00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id: G4Mag_EqRhs.cc 69786 2013-05-15 09:38:51Z gcosmo $ 00028 // 00029 // This is the standard right-hand side for equation of motion 00030 // in a pure Magnetic Field . 00031 // 00032 // Other that might be required are: 00033 // i) is when using a moving reference frame ... or 00034 // ii) extending for other forces, eg an electric field 00035 // 00036 // J. Apostolakis, January 13th, 1997 00037 // 00038 // -------------------------------------------------------------------- 00039 00040 #include "G4MagneticField.hh" 00041 #include "G4Mag_EqRhs.hh" 00042 #include "globals.hh" 00043 #include "G4PhysicalConstants.hh" 00044 #include "G4SystemOfUnits.hh" 00045 00046 const G4double G4Mag_EqRhs::fUnitConstant = 0.299792458 * (GeV/(tesla*m)); 00047 00048 // Constructor Implementation 00049 // 00050 G4Mag_EqRhs::G4Mag_EqRhs( G4MagneticField *magField ) 00051 : G4EquationOfMotion(magField), fCof_val(0.) 00052 { 00053 } 00054 00055 void 00056 G4Mag_EqRhs::SetChargeMomentumMass( G4double particleCharge, // e+ units 00057 G4double, // MomentumXc 00058 G4double ) // particleMass 00059 { 00060 fCof_val = particleCharge*eplus*c_light ; // B must be in Tesla 00061 // fCof_val = fUnitConstant*particleCharge/MomentumXc; // B must be in Tesla 00062 // fMass = particleMass; 00063 } 00064 00065 G4Mag_EqRhs::~G4Mag_EqRhs() { }