T[blast];
00394         theB1  = lastB1T[blast];
00395         theS2  = lastS2T[blast];
00396         theB2  = lastB2T[blast];
00397         theS3  = lastS3T[blast];
00398         theB3  = lastB3T[blast];
00399         theS4  = lastS4T[blast];
00400         theB4  = lastB4T[blast];
00401       }
00402 #ifdef pdebug
00403       G4cout<<"G4QPionPlusElasticCroS::CalculateCS:(E) S1="<<theS1<<", B1="<<theB1<<G4endl;
00404 #endif
00405     }
00406     else
00407     {
00408       G4double shift=(lastLP-lPMin)/dlnP;        // a shift from the beginning of the table
00409       G4int    blast=static_cast<int>(shift);    // the lower bin number
00410       if(blast<0)   blast=0;
00411       if(blast>=nLast) blast=nLast-1;            // low edge of the last bin
00412       shift-=blast;                              // step inside the unit bin
00413       G4int lastL=blast+1;                       // the upper bin number
00414       G4double SIGL=lastCST[blast];              // the basic value of the cross-section
00415       lastSIG= SIGL+shift*(lastCST[lastL]-SIGL); // calculated total elastic cross-section
00416 #ifdef pdebug
00417       G4cout<<"G4QElCS::CalcCrossSection: Sig="<<lastSIG<<", P="<<pMom<<", Z="<<tgZ<<", N="
00418             <<tgN<<", PDG="<<PDG<<", onlyCS="<<onlyCS<<G4endl;
00419 #endif
00420       if(!onlyCS)                       // Skip the differential cross-section parameters
00421       {
00422         G4double SSTL=lastSST[blast];           // the low bin of the first squared slope
00423         theSS=SSTL+shift*(lastSST[lastL]-SSTL); // the basic value of the first sq.slope
00424         G4double S1TL=lastS1T[blast];           // the low bin of the first mantissa
00425         theS1=S1TL+shift*(lastS1T[lastL]-S1TL); // the basic value of the first mantissa
00426         G4double B1TL=lastB1T[blast];           // the low bin of the first slope
00427 #ifdef pdebug
00428         G4cout<<"G4QElCS::CalcCrossSection:bl="<<blast<<",ls="<<lastL<<",SL="<<S1TL<<",SU="
00429               <<lastS1T[lastL]<<",BL="<<B1TL<<",BU="<<lastB1T[lastL]<<G4endl;
00430 #endif
00431         theB1=B1TL+shift*(lastB1T[lastL]-B1TL); // the basic value of the first slope
00432         G4double S2TL=lastS2T[blast];           // the low bin of the second mantissa
00433         theS2=S2TL+shift*(lastS2T[lastL]-S2TL); // the basic value of the second mantissa
00434         G4double B2TL=lastB2T[blast];           // the low bin of the second slope
00435         theB2=B2TL+shift*(lastB2T[lastL]-B2TL); // the basic value of the second slope
00436         G4double S3TL=lastS3T[blast];           // the low bin of the third mantissa
00437         theS3=S3TL+shift*(lastS3T[lastL]-S3TL); // the basic value of the third mantissa
00438 #ifdef pdebug
00439         G4cout<<"G4QElCS::CCS: s3l="<<S3TL<<",sh3="<<shift<<",s3h="<<lastS3T[lastL]<<",b="
00440               <<blast<<",l="<<lastL<<G4endl;
00441 #endif
00442         G4double B3TL=lastB3T[blast];           // the low bin of the third slope
00443         theB3=B3TL+shift*(lastB3T[lastL]-B3TL); // the basic value of the third slope
00444         G4double S4TL=lastS4T[blast];           // the low bin of the 4-th mantissa
00445         theS4=S4TL+shift*(lastS4T[lastL]-S4TL); // the basic value of the 4-th mantissa
00446 #ifdef pdebug
00447         G4cout<<"G4QElCS::CCS: s4l="<<S4TL<<",sh4="<<shift<<",s4h="<<lastS4T[lastL]<<",b="
00448               <<blast<<",l="<<lastL<<G4endl;
00449 #endif
00450         G4double B4TL=lastB4T[blast];           // the low bin of the 4-th slope
00451         theB4=B4TL+shift*(lastB4T[lastL]-B4TL); // the basic value of the 4-th slope
00452       }
00453 #ifdef pdebug
00454       G4cout<<"G4QPionPlusElasticCroS::CalculateCS:(I) S1="<<theS1<<", B1="<<theB1<<G4endl;
00455 #endif
00456     }
00457   }
00458   else lastSIG=GetTabValues(lastLP, PDG, tgZ, tgN); // Direct calculation beyond the table
00459   if(lastSIG<0.) lastSIG = 0.;                   // @@ a Warning print can be added
00460 #ifdef pdebug
00461   G4cout<<"G4QPionMinusElasticCrossSection::CalculateCS: END, onlyCS="<<onlyCS<<G4endl;
00462 #endif
00463   return lastSIG;
00464 }
00465 
00466 // It has parameter sets for all tZ/tN/PDG, using them the tables can be created/updated
00467 G4double G4QPionMinusElasticCrossSection::GetPTables(G4double LP, G4double ILP, G4int PDG,
00468                                                   G4int tgZ, G4int tgN)
00469 {
00470   // @@ At present all nA==pA ---------> Each neucleus can have not more than 51 parameters
00471   static const G4double pwd=2727;
00472   const G4int n_pimpel=38;                // #of parameters for pp-elastic (<nPoints=128)
00473   //                           -0-  -1-   -2- -3- -4- -5-  -6-  -7-   -8-  -9--10-11-12-
00474   G4double pimp_el[n_pimpel]={1.27,1.53,.0676,3.5,.36,.04,.017,.0025,.0557,2.4,7.,.7,.6,
00475                               .05,5.,74.,3.,3.4,.2,.17,.001,8.,.055,3.64,5.e-5,4000.,1500.,
00476                               .46,1.2e6,3.5e6,5.e-5,1.e10,8.5e8,1.e10,1.1,3.4e6,6.8e6,0.};
00477   //                         -13-14--15--16--17-18--19--20--21- -22- -23- -24-  -25- -26-
00478   //                          -27--28-  -29-   -30-  -31- -32-  -33-  -34- -35- -36- -37-
00479   if(PDG ==-211)
00480   {
00481     // -- Total pp elastic cross section cs & s1/b1 (main), s2/b2 (tail1), s3/b3 (tail2) --
00482     //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|
00483     //CS=2.865/p2s/(1+.0022/p2s)+(18.9+.6461*dl1*dl1+9./p)/(1.+.425*lp)/(1.+.4276/p4);
00484     //   par(0)       par(7)     par(1) par(2)      par(4)      par(5)         par(6)
00485     //dl2=lp-5., s1=(74.+3.*dl2*dl2)/(1+3.4/p4/p)+(.2/p2+17.*p)/(p4+.001*sp),
00486     //     par(8) par(9) par(10)        par(11)   par(12)par(13)    par(14)
00487     // b1=8.*p**.055/(1.+3.64/p3); s2=5.e-5+4000./(p4+1500.*p); b2=.46+1.2e6/(p4+3.5e6/sp);
00488     // par(15) par(16)  par(17)     par(18) par(19)  par(20)   par(21) par(22)  par(23)
00489     // s3=5.e-5+1.e10/(p4*p4+8.5e8*p2+1.e10); b3=1.1+3.4e6/(p4+6.8e6); ss=0.
00490     //  par(24) par(25)     par(26)  par(27) par(28) par(29)  par(30)   par(31)
00491     //
00492     if(lastPAR[nLast]!=pwd) // A unique flag to avoid the repeatable definition
00493     {
00494       if ( tgZ == 1 && tgN == 0 )
00495       {
00496         for (G4int ip=0; ip<n_pimpel; ip++) lastPAR[ip]=pimp_el[ip]; // PiMinus+P
00497       }
00498       else
00499       {
00500         G4double a=tgZ+tgN;
00501         G4double sa=std::sqrt(a);
00502         G4double ssa=std::sqrt(sa);
00503         G4double asa=a*sa;
00504         G4double a2=a*a;
00505         G4double a3=a2*a;
00506         G4double a4=a3*a;
00507         G4double a5=a4*a;
00508         G4double a6=a4*a2;
00509         G4double a7=a6*a;
00510         G4double a8=a7*a;
00511         G4double a9=a8*a;
00512         G4double a10=a5*a5;
00513         G4double a12=a6*a6;
00514         G4double a14=a7*a7;
00515         G4double a16=a8*a8;
00516         G4double a17=a16*a;
00517         //G4double a20=a16*a4;
00518         G4double a32=a16*a16;
00519         // Reaction cross-section parameters (pel=peh_fit.f)
00520         lastPAR[0]=(.95*sa+2.E5/a16)/(1.+17/a);                              // p1
00521         lastPAR[1]=a/(1./4.4+1./a);                                          // p2
00522         lastPAR[2]=.22/std::pow(a,.33);                                      // p3
00523         lastPAR[3]=.5*a/(1.+3./a+1800./a8);                                  // p4
00524         lastPAR[4]=3.E-4*std::pow(a,.32)/(1.+14./a2);                        // p5
00525         lastPAR[5]=0.;                                                       // p6 not used
00526         lastPAR[6]=(.55+.001*a2)/(1.+4.E-4*a2);                              // p7
00527         lastPAR[7]=(.0002/asa+4.E-9*a)/(1.+9./a4);                           // p8
00528         lastPAR[8]=0.;                                                       // p9 not used
00529         // @@ the differential cross-section is parameterized separately for A>6 & A<7
00530         if(a<6.5)
00531         {
00532           G4double a28=a16*a12;
00533           // The main pre-exponent      (pel_sg)
00534           lastPAR[ 9]=4000*a;                                // p1
00535           lastPAR[10]=1.2e7*a8+380*a17;                      // p2
00536           lastPAR[11]=.7/(1.+4.e-12*a16);                    // p3
00537           lastPAR[12]=2.5/a8/(a4+1.e-16*a32);                // p4
00538           lastPAR[13]=.28*a;                                 // p5
00539           lastPAR[14]=1.2*a2+2.3;                            // p6
00540           lastPAR[15]=3.8/a;                                 // p7
00541           // The main slope             (pel_sl)
00542           lastPAR[16]=.01/(1.+.0024*a5);                     // p1
00543           lastPAR[17]=.2*a;                                  // p2
00544           lastPAR[18]=9.e-7/(1.+.035*a5);                    // p3
00545           lastPAR[19]=(42.+2.7e-11*a16)/(1.+.14*a);          // p4
00546           // The main quadratic         (pel_sh)
00547           lastPAR[20]=2.25*a3;                               // p1
00548           lastPAR[21]=18.;                                   // p2
00549           lastPAR[22]=2.4e-3*a8/(1.+2.6e-4*a7);              // p3
00550           lastPAR[23]=3.5e-36*a32*a8/(1.+5.e-15*a32/a);      // p4
00551           // The 1st max pre-exponent   (pel_qq)
00552           lastPAR[24]=1.e5/(a8+2.5e12/a16);                  // p1
00553           lastPAR[25]=8.e7/(a12+1.e-27*a28*a28);             // p2 
00554           lastPAR[26]=.0006*a3;                              // p3
00555           // The 1st max slope          (pel_qs)
00556           lastPAR[27]=10.+4.e-8*a12*a;                       // p1
00557           lastPAR[28]=.114;                                  // p2
00558           lastPAR[29]=.003;                                  // p3
00559           lastPAR[30]=2.e-23;                                // p4
00560           // The effective pre-exponent (pel_ss)
00561           lastPAR[31]=1./(1.+.0001*a8);                      // p1
00562           lastPAR[32]=1.5e-4/(1.+5.e-6*a12);                 // p2
00563           lastPAR[33]=.03;                                   // p3
00564           // The effective slope        (pel_sb)
00565           lastPAR[34]=a/2;                                   // p1
00566           lastPAR[35]=2.e-7*a4;                              // p2
00567           lastPAR[36]=4.;                                    // p3
00568           lastPAR[37]=64./a3;                                // p4
00569           // The gloria pre-exponent    (pel_us)
00570           lastPAR[38]=1.e8*std::exp(.32*asa);                // p1
00571           lastPAR[39]=20.*std::exp(.45*asa);                 // p2
00572           lastPAR[40]=7.e3+2.4e6/a5;                         // p3
00573           lastPAR[41]=2.5e5*std::exp(.085*a3);               // p4
00574           lastPAR[42]=2.5*a;                                 // p5
00575           // The gloria slope           (pel_ub)
00576           lastPAR[43]=920.+.03*a8*a3;                        // p1
00577           lastPAR[44]=93.+.0023*a12;                         // p2
00578 #ifdef pdebug
00579          G4cout<<"G4QElCS::CalcCS:la "<<lastPAR[38]<<", "<<lastPAR[39]<<", "<<lastPAR[40]
00580                <<", "<<lastPAR[42]<<", "<<lastPAR[43]<<", "<<lastPAR[44]<<G4endl;
00581 #endif
00582         }
00583         else
00584         {
00585           G4double p1a10=2.2e-28*a10;
00586           G4double r4a16=6.e14/a16;
00587           G4double s4a16=r4a16*r4a16;
00588           // a24
00589           // a36
00590           // The main pre-exponent      (peh_sg)
00591           lastPAR[ 9]=4.5*std::pow(a,1.15);                  // p1
00592           lastPAR[10]=.06*std::pow(a,.6);                    // p2
00593           lastPAR[11]=.6*a/(1.+2.e15/a16);                   // p3
00594           lastPAR[12]=.17/(a+9.e5/a3+1.5e33/a32);            // p4
00595           lastPAR[13]=(.001+7.e-11*a5)/(1.+4.4e-11*a5);      // p5
00596           lastPAR[14]=(p1a10*p1a10+2.e-29)/(1.+2.e-22*a12);  // p6
00597           // The main slope             (peh_sl)
00598           lastPAR[15]=400./a12+2.e-22*a9;                    // p1
00599           lastPAR[16]=1.e-32*a12/(1.+5.e22/a14);             // p2
00600           lastPAR[17]=1000./a2+9.5*sa*ssa;                   // p3
00601           lastPAR[18]=4.e-6*a*asa+1.e11/a16;                 // p4
00602           lastPAR[19]=(120./a+.002*a2)/(1.+2.e14/a16);       // p5
00603           lastPAR[20]=9.+100./a;                             // p6
00604           // The main quadratic         (peh_sh)
00605           lastPAR[21]=.002*a3+3.e7/a6;                       // p1
00606           lastPAR[22]=7.e-15*a4*asa;                         // p2
00607           lastPAR[23]=9000./a4;                              // p3
00608           // The 1st max pre-exponent   (peh_qq)
00609           lastPAR[24]=.0011*asa/(1.+3.e34/a32/a4);           // p1
00610           lastPAR[25]=1.e-5*a2+2.e14/a16;                    // p2
00611           lastPAR[26]=1.2e-11*a2/(1.+1.5e19/a12);            // p3
00612           lastPAR[27]=.016*asa/(1.+5.e16/a16);               // p4
00613           // The 1st max slope          (peh_qs)
00614           lastPAR[28]=.002*a4/(1.+7.e7/std::pow(a-6.83,14)); // p1
00615           lastPAR[29]=2.e6/a6+7.2/std::pow(a,.11);           // p2
00616           lastPAR[30]=11.*a3/(1.+7.e23/a16/a8);              // p3
00617           lastPAR[31]=100./asa;                              // p4
00618           // The 2nd max pre-exponent   (peh_ss)
00619           lastPAR[32]=(.1+4.4e-5*a2)/(1.+5.e5/a4);           // p1
00620           lastPAR[33]=3.5e-4*a2/(1.+1.e8/a8);                // p2
00621           lastPAR[34]=1.3+3.e5/a4;                           // p3
00622           lastPAR[35]=500./(a2+50.)+3;                       // p4
00623           lastPAR[36]=1.e-9/a+s4a16*s4a16;                   // p5
00624           // The 2nd max slope          (peh_sb)
00625           lastPAR[37]=.4*asa+3.e-9*a6;                       // p1
00626           lastPAR[38]=.0005*a5;                              // p2
00627           lastPAR[39]=.002*a5;                               // p3
00628           lastPAR[40]=10.;                                   // p4
00629           // The effective pre-exponent (peh_us)
00630           lastPAR[41]=.05+.005*a;                            // p1
00631           lastPAR[42]=7.e-8/sa;                              // p2
00632           lastPAR[43]=.8*sa;                                 // p3
00633           lastPAR[44]=.02*sa;                                // p4
00634           lastPAR[45]=1.e8/a3;                               // p5
00635           lastPAR[46]=3.e32/(a32+1.e32);                     // p6
00636           // The effective slope        (peh_ub)
00637           lastPAR[47]=24.;                                   // p1
00638           lastPAR[48]=20./sa;                                // p2
00639           lastPAR[49]=7.e3*a/(sa+1.);                        // p3
00640           lastPAR[50]=900.*sa/(1.+500./a3);                  // p4
00641 #ifdef pdebug
00642          G4cout<<"G4QElCS::CalcCS:ha "<<lastPAR[41]<<", "<<lastPAR[42]<<", "<<lastPAR[43]
00643                <<", "<<lastPAR[44]<<", "<<lastPAR[45]<<", "<<lastPAR[46]<<G4endl;
00644 #endif
00645         }
00646         // Parameter for lowEnergyNeutrons
00647         lastPAR[51]=1.e15+2.e27/a4/(1.+2.e-18*a16);
00648       }
00649       lastPAR[nLast]=pwd;
00650       // and initialize the zero element of the table
00651       G4double lp=lPMin;                                      // ln(momentum)
00652       G4bool memCS=onlyCS;                                    // ??
00653       onlyCS=false;
00654       lastCST[0]=GetTabValues(lp, PDG, tgZ, tgN); // Calculate AMDB tables
00655       onlyCS=memCS;
00656       lastSST[0]=theSS;
00657       lastS1T[0]=theS1;
00658       lastB1T[0]=theB1;
00659       lastS2T[0]=theS2;
00660       lastB2T[0]=theB2;
00661       lastS3T[0]=theS3;
00662       lastB3T[0]=theB3;
00663       lastS4T[0]=theS4;
00664       lastB4T[0]=theB4;
00665 #ifdef pdebug
00666       G4cout<<"G4QPionMinusElasticCrossSection::GetPTables:ip=0(init), lp="<<lp<<",S1="
00667             <<theS1<<",B1="<<theB1<<",S2="<<theS2<<",B2="<<theB3<<",S3="<<theS3
00668             <<",B3="<<theB3<<",S4="<<theS4<<",B4="<<theB4<<G4endl;
00669 #endif
00670     }
00671     if(LP>ILP)
00672     {
00673       G4int ini = static_cast<int>((ILP-lPMin+.000001)/dlnP)+1; // already inited till this
00674       if(ini<0) ini=0;
00675       if(ini<nPoints)
00676       {
00677         G4int fin = static_cast<int>((LP-lPMin)/dlnP)+1; // final bin of initialization
00678         if(fin>=nPoints) fin=nLast;               // Limit of the tabular initialization
00679         if(fin>=ini)
00680         {
00681           G4double lp=0.;
00682           for(G4int ip=ini; ip<=fin; ip++)        // Calculate tabular CS,S1,B1,S2,B2,S3,B3
00683           {
00684             lp=lPMin+ip*dlnP;                     // ln(momentum)
00685             G4bool memCS=onlyCS;
00686             onlyCS=false;
00687             lastCST[ip]=GetTabValues(lp, PDG, tgZ, tgN); // Calculate AMDB tables (ret CS)
00688             onlyCS=memCS;
00689             lastSST[ip]=theSS;
00690             lastS1T[ip]=theS1;
00691             lastB1T[ip]=theB1;
00692             lastS2T[ip]=theS2;
00693             lastB2T[ip]=theB2;
00694             lastS3T[ip]=theS3;
00695             lastB3T[ip]=theB3;
00696             lastS4T[ip]=theS4;
00697             lastB4T[ip]=theB4;
00698 #ifdef pdebug
00699             G4cout<<"G4QPionMinusElasticCrossSection::GetPTables:ip="<<ip<<",lp="<<lp
00700                   <<",S1="<<theS1<<",B1="<<theB1<<",S2="<<theS2<<",B2="<<theB2<<",S3="
00701                   <<theS3<<",B3="<<theB3<<",S4="<<theS4<<",B4="<<theB4<<G4endl;
00702 #endif
00703           }
00704           return lp;
00705         }
00706         else G4cout<<"*Warning*G4QPionMinusElasticCrossSection::GetPTables: PDG="<<PDG
00707                    <<", Z="<<tgZ<<", N="<<tgN<<", i="<<ini<<" > fin="<<fin<<", LP="<<LP
00708                    <<" > ILP="<<ILP<<" nothing is done!"<<G4endl;
00709       }
00710       else G4cout<<"*Warning*G4QPionMinusElasticCrossSection::GetPTables: PDG="<<PDG
00711                  <<", Z="<<tgZ<<", N="<<tgN<<", i="<<ini<<">= max="<<nPoints<<", LP="<<LP
00712                  <<" > ILP="<<ILP<<", lPMax="<<lPMax<<" nothing is done!"<<G4endl;
00713     }
00714 #ifdef pdebug
00715     else G4cout<<"*Warning*G4QPionMinusElasticCrossSection::GetPTab:PDG="<<PDG<<", Z="<<tgZ
00716                <<", N="<<tgN<<", LP="<<LP<<" <= ILP="<<ILP<<" nothing is done!"<<G4endl;
00717 #endif
00718   }
00719   else
00720   {
00721     // G4cout<<"*Error*G4QPionMinusElasticCrossSection::GetPTables: PDG="<<PDG<<", Z="<<tgZ
00722     //       <<", N="<<tgN<<", while it is defined only for PDG=-211"<<G4endl;
00723     // throw G4QException("G4QPionMinusElasticCrossSection::GetPTables:onlyPipA implemented");
00724     G4ExceptionDescription ed;
00725     ed << "PDG = " << PDG << ", Z = " << tgZ << ", N = " << tgN
00726        << ", while it is defined only for PDG=-211 (pi-)" << G4endl;
00727     G4Exception("G4QPionMinusElasticCrossSection::GetPTables()", "HAD_CHPS_0000",
00728                 FatalException, ed);
00729   }
00730   return ILP;
00731 }
00732 
00733 // Returns Q2=-t in independent units (MeV^2) (all internal calculations are in GeV)
00734 G4double G4QPionMinusElasticCrossSection::GetExchangeT(G4int tgZ, G4int tgN, G4int PDG)
00735 {
00736   static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
00737   static const G4double third=1./3.;
00738   static const G4double fifth=1./5.;
00739   static const G4double sevth=1./7.;
00740 #ifdef tdebug
00741   G4cout<<"G4QPiPlElCS::GetExcT: F="<<onlyCS<<",Z="<<tgZ<<",N="<<tgN<<",PDG="<<PDG<<G4endl;
00742 #endif
00743   if(PDG!=-211)G4cout<<"Warning*G4QPionMinusElasticCrossSection::GetExT:PDG="<<PDG<<G4endl;
00744   if(onlyCS)G4cout<<"Warning*G4QPionMinusElasticCrossSection::GetExchanT:onlyCS=1"<<G4endl;
00745   if(lastLP<-4.3) return lastTM*GeVSQ*G4UniformRand();// S-wave for p<14 MeV/c (kinE<.1MeV)
00746   G4double q2=0.;
00747   if(tgZ==1 && tgN==0)                // ===> p+p=p+p
00748   {
00749 #ifdef tdebug
00750     G4cout<<"G4QElasticCS::GetExchangeT: TM="<<lastTM<<",S1="<<theS1<<",B1="<<theB1<<",S2="
00751           <<theS2<<",B2="<<theB2<<",S3="<<theS3<<",B3="<<theB3<<",GeV2="<<GeVSQ<<G4endl;
00752 #endif
00753     G4double E1=lastTM*theB1;
00754     G4double R1=(1.-std::exp(-E1));
00755 #ifdef tdebug
00756     G4double ts1=-std::log(1.-R1)/theB1;
00757     G4double ds1=std::fabs(ts1-lastTM)/lastTM;
00758     if(ds1>.0001)
00759       G4cout<<"*Warning*G4QElCS::GetExT:1p "<<ts1<<"#"<<lastTM<<",d="<<ds1
00760             <<",R1="<<R1<<",E1="<<E1<<G4endl;
00761 #endif
00762     G4double E2=lastTM*theB2;
00763     G4double R2=(1.-std::exp(-E2*E2*E2));
00764 #ifdef tdebug
00765     G4double ts2=std::pow(-std::log(1.-R2),.333333333)/theB2;
00766     G4double ds2=std::fabs(ts2-lastTM)/lastTM;
00767     if(ds2>.0001)
00768       G4cout<<"*Warning*G4QElCS::GetExT:2p "<<ts2<<"#"<<lastTM<<",d="<<ds2
00769             <<",R2="<<R2<<",E2="<<E2<<G4endl;
00770 #endif
00771     G4double E3=lastTM*theB3;
00772     G4double R3=(1.-std::exp(-E3));
00773 #ifdef tdebug
00774     G4double ts3=-std::log(1.-R3)/theB3;
00775     G4double ds3=std::fabs(ts3-lastTM)/lastTM;
00776     if(ds3>.0001)
00777       G4cout<<"*Warning*G4QElCS::GetExT:3p "<<ts3<<"#"<<lastTM<<",d="<<ds3
00778             <<",R3="<<R1<<",E3="<<E3<<G4endl;
00779 #endif
00780     G4double I1=R1*theS1/theB1;
00781     G4double I2=R2*theS2;
00782     G4double I3=R3*theS3;
00783     G4double I12=I1+I2;
00784     G4double rand=(I12+I3)*G4UniformRand();
00785     if     (rand<I1 )
00786     {
00787       G4double ran=R1*G4UniformRand();
00788       if(ran>1.) ran=1.;
00789       q2=-std::log(1.-ran)/theB1;
00790     }
00791     else if(rand<I12)
00792     {
00793       G4double ran=R2*G4UniformRand();
00794       if(ran>1.) ran=1.;
00795       q2=-std::log(1.-ran);
00796       if(q2<0.) q2=0.;
00797       q2=std::pow(q2,third)/theB2;
00798     }
00799     else
00800     {
00801       G4double ran=R3*G4UniformRand();
00802       if(ran>1.) ran=1.;
00803       q2=-std::log(1.-ran)/theB3;
00804     }
00805   }
00806   else
00807   {
00808     G4double a=tgZ+tgN;
00809 #ifdef tdebug
00810     G4cout<<"G4QElCS::GetExT: a="<<a<<",t="<<lastTM<<",S1="<<theS1<<",B1="<<theB1<<",SS="
00811           <<theSS<<",S2="<<theS2<<",B2="<<theB2<<",S3="<<theS3<<",B3="<<theB3<<",S4="
00812           <<theS4<<",B4="<<theB4<<G4endl;
00813 #endif
00814     G4double E1=lastTM*(theB1+lastTM*theSS);
00815     G4double R1=(1.-std::exp(-E1));
00816     G4double tss=theSS+theSS; // for future solution of quadratic equation (imediate check)
00817 #ifdef tdebug
00818     G4double ts1=-std::log(1.-R1)/theB1;
00819     if(std::fabs(tss)>1.e-7) ts1=(std::sqrt(theB1*(theB1+(tss+tss)*ts1))-theB1)/tss;
00820     G4double ds1=(ts1-lastTM)/lastTM;
00821     if(ds1>.0001)
00822       G4cout<<"*Warning*G4QElCS::GetExT:1a "<<ts1<<"#"<<lastTM<<",d="<<ds1
00823             <<",R1="<<R1<<",E1="<<E1<<G4endl;
00824 #endif
00825     G4double tm2=lastTM*lastTM;
00826     G4double E2=lastTM*tm2*theB2;                   // power 3 for lowA, 5 for HighA (1st)
00827     if(a>6.5)E2*=tm2;                               // for heavy nuclei
00828     G4double R2=(1.-std::exp(-E2));
00829 #ifdef tdebug
00830     G4double ts2=-std::log(1.-R2)/theB2;
00831     if(a<6.5)ts2=std::pow(ts2,third);
00832     else     ts2=std::pow(ts2,fifth);
00833     G4double ds2=std::fabs(ts2-lastTM)/lastTM;
00834     if(ds2>.0001)
00835       G4cout<<"*Warning*G4QElCS::GetExT:2a "<<ts2<<"#"<<lastTM<<",d="<<ds2
00836             <<",R2="<<R2<<",E2="<<E2<<G4endl;
00837 #endif
00838     G4double E3=lastTM*theB3;
00839     if(a>6.5)E3*=tm2*tm2*tm2;                       // power 1 for lowA, 7 (2nd) for HighA
00840     G4double R3=(1.-std::exp(-E3));
00841 #ifdef tdebug
00842     G4double ts3=-std::log(1.-R3)/theB3;
00843     if(a>6.5)ts3=std::pow(ts3,sevth);
00844     G4double ds3=std::fabs(ts3-lastTM)/lastTM;
00845     if(ds3>.0001)
00846       G4cout<<"*Warning*G4QElCS::GetExT:3a "<<ts3<<"#"<<lastTM<<",d="<<ds3
00847             <<",R3="<<R3<<",E3="<<E3<<G4endl;
00848 #endif
00849     G4double E4=lastTM*theB4;
00850     G4double R4=(1.-std::exp(-E4));
00851 #ifdef tdebug
00852     G4double ts4=-std::log(1.-R4)/theB4;
00853     G4double ds4=std::fabs(ts4-lastTM)/lastTM;
00854     if(ds4>.0001)
00855       G4cout<<"*Warning*G4QElCS::GetExT:4a "<<ts4<<"#"<<lastTM<<",d="<<ds4
00856             <<",R4="<<R4<<",E4="<<E4<<G4endl;
00857 #endif
00858     G4double I1=R1*theS1;
00859     G4double I2=R2*theS2;
00860     G4double I3=R3*theS3;
00861     G4double I4=R4*theS4;
00862     G4double I12=I1+I2;
00863     G4double I13=I12+I3;
00864     G4double rand=(I13+I4)*G4UniformRand();
00865 #ifdef tdebug
00866     G4cout<<"G4QElCS::GtExT:1="<<I1<<",2="<<I2<<",3="<<I3<<",4="<<I4<<",r="<<rand<<G4endl;
00867 #endif
00868     if(rand<I1)
00869     {
00870       G4double ran=R1*G4UniformRand();
00871       if(ran>1.) ran=1.;
00872       q2=-std::log(1.-ran)/theB1;
00873       if(std::fabs(tss)>1.e-7) q2=(std::sqrt(theB1*(theB1+(tss+tss)*q2))-theB1)/tss;
00874 #ifdef tdebug
00875       G4cout<<"G4QElCS::GetExT:Q2="<<q2<<",ss="<<tss/2<<",b1="<<theB1<<",t1="<<ts1<<G4endl;
00876 #endif
00877     }
00878     else if(rand<I12)
00879     {
00880       G4double ran=R2*G4UniformRand();
00881       if(ran>1.) ran=1.;
00882       q2=-std::log(1.-ran)/theB2;
00883       if(q2<0.) q2=0.;
00884       if(a<6.5) q2=std::pow(q2,third);
00885       else      q2=std::pow(q2,fifth);
00886 #ifdef tdebug
00887       G4cout<<"G4QElCS::GetExT: Q2="<<q2<<", r2="<<R2<<", b2="<<theB2<<",t2="<<ts2<<G4endl;
00888 #endif
00889     }
00890     else if(rand<I13)
00891     {
00892       G4double ran=R3*G4UniformRand();
00893       if(ran>1.) ran=1.;
00894       q2=-std::log(1.-ran)/theB3;
00895       if(q2<0.) q2=0.;
00896       if(a>6.5) q2=std::pow(q2,sevth);
00897 #ifdef tdebug
00898       G4cout<<"G4QElCS::GetExT:Q2="<<q2<<", r3="<<R2<<", b3="<<theB2<<",t3="<<ts2<<G4endl;
00899 #endif
00900     }
00901     else
00902     {
00903       G4double ran=R4*G4UniformRand();
00904       if(ran>1.) ran=1.;
00905       q2=-std::log(1.-ran)/theB4;
00906       if(a<6.5) q2=lastTM-q2;                    // u reduced for lightA (starts from 0)
00907 #ifdef tdebug
00908       G4cout<<"G4QElCS::GetExT:Q2="<<q2<<",m="<<lastTM<<",b4="<<theB3<<",t4="<<ts3<<G4endl;
00909 #endif
00910     }
00911   }
00912   if(q2<0.) q2=0.;
00913   if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElasticCrossSect::GetExchangeT: -t="<<q2<<G4endl;
00914   if(q2>lastTM)
00915   {
00916 #ifdef tdebug
00917     G4cout<<"*Warning*G4QElasticCrossSect::GetExT:-t="<<q2<<">"<<lastTM<<G4endl;
00918 #endif
00919     q2=lastTM;
00920   }
00921   return q2*GeVSQ;
00922 }
00923 
00924 // Returns B in independent units (MeV^-2) (all internal calculations are in GeV) see ExT
00925 G4double G4QPionMinusElasticCrossSection::GetSlope(G4int tgZ, G4int tgN, G4int PDG)
00926 {
00927   static const G4double GeVSQ=gigaelectronvolt*gigaelectronvolt;
00928 #ifdef tdebug
00929   G4cout<<"G4QElasticCS::GetSlope:"<<onlyCS<<", Z="<<tgZ<<",N="<<tgN<<",PDG="<<PDG<<G4endl;
00930 #endif
00931   if(onlyCS)G4cout<<"Warning*G4QPionMinusElasticCrossSection::GetSlope:onlCS=true"<<G4endl;
00932   if(lastLP<-4.3) return 0.;          // S-wave for p<14 MeV/c (kinE<.1MeV)
00933   if(PDG !=-211)
00934   {
00935     // G4cout<<"*Error*G4QPionMinusElasticCrossSection::GetSlope: PDG="<<PDG<<", Z="<<tgZ
00936     //       <<", N="<<tgN<<", while it is defined only for PDG=-211"<<G4endl;
00937     // throw G4QException("G4QPionMinusElasticCrossSection::GetSlope: pipA are implemented");
00938     G4ExceptionDescription ed;
00939     ed << "PDG = " << PDG << ", Z = " << tgZ << ", N = " << tgN
00940        << ", while it is defined only for PDG=-211" << G4endl;
00941     G4Exception("G4QPionMinusElasticCrossSection::GetSlope()", "HAD_CHPS_0000", 
00942                 FatalException, ed);
00943   }
00944   if(theB1<0.) theB1=0.;
00945   if(!(theB1>=-1.||theB1<=1.))G4cout<<"*NAN*G4QElasticCrossSect::Getslope:"<<theB1<<G4endl;
00946   return theB1/GeVSQ;
00947 }
00948 
00949 // Returns half max(Q2=-t) in independent units (MeV^2)
00950 G4double G4QPionMinusElasticCrossSection::GetHMaxT()
00951 {
00952   static const G4double HGeVSQ=gigaelectronvolt*gigaelectronvolt/2.;
00953   return lastTM*HGeVSQ;
00954 }
00955 
00956 // lastLP is used, so calculating tables, one need to remember and then recover lastLP
00957 G4double G4QPionMinusElasticCrossSection::GetTabValues(G4double lp, G4int PDG, G4int tgZ,
00958                                                     G4int tgN)
00959 {
00960   if(PDG!=-211)G4cout<<"*Warn*G4QPionMinusElasticCrossSection::GetTabV: PDG="<<PDG<<G4endl;
00961   if(tgZ<0 || tgZ>92)
00962   {
00963     G4cout<<"*Warning*G4QPionPlusElCS::GetTabValue:(1-92) No isotopes for Z="<<tgZ<<G4endl;
00964     return 0.;
00965   }
00966   G4int iZ=tgZ-1; // Z index
00967   if(iZ<0)
00968   {
00969     iZ=0;         // conversion of the neutron target to the proton target
00970     tgZ=1;
00971     tgN=0;
00972   }
00973   //if(nN[iZ][0] < 0)
00974   //{
00975 #ifdef isodebug
00976   //  G4cout<<"*Warning*G4QElasticCS::GetTabValue: No isotopes for Z="<<tgZ<<G4endl;
00977 #endif
00978   //  return 0.;
00979   //}
00980 #ifdef pdebug
00981   G4cout<<"G4QElasticCS::GetTabVal: lp="<<lp<<",Z="<<tgZ<<",N="<<tgN<<",PDG="<<PDG<<G4endl;
00982 #endif
00983   G4double p=std::exp(lp);              // momentum
00984   G4double sp=std::sqrt(p);             // sqrt(p)
00985   G4double p2=p*p;            
00986   G4double p3=p2*p;
00987   G4double p4=p3*p;
00988   if ( tgZ == 1 && tgN == 0 ) // PiMin+P
00989   {
00990     G4double dl2=lp-lastPAR[14];
00991     theSS=lastPAR[37];
00992     theS1=(lastPAR[15]+lastPAR[16]*dl2*dl2)/(1.+lastPAR[17]/p4/p)+
00993           (lastPAR[18]/p2+lastPAR[19]*p)/(p4+lastPAR[20]*sp);
00994     theB1=lastPAR[21]*std::pow(p,lastPAR[22])/(1.+lastPAR[23]/p3);
00995     theS2=lastPAR[24]+lastPAR[25]/(p4+lastPAR[26]*p);
00996     theB2=lastPAR[27]+lastPAR[28]/(p4+lastPAR[29]/sp); 
00997     theS3=lastPAR[30]+lastPAR[31]/(p4*p4+lastPAR[32]*p2+lastPAR[33]);
00998     theB3=lastPAR[34]+lastPAR[35]/(p4+lastPAR[36]); 
00999     theS4=0.;
01000     theB4=0.; 
01001 #ifdef tdebug
01002     G4cout<<"G4QElasticCS::GetTableValues:(pp) TM="<<lastTM<<",S1="<<theS1<<",B1="<<theB1
01003           <<",S2="<<theS2<<",B2="<<theB2<<",S3="<<theS1<<",B3="<<theB1<<G4endl;
01004 #endif
01005     // Returns the total elastic pim-p cross-section (to avoid spoiling lastSIG)
01006     G4double lr=lp+lastPAR[0];  // lr
01007     G4double ld=lp-lastPAR[14];
01008     G4double dl3=lp+lastPAR[4]; // lm
01009     G4double dl4=lp-lastPAR[6]; // lh
01010 //G4cout<<"lastPAR[13] "<<lastPAR[13]<<" lastPAR[6] "<<lastPAR[6]<<" lastPAR[7] "<<lastPAR[7]<<G4endl;
01011     return lastPAR[1]/(lr*lr+lastPAR[2])+
01012            (lastPAR[8]*ld*ld+lastPAR[9]+lastPAR[10]/sp)/(1.+lastPAR[11]/p4)+
01013            lastPAR[12]/(dl3*dl3+lastPAR[5])+lastPAR[13]/(dl4*dl4+lastPAR[7]);
01014   }
01015   else
01016   {
01017     G4double p5=p4*p;
01018     G4double p6=p5*p;
01019     G4double p8=p6*p2;
01020     G4double p10=p8*p2;
01021     G4double p12=p10*p2;
01022     G4double p16=p8*p8;
01023     //G4double p24=p16*p8;
01024     G4double dl=lp-5.;
01025     G4double a=tgZ+tgN;
01026     G4double pah=std::pow(p,a/2);
01027     G4double pa=pah*pah;
01028     G4double pa2=pa*pa;
01029     if(a<6.5)
01030     {
01031       theS1=lastPAR[9]/(1.+lastPAR[10]*p4*pa)+lastPAR[11]/(p4+lastPAR[12]*p4/pa2)+
01032             (lastPAR[13]*dl*dl+lastPAR[14])/(1.+lastPAR[15]/p2);
01033       theB1=(lastPAR[16]+lastPAR[17]*p2)/(p4+lastPAR[18]/pah)+lastPAR[19];
01034       theSS=lastPAR[20]/(1.+lastPAR[21]/p2)+lastPAR[22]/(p6/pa+lastPAR[23]/p16);
01035       theS2=lastPAR[24]/(pa/p2+lastPAR[25]/p4)+lastPAR[26];
01036       theB2=lastPAR[27]*std::pow(p,lastPAR[28])+lastPAR[29]/(p8+lastPAR[30]/p16);
01037       theS3=lastPAR[31]/(pa*p+lastPAR[32]/pa)+lastPAR[33];
01038       theB3=lastPAR[34]/(p3+lastPAR[35]/p6)+lastPAR[36]/(1.+lastPAR[37]/p2);
01039       theS4=p2*(pah*lastPAR[38]*std::exp(-pah*lastPAR[39])+
01040                 lastPAR[40]/(1.+lastPAR[41]*std::pow(p,lastPAR[42])));
01041       theB4=lastPAR[43]*pa/p2/(1.+pa*lastPAR[44]);
01042 #ifdef tdebug
01043       G4cout<<"G4QElCS::GetTabV: lA, p="<<p<<",S1="<<theS1<<",B1="<<theB1<<",SS="<<theSS
01044             <<",S2="<<theS2<<",B2="<<theB2<<",S3="<<theS3<<",B3="<<theB3<<",S4="<<theS4
01045             <<",B4="<<theB4<<G4endl;
01046 #endif
01047     }
01048     else
01049     {
01050       theS1=lastPAR[9]/(1.+lastPAR[10]/p4)+lastPAR[11]/(p4+lastPAR[12]/p2)+
01051             lastPAR[13]/(p5+lastPAR[14]/p16);
01052       theB1=(lastPAR[15]/p8+lastPAR[19])/(p+lastPAR[16]/std::pow(p,lastPAR[20]))+
01053             lastPAR[17]/(1.+lastPAR[18]/p4);
01054       theSS=lastPAR[21]/(p4/std::pow(p,lastPAR[23])+lastPAR[22]/p4);
01055       theS2=lastPAR[24]/p4/(std::pow(p,lastPAR[25])+lastPAR[26]/p12)+lastPAR[27];
01056       theB2=lastPAR[28]/std::pow(p,lastPAR[29])+lastPAR[30]/std::pow(p,lastPAR[31]);
01057       theS3=lastPAR[32]/std::pow(p,lastPAR[35])/(1.+lastPAR[36]/p12)+
01058             lastPAR[33]/(1.+lastPAR[34]/p6);
01059       theB3=lastPAR[37]/p8+lastPAR[38]/p2+lastPAR[39]/(1.+lastPAR[40]/p8);
01060       theS4=(lastPAR[41]/p4+lastPAR[46]/p)/(1.+lastPAR[42]/p10)+
01061             (lastPAR[43]+lastPAR[44]*dl*dl)/(1.+lastPAR[45]/p12);
01062       theB4=lastPAR[47]/(1.+lastPAR[48]/p)+lastPAR[49]*p4/(1.+lastPAR[50]*p5);
01063 #ifdef tdebug
01064       G4cout<<"G4QElCS::GetTabV: hA, p="<<p<<",S1="<<theS1<<",B1="<<theB1<<",SS="<<theSS
01065             <<",S2="<<theS2<<",B2="<<theB2<<",S3="<<theS3<<",B3="<<theB3<<",S4="<<theS4
01066             <<",B4="<<theB4<<G4endl;
01067 #endif
01068     }
01069     // Returns the total elastic (n/p)A cross-section (to avoid spoiling lastSIG)
01070 #ifdef tdebug
01071     G4cout<<"G4QElCS::GetTabV: PDG="<<PDG<<",P="<<p<<",N="<<tgN<<",Z="<<tgZ<<G4endl;
01072 #endif
01073     //         p1               p2              p3
01074     return (lastPAR[0]*dl*dl+lastPAR[1])/(1.+lastPAR[2]/p8)+
01075            lastPAR[3]/(p4+lastPAR[4]/p3)+lastPAR[6]/(p4+lastPAR[7]/p4);
01076     //        p4             p5               p7           p8
01077   }
01078   return 0.;
01079 } // End of GetTableValues
01080 
01081 // Returns max -t=Q2 (GeV^2) for the momentum pP(GeV) and the target nucleus (tgN,tgZ)
01082 G4double G4QPionMinusElasticCrossSection::GetQ2max(G4int PDG, G4int tgZ, G4int tgN,
01083                                                 G4double pP)
01084 {
01085   //static const G4double mNeut= G4QPDGCode(2112).GetMass()*.001; // MeV to GeV
01086   static const G4double mPi= G4QPDGCode(211).GetMass()*.001; // pion mass MeV to GeV
01087   //static const G4double mProt= G4QPDGCode(2212).GetMass()*.001; // MeV to GeV
01088   //static const G4double mLamb= G4QPDGCode(3122).GetMass()*.001; // MeV to GeV
01089   //static const G4double mHe3 = G4QPDGCode(2112).GetNuclMass(2,1,0)*.001; // MeV to GeV
01090   //static const G4double mAlph = G4QPDGCode(2112).GetNuclMass(2,2,0)*.001; // MeV to GeV
01091   //static const G4double mDeut = G4QPDGCode(2112).GetNuclMass(1,1,0)*.001; // MeV to GeV
01092   static const G4double mPi2= mPi*mPi;
01093   //static const G4double mProt2= mProt*mProt;
01094   //static const G4double mNeut2= mNeut*mNeut;
01095   //static const G4double mDeut2= mDeut*mDeut;
01096   G4double pP2=pP*pP;                                 // squared momentum of the projectile
01097   if(tgZ || tgN>-1)                                   // ---> pipA
01098   {
01099     G4double mt=G4QPDGCode(90000000+tgZ*1000+tgN).GetMass()*.001; // Target mass in GeV
01100     G4double dmt=mt+mt;
01101     G4double s_value=dmt*std::sqrt(pP2+mPi2)+mPi2+mt*mt;    // Mondelstam s
01102     return dmt*dmt*pP2/s_value;
01103   }
01104   else
01105   {
01106     // G4cout<<"*Error*G4QPionMinusElasticCrossSection::GetQ2max:PDG="<<PDG<<",Z="<<tgZ<<",N="
01107     //       <<tgN<<", while it is defined only for p projectiles & Z_target>0"<<G4endl;
01108     // throw G4QException("G4QPionMinusElasticCrossSection::GetQ2max: only pipA implemented");
01109     G4ExceptionDescription ed;
01110     ed << "PDG = " << PDG << ",Z = " << tgZ << ",N = " << tgN
01111        << ", while it is defined only for p projectiles & Z_target>0" << G4endl;
01112     G4Exception("G4QPionMinusElasticCrossSection::GetQ2max()", "HAD_CHPS_0000",
01113                 FatalException, ed);
01114     return 0;
01115   }
01116 }

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