Gabriele Cosmo
307 lines
12 KiB
C++
307 lines
12 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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/// \file persistency/P01/src/ExP01DetectorConstruction.cc
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/// \brief Implementation of the ExP01DetectorConstruction class
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//
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//
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "ExP01DetectorConstruction.hh"
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#include "ExP01ChamberParameterisation.hh"
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#include "ExP01DetectorMessenger.hh"
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#include "ExP01MagneticField.hh"
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#include "ExP01TrackerSD.hh"
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#include "G4Box.hh"
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#include "G4Colour.hh"
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#include "G4LogicalVolume.hh"
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#include "G4Material.hh"
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#include "G4PVParameterised.hh"
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#include "G4PVPlacement.hh"
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#include "G4SDManager.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4UserLimits.hh"
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#include "G4VisAttributes.hh"
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#include "G4ios.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ExP01DetectorConstruction::ExP01DetectorConstruction()
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: G4VUserDetectorConstruction(),
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fSolidWorld(0),
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fLogicWorld(0),
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fPhysiWorld(0),
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fSolidTarget(0),
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fLogicTarget(0),
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fPhysiTarget(0),
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fSolidTracker(0),
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fLogicTracker(0),
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fPhysiTracker(0),
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fSolidChamber(0),
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fLogicChamber(0),
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fPhysiChamber(0),
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fTargetMater(0),
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fChamberMater(0),
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fPMagField(0),
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fDetectorMessenger(0),
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fWorldLength(0.),
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fTargetLength(0.),
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fTrackerLength(0.),
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fNbOfChambers(0),
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fChamberWidth(0.),
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fChamberSpacing(0.)
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{
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fPMagField = new ExP01MagneticField();
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fDetectorMessenger = new ExP01DetectorMessenger(this);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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ExP01DetectorConstruction::~ExP01DetectorConstruction()
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{
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delete fPMagField;
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delete fDetectorMessenger;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VPhysicalVolume* ExP01DetectorConstruction::Construct()
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{
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//--------- Material definition ---------
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G4double a, z;
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G4double density, temperature, pressure;
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G4int nel;
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// Air
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G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
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G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
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G4Material* Air = new G4Material("Air", density = 1.29 * mg / cm3, nel = 2);
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Air->AddElement(N, 70 * perCent);
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Air->AddElement(O, 30 * perCent);
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// Lead
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G4Material* Pb =
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new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
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// Xenon gas
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G4Material* Xenon =
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new G4Material("XenonGas", z = 54., a = 131.29 * g / mole, density = 5.458 * mg / cm3,
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kStateGas, temperature = 293.15 * kelvin, pressure = 1 * atmosphere);
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// Print all the materials defined.
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//
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G4cout << G4endl << "The materials defined are : " << G4endl << G4endl;
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G4cout << *(G4Material::GetMaterialTable()) << G4endl;
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//--------- Sizes of the principal geometrical components (solids) ---------
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fNbOfChambers = 5;
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fChamberWidth = 20 * cm;
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fChamberSpacing = 80 * cm;
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fTrackerLength = (fNbOfChambers + 1) * fChamberSpacing; // Full length of Tracker
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fTargetLength = 5.0 * cm; // Full length of Target
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fTargetMater = Pb;
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fChamberMater = Xenon;
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fWorldLength = 1.2 * (fTargetLength + fTrackerLength);
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G4double targetSize = 0.5 * fTargetLength; // Half length of the Target
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G4double trackerSize = 0.5 * fTrackerLength; // Half length of the Tracker
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//--------- Definitions of Solids, Logical Volumes, Physical Volumes ---------
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//------------------------------
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// World
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//------------------------------
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G4double HalfWorldLength = 0.5 * fWorldLength;
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fSolidWorld = new G4Box("world", HalfWorldLength, HalfWorldLength, HalfWorldLength);
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fLogicWorld = new G4LogicalVolume(fSolidWorld, Air, "World", 0, 0, 0);
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// Must place the World Physical volume unrotated at (0,0,0).
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//
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fPhysiWorld = new G4PVPlacement(0, // no rotation
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G4ThreeVector(), // at (0,0,0)
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fLogicWorld, // its logical volume
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"World", // its name
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0, // its mother volume
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false, // no boolean operations
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0); // copy number
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//------------------------------
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// Target
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//------------------------------
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G4ThreeVector positionTarget = G4ThreeVector(0, 0, -(targetSize + trackerSize));
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fSolidTarget = new G4Box("target", targetSize, targetSize, targetSize);
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fLogicTarget = new G4LogicalVolume(fSolidTarget, fTargetMater, "Target", 0, 0, 0);
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fPhysiTarget = new G4PVPlacement(0, // no rotation
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positionTarget, // at (x,y,z)
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fLogicTarget, // its logical volume
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"Target", // its name
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fLogicWorld, // its mother volume
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false, // no boolean operations
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0); // copy number
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G4cout << "Target is " << fTargetLength / cm << " cm of " << fTargetMater->GetName() << G4endl;
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//------------------------------
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// Tracker
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//------------------------------
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G4ThreeVector positionTracker = G4ThreeVector(0, 0, 0);
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fSolidTracker = new G4Box("tracker", trackerSize, trackerSize, trackerSize);
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fLogicTracker = new G4LogicalVolume(fSolidTracker, Air, "Tracker", 0, 0, 0);
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fPhysiTracker = new G4PVPlacement(0, // no rotation
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positionTracker, // at (x,y,z)
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fLogicTracker, // its logical volume
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"Tracker", // its name
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fLogicWorld, // its mother volume
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false, // no boolean operations
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0); // copy number
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//------------------------------
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// Tracker segments
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//------------------------------
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//
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// An example of Parameterised volumes
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// dummy values for G4Box -- modified by parameterised volume
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fSolidChamber = new G4Box("chamber", 100 * cm, 100 * cm, 10 * cm);
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fLogicChamber = new G4LogicalVolume(fSolidChamber, fChamberMater, "Chamber", 0, 0, 0);
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G4double firstPosition = -trackerSize + 0.5 * fChamberWidth;
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G4double firstLength = fTrackerLength / 10;
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G4double lastLength = fTrackerLength;
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G4VPVParameterisation* chamberParam =
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new ExP01ChamberParameterisation(fNbOfChambers, // NoChambers
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firstPosition, // Z of center of first
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fChamberSpacing, // Z spacing of centers
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fChamberWidth, // Width Chamber
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firstLength, // lengthInitial
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lastLength); // lengthFinal
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// dummy value : kZAxis -- modified by parameterised volume
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//
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fPhysiChamber = new G4PVParameterised("Chamber", // their name
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fLogicChamber, // their logical volume
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fLogicTracker, // Mother logical volume
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kZAxis, // Are placed along this axis
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fNbOfChambers, // Number of chambers
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chamberParam); // The parametrisation
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G4cout << "There are " << fNbOfChambers << " chambers in the tracker region. "
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<< "The chambers are " << fChamberWidth / mm << " mm of " << fChamberMater->GetName()
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<< "\n The distance between chamber is " << fChamberSpacing / cm << " cm" << G4endl;
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//------------------------------------------------
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// Sensitive detectors
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//------------------------------------------------
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G4SDManager* SDman = G4SDManager::GetSDMpointer();
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G4String trackerChamberSDname = "ExP01/TrackerChamberSD";
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ExP01TrackerSD* aTrackerSD = new ExP01TrackerSD(trackerChamberSDname);
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SDman->AddNewDetector(aTrackerSD);
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fLogicChamber->SetSensitiveDetector(aTrackerSD);
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//--------- Visualization attributes -------------------------------
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G4VisAttributes* BoxVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
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fLogicWorld->SetVisAttributes(BoxVisAtt);
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fLogicTarget->SetVisAttributes(BoxVisAtt);
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fLogicTracker->SetVisAttributes(BoxVisAtt);
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G4VisAttributes* ChamberVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 0.0));
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fLogicChamber->SetVisAttributes(ChamberVisAtt);
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//--------- example of User Limits -------------------------------
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// below is an example of how to set tracking constraints in a given
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// logical volume(see also in N02PhysicsList how to setup the processes
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// G4StepLimiter or G4UserSpecialCuts).
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// Sets a max Step length in the tracker region, with G4StepLimiter
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//
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G4double maxStep = 0.5 * fChamberWidth;
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fLogicTracker->SetUserLimits(new G4UserLimits(maxStep));
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// Set additional contraints on the track, with G4UserSpecialCuts
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//
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// G4double maxLength = 2*fTrackerLength, maxTime = 0.1*ns, minEkin = 10*MeV;
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// logicTracker->SetUserLimits(new G4UserLimits(maxStep,maxLength,maxTime,
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// minEkin));
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return fPhysiWorld;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExP01DetectorConstruction::SetTargetMaterial(G4String materialName)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialName);
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if (pttoMaterial) {
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fTargetMater = pttoMaterial;
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fLogicTarget->SetMaterial(pttoMaterial);
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G4cout << "\n----> The target is " << fTargetLength / cm << " cm of " << materialName << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExP01DetectorConstruction::SetChamberMaterial(G4String materialName)
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{
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// search the material by its name
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G4Material* pttoMaterial = G4Material::GetMaterial(materialName);
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if (pttoMaterial) {
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fChamberMater = pttoMaterial;
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fLogicChamber->SetMaterial(pttoMaterial);
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G4cout << "\n----> The chambers are " << fChamberWidth / cm << " cm of " << materialName
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<< G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void ExP01DetectorConstruction::SetMagField(G4double fieldValue)
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{
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fPMagField->SetFieldValue(fieldValue);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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