| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | #include "ExN05ParallelWorldForPion.hh"
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| 27 | #include "G4Box.hh"
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| 28 | #include "G4LogicalVolume.hh"
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| 29 | #include "G4Region.hh"
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| 30 | #include "G4PVPlacement.hh"
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| 31 | #include "G4ThreeVector.hh"
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| 32 | #include "ExN05PionShowerModel.hh"
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| 33 |
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| 34 |
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| 35 | ExN05ParallelWorldForPion::ExN05ParallelWorldForPion(G4String worldName)
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| 36 | : G4VUserParallelWorld(worldName)
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| 37 | {;}
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| 38 |
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| 39 | ExN05ParallelWorldForPion::~ExN05ParallelWorldForPion()
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| 40 | {;}
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| 41 |
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| 42 | void ExN05ParallelWorldForPion::Construct()
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| 43 | {
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| 44 | // -- fake material:
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| 45 | G4double a, iz, density;
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| 46 | G4String name, symbol;
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| 47 | G4int nel;
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| 48 | a = 14.01*g/mole;
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| 49 | G4Element* elN = new G4Element(name="Nitrogen", symbol="N", iz=7., a);
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| 50 | a = 16.00*g/mole;
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| 51 | G4Element* elO = new G4Element(name="Oxigen", symbol="O", iz=8., a);
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| 52 | density = 1.29e-03*g/cm3;
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| 53 | G4Material* Air = new G4Material(name="Air", density, nel=2);
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| 54 | Air->AddElement(elN, .7);
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| 55 | Air->AddElement(elO, .3);
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| 56 |
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| 57 | // -------------------------------
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| 58 | // Build parallel/ghost geometry:
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| 59 | // -------------------------------
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| 60 |
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| 61 | // -- Obtain clone of mass geometry world from GetWorld() base class utility:
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| 62 | G4VPhysicalVolume* ghostWorld = GetWorld();
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| 63 | // -- Why needed ? No default ?
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| 64 | ghostWorld->GetLogicalVolume()->SetMaterial(Air);
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| 65 | G4Region* parallelWorldRegion = new G4Region("ParallelWorldRegion");
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| 66 | parallelWorldRegion->AddRootLogicalVolume(ghostWorld->GetLogicalVolume());
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| 67 |
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| 68 | // -- Create box for encompassing Elec.+Had. calorimeters together:
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| 69 | G4double detectSize = 125*cm;
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| 70 | G4Box *ghostBox
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| 71 | = new G4Box("GhostBox", detectSize+5*cm, detectSize+5*cm, 80*cm);
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| 72 | // -- Build the subsequent logical volume:
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| 73 | G4LogicalVolume* ghostLogical
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| 74 | = new G4LogicalVolume(ghostBox,
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| 75 | Air, // -- no material : IMPOSSIBLE !!!
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| 76 | "GhostLogical",
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| 77 | 0, 0, 0);
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| 78 | // -- And place this logical volume in the parallel geometry:
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| 79 | new G4PVPlacement(0,G4ThreeVector(0., 0., 175*cm),
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| 80 | "GhostPhysical",
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| 81 | ghostLogical,
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| 82 | ghostWorld,false,0);
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| 83 |
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| 84 | // -----------------------
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| 85 | // Setup fast simulation:
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| 86 | // -----------------------
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| 87 |
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| 88 | // -- Make Elec+Had logical volume becoming a region:
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| 89 | G4cout << "Declaring region..." << G4endl;
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| 90 | G4Region* ghostRegion = new G4Region("GhostCalorimeterRegion");
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| 91 | G4cout << "... region declared. Setting it the ghostLogical volume..." << G4endl;
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| 92 | ghostRegion->AddRootLogicalVolume(ghostLogical);
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| 93 | G4cout << "... succes.\n" << G4endl;
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| 94 |
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| 95 | // // -- Create fast simulation manager, which will handle the physics fast simulation model(s):
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| 96 | // new G4FastSimulationManager(ghostRegion);
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| 97 |
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| 98 | // -- Attach fast simulation model (create the G4FastSimulationManager if needed):
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| 99 | new ExN05PionShowerModel("ghostPionShowerModel",ghostRegion);
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| 100 |
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| 101 | }
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