G4StrawTubeXTRadiator.hh

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// $Id$
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///////////////////////////////////////////////////////////////////////////
// 
// Process describing a straw tube radiator of X-ray transition radiation.  
// Thicknesses of plates and gas gaps are gamma distributed.
// We suppose that:
// formation zone ~ mean thickness << absorption length
// for each material and in the range 1-100 keV. This allows us to simplify
// interference effects in radiator stack (GetStackFactor method).
// 
// 
// History:
// 22.04.05 V. Grichine, first version 
// 28.09.07, V.Ivanchenko general cleanup without change of algorithms
//
 
#ifndef G4StrawTubeXTRadiator_h
#define G4StrawTubeXTRadiator_h 1
 
#include <complex>
#include "G4VXTRenergyLoss.hh"
 
class G4SandiaTable;
 
class G4StrawTubeXTRadiator : public G4VXTRenergyLoss
{
public:
 
  G4StrawTubeXTRadiator (G4LogicalVolume* anEnvelope, G4Material*, G4Material*,
                         G4double,G4double,G4Material*,G4bool unishut = false,
                         const G4String & processName = "StrawTubeXTRadiator");
  virtual ~G4StrawTubeXTRadiator ();
 
  // Auxiliary functions for plate/gas material parameters
 
  G4double  GetMediumFormationZone(G4double,G4double,G4double) ;
  void      ComputeMediumPhotoAbsCof() ;
  G4double  GetMediumLinearPhotoAbs(G4double) ;
  G4complex GetMediumComplexFZ(G4double,G4double,G4double) ;
 
  // Pure virtual function from base class
  G4double GetStackFactor( G4double energy, G4double gamma, G4double varAngle);
 
protected:
 
  G4int      fMatIndex3;
  G4double   fSigma3;
 
  G4SandiaTable* fMediumPhotoAbsCof;
};
 
#endif