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25 // 25 //
26 // G4LineCurrentMagField implementation << 26 // $Id: G4LineCurrentMagField.cc 68055 2013-03-13 14:43:28Z gcosmo $
27 // <<
28 // Author: V.Grichine, 03.02.1997 <<
29 // ------------------------------------------- 27 // -------------------------------------------------------------------
30 28
31 #include "G4LineCurrentMagField.hh" 29 #include "G4LineCurrentMagField.hh"
32 #include "globals.hh" 30 #include "globals.hh"
33 31
34 G4LineCurrentMagField::G4LineCurrentMagField(G 32 G4LineCurrentMagField::G4LineCurrentMagField(G4double pFieldConstant)
35 { 33 {
36 fFieldConstant = pFieldConstant ; 34 fFieldConstant = pFieldConstant ;
37 } 35 }
38 << 36 G4LineCurrentMagField* G4LineCurrentMagField::Clone() const
39 // ------------------------------------------- <<
40 <<
41 G4Field* G4LineCurrentMagField::Clone() const <<
42 { 37 {
43 return new G4LineCurrentMagField( fFieldCon << 38 return new G4LineCurrentMagField( this->fFieldConstant );
44 } 39 }
>> 40 ////////////////////////////////////////////////////////////////////////
45 41
46 // ------------------------------------------- << 42 G4LineCurrentMagField::~G4LineCurrentMagField()
>> 43 {
>> 44 }
47 45
48 G4LineCurrentMagField::~G4LineCurrentMagField( << 46 ///////////////////////////////////////////////////////////////////////////
49 47
50 // ------------------------------------------- <<
51 48
52 void G4LineCurrentMagField::GetFieldValue(cons << 49 void G4LineCurrentMagField::GetFieldValue( const G4double yTrack[7],
53 << 50 G4double B[3] ) const
54 { 51 {
55 // G4double fFieldConstant = 100 ; 52 // G4double fFieldConstant = 100 ;
56 G4double a = 1.00 ; // mm 53 G4double a = 1.00 ; // mm
57 G4double x = a*yTrack[0], y = a*yTrack[1] ; 54 G4double x = a*yTrack[0], y = a*yTrack[1] ;
58 G4double x2 = x*x, y2 = y*y, r2 = x2 + y2 ; 55 G4double x2 = x*x, y2 = y*y, r2 = x2 + y2 ;
59 G4double r = std::sqrt(r2+a*a) ; 56 G4double r = std::sqrt(r2+a*a) ;
60 G4double Br = fFieldConstant/r; 57 G4double Br = fFieldConstant/r;
61 B[0] = -Br*y/r ; 58 B[0] = -Br*y/r ;
62 B[1] = Br*x/r ; 59 B[1] = Br*x/r ;
63 B[2] = 0.0 ; << 60 B[2] = 0 ;
64 } 61 }
65 62
66 // ------------------------------------------- 63 // -----------------------------------------------------------------
67 64