G4ChipsProtonElasticXS.hh

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00027 // GEANT4 tag $Name: not supported by cvs2svn $
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00029 //
00030 // GEANT4 physics class: G4ChipsProtonElasticXS -- header file
00031 // M.V. Kossov, ITEP(Moscow), 24-OCT-01
00032 // The last update: M.V. Kossov, CERN/ITEP (Moscow) 12-Jan-2010 (from G4QElCrSect)
00033 //
00034 // -------------------------------------------------------------------------------
00035 // Short description: Interaction cross-sections for the elastic process. 
00036 // Class extracted from CHIPS and integrated in Geant4 by W.Pokorski
00037 // -------------------------------------------------------------------------------
00038 
00039 #ifndef G4ChipsProtonElasticXS_h
00040 #define G4ChipsProtonElasticXS_h 1
00041 
00042 #include <vector>
00043 #include "Randomize.hh"
00044 #include "G4VCrossSectionDataSet.hh"
00045 
00046 class G4ChipsProtonElasticXS : public G4VCrossSectionDataSet
00047 {
00048 public:
00049 
00050   G4ChipsProtonElasticXS();               // Constructor
00051 
00052   ~G4ChipsProtonElasticXS();
00053 
00054   static const char* Default_Name() {return "ChipsProtonElasticXS";}
00055 
00056   virtual G4bool IsIsoApplicable(const G4DynamicParticle* Pt, G4int Z, G4int A,    
00057                                  const G4Element* elm,
00058                                  const G4Material* mat );
00059 
00060   // At present momentum (pMom) in MeV/c, CS in mb (@@ Units)
00061   virtual G4double GetIsoCrossSection(const G4DynamicParticle*, G4int tgZ, G4int A,  
00062                                       const G4Isotope* iso = 0,
00063                                       const G4Element* elm = 0,
00064                                       const G4Material* mat = 0);
00065 
00066   virtual G4double GetChipsCrossSection(G4double momentum, G4int Z, G4int N, G4int pdg);
00067 
00068   G4double GetExchangeT(G4int tZ, G4int tN, G4int pPDG); // Randomizes -t=Q2 (in IU=MeV^2)
00069   G4double GetHMaxT();                   // Currrent Max(-t=Q2)/2. (in IU=MeV^2)
00070 
00071 private:
00072 
00073   G4double CalculateCrossSection(G4bool CS, G4int F, G4int I, G4int pPDG, G4int Z, G4int N,
00074                                                                               G4double pP);
00075   G4double GetSlope(G4int tZ, G4int tN, G4int pPDG);     // Slope of the 1st diff. maximum
00076 
00077   G4double GetPTables(G4double lpP, G4double lPm, G4int PDG, G4int tZ, G4int tN); // newLP
00078   G4double GetTabValues(G4double lp, G4int pPDG, G4int tgZ, G4int tgN); // return CS(Si/Bi)
00079   G4double GetQ2max(G4int pPDG, G4int tgZ, G4int tgN, G4double pP); // return -t=Q2
00080 
00081 // Body
00082 private:
00083   // --- Data formating AMDB (define the precalculated table structure) ---
00084    const G4int nPoints;// #of points in the AMDB tables     
00085    const G4int nLast;  // the Last element in the table
00086    G4double    lPMin;  // Min tabulated logarithmic Momentum  
00087    G4double    lPMax;  // Max tabulated logarithmic Momentum  
00088    G4double    dlnP;   // Log step in the table     
00089   // ---- Local (for particular pP, pPDG, tZ, tN) -----
00090    G4bool    onlyCS;   // flag to calculate only CS (not S1/B1,S2/B2,S3/B3)
00091    G4double  lastSIG;  // Last calculated cross section
00092    G4double  lastLP;   // Last log(mom_of_the_incident_hadron in GeV)
00093    G4double  lastTM;   // Last t_maximum                       
00094    G4int     lastN;    // The last N of calculated nucleus
00095    G4int     lastZ;    // The last Z of calculated nucleus
00096    G4double  lastP;    // Last used in the cross section Momentum
00097    G4double  lastTH;   // Last value of the Momentum Threshold
00098    G4double  lastCS;   // Last value of the Cross Section
00099    G4int     lastI;    // The last position in the DAMDB
00100    G4double  theSS;    // The Last squared slope of first diffruction 
00101    G4double  theS1;    // The Last mantissa of first diffruction 
00102    G4double  theB1;    // The Last slope of first diffruction    
00103    G4double  theS2;    // The Last mantissa of second diffruction
00104    G4double  theB2;    // The Last slope of second diffruction   
00105    G4double  theS3;    // The Last mantissa of third diffruction 
00106    G4double  theB3;    // The Last slope of third diffruction    
00107    G4double  theS4;    // The Last mantissa of 4-th diffruction 
00108    G4double  theB4;    // The Last slope of 4-th diffruction    
00109   // ---- Global (AMBD of P-dependent tables for pPDG,tZ,tN) -----
00110    G4int     lastTZ;   // Last atomic number of the target
00111    G4int     lastTN;   // Last number of neutrons of the target
00112    G4double  lastPIN;  // Last initialized max momentum
00113    G4double* lastCST;  // Last cross-section table
00114    G4double* lastPAR;  // Last parameters for functional calculation
00115    G4double* lastSST;  // E-dep of squared slope of the first difruction 
00116    G4double* lastS1T;  // E-dep of mantissa of the first difruction 
00117    G4double* lastB1T;  // E-dep of the slope of the first difruction
00118    G4double* lastS2T;  // E-dep of mantissa of the second difruction
00119    G4double* lastB2T;  // E-dep of the slope of theSecond difruction
00120    G4double* lastS3T;  // E-dep of mantissa of the third difruction 
00121    G4double* lastB3T;  // E-dep of the slope of the third difruction
00122    G4double* lastS4T;  // E-dep of mantissa of the 4-th difruction 
00123    G4double* lastB4T;  // E-dep of the slope of the 4-th difruction
00124 
00125    std::vector <G4double*> PAR;   // Vector of parameters for functional calculations
00126    std::vector <G4double*> CST;   // Vector of cross-section table
00127    std::vector <G4double*> SST;   // Vector of the first squared slope
00128    std::vector <G4double*> S1T;   // Vector of the first mantissa
00129    std::vector <G4double*> B1T;   // Vector of the first slope
00130    std::vector <G4double*> S2T;   // Vector of the secon mantissa
00131    std::vector <G4double*> B2T;   // Vector of the second slope
00132    std::vector <G4double*> S3T;   // Vector of the third mantissa
00133    std::vector <G4double*> B3T;   // Vector of the third slope
00134    std::vector <G4double*> S4T;   // Vector of the 4-th mantissa (gloria)
00135    std::vector <G4double*> B4T;   // Vector of the 4-th slope    (gloria)
00136  };
00137 #endif

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