Import Geant4 11.0.0 source tree
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Gabriele Cosmo
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Ben Morgan
Ben Morgan
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//
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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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#ifndef PAR04DETECTORCONSTRUCTION_H
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#define PAR04DETECTORCONSTRUCTION_H
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#include <CLHEP/Units/SystemOfUnits.h> // for cm, mm, pi, rad
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#include <G4String.hh> // for G4String
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#include <G4Types.hh> // for G4double, G4bool, G4int
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#include <array> // for array
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#include <cstddef> // for size_t
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#include <vector> // for vector
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#include "G4Material.hh" // for G4Material
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#include "G4SystemOfUnits.hh" // for cm, mm, rad
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#include "G4ThreeVector.hh" // for G4ThreeVector
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#include "G4VUserDetectorConstruction.hh" // for G4VUserDetectorConstruction
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class G4LogicalVolume;
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class G4VPhysicalVolume;
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class Par04DetectorMessenger;
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/**
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* @brief Detector construction.
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*
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* Creates a cylindrical detector, with cylinder axis along Z-axis. It is placed
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* in the centre of the world volume.
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* Dimensions of the detector (inner radius and its length) as well as composition (number of
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* radial layers, number of absorbers, its thicknesses and materials) can be set using the UI
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* commands. There may be up to two absorbers used to build the layers.
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*
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* TODO Extend to allow use of more than two different absorbers.
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*
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* Each absorber may have differnt thickness (along radial direction), material, and may be
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* either sensitive to particle passage (will register deposited energy) or not (passive).
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* Readout geometry of the detector is dynamic, and its size can be set by UI commands.
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* Cells are created along z-axis, azimuthal angle, and radius (cylindrical
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* segmentation). The z axis is parallel to the direction of the particle entering the
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* detector volume. The mesh also starts at the entrance to the detector volume.
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* In order to define this enrance position and direction, a fast simulation model is used.
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* For the detector volume, if particle has entered, sets the particle direction and position
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* in the event information. Those vectors define the readout mesh for the event.
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*
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* TODO In order to speed up the simulation, fast simulation that checks for the entrance
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* properites should be defined in a very thin region instead of a whole region of the detector.
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*
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* Sensitive detector Par04SensitiveDetector is attached to the detector volume
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* Region for the detector is created as an envelope of the fast simulation.
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*
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*/
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class Par04DetectorConstruction : public G4VUserDetectorConstruction
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{
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public:
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Par04DetectorConstruction();
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virtual ~Par04DetectorConstruction();
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virtual G4VPhysicalVolume* Construct() final;
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virtual void ConstructSDandField() final;
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/// Set inner radius of the cylindrical detector
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void SetInnerRadius(G4double aInnerRadius);
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/// Get inner radius of the cylindrical detector
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inline G4double GetInnerRadius() const { return fDetectorInnerRadius; };
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/// Set length radius of the cylindrical detector
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void SetLength(G4double aLength);
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/// Get length of the cylindrical detector (along z-axis)
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inline G4double GetLength() const { return fDetectorLength; };
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/// Set number of layers
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inline void SetNbOfLayers(G4int aNumber) { fNbOfLayers = aNumber; };
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/// Get number of layers
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inline G4int GetNbOfLayers() const { return fNbOfLayers; };
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/// Set material of the layer (from NIST materials)
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void SetAbsorberMaterial(const std::size_t aLayer, const G4String& aMaterial);
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/// Get name of the material of the layer
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inline G4String GetAbsorberMaterial(const std::size_t aLayer) const
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{
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return fAbsorberMaterial[aLayer]->GetName();
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};
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/// Set thickness of the layer
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void SetAbsorberThickness(const std::size_t aLayer, const G4double aThickness);
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/// Get thickness of the layer
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inline G4double GetAbsorberThickness(const std::size_t aLayer) const
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{
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return fAbsorberThickness[aLayer];
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};
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/// Set sensitivity of the layer
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void SetAbsorberSensitivity(const std::size_t aLayer, const G4bool aSensitivity);
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/// Get sensitivity of the layer
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inline G4bool GetAbsorberSensitivity(const std::size_t aLayer) const
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{
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return fAbsorberSensitivity[aLayer];
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};
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/// Set number of Mesh cells in cylindrical coordinates (r, phi, z)
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inline void SetMeshNbOfCells(G4ThreeVector aNb) { fMeshNbOfCells = aNb; };
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/// Set number of Mesh cells in cylindrical coordinates along one of the axis
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/// @param[in] aIndex index of cylindrical axis (0,1,2) = (r, phi, z)
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inline void SetMeshNbOfCells(std::size_t aIndex, G4double aNb) { fMeshNbOfCells[aIndex] = aNb; };
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/// Get number of Mesh cells in cylindrical coordinates (r, phi, z)
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inline G4ThreeVector GetMeshNbOfCells() const { return fMeshNbOfCells; };
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/// Set size of Mesh cells in cylindrical coordinates (r, phi, z)
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inline void SetMeshSizeOfCells(G4ThreeVector aNb) { fMeshSizeOfCells = aNb; };
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/// Set size of Mesh cells in cylindrical coordinates along one of the axis
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/// @param[in] aIndex index of cylindrical axis (0,1,2) = (r, phi, z)
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inline void SetMeshSizeOfCells(std::size_t aIndex, G4double aNb) { fMeshSizeOfCells[aIndex] = aNb; };
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/// Get size of Mesh cells in cylindrical coordinates (r, phi, z)
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inline G4ThreeVector GetMeshSizeOfCells() const { return fMeshSizeOfCells; };
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/// Print detector information
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void Print() const;
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private:
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/// Messenger that allows to modify geometry
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Par04DetectorMessenger* fDetectorMessenger = nullptr;
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/// Inner radius of the cylindrical detector
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G4double fDetectorInnerRadius = 80 * cm;
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/// Length of the cylindrical detector (along z axis)
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G4double fDetectorLength = 24 * cm;
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/// Logical volume(s) of the sensitive absorbers
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std::vector<G4LogicalVolume*> fLayerLogical;
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/// Material(s) of the layers
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std::array<G4Material*, 2> fAbsorberMaterial = { nullptr, nullptr };
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/// Thickness(es) of the layers
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std::array<G4double, 2> fAbsorberThickness = { 1 * cm, 0 };
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/// Sensitivity of the layers
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std::array<G4bool, 2> fAbsorberSensitivity = { true, 0 };
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/// Number of layers = slices along z axis
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G4int fNbOfLayers = 24;
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/// Mesh number of cells (Nr, Nphi, Nz)
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G4ThreeVector fMeshNbOfCells = { 40, 50, 48 };
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/// Mesh size of cells (dr, dphi, dz).
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G4ThreeVector fMeshSizeOfCells = { 5 * mm, 2 * CLHEP::pi / 50 * CLHEP::rad, 5 * mm };
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};
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#endif /* PAR04DETECTORCONSTRUCTION_H */
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