Import Geant4 3.0.0 source tree

2016-06-08 15:55:53 +02:00
parent e7d7193284
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+// This code implementation is the intellectual property of
+// the GEANT4 collaboration.
+//
+// By copying, distributing or modifying the Program (or any work
+// based on the Program) you indicate your acceptance of this statement,
+// and all its terms.
+//
+// $Id: G4FoamXrayTRmodel.cc,v 1.1 2000/11/14 16:07:37 gcosmo Exp $
+// GEANT4 tag $Name: geant4-03-00 $
+//
+
+#include "g4std/complex"
+
+#include "G4FoamXrayTRmodel.hh"
+#include "Randomize.hh"
+
+#include "G4Gamma.hh"
+
+////////////////////////////////////////////////////////////////////////////
+//
+// Constructor, destructor
+
+G4FoamXrayTRmodel::G4FoamXrayTRmodel(G4Envelope *anEnvelope, 
+                                                  G4double a, G4double b) :
+  G4VXrayTRmodel(anEnvelope,a,b)
+{
+  G4cout<<"Foam X-ray TR radiator model is called"<<G4endl ;
+
+  // Build energy and angular integral spectra of X-ray TR photons from
+  // a radiator
+
+    BuildTable() ;
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+G4FoamXrayTRmodel::~G4FoamXrayTRmodel()
+{
+  ;
+}
+
+
+
+///////////////////////////////////////////////////////////////////////////
+//
+// Rough approximation for radiator interference factor for the case of
+// fully Foam radiator. The plate and gas gap thicknesses are distributed 
+// according to exponent. The mean values of the plate and gas gap thicknesses 
+// are supposed to be about XTR formation zones but much less than 
+// mean absorption length of XTR photons in coresponding material.
+
+G4double 
+G4FoamXrayTRmodel::GetStackFactor( G4double energy, 
+                                   G4double gamma, G4double varAngle )
+{
+  G4double result, Qa, Qb, Q, Za, Zb, Ma, Mb ;
+  
+  Za = GetPlateFormationZone(energy,gamma,varAngle) ;
+  Zb = GetGasFormationZone(energy,gamma,varAngle) ;
+
+  Ma = GetPlateLinearPhotoAbs(energy) ;
+  Mb = GetGasLinearPhotoAbs(energy) ;
+
+  Qa = 1.0/( 1.0 + fPlateThick*Ma ) ;
+  Qb = 1.0/( 1.0 + fGasThick*Mb ) ;
+  Q  = Qa*Qb ;
+
+  G4complex Ca(1.0+0.5*fPlateThick*Ma,fPlateThick/Za) ; 
+  G4complex Cb(1.0+0.5*fGasThick*Mb,fGasThick/Zb) ; 
+
+  G4complex Ha = 1.0/Ca ;  
+  G4complex Hb = 1.0/Cb ;
+  G4complex H  = Ha*Hb ;
+
+  G4complex F1 = ( 0.5*(1+Qa)*(1.0+H) - Ha - Qa*Hb )/(1.0-H) ;
+
+  G4complex F2 = (1.0-Ha)*(Qa-Ha)*Hb/(1.0-H)/(Q-H) ;
+
+  F2          *= pow(Q,G4double(fPlateNumber)) - G4std::pow(H,fPlateNumber) ;
+
+  result      = ( 1 - pow(Q,G4double(fPlateNumber)) )/( 1 - Q ) ;
+
+  result     *= 2.0*G4std::real(F1) ;
+
+  result     += 2.0*G4std::real(F2) ;
+
+  return      result ;
+}
+
+
+//
+//
+////////////////////////////////////////////////////////////////////////////
+
+
+
+
+
+
+
+