Gabriele Cosmo
130 lines
4.8 KiB
C++
130 lines
4.8 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// --------------------------------------------------------------
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// GEANT 4 - ULTRA experiment example
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// --------------------------------------------------------------
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//
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// Code developed by:
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// B. Tome, M.C. Espirito-Santo, A. Trindade, P. Rodrigues
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//
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// ****************************************************
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// * UltraFresnelLensParameterisation.cc
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// ****************************************************
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//
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// Class derived from G4VPVParameterisation and used to define a Fresnel lens geometry
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// through a parameterised replication of G4Cons volumes. These volumes are frustra
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// of cones describing the lens grooves.
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// An UltraFresnelLensParameterisation object is created in the UltraFresnelLens class
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//
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#include <cmath>
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#include "UltraFresnelLensParameterisation.hh"
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#include "UltraFresnelLens.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4ThreeVector.hh"
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#include "G4Cons.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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UltraFresnelLensParameterisation::UltraFresnelLensParameterisation(UltraFresnelLens* Lens)
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{
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FresnelLens = Lens ;
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GrooveWidth = Lens->GetGrooveWidth() ;
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NumberOfGrooves = Lens->GetNumberOfGrooves() ;
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dZOffset = Lens->GetSagita((NumberOfGrooves-0)*(GrooveWidth)) -
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Lens->GetSagita((NumberOfGrooves-1)*(GrooveWidth)) ;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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UltraFresnelLensParameterisation::~UltraFresnelLensParameterisation()
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{;}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void UltraFresnelLensParameterisation::ComputeTransformation
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(const G4int GrooveNo, G4VPhysicalVolume* physVol) const
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{
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auto Rmin1 = (GrooveNo+0)*(GrooveWidth) ;
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auto Rmax1 = (GrooveNo+1)*(GrooveWidth) ;
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auto dZ = FresnelLens->GetSagita(Rmax1) - FresnelLens->GetSagita(Rmin1) ;
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if (dZ <= 0.0){
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G4Exception("UltraFresnelLensParameterisation::ComputeTransformation()",
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"AirSh003",FatalException,
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"UltraFresnelLensParameterisation::ComputeTransformation: Groove depth<0 !");
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}
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G4ThreeVector origin(0,0,(dZ-dZOffset)/2.);
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physVol->SetTranslation(origin);
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physVol->SetRotation(0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void UltraFresnelLensParameterisation::ComputeDimensions
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(G4Cons& Groove, const G4int GrooveNo, const G4VPhysicalVolume*) const
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{
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auto Rmin1 = (GrooveNo+0)*(GrooveWidth) ;
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auto Rmax1 = (GrooveNo+1)*(GrooveWidth) ;
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auto Rmin2 = Rmin1 ;
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auto Rmax2 = Rmin2+0.0001*mm ;
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auto dZ = FresnelLens->GetSagita(Rmax1) - FresnelLens->GetSagita(Rmin1) ;
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if (dZ <= 0.0){
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G4Exception("UltraFresnelLensParameterisation::ComputeDimensions()",
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"AirSh004",FatalException,
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"UltraFresnelLensParameterisation::ComputeDimensions: Groove depth<0 !");
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}
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Groove.SetInnerRadiusMinusZ(Rmin1) ;
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Groove.SetOuterRadiusMinusZ(Rmax1) ;
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Groove.SetInnerRadiusPlusZ(Rmin2) ;
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Groove.SetOuterRadiusPlusZ(Rmax2) ;
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Groove.SetZHalfLength(dZ/2.) ;
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#ifdef ULTRA_VERBOSE
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G4cout << "UltraFresnelLensParameterisation: GrooveNo " << GrooveNo+1 <<
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" Rmin1, Rmax1(mm): " << Rmin1/mm <<" "<< Rmax1/mm << " dZ(mm) " << dZ/mm << G4endl ;
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#endif
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}
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