1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: testProPerpSpin.cc,v 1.17 2006/06/29 18:25:02 gunter Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | // |
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32 | // Started from testG4Navigator1.cc,v 1.7 1996/08/29 15:42 pkent |
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33 | // Locate & Step within simple boxlike geometry, both |
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34 | // with and without voxels. Parameterised volumes are included. |
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35 | |
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36 | #include <assert.h> |
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37 | // #include "ApproxEqual.hh" |
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38 | |
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39 | // Global defs |
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40 | #include "globals.hh" |
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41 | |
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42 | #include "G4Navigator.hh" |
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43 | |
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44 | #include "G4LogicalVolume.hh" |
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45 | #include "G4VPhysicalVolume.hh" |
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46 | #include "G4PVPlacement.hh" |
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47 | #include "G4PVParameterised.hh" |
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48 | #include "G4VPVParameterisation.hh" |
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49 | #include "G4Box.hh" |
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50 | |
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51 | #include "G4GeometryManager.hh" |
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52 | |
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53 | #include "G4RotationMatrix.hh" |
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54 | #include "G4ThreeVector.hh" |
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55 | |
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56 | #include "G4UniformMagField.hh" |
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57 | |
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58 | #include "G4ios.hh" |
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59 | #include <iomanip> |
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60 | |
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61 | // Sample Parameterisation |
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62 | class G4LinScale : public G4VPVParameterisation |
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63 | { |
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64 | virtual void ComputeTransformation(const G4int n, |
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65 | G4VPhysicalVolume* pRep) const |
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66 | { |
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67 | pRep->SetTranslation(G4ThreeVector(0,(n-1)*15,0)); |
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68 | } |
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69 | |
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70 | virtual void ComputeDimensions(G4Box &pBox, |
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71 | const G4int n, |
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72 | const G4VPhysicalVolume* ) const |
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73 | { |
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74 | pBox.SetXHalfLength(10); |
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75 | pBox.SetYHalfLength(5+n); |
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76 | pBox.SetZHalfLength(5+n); |
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77 | } |
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78 | |
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79 | virtual void ComputeDimensions(G4Tubs &, |
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80 | const G4int , |
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81 | const G4VPhysicalVolume*) const {} |
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82 | virtual void ComputeDimensions(G4Trd &, |
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83 | const G4int, |
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84 | const G4VPhysicalVolume*) const {} |
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85 | virtual void ComputeDimensions(G4Cons &, |
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86 | const G4int , |
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87 | const G4VPhysicalVolume*) const {} |
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88 | virtual void ComputeDimensions(G4Trap &, |
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89 | const G4int , |
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90 | const G4VPhysicalVolume*) const {} |
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91 | virtual void ComputeDimensions(G4Hype &, |
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92 | const G4int , |
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93 | const G4VPhysicalVolume*) const {} |
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94 | virtual void ComputeDimensions(G4Orb &, |
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95 | const G4int , |
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96 | const G4VPhysicalVolume*) const {} |
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97 | virtual void ComputeDimensions(G4Sphere &, |
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98 | const G4int , |
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99 | const G4VPhysicalVolume*) const {} |
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100 | virtual void ComputeDimensions(G4Torus &, |
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101 | const G4int , |
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102 | const G4VPhysicalVolume*) const {} |
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103 | virtual void ComputeDimensions(G4Para &, |
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104 | const G4int , |
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105 | const G4VPhysicalVolume*) const {} |
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106 | virtual void ComputeDimensions(G4Polycone &, |
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107 | const G4int , |
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108 | const G4VPhysicalVolume*) const {} |
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109 | virtual void ComputeDimensions(G4Polyhedra &, |
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110 | const G4int , |
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111 | const G4VPhysicalVolume*) const {} |
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112 | }; |
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113 | G4LinScale myParam; |
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114 | |
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115 | // Build simple geometry: |
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116 | // 4 small cubes + 1 slab (all G4Boxes) are positioned inside a larger cuboid |
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117 | G4VPhysicalVolume* BuildGeometry() |
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118 | { |
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119 | |
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120 | G4Box *myHugeBox= new G4Box("huge box",15*m,15*m,25*m); |
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121 | G4Box *myBigBox= new G4Box("big cube",10*m,10*m,10*m); |
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122 | G4Box *mySmallBox= new G4Box("smaller cube",2.5*m,2.5*m,2.5*m); |
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123 | G4Box *myTinyBox= new G4Box("tiny cube",.25*m,.25*m,.25*m); |
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124 | |
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125 | // World Volume |
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126 | // |
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127 | G4LogicalVolume *worldLog=new G4LogicalVolume(myHugeBox,0, |
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128 | "World",0,0,0); |
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129 | // Logical with no material,field, |
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130 | // sensitive detector or user limits |
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131 | |
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132 | G4PVPlacement *worldPhys=new |
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133 | G4PVPlacement(0,G4ThreeVector(0,0,0), "World",worldLog, |
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134 | 0,false,0); |
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135 | // Note: no mother pointer set |
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136 | |
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137 | // Create the logical Volumes |
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138 | // |
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139 | // G4LogicalVolume(*pSolid, *pMaterial, Name, *pField, *pSDetector, *pULimits) |
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140 | // |
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141 | G4LogicalVolume *BigBoxLog=new G4LogicalVolume(myBigBox,0, |
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142 | "Crystal Box (large)",0,0,0); |
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143 | G4LogicalVolume *smallBoxLog=new G4LogicalVolume(mySmallBox,0, |
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144 | "Crystal Box (small)"); |
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145 | G4LogicalVolume *tinyBoxLog=new G4LogicalVolume(myTinyBox,0, |
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146 | "Crystal Box (tiny)"); |
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147 | |
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148 | |
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149 | // Place them. |
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150 | // |
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151 | // 1) Two big boxes in the world volume |
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152 | // |
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153 | // G4PVPlacement *BigTg1Phys= |
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154 | new G4PVPlacement(0,G4ThreeVector(0,0,-15*m), |
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155 | "Big Target 1",BigBoxLog, |
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156 | worldPhys,false,0); |
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157 | // G4PVPlacement *BigTg2Phys= |
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158 | new G4PVPlacement(0,G4ThreeVector(0,0, 15*m), |
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159 | "Big Target 2",BigBoxLog, |
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160 | worldPhys,false,0); |
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161 | |
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162 | // 2) Four (medium) boxes in X & Y near the origin of the world volume |
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163 | // |
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164 | // G4PVPlacement *MedTg3a_Phys= |
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165 | new G4PVPlacement(0,G4ThreeVector(0, 7.5*m,0), |
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166 | "Target 3a",smallBoxLog, |
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167 | worldPhys,false,0); |
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168 | // G4PVPlacement *MedTg3b_Phys= |
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169 | new G4PVPlacement(0,G4ThreeVector(0,-7.5*m,0), |
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170 | "Target 3b",smallBoxLog, |
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171 | worldPhys,false,0); |
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172 | // G4PVPlacement *MedTg3c_Phys= |
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173 | new G4PVPlacement(0,G4ThreeVector(-7.5*m,0,0), |
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174 | "Target 3c",smallBoxLog, |
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175 | worldPhys,false,0); |
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176 | // G4PVPlacement *MedTg3d_Phys= |
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177 | new G4PVPlacement(0,G4ThreeVector( 7.5*m,0,0), |
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178 | "Target 3d",smallBoxLog, |
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179 | worldPhys,false,0); |
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180 | |
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181 | |
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182 | // 3) Eight small boxes around the origin of the world volume |
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183 | // (in +-X, +-Y & +-Z) |
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184 | // |
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185 | // G4PVPlacement *SmTg4a_Phys= |
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186 | new G4PVPlacement |
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187 | (0,G4ThreeVector( 0.3*m, 0.3*m,0.3*m), "Target 4a",tinyBoxLog, |
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188 | worldPhys,false,0); |
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189 | // G4PVPlacement *SmTg4b_Phys= |
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190 | new G4PVPlacement |
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191 | (0,G4ThreeVector( 0.3*m,-0.3*m,0.3*m), "Target 4b",tinyBoxLog, |
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192 | worldPhys,false,0); |
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193 | // G4PVPlacement *SmTg4c_Phys= |
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194 | new G4PVPlacement |
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195 | (0,G4ThreeVector(-0.3*m,-0.3*m,0.3*m), "Target 4c",tinyBoxLog, |
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196 | worldPhys,false,0); |
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197 | // G4PVPlacement *SmTg4d_Phys= |
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198 | new G4PVPlacement |
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199 | (0,G4ThreeVector(-0.3*m, 0.3*m,0.3*m), "Target 4d",tinyBoxLog, |
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200 | worldPhys,false,0); |
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201 | |
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202 | // G4PVPlacement *SmTg4e_Phys= |
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203 | new G4PVPlacement |
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204 | (0,G4ThreeVector( 0.3*m, 0.3*m,-0.3*m), "Target 4e",tinyBoxLog, |
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205 | worldPhys,false,0); |
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206 | // G4PVPlacement *SmTg4f_Phys= |
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207 | new G4PVPlacement |
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208 | (0,G4ThreeVector( 0.3*m,-0.3*m,-0.3*m), "Target 4f",tinyBoxLog, |
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209 | worldPhys,false,0); |
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210 | // G4PVPlacement *SmTg4g_Phys= |
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211 | new G4PVPlacement |
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212 | (0,G4ThreeVector(-0.3*m,-0.3*m,-0.3*m), "Target 4g",tinyBoxLog, |
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213 | worldPhys,false,0); |
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214 | // G4PVPlacement *SmTg4h_Phys= |
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215 | new G4PVPlacement |
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216 | (0,G4ThreeVector(-0.3*m, 0.3*m,-0.3*m), "Target 4h",tinyBoxLog, |
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217 | worldPhys,false,0); |
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218 | |
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219 | return worldPhys; |
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220 | } |
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221 | |
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222 | #include "G4ChordFinder.hh" |
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223 | #include "G4PropagatorInField.hh" |
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224 | #include "G4MagneticField.hh" |
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225 | #include "G4FieldManager.hh" |
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226 | #include "G4TransportationManager.hh" |
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227 | #include "G4HelixExplicitEuler.hh" |
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228 | #include "G4HelixSimpleRunge.hh" |
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229 | #include "G4HelixImplicitEuler.hh" |
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230 | #include "G4ExplicitEuler.hh" |
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231 | #include "G4ImplicitEuler.hh" |
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232 | #include "G4SimpleRunge.hh" |
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233 | #include "G4SimpleHeum.hh" |
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234 | #include "G4ClassicalRK4.hh" |
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235 | #include "G4Mag_SpinEqRhs.hh" |
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236 | #include "G4CashKarpRKF45.hh" |
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237 | #include "G4RKG3_Stepper.hh" |
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238 | |
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239 | G4UniformMagField myMagField(10.*tesla, 0., 0.); |
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240 | |
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241 | |
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242 | G4FieldManager* SetupField(G4int type) |
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243 | { |
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244 | G4FieldManager *pFieldMgr; |
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245 | G4ChordFinder *pChordFinder; |
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246 | G4Mag_SpinEqRhs *fEquation = new G4Mag_SpinEqRhs(&myMagField); |
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247 | G4MagIntegratorStepper *pStepper; |
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248 | |
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249 | const int ncompspin=12; |
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250 | |
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251 | switch ( type ) |
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252 | { |
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253 | case 0: pStepper = new G4ExplicitEuler( fEquation, ncompspin ); break; |
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254 | case 1: pStepper = new G4ImplicitEuler( fEquation, ncompspin ); break; |
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255 | case 2: pStepper = new G4SimpleRunge( fEquation, ncompspin ); break; |
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256 | case 3: pStepper = new G4SimpleHeum( fEquation, ncompspin ); break; |
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257 | case 4: pStepper = new G4ClassicalRK4( fEquation, ncompspin ); break; |
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258 | case 8: pStepper = new G4CashKarpRKF45( fEquation, ncompspin ); break; |
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259 | default: pStepper = new G4ClassicalRK4( fEquation, ncompspin ); break; |
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260 | } |
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261 | |
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262 | pFieldMgr= G4TransportationManager::GetTransportationManager()-> |
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263 | GetFieldManager(); |
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264 | |
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265 | pFieldMgr->SetDetectorField( &myMagField ); |
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266 | |
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267 | pChordFinder = new G4ChordFinder( &myMagField, |
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268 | 1.0e-2 * mm, |
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269 | pStepper); |
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270 | |
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271 | pFieldMgr->SetChordFinder( pChordFinder ); |
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272 | |
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273 | return pFieldMgr; |
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274 | } |
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275 | |
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276 | G4PropagatorInField* SetupPropagator( G4int type) |
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277 | { |
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278 | // G4FieldManager* fieldMgr= |
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279 | SetupField( type) ; |
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280 | |
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281 | // G4ChordFinder theChordFinder( &MagField, 0.05*mm ); // Default stepper |
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282 | |
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283 | G4PropagatorInField *thePropagator = |
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284 | G4TransportationManager::GetTransportationManager()-> |
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285 | GetPropagatorInField (); |
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286 | |
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287 | // Let us test the new Minimum Epsilon Step functionality |
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288 | thePropagator -> SetMinimumEpsilonStep( 1.0e-8 ) ; |
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289 | thePropagator -> SetMaximumEpsilonStep( 1.0e-8 ) ; |
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290 | |
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291 | return thePropagator; |
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292 | } |
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293 | |
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294 | // This is Done only for this test program ... the transportation does it. |
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295 | // The method is now obsolete -- as propagator in Field has this method, |
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296 | // in order to message the correct field manager's chord finder. |
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297 | // |
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298 | void ObsoleteSetChargeMomentumMass(G4double charge, G4double MomentumXc, G4double Mass) |
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299 | { |
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300 | G4ChordFinder* pChordFinder; |
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301 | |
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302 | pChordFinder= G4TransportationManager::GetTransportationManager()-> |
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303 | GetFieldManager()->GetChordFinder(); |
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304 | |
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305 | pChordFinder->SetChargeMomentumMass( |
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306 | charge, // charge in e+ units |
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307 | MomentumXc, // Momentum in Mev/c ? |
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308 | Mass ); |
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309 | } |
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310 | |
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311 | // |
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312 | // Test Stepping |
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313 | // |
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314 | G4bool testG4PropagatorInField(G4VPhysicalVolume *pTopNode, G4int ) // type |
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315 | { |
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316 | void report_endPV(G4ThreeVector Position, |
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317 | G4ThreeVector UnitVelocity, |
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318 | G4ThreeVector Spin, |
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319 | G4double step_len, |
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320 | G4double physStep, |
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321 | G4double safety, |
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322 | G4ThreeVector EndPosition, |
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323 | G4ThreeVector EndUnitVelocity, |
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324 | G4ThreeVector EndSpin, |
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325 | G4int Step, |
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326 | G4VPhysicalVolume* startVolume); |
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327 | |
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328 | G4UniformMagField MagField(10.*tesla, 0., 0.); // Tesla Defined ? |
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329 | G4TransportationManager* transportMgr = G4TransportationManager::GetTransportationManager(); |
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330 | G4Navigator* pNavig= transportMgr-> GetNavigatorForTracking(); |
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331 | // G4Navigator *pNavig= G4TransportationManager:: |
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332 | // GetTransportationManager()-> GetNavigatorForTracking(); |
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333 | |
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334 | // G4PropagatorInField *pMagFieldPropagator= SetupPropagator(type); |
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335 | G4PropagatorInField *pMagFieldPropagator= |
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336 | transportMgr->GetPropagatorInField(); |
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337 | |
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338 | pMagFieldPropagator->SetChargeMomentumMass( |
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339 | +1., // charge in e+ units |
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340 | 0.1*GeV, // Momentum in Mev/c ? |
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341 | 0.105658387*GeV ); |
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342 | pNavig->SetWorldVolume(pTopNode); |
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343 | |
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344 | G4VPhysicalVolume *located; |
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345 | G4double step_len, physStep, safety; |
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346 | G4ThreeVector xHat(1,0,0),yHat(0,1,0),zHat(0,0,1); |
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347 | G4ThreeVector mxHat(-1,0,0),myHat(0,-1,0),mzHat(0,0,-1); |
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348 | |
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349 | // physStep=kInfinity; |
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350 | G4ThreeVector Position(0.,0.,0.); |
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351 | G4ThreeVector UnitMomentum(0.,0.6,0.8); |
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352 | G4ThreeVector EndPosition, EndUnitMomentum; |
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353 | |
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354 | // |
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355 | // Test location & Step computation |
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356 | // |
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357 | /* assert(located->GetName()=="World"); */ |
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358 | |
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359 | const G4double threshold= 1.e-6; |
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360 | |
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361 | if( std::fabs(UnitMomentum.mag() - 1.0) > threshold ) |
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362 | { |
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363 | G4cout << "UnitMomentum.mag() - 1.0 = " << UnitMomentum.mag() - 1.0 << |
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364 | G4endl; |
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365 | } |
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366 | |
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367 | G4cout << G4endl; |
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368 | |
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369 | for( int iparticle=0; iparticle < 2; iparticle++ ) |
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370 | { |
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371 | physStep= 2.5 * mm ; // millimeters |
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372 | Position = G4ThreeVector(0.,0.,0.) |
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373 | + iparticle * G4ThreeVector(0.2, 0.3, 0.4); |
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374 | UnitMomentum = (G4ThreeVector(0.,0.6,0.8) |
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375 | + (float)iparticle * G4ThreeVector(0.1, 0.2, 0.3)).unit(); |
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376 | |
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377 | G4double momentum_val= (0.5+iparticle*1.0) * 0.1*GeV; // As energy/c |
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378 | G4double rest_mass = 0.105658387*GeV; // A muon |
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379 | |
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380 | G4double kineticEnergy = momentum_val*momentum_val / |
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381 | ( std::sqrt( momentum_val*momentum_val + rest_mass * rest_mass ) |
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382 | + rest_mass ); |
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383 | G4double labTof= 10.0*ns, properTof= 0.1*ns; |
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384 | pMagFieldPropagator->SetChargeMomentumMass( |
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385 | +1, // charge in e+ units |
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386 | momentum_val, |
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387 | rest_mass); |
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388 | |
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389 | G4double beta = momentum_val / std::sqrt( rest_mass*rest_mass + momentum_val*momentum_val ); |
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390 | G4double velocity_magnitude = beta * c_light; |
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391 | // G4ThreeVector Velocity = UnitMomentum * velocity_magnitude; |
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392 | |
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393 | G4cout << G4endl; |
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394 | G4cout << "Test PropagateMagField: ***********************" << G4endl |
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395 | << " Starting New Particle with Position " << Position << G4endl |
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396 | << " and UnitVelocity " << UnitMomentum << G4endl; |
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397 | G4cout << " Momentum in MeV/c is "<< (0.5+iparticle*1.0)*0.1*GeV/MeV; |
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398 | G4cout << G4endl; |
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399 | |
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400 | // G4ThreeVector initialSpin = UnitMomentum; |
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401 | // G4ThreeVector initialSpin(UnitMomentum.y(),-UnitMomentum.x(),UnitMomentum.z()); |
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402 | G4ThreeVector initialSpin = (UnitMomentum.cross(G4ThreeVector(1.0,0.,0.))).unit(); |
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403 | |
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404 | G4cout << " Initial spin is set to = " << initialSpin << G4endl; |
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405 | G4cout << " Initial dot product of spin and momentum = " |
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406 | << initialSpin.dot(UnitMomentum) << G4endl; |
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407 | |
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408 | for( int istep=0; istep < 14; istep++ ){ |
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409 | // // G4cout << "UnitMomentum Magnitude is " << UnitMomentum.mag() << G4endl; |
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410 | located= pNavig->LocateGlobalPointAndSetup(Position); |
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411 | // Is the following better ?? It would need "changes" |
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412 | // located= pMagFieldPropagator->LocateGlobalPointAndSetup(Position); |
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413 | // G4cout << "Starting Step " << istep << " in volume " |
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414 | // << located->GetName() << G4endl; |
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415 | |
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416 | G4ThreeVector spinValue( initialSpin ); |
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417 | |
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418 | G4FieldTrack initTrack( Position, |
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419 | UnitMomentum, |
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420 | 0.0, // starting S curve len |
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421 | kineticEnergy, |
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422 | rest_mass, |
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423 | velocity_magnitude, |
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424 | labTof, |
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425 | properTof, |
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426 | &spinValue |
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427 | ); |
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428 | |
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429 | step_len=pMagFieldPropagator->ComputeStep( initTrack, |
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430 | physStep, |
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431 | safety |
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432 | ,located); |
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433 | // -------------------- |
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434 | EndPosition= pMagFieldPropagator->EndPosition(); |
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435 | EndUnitMomentum= pMagFieldPropagator->EndMomentumDir(); |
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436 | // -------- |
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437 | G4FieldTrack EndFieldTrack= pMagFieldPropagator->GetEndState(); |
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438 | G4ThreeVector EndSpin= EndFieldTrack.GetSpin(); |
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439 | G4ThreeVector EndUnitMomentum = EndFieldTrack.GetMomentumDir(); |
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440 | |
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441 | // G4cout << " EndPosition " << EndPosition << G4endl; |
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442 | // G4cout << " EndUnitMomentum " << EndUnitMomentum << G4endl; |
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443 | // G4cout << " initialSpin " << initialSpin.mag() << G4endl; |
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444 | // G4cout << " EndSpin " << EndSpin.mag() << G4endl; |
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445 | |
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446 | if( std::fabs(EndUnitMomentum.mag2() - 1.0) > threshold ) |
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447 | G4cout << "EndUnitMomentum.mag2() - 1.0 = " << |
---|
448 | EndUnitMomentum.mag2() - 1.0 << G4endl; |
---|
449 | |
---|
450 | // In this case spin should be parallel (equal) to momentum |
---|
451 | G4double endDot= EndSpin.dot(EndUnitMomentum) ; |
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452 | G4cout << " dot product of spin and momentum = " << endDot << G4endl; |
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453 | if( std::fabs(endDot) > threshold ){ |
---|
454 | G4cout << " $$$$$$$$$$$$ Spin dot Momentum is above threshold of " |
---|
455 | << threshold << G4endl ; |
---|
456 | G4cout << " Spin dot UnitMomentum= " << endDot << " "; |
---|
457 | G4cout << " Spin magnitude= " << EndSpin.mag() << " " |
---|
458 | << "(-1=" << (EndSpin.mag()-1.0) << ") "; |
---|
459 | G4cout << " UnitMom mag= " << EndUnitMomentum.mag() << " " |
---|
460 | << "(-1=" << (EndUnitMomentum.mag()-1.0) << ") "; |
---|
461 | G4cout << G4endl; |
---|
462 | } |
---|
463 | G4ThreeVector MoveVec = EndPosition - Position; |
---|
464 | assert( MoveVec.mag() < physStep*(1.+1.e-9) ); |
---|
465 | |
---|
466 | // G4cout << " testPropagatorInField: After stepI " << istep << " : " << G4endl; |
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467 | report_endPV(Position, UnitMomentum, initialSpin, step_len, physStep, safety, |
---|
468 | EndPosition, EndUnitMomentum, EndSpin, istep, located ); |
---|
469 | |
---|
470 | assert(safety>=0); |
---|
471 | pNavig->SetGeometricallyLimitedStep(); |
---|
472 | // pMagFieldPropagator->SetGeometricallyLimitedStep(); |
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473 | |
---|
474 | Position= EndPosition; |
---|
475 | // Velocity= EndVelocity; |
---|
476 | UnitMomentum= EndUnitMomentum; |
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477 | initialSpin = EndSpin; |
---|
478 | |
---|
479 | physStep *= 2.; |
---|
480 | } // ........................... end for ( istep ) |
---|
481 | } // .............................. end for ( iparticle ) |
---|
482 | |
---|
483 | return(1); |
---|
484 | } |
---|
485 | |
---|
486 | // int main(int argc, char** argv) |
---|
487 | int main(int argc, char **argv) |
---|
488 | { |
---|
489 | G4VPhysicalVolume *myTopNode; |
---|
490 | G4int type; |
---|
491 | myTopNode=BuildGeometry(); // Build the geometry |
---|
492 | G4GeometryManager::GetInstance()->CloseGeometry(false); |
---|
493 | |
---|
494 | type = 8 ; |
---|
495 | |
---|
496 | if( argc == 2 ) |
---|
497 | type = atoi(argv[1]); |
---|
498 | |
---|
499 | // Setup the Propagator and register it with the Transportation Manager |
---|
500 | G4PropagatorInField *pMagFieldPropagator= SetupPropagator(type); |
---|
501 | |
---|
502 | G4cout << " Using the following values for " |
---|
503 | << " Min Eps = " << pMagFieldPropagator->GetMinimumEpsilonStep() |
---|
504 | << " and " |
---|
505 | << " Max Eps = " << pMagFieldPropagator->GetMaximumEpsilonStep() |
---|
506 | << G4endl; |
---|
507 | |
---|
508 | // Do the tests without voxels |
---|
509 | G4cout << " Test with no voxels" << G4endl; |
---|
510 | testG4PropagatorInField(myTopNode, type); |
---|
511 | |
---|
512 | // Repeat tests but with full voxels |
---|
513 | G4cout << " Test with full voxels" << G4endl; |
---|
514 | G4GeometryManager::GetInstance()->OpenGeometry(); |
---|
515 | G4GeometryManager::GetInstance()->CloseGeometry(true); |
---|
516 | |
---|
517 | testG4PropagatorInField(myTopNode, type); |
---|
518 | |
---|
519 | G4GeometryManager::GetInstance()->OpenGeometry(); |
---|
520 | return 0; |
---|
521 | } |
---|
522 | |
---|
523 | |
---|
524 | void report_endPV(G4ThreeVector Position, |
---|
525 | G4ThreeVector , // UnitVelocity, |
---|
526 | G4ThreeVector , // Spin, |
---|
527 | G4double step_len, |
---|
528 | G4double physStep, |
---|
529 | G4double safety, |
---|
530 | G4ThreeVector EndPosition, |
---|
531 | G4ThreeVector EndUnitVelocity, |
---|
532 | G4ThreeVector EndSpin, |
---|
533 | G4int Step, |
---|
534 | G4VPhysicalVolume* startVolume) |
---|
535 | // G4VPhysicalVolume* endVolume) |
---|
536 | { |
---|
537 | const G4int verboseLevel=1; |
---|
538 | |
---|
539 | if( Step == 0 && verboseLevel <= 3 ) |
---|
540 | { |
---|
541 | G4cout.precision(3); |
---|
542 | // G4cout.setf(ios_base::fixed,ios_base::floatfield); |
---|
543 | G4cout << std::setw( 5) << "Step#" << " " |
---|
544 | << std::setw( 9) << "X(mm)" << " " |
---|
545 | << std::setw( 9) << "Y(mm)" << " " |
---|
546 | << std::setw( 9) << "Z(mm)" << " " |
---|
547 | << std::setw( 7) << " N_x " << " " |
---|
548 | << std::setw( 7) << " N_y " << " " |
---|
549 | << std::setw( 7) << " N_z " << " " |
---|
550 | << std::setw( 7) << " S_x " << " " |
---|
551 | << std::setw( 7) << " S_y " << " " |
---|
552 | << std::setw( 7) << " S_z " << " " |
---|
553 | // << std::setw( 9) << "KinE(MeV)" << " " |
---|
554 | // << std::setw( 9) << "dE(MeV)" << " " |
---|
555 | << std::setw( 9) << "StepLen" << " " |
---|
556 | << std::setw( 9) << "PhsStep" << " " |
---|
557 | << std::setw( 9) << "Safety" << " " |
---|
558 | << std::setw(18) << "NextVolume" << " " |
---|
559 | << G4endl; |
---|
560 | } |
---|
561 | // |
---|
562 | // |
---|
563 | if( verboseLevel > 3 ) |
---|
564 | { |
---|
565 | G4cout << "End Position is " << EndPosition << G4endl |
---|
566 | << " and UnitVelocity is " << EndUnitVelocity << G4endl; |
---|
567 | G4cout << "Step taken was " << step_len |
---|
568 | << " out of PhysicalStep= " << physStep << G4endl; |
---|
569 | G4cout << "Final safety is: " << safety << G4endl; |
---|
570 | |
---|
571 | G4cout << "Chord length = " << (EndPosition-Position).mag() << G4endl; |
---|
572 | G4cout << G4endl; |
---|
573 | } |
---|
574 | else // if( verboseLevel > 0 ) |
---|
575 | { |
---|
576 | G4cout.precision(3); |
---|
577 | G4cout << std::setw( 5) << Step << " " |
---|
578 | << std::setw( 9) << Position.x() << " " |
---|
579 | << std::setw( 9) << Position.y() << " " |
---|
580 | << std::setw( 9) << Position.z() << " " |
---|
581 | << std::setw( 7) << EndUnitVelocity.x() << " " |
---|
582 | << std::setw( 7) << EndUnitVelocity.y() << " " |
---|
583 | << std::setw( 7) << EndUnitVelocity.z() << " " |
---|
584 | << std::setw( 7) << EndSpin.x() << " " |
---|
585 | << std::setw( 7) << EndSpin.y() << " " |
---|
586 | << std::setw( 7) << EndSpin.z() << " " |
---|
587 | // << std::setw( 9) << KineticEnergy << " " |
---|
588 | // << std::setw( 9) << EnergyDifference << " " |
---|
589 | << std::setw( 9) << step_len << " " |
---|
590 | << std::setw( 9) << physStep << " " |
---|
591 | << std::setw( 9) << safety << " "; |
---|
592 | if( startVolume != 0) { |
---|
593 | G4cout << std::setw(12) << startVolume->GetName() << " "; |
---|
594 | } else { |
---|
595 | G4cout << std::setw(12) << "OutOfWorld" << " "; |
---|
596 | } |
---|
597 | |
---|
598 | #if 0 |
---|
599 | if( endVolume != 0) |
---|
600 | { |
---|
601 | G4cout << std::setw(12) << endVolume()->GetName() << " "; |
---|
602 | } |
---|
603 | else |
---|
604 | { |
---|
605 | G4cout << std::setw(12) << "OutOfWorld" << " "; |
---|
606 | } |
---|
607 | #endif |
---|
608 | G4cout << G4endl; |
---|
609 | } |
---|
610 | } |
---|
611 | |
---|
612 | int readin_particle( ) |
---|
613 | { |
---|
614 | static const |
---|
615 | double pmass[5] = { |
---|
616 | 0.00051099906 , // electron |
---|
617 | 0.105658389 , // muon |
---|
618 | 0.13956995 , // pion |
---|
619 | 0.493677 , // kaon |
---|
620 | 0.93827231 // proton |
---|
621 | } ; |
---|
622 | const double cSpeed = 299792458.0 ; // light speed in m/s |
---|
623 | const double pi = 3.141592653589793238 ; |
---|
624 | int pCharge, i ; |
---|
625 | double pMomentum, pTeta, pPhi, h ; |
---|
626 | G4cout<<"Enter particle type: 0 - electron, 1 - muon, 2 - pion, \n" |
---|
627 | <<"3 - kaon, 4 - proton "<< G4endl ; |
---|
628 | G4cin>>i ; |
---|
629 | double pMass = pmass[i] ; |
---|
630 | G4cout<<"Enter particle charge in units of the positron charge "<< G4endl ; |
---|
631 | G4cin>>pCharge ; |
---|
632 | G4cout<<"Enter particle momentum in GeV/c"<<G4endl ; |
---|
633 | G4cin>>pMomentum ; |
---|
634 | G4cout<<"Enter particle teta & phi in degrees"<<G4endl ; |
---|
635 | G4cin>>pTeta ; |
---|
636 | G4cin>>pPhi ; |
---|
637 | G4cout<<"Enter particle Step in centimeters"<<G4endl ; |
---|
638 | G4cin>>h ; |
---|
639 | |
---|
640 | h *= 10.; // G4 units are in millimeters. |
---|
641 | |
---|
642 | double betaGamma = pMomentum/pMass ; |
---|
643 | double pSpeed = betaGamma*cSpeed/std::sqrt(1 + betaGamma*betaGamma) ; |
---|
644 | double pEnergy = pMomentum*cSpeed/pSpeed ; |
---|
645 | pEnergy *= 1.60217733e-10 ; // energy in J (SI units) |
---|
646 | pTeta *= pi/180 ; |
---|
647 | pPhi *= pi/180 ; |
---|
648 | |
---|
649 | #if 0 |
---|
650 | for(i=0;i<3;i++) ystart[i] = 0 ; // initial coordinates |
---|
651 | ystart[3] = pSpeed*std::sin(pTeta)*std::cos(pPhi) ; // and speeds |
---|
652 | ystart[4] = pSpeed*std::sin(pTeta)*std::sin(pPhi) ; |
---|
653 | ystart[5] = pSpeed*std::cos(pTeta) ; |
---|
654 | #endif |
---|
655 | |
---|
656 | return 1; |
---|
657 | } |
---|
658 | |
---|
659 | |
---|