[1316] | 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 | // |
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| 27 | // $Id: Shoot.hh,v 1.9 2006/06/29 18:15:29 gunter Exp $ |
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[1347] | 28 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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[1316] | 29 | // |
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| 30 | #ifndef SHOOT_HH |
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| 31 | #define SHOOT_HH |
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| 32 | |
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| 33 | #include "G4Timer.hh" |
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| 34 | #include "G4VPhysicalVolume.hh" |
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| 35 | #include "G4Navigator.hh" |
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| 36 | #include "G4ThreeVector.hh" |
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| 37 | #include "G4ios.hh" |
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| 38 | |
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| 39 | void Shoot(const G4int numShoot, |
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| 40 | G4VPhysicalVolume *pTopNode, |
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| 41 | const G4ThreeVector& pSource, |
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| 42 | const G4ThreeVector& pVec) |
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| 43 | { |
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| 44 | G4double physStep=kInfinity; |
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| 45 | G4int i; |
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| 46 | G4double safety; |
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| 47 | G4double Step; |
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| 48 | G4Navigator myNav; |
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| 49 | G4Timer timer; |
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| 50 | G4ThreeVector partLoc; |
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| 51 | G4VPhysicalVolume *located=0; |
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| 52 | |
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| 53 | myNav.SetWorldVolume(pTopNode); |
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| 54 | |
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| 55 | timer.Start(); |
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| 56 | |
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| 57 | for (i=numShoot;i>0;i--) |
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| 58 | { |
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| 59 | // G4cout << "#Loop " << i << G4endl ; |
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| 60 | |
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| 61 | partLoc=pSource; |
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| 62 | located=myNav.LocateGlobalPointAndSetup(partLoc,0,false,true); |
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| 63 | while (located) |
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| 64 | { |
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| 65 | /* |
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| 66 | G4cout << "Loc = " << partLoc << " Vec = " << pVec << G4endl ; |
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| 67 | G4cout << "Safety = " << safety << G4endl ; |
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| 68 | */ |
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| 69 | Step=myNav.ComputeStep(partLoc,pVec,physStep,safety); |
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| 70 | |
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| 71 | partLoc+=Step*pVec; |
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| 72 | myNav.SetGeometricallyLimitedStep(); |
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| 73 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
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| 74 | }; |
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| 75 | } |
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| 76 | timer.Stop(); |
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| 77 | // G4cout << "Shots = " << numShoot << " " << timer << G4endl; |
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| 78 | } |
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| 79 | |
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| 80 | #include "G4TransportationManager.hh" |
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| 81 | #include "G4MagneticField.hh" |
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| 82 | #include "G4UniformMagField.hh" |
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| 83 | #include "G4ChordFinder.hh" |
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| 84 | #include "G4PropagatorInField.hh" |
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| 85 | #include "G4FieldManager.hh" |
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| 86 | #include "G4HelixExplicitEuler.hh" |
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| 87 | #include "G4HelixSimpleRunge.hh" |
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| 88 | #include "G4HelixImplicitEuler.hh" |
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| 89 | #include "G4ExplicitEuler.hh" |
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| 90 | #include "G4ImplicitEuler.hh" |
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| 91 | #include "G4SimpleRunge.hh" |
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| 92 | #include "G4SimpleHeum.hh" |
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| 93 | #include "G4ClassicalRK4.hh" |
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| 94 | #include "G4Mag_UsualEqRhs.hh" |
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| 95 | #include "G4CashKarpRKF45.hh" |
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| 96 | #include "G4RKG3_Stepper.hh" |
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| 97 | |
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| 98 | void MagneticShoot(const G4int numShoot, |
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| 99 | G4VPhysicalVolume *pTopNode, |
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| 100 | const G4ThreeVector& pSource, |
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| 101 | const G4ThreeVector& pVec, |
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| 102 | const G4double fieldValue, // ** already in tesla ** |
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| 103 | const G4double DeltaChord) // ** already in mm ** |
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| 104 | { |
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| 105 | /** Setting up the Magnetic field **/ |
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| 106 | |
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| 107 | G4UniformMagField magField (0.,0.,fieldValue); |
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| 108 | G4Navigator *myNav = G4TransportationManager:: |
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| 109 | GetTransportationManager()-> GetNavigatorForTracking(); |
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| 110 | myNav->SetWorldVolume(pTopNode); |
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| 111 | |
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| 112 | G4double momentum = 0.05*proton_mass_c2; |
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| 113 | G4double kineticEnergy = momentum*momentum / |
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| 114 | (std::sqrt(momentum*momentum+proton_mass_c2*proton_mass_c2)+proton_mass_c2); |
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| 115 | G4double velocity = momentum / (proton_mass_c2+kineticEnergy); |
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| 116 | G4double labTof= 10.*ns; |
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| 117 | G4double properTof= 0.1*ns; |
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| 118 | |
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| 119 | /* Field Properties */ |
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| 120 | |
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| 121 | G4Mag_UsualEqRhs *fEquation = new G4Mag_UsualEqRhs(&magField); |
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| 122 | |
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| 123 | /* Choose your stepper here */ |
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| 124 | /* G4ClassicalRK4 is the default one */ |
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| 125 | G4MagIntegratorStepper* pStepper = new G4ClassicalRK4( fEquation ); |
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| 126 | |
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| 127 | /* |
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| 128 | pStepper = new G4ExplicitEuler( fEquation ); |
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| 129 | pStepper = new G4ImplicitEuler( fEquation ); |
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| 130 | pStepper = new G4SimpleRunge( fEquation ); |
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| 131 | pStepper = new G4SimpleHeum( fEquation ); |
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| 132 | pStepper = new G4ClassicalRK4( fEquation ); |
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| 133 | pStepper = new G4HelixExplicitEuler( fEquation ); |
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| 134 | pStepper = new G4HelixImplicitEuler( fEquation ); |
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| 135 | pStepper = new G4HelixSimpleRunge( fEquation ); |
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| 136 | pStepper = new G4RKG3_Stepper( fEquation ); |
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| 137 | */ |
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| 138 | |
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| 139 | G4FieldManager* pFieldMgr = G4TransportationManager:: |
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| 140 | GetTransportationManager()->GetFieldManager(); |
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| 141 | pFieldMgr->SetDetectorField( &magField ); |
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| 142 | |
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| 143 | G4ChordFinder* pChordFinder = new G4ChordFinder( &magField,DeltaChord,pStepper); |
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| 144 | pFieldMgr->SetChordFinder( pChordFinder ); |
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| 145 | |
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| 146 | G4PropagatorInField *pMagFieldPropagator= G4TransportationManager:: |
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| 147 | GetTransportationManager()-> GetPropagatorInField (); |
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| 148 | |
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| 149 | pChordFinder->SetChargeMomentumMass(1., // charge in e+ units |
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| 150 | momentum, // Momentum in Mev/c ? |
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| 151 | proton_mass_c2 ); |
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| 152 | G4Timer timer; |
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| 153 | timer.Start(); |
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| 154 | |
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| 155 | for (G4int i=numShoot;i>0;i--) |
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| 156 | { |
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| 157 | G4VPhysicalVolume *located; |
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| 158 | G4ThreeVector Vec = pVec ; |
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| 159 | G4ThreeVector partLoc = pSource ; |
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| 160 | /* |
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| 161 | G4cout << "#Loop " << i << G4endl ; |
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| 162 | G4cout << "Loc = " << partLoc << " Vec = " << Vec << G4endl << G4endl ; |
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| 163 | */ |
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| 164 | momentum = (0.5+i*0.1) * proton_mass_c2; |
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| 165 | kineticEnergy = momentum*momentum / |
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| 166 | (std::sqrt(momentum*momentum+proton_mass_c2*proton_mass_c2)+proton_mass_c2); |
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| 167 | velocity = momentum / (proton_mass_c2+kineticEnergy); |
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| 168 | |
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| 169 | pFieldMgr->GetChordFinder() |
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| 170 | ->SetChargeMomentumMass(1, // charge in e+ units |
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| 171 | momentum, // Momentum in Mev/c |
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| 172 | proton_mass_c2); // Mass |
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| 173 | |
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| 174 | located=myNav->LocateGlobalPointAndSetup(partLoc); |
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| 175 | while (located) |
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| 176 | { |
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| 177 | G4double physStep= kInfinity; // 2.5*mm ; |
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| 178 | G4double safety = 1.0*m; |
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| 179 | G4double Step = 0.0*m; |
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| 180 | /* |
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| 181 | G4cout << "Loc = " << partLoc << " Vec = " << Vec << G4endl ; |
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| 182 | G4cout << "Safety = " << safety << G4endl ; |
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| 183 | */ |
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| 184 | |
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| 185 | G4FieldTrack initTrack(partLoc,pVec,0.,kineticEnergy, |
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| 186 | proton_mass_c2,velocity,labTof,properTof,0); |
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| 187 | Step=pMagFieldPropagator->ComputeStep(initTrack,physStep,safety); |
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| 188 | |
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| 189 | myNav->SetGeometricallyLimitedStep(); |
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| 190 | |
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| 191 | partLoc = pMagFieldPropagator->EndPosition(); |
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| 192 | Vec = pMagFieldPropagator->EndMomentumDir(); |
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| 193 | |
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| 194 | located=myNav->LocateGlobalPointAndSetup(partLoc); |
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| 195 | }; |
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| 196 | } |
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| 197 | timer.Stop(); |
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| 198 | // G4cout << "Shots = " << numShoot << " " << timer << G4endl; |
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| 199 | } |
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| 200 | |
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| 201 | |
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| 202 | void ShootVerbose(G4VPhysicalVolume *pTopNode, |
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| 203 | const G4ThreeVector& pSource, |
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| 204 | const G4ThreeVector& pVec) |
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| 205 | { |
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| 206 | const G4double physStep=kInfinity; |
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| 207 | G4double safety,Step; |
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| 208 | G4Navigator myNav; |
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| 209 | G4ThreeVector partLoc; |
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| 210 | G4VPhysicalVolume *located=0; |
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| 211 | |
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| 212 | myNav.SetWorldVolume(pTopNode); |
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| 213 | |
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| 214 | partLoc=pSource; |
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| 215 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
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| 216 | while (located) |
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| 217 | { |
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| 218 | Step=myNav.ComputeStep(partLoc,pVec,physStep,safety); |
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| 219 | G4cout << "Physical Location=" << located->GetName() |
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| 220 | << " #" << located->GetCopyNo() << G4endl |
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| 221 | << " Step=" << Step << " Safety=" << safety |
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| 222 | << " ---->" << G4endl; |
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| 223 | |
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| 224 | partLoc+=Step*pVec; |
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| 225 | myNav.SetGeometricallyLimitedStep(); |
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| 226 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
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| 227 | }; |
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| 228 | } |
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| 229 | |
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| 230 | #endif |
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| 231 | |
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