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//
// $Id$
//
// 
// ------------------------------------------------------------
//      GEANT 4 class header file
//
//      History: 
//    1st March 2007 creation by L. Desorgher based on a modification of G4Gamma 	    
//    06  Nov.  2008 modified for Geant4-09-02  by Hisaya Kurashige 
//
//-------------------------------------------------------------
//	Documentation:
//    Adjoint particles are used in Reverse/Adjoint Monte Carlo simulations. New adjoint 
//    processes act on adjoint particles when they are  tracked backward in the geometry. 
//    The use of adjoint particles instead of "normal" particles 
//    during a reverse simulation is based on an idea of M. Asai   
//
#ifndef G4AdjointGamma_h
#define G4AdjointGamma_h 1

#include "globals.hh"
#include "G4ios.hh"
#include "G4ParticleDefinition.hh"

// ######################################################################
// ###                           AdjointGAMMA                         ###
// ######################################################################

class G4AdjointGamma : public G4ParticleDefinition
{
 private:
   static G4AdjointGamma* theInstance;

 private: // hide constructor as private
   G4AdjointGamma(){}

 public:
   ~G4AdjointGamma(){}

   static G4AdjointGamma* Definition();
   static G4AdjointGamma* AdjointGammaDefinition();
   static G4AdjointGamma* AdjointGamma();
};


#endif