include/Geant4/G4ChannelingFastSimCrystalData.hh

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0025 //
0026 // Author:      Alexei Sytov
0027 // Co-author:   Gianfranco Paternò (modifications & testing)
0028
0029 #ifndef G4ChannelingFastSimCrystalData_h
0030 #define G4ChannelingFastSimCrystalData_h 1
0031
0032
0033 #include "globals.hh"
0034 #include "G4ios.hh"
0035 #include "G4ThreeVector.hh"
0036 #include "G4Material.hh"
0037 #include "G4VChannelingFastSimCrystalData.hh"
0038
0039
0040 /** \file G4ChannelingFastSimCrystalData.hh
0041 * \brief Definition of the G4ChannelingFastSimCrystalData class
0042 * The class inherits G4VChannelingFastSimCrystalData containing the data and properties
0043 * related to the crystal lattice.
0044 * The functions related to the crystal geometry (transformation of coordinates and angles
0045 * from the reference system of the bounding box of the local volume to
0046 * the crystal lattice co-rotating reference system and vice versa) and
0047 * initialization function SetMaterialProperties are compiled in this class.
0048 */
0049
0050 class G4ChannelingFastSimCrystalData  : public G4VChannelingFastSimCrystalData
0051 {
0052 public:
0053
0054     G4ChannelingFastSimCrystalData() = default;
0055     ~G4ChannelingFastSimCrystalData() = default;
0056
0057     ///find and upload crystal lattice input files, calculate all the basic values
0058     ///(to do only once)
0059     void SetMaterialProperties(const G4Material* crystal,
0060                                const G4String &lattice,
0061                                const G4String &filePath);
0062
0063     ///calculate the coordinates in the co-rotating reference system
0064     ///within a channel (periodic cell)
0065     ///(connected with crystal planes/axes either bent or straight)
0066     G4ThreeVector CoordinatesFromBoxToLattice(const G4ThreeVector &pos0);
0067
0068     ///calculate the coordinates in the Box reference system
0069     ///(connected with the bounding box of the volume)
0070     G4ThreeVector CoordinatesFromLatticeToBox(const G4ThreeVector &pos);
0071
0072     ///change the channel if necessary, recalculate x o y
0073     G4ThreeVector ChannelChange(G4double &x, G4double &y, G4double &z);
0074
0075     ///calculate the horizontal angle in the co-rotating reference system
0076     ///within a channel (periodic cell)
0077     ///(connected with crystal planes/axes either bent or straight)
0078     G4double AngleXFromBoxToLattice(G4double tx, G4double z)
0079     {return tx-AngleXShift(z)-GetCUtetax(z);}
0080
0081     ///calculate the horizontal angle in the Box reference system
0082     ///(connected with the bounding box of the volume)
0083     G4double AngleXFromLatticeToBox(G4double tx, G4double z)
0084     {return tx+AngleXShift(z)+GetCUtetax(z);}
0085
0086     ///auxialiary function to transform the horizontal angle
0087     G4double AngleXShift(G4double z){return fMiscutAngle + z*fCurv;}
0088
0089     ///get channel width in x and y
0090     G4double GetChannelWidthX(){return fDx;}
0091     G4double GetChannelWidthY(){return fDy;}
0092
0093 private:
0094
0095     ///variables
0096     G4int fNsteps=353;//number of steps per channeling oscillation
0097     G4double fR0=1.1*CLHEP::fermi;//*A^(1/3) - radius of nucleus
0098
0099     ///Values related to coordinate transformation
0100     long long int fNChannelx=0;//horizontal number of channel
0101                              //(either straight of bent) inside the box
0102     long long int fNChannely=0;//vertical number of channel (either straight of bent)
0103                              //inside the box; =0 in the case of planes
0104
0105     ///values related to the crystal lattice
0106     G4int fNpointsx=0,fNpointsy=0;// number of horizontal and vertical nodes of
0107                                   // interpolation
0108     G4double fDx=0, fDy=0;// channel (periodic cell)
0109                       //horizontal and vertical dimensions
0110
0111     ///fundamental constants of material
0112     std::vector <G4double> fN0; // nuclear concentration
0113     std::vector <G4double> fU1; // amplitude of thermal oscillations
0114     std::vector <G4double> fZ1;//atomic number of each element
0115     std::vector <G4double> fAN; //atomic mass of each element
0116 };
0117
0118 #endif