Geant4  10.02.p01
F05Field.cc
Go to the documentation of this file.
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 // $Id: F05Field.cc 75672 2013-11-05 08:47:41Z gcosmo $
27 //
30 //
31 
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34 
35 #include "F05Field.hh"
36 
37 #include "G4SystemOfUnits.hh"
38 
39 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
40 
42 {
43 }
44 
45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
46 
48 {
49 }
50 
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52 
53 void F05Field::GetFieldValue( const G4double Point[4], G4double* Bfield ) const
54 {
55  // Point[0],Point[1],Point[2] are x-, y-, z-cordinates, Point[3] is time
56 
57  const G4double Bz = 0.24*tesla;
58  const G4double Er = 2.113987E+6*volt/m;
59 
60  G4double Ex,Ey;
61 
62  G4double posR = std::sqrt(std::pow(Point[0],2) + std::pow(Point[1],2));
63  G4double cos_theta, sin_theta;
64 
65  if (posR>0){
66  cos_theta = Point[0]/(G4double)posR;
67  sin_theta = Point[1]/(G4double)posR;
68  Ex = -1*Er*cos_theta;//apply radial electric field
69  Ey = -1*Er*sin_theta;
70  }else{
71  Ex=0;
72  Ey=0;
73  }
74 
75  Bfield[0]=0;
76  Bfield[1]=0;
77  Bfield[2]=Bz;
78 
79  Bfield[3]=Ex;
80  Bfield[4]=Ey;
81  Bfield[5]=0;
82 
83  return;
84 }
static const double volt
Definition: G4SIunits.hh:241
virtual void GetFieldValue(const G4double Point[4], G4double *Bfield) const
GetFieldValue() returns the field value at a given point[]. field is really field[6]: Bx...
Definition: F05Field.cc:53
virtual ~F05Field()
Definition: F05Field.cc:47
Definition of the F05Field class.
static const double m
Definition: G4SIunits.hh:128
static const double tesla
Definition: G4SIunits.hh:265
double G4double
Definition: G4Types.hh:76
F05Field()
Definition: F05Field.cc:41