1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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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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12 | // * institutes,nor the agencies providing financial support for this * |
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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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16 | // * for the full disclaimer and the limitation of liability. * |
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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 | // File: CCalPrimaryGeneratorAction.cc |
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28 | // Description: CCalPrimaryGeneratorAction Sets up particle beam |
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29 | /////////////////////////////////////////////////////////////////////////////// |
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30 | |
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31 | #include "CCalPrimaryGeneratorAction.hh" |
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32 | #include "CCalPrimaryGeneratorMessenger.hh" |
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33 | #include "G4HEPEvtInterface.hh" |
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34 | |
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35 | #include "G4Event.hh" |
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36 | #include "G4ParticleGun.hh" |
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37 | #include "G4ParticleTable.hh" |
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38 | #include "G4ParticleDefinition.hh" |
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39 | #include "CLHEP/Random/RandFlat.h" |
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40 | #include "G4HEPEvtInterface.hh" |
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41 | #include "G4RunManager.hh" |
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42 | |
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43 | #define debug |
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44 | |
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45 | CCalPrimaryGeneratorAction::CCalPrimaryGeneratorAction(): particleGun(0), |
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46 | generatorInput(singleFixed), verboseLevel(0), n_particle(1), |
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47 | particleName("pi-"), particleEnergy(100*GeV), particlePosition(0.,0.,0.), |
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48 | particleDir(1.,1.,0.1), isInitialized(0), scanSteps(0) { |
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49 | |
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50 | //Initialise the messenger |
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51 | gunMessenger = new CCalPrimaryGeneratorMessenger(this); |
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52 | |
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53 | //Default settings: |
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54 | SetMinimumEnergy(1.*GeV); |
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55 | SetMaximumEnergy(1.*TeV); |
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56 | SetMinimumEta(0.); |
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57 | SetMaximumEta(3.5); |
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58 | SetMinimumPhi(0.*degree); |
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59 | SetMaximumPhi(360.*degree); |
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60 | SetStepsPhi(1); |
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61 | SetStepsEta(1); |
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62 | |
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63 | // Number of particles per gun |
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64 | particleGun = new G4ParticleGun(n_particle); |
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65 | |
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66 | // Getting particle definition |
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67 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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68 | G4ParticleDefinition* particle = particleTable->FindParticle(particleName); |
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69 | particleGun->SetParticleDefinition(particle); |
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70 | |
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71 | // Setting particle properties |
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72 | particleGun->SetParticleEnergy(particleEnergy); |
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73 | particleGun->SetParticleMomentumDirection(particleDir); |
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74 | particleGun->SetParticlePosition(particlePosition); |
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75 | print(0); |
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76 | } |
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77 | |
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78 | CCalPrimaryGeneratorAction::~CCalPrimaryGeneratorAction() { |
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79 | if (gunMessenger) |
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80 | delete gunMessenger; |
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81 | if (particleGun) |
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82 | delete particleGun; |
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83 | } |
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84 | |
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85 | void CCalPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) { |
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86 | |
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87 | if (isInitialized == 0) initialize(); |
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88 | |
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89 | if (generatorInput == singleRandom) { |
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90 | particleEnergy = CLHEP::RandFlat::shoot(energyMin,energyMax); |
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91 | particleGun->SetParticleEnergy(particleEnergy); |
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92 | |
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93 | G4double eta = CLHEP::RandFlat::shoot(etaMin,etaMax); |
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94 | G4double phi = CLHEP::RandFlat::shoot(phiMin,phiMax); |
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95 | G4double theta = std::atan(std::exp(-eta))*2.; |
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96 | G4double randomX = std::sin(theta)*std::cos(phi); |
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97 | G4double randomY = std::sin(theta)*std::sin(phi); |
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98 | G4double randomZ = std::cos(theta); |
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99 | |
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100 | particleDir = G4ThreeVector(randomX,randomY,randomZ); |
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101 | particleGun->SetParticleMomentumDirection(particleDir); |
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102 | #ifdef debug |
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103 | if (verboseLevel >= 2 ) { |
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104 | G4cout << "Energy " << particleEnergy/GeV << " GeV; Theta " |
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105 | << theta/deg << " degree; Phi " << phi/deg << " degree" << G4endl; |
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106 | G4cout << "Shooting in " << particleDir << " direction "<< G4endl; |
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107 | } |
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108 | #endif |
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109 | } else if (generatorInput == singleScan) { |
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110 | G4double scanEtaStep, scanPhiStep; |
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111 | if (scanSteps == 0) { |
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112 | scanPhiStep = (phiMax - phiMin) / phiSteps; |
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113 | phiValue = phiMin - scanPhiStep; //first step is going to change scanCurrentPhiValue |
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114 | etaValue = etaMin; |
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115 | } |
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116 | |
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117 | scanEtaStep = (etaMax - etaMin) / etaSteps; |
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118 | scanPhiStep = (phiMax - phiMin) / phiSteps; |
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119 | #ifdef debug |
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120 | if (verboseLevel > 2 ) { |
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121 | G4cout << " scanEtaStep " << scanEtaStep << " # of Steps " << etaSteps |
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122 | << G4endl; |
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123 | G4cout << " scanPhiStep " << scanPhiStep << " # of Steps " << phiSteps |
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124 | << G4endl; |
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125 | } |
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126 | #endif |
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127 | |
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128 | //----- First scan in phi, then in eta |
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129 | if (phiMax - phiValue < 1.E-6 * scanPhiStep) { // !only <= 1.E6 steps allowed |
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130 | if (etaMax - etaValue < 1.E-6 * scanEtaStep) { // !only <= 1.E6 steps allowed |
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131 | G4cout << " Scan completed!" << G4endl; |
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132 | return; |
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133 | } else { |
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134 | etaValue += scanEtaStep; |
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135 | phiValue = phiMin; |
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136 | } |
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137 | } else { |
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138 | phiValue += scanPhiStep; |
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139 | } |
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140 | G4double theta = std::atan(std::exp(-etaValue))*2.; |
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141 | |
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142 | G4double scanX = std::sin(theta)*std::cos(phiValue); |
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143 | G4double scanY = std::sin(theta)*std::sin(phiValue); |
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144 | G4double scanZ = std::cos(theta); |
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145 | if (verboseLevel >= 2 ) { |
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146 | G4cout << "Scan eta " << etaValue << " Phi " << phiValue/deg |
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147 | << " theta " << theta/deg << G4endl; |
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148 | } |
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149 | particleDir = G4ThreeVector(scanX,scanY,scanZ); |
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150 | particleGun->SetParticleMomentumDirection(particleDir); |
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151 | #ifdef debug |
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152 | if (verboseLevel > 2 ) { |
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153 | G4cout << "Shooting in " << particleDir << " direction "<< G4endl; |
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154 | } |
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155 | #endif |
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156 | scanSteps++; |
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157 | } |
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158 | |
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159 | // Generate GEANT4 primary vertex |
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160 | particleGun->GeneratePrimaryVertex(anEvent); |
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161 | } |
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162 | |
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163 | |
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164 | void CCalPrimaryGeneratorAction::SetVerboseLevel(G4int val){ |
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165 | verboseLevel = val; |
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166 | } |
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167 | |
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168 | |
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169 | void CCalPrimaryGeneratorAction::SetRandom(G4String val) { |
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170 | |
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171 | if (val=="on") { |
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172 | generatorInput = singleRandom; |
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173 | print (1); |
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174 | } else { |
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175 | generatorInput = singleFixed; |
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176 | print (1); |
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177 | } |
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178 | } |
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179 | |
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180 | |
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181 | void CCalPrimaryGeneratorAction::SetScan(G4String val) { |
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182 | |
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183 | if (val=="on") { |
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184 | generatorInput = singleScan; |
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185 | scanSteps = 0; |
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186 | print (1); |
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187 | } else { |
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188 | generatorInput = singleFixed; |
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189 | print (1); |
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190 | } |
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191 | } |
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192 | |
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193 | |
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194 | void CCalPrimaryGeneratorAction::SetMinimumEnergy(G4double p){ |
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195 | |
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196 | if (p <= 0.) { |
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197 | G4cerr << "CCalPrimaryGeneratorAction::SetMinimumEnergy: value " << p/GeV |
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198 | << "GeV is out of bounds, it will not be used" << G4endl; |
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199 | G4cerr << " Should be >0. Please check" << G4endl; |
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200 | } else { |
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201 | energyMin = p; |
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202 | #ifdef debug |
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203 | if (verboseLevel >= 1 ) { |
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204 | G4cout << " CCalPrimaryGeneratorAction: setting min. value of energy to " |
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205 | << energyMin/GeV << " GeV " << G4endl; |
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206 | } |
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207 | #endif |
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208 | } |
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209 | } |
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210 | |
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211 | |
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212 | void CCalPrimaryGeneratorAction::SetMaximumEnergy(G4double p){ |
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213 | |
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214 | if (p <= 0.) { |
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215 | G4cerr << "CCalPrimaryGeneratorAction::SetMaximumEnergy: value " << p/GeV |
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216 | << "GeV is out of bounds, it will not be used" << G4endl; |
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217 | G4cerr << " Should be >0. Please check" << G4endl; |
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218 | } else { |
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219 | energyMax = p; |
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220 | #ifdef debug |
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221 | if (verboseLevel >= 1 ) { |
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222 | G4cout << " CCalPrimaryGeneratorAction: setting max. value of energy to " |
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223 | << energyMax/GeV << " GeV " << G4endl; |
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224 | } |
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225 | #endif |
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226 | } |
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227 | } |
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228 | |
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229 | |
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230 | void CCalPrimaryGeneratorAction::SetMinimumPhi(G4double p){ |
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231 | |
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232 | if (std::fabs(p)>2.*pi) { |
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233 | G4cerr << "CCalPrimaryGeneratorAction::SetMinimumPhi: setting value quite " |
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234 | << "large" << G4endl; |
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235 | G4cerr << " Should be given in radians - Please check" << G4endl; |
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236 | } else { |
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237 | phiMin = std::fabs(p); |
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238 | #ifdef debug |
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239 | if (verboseLevel >= 1 ) { |
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240 | G4cout << " CCalPrimaryGeneratorAction: setting min. value of phi to " |
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241 | << phiMin << G4endl; |
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242 | } |
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243 | #endif |
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244 | } |
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245 | } |
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246 | |
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247 | |
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248 | void CCalPrimaryGeneratorAction::SetMaximumPhi(G4double p){ |
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249 | |
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250 | if (std::fabs(p)>2.*pi) { |
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251 | G4cerr << "CCalPrimaryGeneratorAction::SetMaximumPhi: setting value quite " |
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252 | << "large" << G4endl; |
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253 | G4cerr << " Should be given in radians - Please check" << G4endl; |
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254 | } else { |
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255 | phiMax = std::fabs(p); |
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256 | #ifdef debug |
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257 | if (verboseLevel >= 1 ) { |
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258 | G4cout << " CCalPrimaryGeneratorAction: setting max. value of phi to " |
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259 | << phiMax << G4endl; |
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260 | } |
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261 | #endif |
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262 | } |
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263 | } |
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264 | |
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265 | |
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266 | void CCalPrimaryGeneratorAction::SetStepsPhi(G4int val){ |
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267 | |
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268 | if (val <= 0) { |
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269 | G4cerr << "CCalPrimaryGeneratorAction::SetStepsPhi: value " << val |
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270 | << " is out of bounds, it will not be used" << G4endl; |
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271 | G4cerr << " Should be > 0 Please check" << G4endl; |
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272 | } else { |
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273 | phiSteps = val; |
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274 | #ifdef debug |
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275 | if (verboseLevel >= 1 ) { |
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276 | G4cout << " CCalPrimaryGeneratorAction: setting no. of steps in phi to " |
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277 | << phiSteps << G4endl; |
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278 | } |
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279 | #endif |
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280 | } |
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281 | } |
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282 | |
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283 | |
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284 | void CCalPrimaryGeneratorAction::SetMinimumEta(G4double p){ |
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285 | |
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286 | etaMin = p; |
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287 | #ifdef debug |
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288 | if (verboseLevel >= 1 ) { |
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289 | G4cout << " CCalPrimaryGeneratorAction: setting min. value of eta to " |
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290 | << etaMin << G4endl; |
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291 | } |
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292 | #endif |
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293 | } |
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294 | |
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295 | |
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296 | void CCalPrimaryGeneratorAction::SetMaximumEta(G4double p){ |
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297 | |
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298 | etaMax = p; |
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299 | #ifdef debug |
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300 | if (verboseLevel >= 1 ) { |
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301 | G4cout << " CCalPrimaryGeneratorAction: setting max. value of eta to " |
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302 | << etaMax << G4endl; |
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303 | } |
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304 | #endif |
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305 | } |
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306 | |
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307 | |
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308 | void CCalPrimaryGeneratorAction::SetStepsEta(G4int val){ |
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309 | |
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310 | if (val <= 0) { |
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311 | G4cerr<<"CCalPrimaryGeneratorAction::SetStepsEta: value " << val << " is out of bounds, it will not be used"<<G4endl; |
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312 | G4cerr<<" Should be > 0 Please check"<<G4endl; |
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313 | } else { |
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314 | etaSteps = val; |
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315 | #ifdef debug |
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316 | if (verboseLevel >= 1 ) { |
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317 | G4cout << " CCalPrimaryGeneratorAction: setting no. of steps in eta to " |
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318 | << etaSteps << G4endl; |
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319 | } |
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320 | #endif |
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321 | } |
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322 | } |
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323 | |
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324 | void CCalPrimaryGeneratorAction::SetGunPosition(const G4ThreeVector & pos) const { |
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325 | |
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326 | particleGun->SetParticlePosition(pos); |
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327 | } |
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328 | |
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329 | void CCalPrimaryGeneratorAction::SetRunNo(G4int val){ |
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330 | G4RunManager::GetRunManager()->SetRunIDCounter( val ); |
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331 | } |
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332 | |
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333 | void CCalPrimaryGeneratorAction::initialize(){ |
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334 | |
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335 | isInitialized = 1; |
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336 | |
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337 | print (1); |
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338 | } |
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339 | |
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340 | |
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341 | void CCalPrimaryGeneratorAction::print(G4int val){ |
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342 | |
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343 | #ifdef debug |
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344 | if (verboseLevel >= val) { |
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345 | |
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346 | if (generatorInput == singleRandom) { |
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347 | G4cout << G4endl |
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348 | << "**********************************************************************" << G4endl |
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349 | << "* *" << G4endl |
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350 | << "* CCalPrimaryGeneratorAction DEFAULT Random Energy/Direction setting:*" << G4endl |
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351 | << "* *" << G4endl |
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352 | << "* *" << G4endl |
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353 | << "* Energy in [ "<< energyMin/GeV << " - " << energyMax/GeV << "] (GeV) "<< G4endl |
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354 | << "* Phi angle in [ "<< phiMin << " - " << phiMax << "] (rad) "<< G4endl |
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355 | << "* [ "<< phiMin/degree << " - " << phiMax/degree << "] (deg) "<< G4endl |
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356 | << "* Eta in [ "<< etaMin << " - " << etaMax << "] "<< G4endl |
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357 | << "* *" << G4endl |
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358 | << "* *" << G4endl |
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359 | << "**********************************************************************" << G4endl; |
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360 | } else if (generatorInput == singleScan) { |
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361 | G4cout << G4endl |
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362 | << "**********************************************************************" << G4endl |
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363 | << "* *" << G4endl |
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364 | << "* CCalPrimaryGeneratorAction DEFAULT Scan Direction settings : *" << G4endl |
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365 | << "* *" << G4endl |
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366 | << "* *" << G4endl |
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367 | << "* Phi angle in [ " << phiMin/degree << " - " << phiMax/degree << "] (deg) " << G4endl |
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368 | << "* Eta in [ " << etaMin << " - " << etaMax << "] " << G4endl |
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369 | << "* Steps along eta " << etaSteps << " and along phi " << phiSteps << G4endl |
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370 | << "* *" << G4endl |
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371 | << "* *" << G4endl |
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372 | << "**********************************************************************" << G4endl; |
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373 | } else if (generatorInput == singleFixed) { |
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374 | G4cout << G4endl |
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375 | << "*******************************************************************" << G4endl |
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376 | << "* *" << G4endl |
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377 | << "* CCalPrimaryGeneratorAction: Current settings : *" << G4endl |
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378 | << "* *" << G4endl |
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379 | << "* " << particleGun->GetNumberOfParticles() |
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380 | << " " << particleGun->GetParticleDefinition()->GetParticleName() |
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381 | << " of " << particleGun->GetParticleEnergy()/GeV << " GeV" << G4endl |
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382 | << "* will be shot from " << particleGun->GetParticlePosition() << G4endl; |
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383 | G4cout << "* in direction " << particleGun->GetParticleMomentumDirection() << G4endl; |
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384 | G4cout << "* *" << G4endl |
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385 | << "* *" << G4endl |
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386 | << "*******************************************************************" << G4endl; |
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387 | } |
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388 | } |
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389 | #endif |
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390 | |
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391 | } |
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392 | |
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