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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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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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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: RandomDetector.cc,v 1.5 2006/06/29 17:23:16 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 | // RandomDetector |
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33 | // |
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34 | // Author: Martin Liendl - Martin.Liendl@cern.ch |
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35 | // |
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36 | // -------------------------------------------------------------- |
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37 | // |
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38 | #include "globals.hh" |
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39 | #include "Randomize.hh" |
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40 | #include "G4PVPlacement.hh" |
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41 | #include "G4LogicalVolume.hh" |
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42 | #include "G4Box.hh" |
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43 | #include "G4Material.hh" |
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44 | |
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45 | #include "RandomDetector.hh" |
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46 | |
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47 | //RandomDetector::RandomDetector(G4int levels, G4int perLevel, G4double prop) |
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48 | |
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49 | RandomDetector::RandomDetector(G4double prop) |
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50 | : levels_(0), |
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51 | perLevel_(0), |
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52 | overlapProp_(prop), |
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53 | worldDim_(10.*m) |
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54 | { |
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55 | } |
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56 | |
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57 | |
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58 | RandomDetector::~RandomDetector() |
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59 | { |
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60 | } |
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61 | |
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62 | |
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63 | G4VPhysicalVolume * RandomDetector::Construct() |
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64 | { |
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65 | // Material: only one for all volumes ... |
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66 | G4double density = 1.390*g/cm3; |
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67 | G4double a = 39.95*g/mole; |
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68 | G4Material* lAr = new G4Material("liquidArgon", 18., a, density); |
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69 | |
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70 | // world volume |
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71 | G4double halfDim = worldDim_/2.; |
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72 | G4Box * aWorldBox = new G4Box("WorldBox", halfDim, halfDim, halfDim); |
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73 | G4LogicalVolume * aWorldLV = new G4LogicalVolume(aWorldBox, lAr, "WorldLV"); |
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74 | |
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75 | // 2 daughters, overlapping with prop. p (protruding parent or each other) |
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76 | // G4double outer = sqrt(3.*halfDim*halfDim); |
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77 | G4double inner = halfDim; |
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78 | G4double childDim = halfDim/3.; |
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79 | G4double childRad = std::sqrt(3.*childDim*childDim); |
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80 | G4Box * aChildBox = new G4Box("ChildBox", childDim, childDim, childDim); |
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81 | G4LogicalVolume * child1 = new G4LogicalVolume(aChildBox, lAr, "Child_1_LV"); |
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82 | G4LogicalVolume * child2 = new G4LogicalVolume(aChildBox, lAr, "Child_2_LV"); |
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83 | |
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84 | G4bool parentOverlap = G4UniformRand() < overlapProp_ ? true : false; |
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85 | G4bool childOverlap = G4UniformRand() < overlapProp_ ? true : false; |
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86 | |
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87 | G4ThreeVector ax1(1.,1.,1.); |
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88 | G4RotationMatrix * rm1 = new G4RotationMatrix(ax1,30.*deg); |
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89 | G4ThreeVector ax2(0.2,-1.,0.45); |
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90 | G4RotationMatrix * rm2 = new G4RotationMatrix(ax2,70.*deg); |
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91 | |
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92 | G4double t1 = G4UniformRand()*180.*deg; |
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93 | G4double p1 = G4UniformRand()*360.*deg; |
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94 | G4double t2 = G4UniformRand()*180.*deg; |
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95 | G4double p2 = G4UniformRand()*360.*deg; |
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96 | G4double r1, r2; |
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97 | |
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98 | if (parentOverlap) |
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99 | { |
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100 | r1 = inner - childRad/3.; |
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101 | } |
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102 | else |
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103 | { |
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104 | r1 = inner - childRad - childRad/5.; |
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105 | } |
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106 | |
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107 | r2 = inner - childRad - childRad/5.; |
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108 | |
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109 | if (childOverlap) |
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110 | { |
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111 | t2 = t1; |
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112 | p2 = p1; |
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113 | } |
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114 | |
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115 | G4ThreeVector tr1( r1*std::cos(p1)*std::sin(t1), r1*std::sin(p1)*std::sin(t1), r1*std::cos(t1)); |
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116 | G4ThreeVector tr2( r2*std::cos(p2)*std::sin(t2), r2*std::sin(p2)*std::sin(t2), r2*std::cos(t2)); |
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117 | |
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118 | new G4PVPlacement(rm1,tr1,child1,"Child_1",aWorldLV,false,1); |
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119 | new G4PVPlacement(rm2,tr2,child2,"Child_2",aWorldLV,false,2); |
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120 | return new G4PVPlacement(0,G4ThreeVector(),aWorldLV,"Random",0,false,1); |
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121 | } |
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122 | |
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