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25 // 25 //
>> 26 // $Id: G4ErrorMagFieldLimitProcess.cc 66892 2013-01-17 10:57:59Z gunter $
26 // 27 //
27 // ------------------------------------------- 28 // ------------------------------------------------------------
28 // GEANT 4 class implementation file << 29 // GEANT 4 class implementation file
29 // ------------------------------------------- 30 // ------------------------------------------------------------
30 // 31 //
31 32
32 #include "G4ErrorMagFieldLimitProcess.hh" 33 #include "G4ErrorMagFieldLimitProcess.hh"
33 #include "G4ErrorMessenger.hh" 34 #include "G4ErrorMessenger.hh"
34 #include "G4TransportationManager.hh" 35 #include "G4TransportationManager.hh"
35 #include "G4FieldManager.hh" 36 #include "G4FieldManager.hh"
36 #include "G4Field.hh" 37 #include "G4Field.hh"
37 #include "G4Track.hh" 38 #include "G4Track.hh"
38 39
39 #ifdef G4VERBOSE 40 #ifdef G4VERBOSE
40 # include "G4ErrorPropagatorData.hh" << 41 #include "G4ErrorPropagatorData.hh"
41 #endif 42 #endif
42 43
43 //-------------------------------------------- 44 //------------------------------------------------------------------------
44 G4ErrorMagFieldLimitProcess::G4ErrorMagFieldLi << 45 G4ErrorMagFieldLimitProcess::
45 const G4String& processName) << 46 G4ErrorMagFieldLimitProcess(const G4String& processName)
46 : G4VErrorLimitProcess(processName) << 47 : G4VErrorLimitProcess(processName)
47 { 48 {
48 theStepLimit = kInfinity; 49 theStepLimit = kInfinity;
49 } 50 }
50 51
>> 52
51 //-------------------------------------------- 53 //------------------------------------------------------------------------
52 G4ErrorMagFieldLimitProcess::~G4ErrorMagFieldL << 54 G4ErrorMagFieldLimitProcess::~G4ErrorMagFieldLimitProcess()
>> 55 { }
>> 56
53 57
54 //-------------------------------------------- 58 //------------------------------------------------------------------------
55 G4double G4ErrorMagFieldLimitProcess::PostStep << 59 G4double G4ErrorMagFieldLimitProcess::
56 const G4Track& aTrack, G4double, G4ForceCond << 60 PostStepGetPhysicalInteractionLength( const G4Track& aTrack, G4double ,
>> 61 G4ForceCondition* condition )
57 { 62 {
58 *condition = NotForced; << 63 *condition = NotForced;
59 const G4Field* field = G4TransportationManag << 64 const G4Field* field =
60 ->GetFieldManager() << 65 G4TransportationManager::GetTransportationManager()->GetFieldManager()
61 ->GetDetectorField( << 66 ->GetDetectorField();
62 67
63 theStepLength = kInfinity; 68 theStepLength = kInfinity;
64 if(field != 0) << 69 if( field != 0 ) {
65 { <<
66 G4ThreeVector trkPosi = aTrack.GetPosition 70 G4ThreeVector trkPosi = aTrack.GetPosition();
67 G4double pos1[3]; 71 G4double pos1[3];
68 pos1[0] = trkPosi.x(); << 72 pos1[0] = trkPosi.x(); pos1[1] = trkPosi.y(); pos1[2] = trkPosi.z();
69 pos1[1] = trkPosi.y(); <<
70 pos1[2] = trkPosi.z(); <<
71 73
72 G4double h1[3]; 74 G4double h1[3];
73 field->GetFieldValue(pos1, h1); << 75 field->GetFieldValue( pos1, h1 );
74 76
75 G4ThreeVector BVec(h1[0], h1[1], h1[2]); << 77 G4ThreeVector BVec(h1[0],h1[1],h1[2]);
76 G4double pmag = aTrack.GetMomentum().m << 78 G4double pmag = aTrack.GetMomentum().mag();
77 G4double BPerpMom = BVec.cross(G4ThreeVect << 79 G4double BPerpMom = BVec.cross( G4ThreeVector(pmag,0.,0.) ).mag() / pmag;
78 80
79 theStepLength = theStepLimit * pmag / BPer << 81 theStepLength = theStepLimit * pmag / BPerpMom;
80 #ifdef G4VERBOSE 82 #ifdef G4VERBOSE
81 if(G4ErrorPropagatorData::verbose() >= 3) << 83 if(G4ErrorPropagatorData::verbose() >= 3 ) {
82 { << 84 G4cout << "G4ErrorMagFieldLimitProcess:: stepLength "
83 G4cout << "G4ErrorMagFieldLimitProcess:: << 85 << theStepLength << " B " << BPerpMom << " BVec " << BVec
84 << " B " << BPerpMom << " BVec " << 86 << " pmag " << pmag << G4endl;
85 << G4endl; << 87 }
86 } <<
87 #endif 88 #endif
88 } 89 }
89 90
90 return theStepLength; 91 return theStepLength;
91 } 92 }
92 93