G4PSCellFluxForCylinder3D.cc

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//
// $Id$
// GEANT4 tag $Name: geant4-09-04 $
//
// G4PSCellFluxForCylinder3D
#include "G4PSCellFluxForCylinder3D.hh"
#include "G4PhysicalConstants.hh"
#include "G4SystemOfUnits.hh"

// (Description)
//   This is a primitive scorer class for 3D scoring cell flux.
//   The Cell Flux is defined by  a sum of track length divided
//   by the geometry volume, where all of the tracks in the geometry
//   are taken into account. e.g. the unit of Cell Flux is mm/mm3.
//
//
//   If you want to score only tracks passing through the geometry volume,
//  please use G4PSPassageCellFlux3D.
//
//
// Created: 2007-08-14  Tsukasa ASO
// 2010-07-22   Introduce Unit specification.
// 2011-03-24   Give Size and Segmentation for relicated volume in cylinder. 
// 

G4PSCellFluxForCylinder3D::G4PSCellFluxForCylinder3D(G4String name,
                               G4int ni, G4int nj, G4int nk,
                               G4int depi, G4int depj, G4int depk)
  :G4PSCellFlux3D(name,ni,nj,nk,depi,depj,depk)
{
  nSegment[0] = nSegment[1] = nSegment[2] = 0;
}

G4PSCellFluxForCylinder3D::G4PSCellFluxForCylinder3D(G4String name,const G4String& unit,
                               G4int ni, G4int nj, G4int nk,
                               G4int depi, G4int depj, G4int depk)
  :G4PSCellFlux3D(name,unit,ni,nj,nk,depi,depj,depk)
{
  nSegment[0] = nSegment[1] = nSegment[2] = 0;
}

G4PSCellFluxForCylinder3D::~G4PSCellFluxForCylinder3D()
{;}

void G4PSCellFluxForCylinder3D::SetCylinderSize(G4double dr, G4double dz){
  cylinderSize.setX(dz);        //Z Phi R
  cylinderSize.setY(twopi);     //Z Phi R
  cylinderSize.setZ(dr);        //Z Phi R
}
void G4PSCellFluxForCylinder3D::SetNumberOfSegments(G4int nSeg[3]){
  nSegment[0] = nSeg[0];  // Z
  nSegment[1] = nSeg[1];  // Phi
  nSegment[2] = nSeg[2];  // R
}

G4double G4PSCellFluxForCylinder3D::ComputeVolume(G4Step*, G4int idx){
  G4double r0 = (cylinderSize[2]/nSegment[2])*(idx);
  G4double r1 = (cylinderSize[2]/nSegment[2])*(idx+1);
  G4double dRArea = (r1*r1-r0*r0)*pi;

  // cylinderSize is given in Half Size
  G4double fullz      = cylinderSize[0]/nSegment[0]*2.;  
  G4double phiRatio  = 1./nSegment[1];
  G4double v = dRArea*fullz*phiRatio;

  if ( verboseLevel > 9 ){
    G4cout << " r0= " <<r0/cm <<"  r1= " << r1/cm<<" fullz="<<fullz/cm<<G4endl;
    G4cout << " idx= " <<idx <<"  v(cm3)= " << v/cm3<<G4endl;
  }

  return v;
}

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