Import Geant4 10.4.0 source tree

2017-12-08 12:52:30 +01:00
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+//
+// ********************************************************************
+// * 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: $
+//
+// ----------------------------------------------------------------------------
+//
+// GEANT4 Class header file
+//
+// File name:     G4GSPWACorrections
+//
+// Author:        Mihaly Novak
+//
+// Creation date: 17.10.2017
+//
+// Modifications:
+//
+// Class description: class to describe and store correction factors to the
+//   integrated quantities of G4GoudsmitSaundersonMscModel (screening parameter,
+//   first and second moments) derived by using accurate Dirac-PWA based
+//   integrated quantities.
+//
+// ----------------------------------------------------------------------------
+
+#ifndef G4GSPWACorrections_h
+#define G4GSPWACorrections_h 1
+
+#include <CLHEP/Units/SystemOfUnits.h>
+
+#include "globals.hh"
+
+#include <vector>
+#include <string>
+#include <sstream>
+
+class G4Material;
+class G4Element;
+
+
+class G4GSPWACorrections {
+public:
+  G4GSPWACorrections(G4bool iselectron=true);
+
+ ~G4GSPWACorrections();
+
+  void     Initialise();
+
+  void     GetPWACorrectionFactors(G4double logekin, G4double beta2, G4int matindx,
+                                   G4double &corToScr, G4double &corToQ1, G4double &corToG2PerG1);
+private:
+  void     InitDataPerElement();
+
+  void     InitDataPerMaterials();
+
+  void     LoadDataElement(const G4Element*);
+
+  void     InitDataMaterial(const G4Material*);
+
+  void     ClearDataPerElement();
+
+  void     ClearDataPerMaterial();
+
+  // either per material or per Z
+  struct DataPerMaterial {
+    std::vector<G4double>   fCorScreening;    // correction factor to Moliere screening parameter
+    std::vector<G4double>   fCorFirstMoment;  // correction factor to first moment
+    std::vector<G4double>   fCorSecondMoment; // correction factor to second
+  };
+
+
+// data members
+private:
+  G4bool   fIsElectron;
+  static constexpr G4int     gMaxZet    = 98;                 // max. Z for which correction data were computed (98)
+  static constexpr G4int     gNumEkin   = 31;                 // number of kinetic energy grid points for Mott correction
+  static constexpr G4int     gNumBeta2  = 16;                 // \beta^2 values between [fMinBeta2-fMaxBeta2]
+  static constexpr G4double  gMinEkin   =   1.*CLHEP::keV;    // minimum kinetic energy value
+  static constexpr G4double  gMidEkin   = 100.*CLHEP::keV;    // kinetic energy at the border of the E_{kin}-\beta^2 grids
+  static constexpr G4double  gMaxBeta2  =   0.9999;           // maximum \beta^2 value
+  //
+  G4double                   fMaxEkin;        // from max fMaxBeta2 = 0.9999 (~50.5889 [MeV])
+  G4double                   fLogMinEkin;     // \ln[fMinEkin]
+  G4double                   fInvLogDelEkin;  // 1/[\ln(fMidEkin/fMinEkin)/(fNumEkin-fNumBeta2)]
+  G4double                   fMinBeta2;       // <= E_{kin}=100 [keV] (~0.300546)
+  G4double                   fInvDelBeta2;    // 1/[(fMaxBeta2-fMinBeta2)/(fNumBeta2-1)]
+  //
+  static const std::string   gElemSymbols[];
+  //
+  std::vector<DataPerMaterial*>  fDataPerElement;   // size will be gMaxZet+1; won't be null only at used Z indices
+  std::vector<DataPerMaterial*>  fDataPerMaterial;  // size will #materials; won't be null only at used mat. indices
+
+};
+
+#endif