[831] | 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: G4FieldTrack.cc,v 1.14 2007/10/03 15:34:42 japost Exp $ |
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[850] | 28 | // GEANT4 tag $Name: HEAD $ |
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[831] | 29 | // |
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| 30 | // ------------------------------------------------------------------- |
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| 31 | |
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| 32 | #include "G4FieldTrack.hh" |
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| 33 | |
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| 34 | std::ostream& operator<<( std::ostream& os, const G4FieldTrack& SixVec) |
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| 35 | { |
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| 36 | const G4double *SixV = SixVec.SixVector; |
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| 37 | os << " ( "; |
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| 38 | os << " X= " << SixV[0] << " " << SixV[1] << " " << SixV[2] << " "; // Position |
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| 39 | os << " V= " << SixV[3] << " " << SixV[4] << " " << SixV[5] << " "; // Momentum |
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| 40 | os << " v2= " << G4ThreeVector(SixV[3], SixV[4], SixV[5]).mag(); // mom magnitude |
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| 41 | os << " mdm= " << SixVec.fMomentumDir.mag(); |
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| 42 | os << " l= " << SixVec.GetCurveLength(); |
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| 43 | os << " ) "; |
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| 44 | return os; |
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| 45 | } |
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| 46 | |
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| 47 | G4FieldTrack::G4FieldTrack( const G4ThreeVector& pPosition, |
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| 48 | G4double LaboratoryTimeOfFlight, |
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| 49 | const G4ThreeVector& pMomentumDirection, |
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| 50 | G4double kineticEnergy, |
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| 51 | G4double restMass_c2, |
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| 52 | G4double charge, |
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| 53 | const G4ThreeVector& Spin, |
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| 54 | G4double magnetic_dipole_moment, |
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| 55 | G4double curve_length ) |
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| 56 | : fKineticEnergy(kineticEnergy), |
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| 57 | fRestMass_c2(restMass_c2), |
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| 58 | fLabTimeOfFlight(LaboratoryTimeOfFlight), |
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| 59 | // fProperTimeOfFlight(0.0), |
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| 60 | // fMomentumDir(pMomentumDirection), |
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| 61 | fChargeState( charge, magnetic_dipole_moment ) |
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| 62 | { |
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| 63 | G4double momentum = std::sqrt(kineticEnergy*kineticEnergy |
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| 64 | +2.0*restMass_c2*kineticEnergy); |
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| 65 | |
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| 66 | G4ThreeVector pMomentum= momentum * pMomentumDirection; |
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| 67 | SetCurvePnt( pPosition, pMomentum, curve_length ); |
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| 68 | // Sets momentum direction as well. |
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| 69 | |
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| 70 | // Set the momentum direction again - keeping value from argument exactly |
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| 71 | fMomentumDir=pMomentumDirection; |
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| 72 | |
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| 73 | InitialiseSpin( Spin ); |
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| 74 | |
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| 75 | // fpChargeState = new G4ChargeState( charge, magnetic_dipole_moment ); |
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| 76 | } |
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| 77 | |
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| 78 | G4FieldTrack::G4FieldTrack( const G4ThreeVector& pPosition, |
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| 79 | const G4ThreeVector& pMomentumDirection, |
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| 80 | G4double curve_length, |
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| 81 | G4double kineticEnergy, |
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| 82 | const G4double restMass_c2, |
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| 83 | G4double, // velocity |
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| 84 | G4double pLaboratoryTimeOfFlight, |
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| 85 | G4double pProperTimeOfFlight, |
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| 86 | const G4ThreeVector* pSpin) |
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| 87 | : fKineticEnergy(kineticEnergy), |
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| 88 | fRestMass_c2(restMass_c2), |
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| 89 | fLabTimeOfFlight(pLaboratoryTimeOfFlight), |
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| 90 | fProperTimeOfFlight(pProperTimeOfFlight), |
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| 91 | // fMomentumDir(pMomentumDirection), |
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| 92 | fChargeState( DBL_MAX ) // charge not set |
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| 93 | { |
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| 94 | G4double momentum = std::sqrt(kineticEnergy*kineticEnergy |
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| 95 | +2.0*restMass_c2*kineticEnergy); |
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| 96 | G4ThreeVector pMomentum= momentum * pMomentumDirection; |
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| 97 | |
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| 98 | SetCurvePnt( pPosition, pMomentum, curve_length ); |
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| 99 | // Sets momentum direction as well. |
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| 100 | |
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| 101 | // Set the momentum direction again |
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| 102 | // -- to avoid numerical issues from multiplying by momentum and dividing again |
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| 103 | fMomentumDir=pMomentumDirection; |
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| 104 | |
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| 105 | G4ThreeVector Spin(0.0, 0.0, 0.0); |
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| 106 | if( !pSpin ) Spin= G4ThreeVector(0.,0.,0.); |
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| 107 | else Spin= *pSpin; |
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| 108 | InitialiseSpin( Spin ); |
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| 109 | |
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| 110 | // fpChargeState = new G4ChargeState( DBL_MAX ); // charge not yet set !! |
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| 111 | } |
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| 112 | |
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| 113 | G4FieldTrack::G4FieldTrack( char ) // Nothing is set !! |
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| 114 | : fRestMass_c2(0.0), fLabTimeOfFlight(0.0), |
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| 115 | fChargeState( DBL_MAX ) // charge not set |
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| 116 | { |
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| 117 | G4ThreeVector Zero(0.0, 0.0, 0.0); |
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| 118 | SetCurvePnt( Zero, Zero, 0.0 ); |
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| 119 | InitialiseSpin( Zero ); |
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| 120 | // fpChargeState = new G4ChargeState( DBL_MAX ); |
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| 121 | } |
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| 122 | |
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| 123 | void G4FieldTrack:: |
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| 124 | SetChargeAndMoments(G4double charge, |
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| 125 | G4double magnetic_dipole_moment, // default= DBL_MAX - do not change |
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| 126 | G4double electric_dipole_moment, // ditto |
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| 127 | G4double magnetic_charge ) // ditto |
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| 128 | { |
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| 129 | fChargeState.SetChargeAndMoments( charge, magnetic_dipole_moment, |
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| 130 | electric_dipole_moment, magnetic_charge ); |
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| 131 | |
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| 132 | // fpChargeState->SetChargeAndMoments( charge, magnetic_dipole_moment, |
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| 133 | // electric_dipole_moment, magnetic_charge ); |
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| 134 | |
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| 135 | // TO-DO: Improve the implementation using handles |
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| 136 | // -- and handle to the old one (which can be shared by other copies) and |
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| 137 | // must not be left to hang loose |
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| 138 | // |
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| 139 | // fpChargeState= new G4ChargeState( charge, magnetic_dipole_moment, |
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| 140 | // electric_dipole_moment, magnetic_charge ); |
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| 141 | } |
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