[815] | 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 | // $Id: G4ErrorSurfaceTrajState.cc,v 1.6 2007/06/21 15:04:08 gunter Exp $ |
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[850] | 27 | // GEANT4 tag $Name: HEAD $ |
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[815] | 28 | // |
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| 29 | // ------------------------------------------------------------ |
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| 30 | // GEANT 4 class implementation file |
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| 31 | // ------------------------------------------------------------ |
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| 32 | // |
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| 33 | |
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| 34 | #include "G4ErrorSurfaceTrajState.hh" |
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| 35 | #include "G4ErrorPropagatorData.hh" |
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| 36 | |
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| 37 | #include "G4Field.hh" |
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| 38 | #include "G4FieldManager.hh" |
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| 39 | #include "G4TransportationManager.hh" |
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| 40 | |
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| 41 | #include "G4ErrorMatrix.hh" |
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| 42 | |
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| 43 | #include <iomanip> |
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| 44 | |
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| 45 | |
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| 46 | //------------------------------------------------------------------------ |
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| 47 | G4ErrorSurfaceTrajState:: |
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| 48 | G4ErrorSurfaceTrajState( const G4String& partType, const G4Point3D& pos, |
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| 49 | const G4Vector3D& mom, const G4Vector3D& vecU, |
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| 50 | const G4Vector3D& vecV, const G4ErrorTrajErr& errmat) |
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| 51 | : G4ErrorTrajState( partType, pos, mom, errmat ) |
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| 52 | { |
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| 53 | Init(); |
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| 54 | fTrajParam = G4ErrorSurfaceTrajParam( pos, mom, vecU, vecV ); |
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| 55 | } |
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| 56 | |
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| 57 | |
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| 58 | //------------------------------------------------------------------------ |
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| 59 | G4ErrorSurfaceTrajState:: |
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| 60 | G4ErrorSurfaceTrajState( const G4String& partType, const G4Point3D& pos, |
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| 61 | const G4Vector3D& mom, const G4Plane3D& plane, |
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| 62 | const G4ErrorTrajErr& errmat ) |
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| 63 | : G4ErrorTrajState( partType, pos, mom, errmat ) |
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| 64 | { |
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| 65 | Init(); |
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| 66 | fTrajParam = G4ErrorSurfaceTrajParam( pos, mom, plane ); |
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| 67 | |
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| 68 | } |
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| 69 | |
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| 70 | |
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| 71 | //------------------------------------------------------------------------ |
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| 72 | G4ErrorSurfaceTrajState:: |
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| 73 | G4ErrorSurfaceTrajState( G4ErrorFreeTrajState& tpSC, const G4Plane3D& plane ) |
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| 74 | : G4ErrorTrajState( tpSC.GetParticleType(), tpSC.GetPosition(), |
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| 75 | tpSC.GetMomentum() ) |
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| 76 | { |
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| 77 | // fParticleType = tpSC.GetParticleType(); |
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| 78 | // fPosition = tpSC.GetPosition(); |
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| 79 | // fMomentum = tpSC.GetMomentum(); |
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| 80 | fTrajParam = G4ErrorSurfaceTrajParam( fPosition, fMomentum, plane ); |
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| 81 | Init(); |
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| 82 | |
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| 83 | //----- Get the error matrix in SC coordinates |
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| 84 | BuildErrorMatrix( tpSC, GetVectorV(), GetVectorW() ); |
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| 85 | } |
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| 86 | |
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| 87 | |
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| 88 | //------------------------------------------------------------------------ |
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| 89 | G4ErrorSurfaceTrajState:: |
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| 90 | G4ErrorSurfaceTrajState( G4ErrorFreeTrajState& tpSC, const G4Vector3D& vecU, |
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| 91 | const G4Vector3D& vecV ) |
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| 92 | : G4ErrorTrajState( tpSC.GetParticleType(), tpSC.GetPosition(), |
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| 93 | tpSC.GetMomentum() ) |
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| 94 | { |
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| 95 | fTrajParam = G4ErrorSurfaceTrajParam( fPosition, fMomentum, vecU, vecV ); |
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| 96 | theTSType = G4eTS_OS; |
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| 97 | //----- Get the error matrix in SC coordinates |
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| 98 | BuildErrorMatrix( tpSC, vecU, vecV ); |
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| 99 | } |
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| 100 | |
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| 101 | |
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| 102 | //------------------------------------------------------------------------ |
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| 103 | void G4ErrorSurfaceTrajState:: |
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| 104 | BuildErrorMatrix( G4ErrorFreeTrajState& tpSC, const G4Vector3D&, |
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| 105 | const G4Vector3D& ) |
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| 106 | { |
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| 107 | G4double sclambda = tpSC.GetParameters().GetLambda(); |
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| 108 | G4double scphi = tpSC.GetParameters().GetPhi(); |
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| 109 | if( G4ErrorPropagatorData::GetErrorPropagatorData()->GetMode() == G4ErrorMode_PropBackwards ){ |
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| 110 | sclambda *= -1; |
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| 111 | scphi += CLHEP::pi; |
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| 112 | } |
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| 113 | G4double cosLambda = std::cos( sclambda ); |
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| 114 | G4double sinLambda = std::sin( sclambda ); |
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| 115 | G4double sinPhi = std::sin( scphi ); |
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| 116 | G4double cosPhi = std::cos( scphi ); |
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| 117 | |
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| 118 | #ifdef G4EVERBOSE |
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| 119 | if( iverbose >= 4) G4cout << " PM " << fMomentum.mag() << " pLambda " << sclambda << " pPhi " << scphi << G4endl; |
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| 120 | #endif |
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| 121 | |
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| 122 | G4ThreeVector vTN( cosLambda*cosPhi, cosLambda*sinPhi,sinLambda ); |
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| 123 | G4ThreeVector vUN( -sinPhi, cosPhi, 0. ); |
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| 124 | G4ThreeVector vVN( -vTN.z()*vUN.y(),vTN.z()*vUN.x(), cosLambda ); |
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| 125 | |
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| 126 | #ifdef G4EVERBOSE |
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| 127 | if( iverbose >= 4) G4cout << " SC2SD: vTN " << vTN << " vUN " << vUN << " vVN " << vVN << G4endl; |
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| 128 | #endif |
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| 129 | G4double UJ = vUN*GetVectorV(); |
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| 130 | G4double UK = vUN*GetVectorW(); |
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| 131 | G4double VJ = vVN*GetVectorV(); |
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| 132 | G4double VK = vVN*GetVectorW(); |
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| 133 | |
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| 134 | |
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| 135 | //--- Get transformation first |
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| 136 | G4ErrorMatrix transfM(5, 5, 0 ); |
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| 137 | //--- Get magnetic field |
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| 138 | const G4Field* field = G4TransportationManager::GetTransportationManager()->GetFieldManager()->GetDetectorField(); |
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| 139 | |
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| 140 | G4Vector3D vectorU = GetVectorV().cross( GetVectorW() ); |
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| 141 | |
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| 142 | #ifdef G4EVERBOSE |
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| 143 | if( iverbose >= 4) G4cout << "vectors " << vectorU << " " << GetVectorV() << " " << GetVectorW() << G4endl; |
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| 144 | #endif |
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| 145 | G4double T1R = 1. / ( vTN * vectorU ); |
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| 146 | |
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| 147 | if( fCharge != 0 && field ) { |
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| 148 | G4double pos[3]; pos[0] = fPosition.x()*cm; pos[1] = fPosition.y()*cm; pos[2] = fPosition.z()*cm; |
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| 149 | G4double Hd[3]; |
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| 150 | field->GetFieldValue( pos, Hd ); |
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| 151 | G4ThreeVector H = G4ThreeVector( Hd[0], Hd[1], Hd[2] ) / tesla *10.; //in kilogauus |
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| 152 | G4double magH = H.mag(); |
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| 153 | G4double invP = 1./(fMomentum.mag()/GeV); |
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| 154 | G4double magHM = magH * invP; |
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| 155 | if( magH != 0. ) { |
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| 156 | G4double magHM2 = fCharge / magH; |
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| 157 | G4double Q = -magHM * c_light/ (km/ns); |
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| 158 | #ifdef G4EVERBOSE |
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| 159 | if( iverbose >= 4) G4cout << GeV << " Q " << Q << " magHM " << magHM << " c_light/(km/ns) " << c_light/(km/ns) << G4endl; |
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| 160 | #endif |
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| 161 | |
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| 162 | G4double sinz = -H*vUN * magHM2; |
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| 163 | G4double cosz = H*vVN * magHM2; |
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| 164 | G4double T3R = Q * std::pow(T1R,3); |
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| 165 | G4double UI = vUN * vectorU; |
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| 166 | G4double VI = vVN * vectorU; |
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| 167 | #ifdef G4EVERBOSE |
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| 168 | if( iverbose >= 4) { |
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| 169 | G4cout << " T1R " << T1R << " T3R " << T3R << G4endl; |
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| 170 | G4cout << " UI " << UI << " VI " << VI << " vectorU " << vectorU << G4endl; |
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| 171 | G4cout << " UJ " << UJ << " VJ " << VJ << G4endl; |
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| 172 | G4cout << " UK " << UK << " VK " << VK << G4endl; |
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| 173 | } |
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| 174 | #endif |
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| 175 | |
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| 176 | transfM[1][3] = -UI*( VK*cosz-UK*sinz)*T3R; |
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| 177 | transfM[1][4] = -VI*( VK*cosz-UK*sinz)*T3R; |
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| 178 | transfM[2][3] = UI*( VJ*cosz-UJ*sinz)*T3R; |
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| 179 | transfM[2][4] = VI*( VJ*cosz-UJ*sinz)*T3R; |
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| 180 | } |
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| 181 | } |
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| 182 | |
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| 183 | G4double T2R = T1R * T1R; |
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| 184 | transfM[0][0] = 1.; |
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| 185 | transfM[1][1] = -UK*T2R; |
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| 186 | transfM[1][2] = VK*cosLambda*T2R; |
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| 187 | transfM[2][1] = UJ*T2R; |
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| 188 | transfM[2][2] = -VJ*cosLambda*T2R; |
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| 189 | transfM[3][3] = VK*T1R; |
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| 190 | transfM[3][4] = -UK*T1R; |
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| 191 | transfM[4][3] = -VJ*T1R; |
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| 192 | transfM[4][4] = UJ*T1R; |
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| 193 | |
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| 194 | #ifdef G4EVERBOSE |
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| 195 | if( iverbose >= 4) G4cout << " SC2SD transf matrix A= " << transfM << G4endl; |
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| 196 | #endif |
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| 197 | fError = G4ErrorTrajErr( tpSC.GetError().similarity( transfM ) ); |
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| 198 | |
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| 199 | #ifdef G4EVERBOSE |
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| 200 | if( iverbose >= 1) G4cout << "G4EP: error matrix SC2SD " << fError << G4endl; |
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| 201 | if( iverbose >= 4) G4cout << "G4ErrorSurfaceTrajState from SC " << *this << G4endl; |
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| 202 | #endif |
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| 203 | |
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| 204 | } |
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| 205 | |
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| 206 | |
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| 207 | //------------------------------------------------------------------------ |
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| 208 | void G4ErrorSurfaceTrajState::Init() |
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| 209 | { |
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| 210 | theTSType = G4eTS_OS; |
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| 211 | BuildCharge(); |
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| 212 | } |
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| 213 | |
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| 214 | |
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| 215 | //------------------------------------------------------------------------ |
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| 216 | void G4ErrorSurfaceTrajState::Dump( std::ostream& out ) const |
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| 217 | { |
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| 218 | out << *this; |
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| 219 | } |
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| 220 | |
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| 221 | |
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| 222 | //------------------------------------------------------------------------ |
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| 223 | std::ostream& operator<<(std::ostream& out, const G4ErrorSurfaceTrajState& ts) |
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| 224 | { |
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| 225 | out.setf(std::ios::fixed,std::ios::floatfield); |
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| 226 | |
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| 227 | ts.DumpPosMomError( out ); |
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| 228 | |
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| 229 | out << " G4ErrorSurfaceTrajState: Params: " << ts.fTrajParam << G4endl; |
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| 230 | return out; |
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| 231 | } |
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