Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/src/G4QuadrupoleMagField.cc

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Diff markup

Differences between /geometry/magneticfield/src/G4QuadrupoleMagField.cc (Version 11.3.0) and /geometry/magneticfield/src/G4QuadrupoleMagField.cc (Version 6.1)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
  3 // * License and Disclaimer                    <<   3 // * DISCLAIMER                                                       *
  4 // *                                                4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of th <<   5 // * The following disclaimer summarizes all the specific disclaimers *
  6 // * the Geant4 Collaboration.  It is provided <<   6 // * of contributors to this software. The specific disclaimers,which *
  7 // * conditions of the Geant4 Software License <<   7 // * govern, are listed with their locations in:                      *
  8 // * LICENSE and available at  http://cern.ch/ <<   8 // *   http://cern.ch/geant4/license                                  *
  9 // * include a list of copyright holders.      << 
 10 // *                                                9 // *                                                                  *
 11 // * Neither the authors of this software syst     10 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing fin     11 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warran     12 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assum     13 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  <<  14 // * use.                                                             *
 16 // * for the full disclaimer and the limitatio << 
 17 // *                                               15 // *                                                                  *
 18 // * This  code  implementation is the result  <<  16 // * This  code  implementation is the  intellectual property  of the *
 19 // * technical work of the GEANT4 collaboratio <<  17 // * GEANT4 collaboration.                                            *
 20 // * By using,  copying,  modifying or  distri <<  18 // * By copying,  distributing  or modifying the Program (or any work *
 21 // * any work based  on the software)  you  ag <<  19 // * based  on  the Program)  you indicate  your  acceptance of  this *
 22 // * use  in  resulting  scientific  publicati <<  20 // * statement, and all its terms.                                    *
 23 // * acceptance of all terms of the Geant4 Sof << 
 24 // *******************************************     21 // ********************************************************************
 25 //                                                 22 //
 26 // G4QuadrupoleMagField implementation         << 
 27 //                                                 23 //
 28 // 03.02.1997, V.Grichine - Created            <<  24 // $Id: G4QuadrupoleMagField.cc,v 1.3 2003/10/31 14:35:55 gcosmo Exp $
 29 // 11.05.2012, B.Riese  - Allow displaced orig <<  25 // GEANT4 tag $Name: geant4-06-00-patch-01 $
                                                   >>  26 //
 30 // -------------------------------------------     27 // -------------------------------------------------------------------
 31                                                    28 
 32 #include "G4QuadrupoleMagField.hh"                 29 #include "G4QuadrupoleMagField.hh"
 33 #include "G4RotationMatrix.hh"                 << 
 34                                                << 
 35 namespace                                      << 
 36 {                                              << 
 37    G4RotationMatrix IdentityMatrix;            << 
 38 }                                              << 
 39                                                    30 
 40 G4QuadrupoleMagField::G4QuadrupoleMagField(G4d     31 G4QuadrupoleMagField::G4QuadrupoleMagField(G4double pGradient)
 41 {                                                  32 {
 42    fGradient = pGradient;                      << 
 43    fpMatrix  = &IdentityMatrix;                << 
 44 }                                              << 
 45                                                << 
 46 // ------------------------------------------- << 
 47                                                << 
 48 G4QuadrupoleMagField::G4QuadrupoleMagField(G4d << 
 49                                            con << 
 50                                            G4R << 
 51 {                                              << 
 52    fGradient = pGradient ;                         33    fGradient = pGradient ;
 53    fOrigin   = pOrigin ;                       << 
 54    fpMatrix  = pMatrix ;                       << 
 55 }                                                  34 }
 56                                                    35 
 57 // ------------------------------------------- <<  36 /////////////////////////////////////////////////////////////////////////
 58                                                    37 
 59 G4Field* G4QuadrupoleMagField::Clone() const   <<  38 G4QuadrupoleMagField::~G4QuadrupoleMagField()
 60 {                                                  39 {
 61    return new G4QuadrupoleMagField(fGradient,  << 
 62 }                                                  40 }
 63                                                    41 
 64 // ------------------------------------------- <<  42 ////////////////////////////////////////////////////////////////////////
 65                                                << 
 66 G4QuadrupoleMagField::~G4QuadrupoleMagField()  << 
 67                                                    43 
 68 // ------------------------------------------- <<  44 void G4QuadrupoleMagField::GetFieldValue( const G4double y[7],
 69                                                <<  45                                                 G4double B[3]  ) const  
 70 void G4QuadrupoleMagField::GetFieldValue( cons << 
 71                                                << 
 72 {                                                  46 {
 73   //  with displaced origin and rotation       <<  47    //   G4double fGradient = 0.001 ;   // Tesla/mm
 74                                                <<  48    B[0] = fGradient*y[1] ;
 75   G4ThreeVector r_global = G4ThreeVector(y[0]  <<  49    B[1] = fGradient*y[0] ;
 76                                          y[1]  <<  50    B[2] = 0 ;
 77                                          y[2]  << 
 78                                                << 
 79   const G4ThreeVector r_local = (*fpMatrix) *  << 
 80   const G4ThreeVector B_local( fGradient * r_l << 
 81                                fGradient * r_l << 
 82   const G4ThreeVector B_global = fpMatrix->inv << 
 83                                                << 
 84   B[0] = B_global.x();                         << 
 85   B[1] = B_global.y();                         << 
 86   B[2] = B_global.z();                         << 
 87 }                                                  51 }
 88                                                    52