include/Geant4/G4eplusAnnihilationEntanglementClipBoard.hh

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0025 //
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0027 //
0028 // --------------------------------------------------------------------
0029 // GEANT4 class header file
0030 //
0031 // Class Description:
0032 // A clipboard for communicating between quantum entangled photons
0033 // from e+ annihilation. Applies only to the two-gamma decay from the
0034 // JP=0- state of e+e-, para-positronium. (This is the dominant process
0035 // in materials such as human tissue, since the ortho-positronium JP=1-
0036 // state, initially more likely, is "picked off" by a near-by electron
0037 // and turned into para-positronium, because it has the much shorter
0038 // meanlife.)
0039 // Also applies to pi zero (JP=0-).
0040 //
0041 // ------------------ G4eplusAnnihilationEntanglementClipBoard ------------------
0042 //
0043 // Author: J.Allison, May 2017
0044 //
0045 // --------------------------------------------------------------------
0046
0047 // This is a concrete class based on G4VEntanglementClipBoard.  Information
0048 // specific to this type of entanglement can be posted here.  See
0049 // G4VEntanglementClipBoard.hh for more detail on how to use this class.
0050
0051 #ifndef G4eplusAnnihilationEntanglementClipBoard_hh
0052 #define G4eplusAnnihilationEntanglementClipBoard_hh
0053
0054 #include "G4VEntanglementClipBoard.hh"
0055
0056 class G4eplusAnnihilationEntanglementClipBoard
0057 : public G4VEntanglementClipBoard
0058 {
0059 public:
0060   G4eplusAnnihilationEntanglementClipBoard()
0061   : fComptonCosTheta1(0.)
0062   , fComptonPhi1(0.)
0063   {}
0064   ~G4eplusAnnihilationEntanglementClipBoard() {}
0065
0066   // Cos(theta) and phi of the first Compton scattering of the first photon
0067   void SetComptonCosTheta1(G4double cosTheta1) {fComptonCosTheta1 = cosTheta1;}
0068   void SetComptonPhi1(G4double phi1) {fComptonPhi1 = phi1;}
0069   G4double GetComptonCosTheta1() const {return fComptonCosTheta1;}
0070   G4double GetComptonPhi1() const {return fComptonPhi1;}
0071
0072 protected:
0073   // Cos(theta) and phi of the first Compton scattering of the first photon
0074   G4double fComptonCosTheta1, fComptonPhi1;
0075 };
0076
0077 #endif