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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // >> 26 // $Id: G4ErrorMagFieldLimitProcess.cc,v 1.2 2007/05/29 14:41:35 gcosmo Exp $ >> 27 // GEANT4 tag $Name: geant4-09-02 $ 26 // 28 // 27 // ------------------------------------------- 29 // ------------------------------------------------------------ 28 // GEANT 4 class implementation file << 30 // GEANT 4 class implementation file 29 // ------------------------------------------- 31 // ------------------------------------------------------------ 30 // 32 // 31 33 32 #include "G4ErrorMagFieldLimitProcess.hh" 34 #include "G4ErrorMagFieldLimitProcess.hh" 33 #include "G4ErrorMessenger.hh" 35 #include "G4ErrorMessenger.hh" 34 #include "G4TransportationManager.hh" 36 #include "G4TransportationManager.hh" 35 #include "G4FieldManager.hh" 37 #include "G4FieldManager.hh" 36 #include "G4Field.hh" 38 #include "G4Field.hh" 37 #include "G4Track.hh" 39 #include "G4Track.hh" 38 40 39 #ifdef G4VERBOSE 41 #ifdef G4VERBOSE 40 # include "G4ErrorPropagatorData.hh" << 42 #include "G4ErrorPropagatorData.hh" 41 #endif 43 #endif 42 44 43 //-------------------------------------------- 45 //------------------------------------------------------------------------ 44 G4ErrorMagFieldLimitProcess::G4ErrorMagFieldLi << 46 G4ErrorMagFieldLimitProcess:: 45 const G4String& processName) << 47 G4ErrorMagFieldLimitProcess(const G4String& processName) 46 : G4VErrorLimitProcess(processName) << 48 : G4VErrorLimitProcess(processName) 47 { 49 { 48 theStepLimit = kInfinity; 50 theStepLimit = kInfinity; 49 } 51 } 50 52 >> 53 51 //-------------------------------------------- 54 //------------------------------------------------------------------------ 52 G4ErrorMagFieldLimitProcess::~G4ErrorMagFieldL << 55 G4ErrorMagFieldLimitProcess::~G4ErrorMagFieldLimitProcess() >> 56 { } >> 57 53 58 54 //-------------------------------------------- 59 //------------------------------------------------------------------------ 55 G4double G4ErrorMagFieldLimitProcess::PostStep << 60 G4double G4ErrorMagFieldLimitProcess:: 56 const G4Track& aTrack, G4double, G4ForceCond << 61 PostStepGetPhysicalInteractionLength( const G4Track& aTrack, G4double , >> 62 G4ForceCondition* condition ) 57 { 63 { 58 *condition = NotForced; << 64 *condition = NotForced; 59 const G4Field* field = G4TransportationManag << 65 const G4Field* field = 60 ->GetFieldManager() << 66 G4TransportationManager::GetTransportationManager()->GetFieldManager() 61 ->GetDetectorField( << 67 ->GetDetectorField(); 62 68 63 theStepLength = kInfinity; 69 theStepLength = kInfinity; 64 if(field != 0) << 70 if( field != 0 ) { 65 { << 66 G4ThreeVector trkPosi = aTrack.GetPosition 71 G4ThreeVector trkPosi = aTrack.GetPosition(); 67 G4double pos1[3]; 72 G4double pos1[3]; 68 pos1[0] = trkPosi.x(); << 73 pos1[0] = trkPosi.x(); pos1[1] = trkPosi.y(); pos1[2] = trkPosi.z(); 69 pos1[1] = trkPosi.y(); << 70 pos1[2] = trkPosi.z(); << 71 74 72 G4double h1[3]; 75 G4double h1[3]; 73 field->GetFieldValue(pos1, h1); << 76 field->GetFieldValue( pos1, h1 ); 74 77 75 G4ThreeVector BVec(h1[0], h1[1], h1[2]); << 78 G4ThreeVector BVec(h1[0],h1[1],h1[2]); 76 G4double pmag = aTrack.GetMomentum().m << 79 G4double pmag = aTrack.GetMomentum().mag(); 77 G4double BPerpMom = BVec.cross(G4ThreeVect << 80 G4double BPerpMom = BVec.cross( pmag ).mag() / pmag; 78 81 79 theStepLength = theStepLimit * pmag / BPer << 82 theStepLength = theStepLimit * pmag / BPerpMom; 80 #ifdef G4VERBOSE 83 #ifdef G4VERBOSE 81 if(G4ErrorPropagatorData::verbose() >= 3) << 84 if(G4ErrorPropagatorData::verbose() >= 3 ) { 82 { << 85 G4cout << "G4ErrorMagFieldLimitProcess:: stepLength " 83 G4cout << "G4ErrorMagFieldLimitProcess:: << 86 << theStepLength << " B " << BPerpMom << " BVec " << BVec 84 << " B " << BPerpMom << " BVec " << 87 << " pmag " << pmag << G4endl; 85 << G4endl; << 88 } 86 } << 87 #endif 89 #endif 88 } 90 } 89 91 90 return theStepLength; 92 return theStepLength; 91 } 93 } 92 94