[807] | 1 | // %%%%%%%%%% |
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| 2 | // G4 headers |
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| 3 | // %%%%%%%%%% |
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| 4 | #include "G4Event.hh" |
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| 5 | #include "G4ParticleGun.hh" |
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| 6 | #include "G4ParticleTable.hh" |
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| 7 | #include "G4ParticleDefinition.hh" |
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| 8 | #include "Randomize.hh" |
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| 9 | #include "G4UnitsTable.hh" |
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| 10 | |
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| 11 | // %%%%%%%%%%%%% |
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| 12 | // gemc headers |
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| 13 | // %%%%%%%%%%%%% |
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| 14 | #include "MPrimaryGeneratorAction.h" |
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| 15 | #include "detector.h" |
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| 16 | |
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| 17 | // %%%%%%%%%%% |
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| 18 | // C++ headers |
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| 19 | // %%%%%%%%%%% |
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| 20 | #include <iostream> |
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| 21 | using namespace std; |
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| 22 | |
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| 23 | MPrimaryGeneratorAction::MPrimaryGeneratorAction(gemc_opts opts) |
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| 24 | { |
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| 25 | gemcOpt = opts; |
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| 26 | hd_msg = gemcOpt.args["LOG_MSG"].args + " Beam Settings >> " ; |
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| 27 | input_gen = gemcOpt.args["INPUT_GEN_FILE"].args; |
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| 28 | GEN_VERBOSITY = gemcOpt.args["GEN_VERBOSITY"].arg; |
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| 29 | |
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| 30 | particleTable = G4ParticleTable::GetParticleTable(); |
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| 31 | |
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| 32 | setBeam(gemcOpt); |
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| 33 | |
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| 34 | particleGun = new G4ParticleGun(1); |
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| 35 | |
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| 36 | if(input_gen == "gemc_internal") |
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| 37 | { |
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| 38 | cout << endl << hd_msg << " Beam Type: " << Particle->GetParticleName() << endl; |
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| 39 | cout << hd_msg << " Beam Momentum: " << G4BestUnit(mom, "Energy") ; |
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| 40 | if(dmom > 0) cout << " +- " << G4BestUnit(dmom, "Energy") ; |
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| 41 | cout << endl; |
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| 42 | cout << hd_msg << " Beam Direction: (theta, phi) = (" << theta/deg << ", " << phi/deg << ")" ; |
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| 43 | if(dtheta > 0 || dphi > 0) cout << " +- (" << dtheta/deg << ", " << dphi/deg << ")" ; |
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| 44 | cout << " deg " << endl; |
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| 45 | cout << hd_msg << " Beam Vertex: (" << vx/cm << ", " << vy/cm << ", " << vz/cm << ")" ; |
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| 46 | if(dvx + dvy + dvz > 0) cout << " +- (" << dvx/cm << ", " << dvy/cm << ", " << dvz/cm << ")" ; |
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| 47 | cout << " cm " << endl; |
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| 48 | } |
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| 49 | |
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| 50 | |
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| 51 | if(NP>0) |
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| 52 | { |
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| 53 | cout << endl << hd_msg << " Luminosity Particle Type: " << L_Particle->GetParticleName() << endl; |
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| 54 | cout << hd_msg << " Luminosity Particle Momentum: " << G4BestUnit(L_Mom, "Energy") ; |
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| 55 | cout << endl; |
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| 56 | cout << hd_msg << " Luminosity Particle Direction: (theta, phi) = (" << L_Theta/deg << ", " << L_Phi/deg << ")" ; |
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| 57 | cout << " deg " << endl; |
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| 58 | cout << hd_msg << " Luminosity Particle Vertex: (" << L_vx/cm << ", " << L_vy/cm << ", " << L_vz/cm << ") cm" << endl; |
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| 59 | cout << hd_msg << " Number of Luminosity Particles: " << NP << endl; |
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| 60 | cout << hd_msg << " Luminosity Time Window: " << TWINDOW/ns << " nanoseconds." << endl ; |
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| 61 | cout << hd_msg << " Luminosity Time Between Bunches: " << TBUNCH/ns << " nanoseconds." << endl; |
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| 62 | } |
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| 63 | |
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| 64 | } |
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| 65 | |
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| 66 | |
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| 67 | void MPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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| 68 | { |
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| 69 | // internal generator. Particle defined by command line |
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| 70 | if(input_gen == "gemc_internal") |
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| 71 | { |
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| 72 | // Primary Particle |
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| 73 | particleGun->SetParticleDefinition(Particle); |
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| 74 | |
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| 75 | // 4-momenta |
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| 76 | Mom = mom/MeV + (2.0*G4UniformRand()-1.0)*dmom/MeV; |
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| 77 | Theta = theta/rad + (2.0*G4UniformRand()-1.0)*dtheta/rad; |
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| 78 | Phi = phi/rad + (2.0*G4UniformRand()-1.0)*dphi/rad; |
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| 79 | double mass = Particle->GetPDGMass(); |
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| 80 | double akine = sqrt(Mom*Mom + mass*mass) - mass ; |
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| 81 | beam_dir = G4ThreeVector(cos(Phi/rad)*sin(Theta/rad), sin(Phi/rad)*sin(Theta/rad), cos(Theta/rad)); |
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| 82 | particleGun->SetParticleEnergy(akine); |
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| 83 | particleGun->SetParticleMomentumDirection(beam_dir); |
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| 84 | |
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| 85 | // vertex |
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| 86 | Vx = vx/mm + (2.0*G4UniformRand()-1.0)*dvx/mm; |
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| 87 | Vy = vy/mm + (2.0*G4UniformRand()-1.0)*dvy/mm; |
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| 88 | Vz = vz/mm + (2.0*G4UniformRand()-1.0)*dvz/mm; |
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| 89 | beam_vrt = G4ThreeVector(Vx, Vy, Vz); |
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| 90 | particleGun->SetParticlePosition(beam_vrt); |
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| 91 | |
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| 92 | // Primary particle generated int the middle of Time window |
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| 93 | particleGun->SetParticleTime(TWINDOW/2); |
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| 94 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 95 | } |
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| 96 | else |
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| 97 | // external generator: input file |
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| 98 | { |
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| 99 | // LUND format |
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| 100 | if(gformat == "LUND" && !gif.eof()) |
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| 101 | { |
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| 102 | double tmp, px, py, pz; |
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| 103 | int NPART, pdef; |
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| 104 | gif >> NPART >> tmp >> tmp >> tmp >> tmp >> tmp >> tmp >> tmp >> tmp >> tmp; |
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| 105 | for(int p=0; p<NPART; p++) |
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| 106 | { |
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| 107 | gif >> tmp >> tmp >> tmp >> pdef >> tmp >> tmp >> px >> py >> pz >> tmp >> tmp >> Vx >> Vy >> Vz; |
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| 108 | |
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| 109 | // Primary Particle |
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| 110 | Particle = particleTable->FindParticle(pdef); |
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| 111 | particleGun->SetParticleDefinition(Particle); |
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| 112 | |
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| 113 | // 4-momenta |
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| 114 | G4ThreeVector pmom(px*GeV, py*GeV, pz*GeV); |
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| 115 | Mom = pmom.mag(); |
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| 116 | Phi = pmom.getPhi(); |
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| 117 | Theta = pmom.getTheta(); |
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| 118 | double mass = Particle->GetPDGMass(); |
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| 119 | double akine = sqrt(Mom*Mom + mass*mass) - mass ; |
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| 120 | |
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| 121 | beam_dir = G4ThreeVector(cos(Phi/rad)*sin(Theta/rad), sin(Phi/rad)*sin(Theta/rad), cos(Theta/rad)); |
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| 122 | particleGun->SetParticleEnergy(akine); |
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| 123 | particleGun->SetParticleMomentumDirection(beam_dir); |
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| 124 | |
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| 125 | // vertex |
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| 126 | beam_vrt = G4ThreeVector(Vx*cm, Vy*cm, Vz*cm); |
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| 127 | particleGun->SetParticlePosition(beam_vrt); |
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| 128 | |
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| 129 | // Primary particle generated int the middle of Time window |
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| 130 | particleGun->SetParticleTime(TWINDOW/2); |
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| 131 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 132 | if(GEN_VERBOSITY > 3) |
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| 133 | cout << hd_msg << " Particle Number: " << p << ", id=" << pdef |
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| 134 | << " Vertex=" << beam_vrt << "cm, momentum=" << pmom/GeV << " GeV" << endl; |
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| 135 | } |
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| 136 | } |
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| 137 | } |
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| 138 | |
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| 139 | |
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| 140 | |
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| 141 | // Luminosity Particles |
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| 142 | int NBUNCHES = (int) floor(TWINDOW/TBUNCH); |
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| 143 | int PBUNCH = (int) floor((double)NP/NBUNCHES); |
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| 144 | |
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| 145 | particleGun->SetParticleDefinition(L_Particle); |
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| 146 | particleGun->SetParticlePosition(L_beam_vrt); |
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| 147 | double L_mass = L_Particle->GetPDGMass(); |
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| 148 | double L_akine = sqrt(L_Mom*L_Mom + L_mass*L_mass) - L_mass ; |
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| 149 | |
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| 150 | particleGun->SetParticleEnergy(L_akine); |
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| 151 | particleGun->SetParticleMomentumDirection(L_beam_dir); |
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| 152 | for(int b=0; b<NBUNCHES; b++) |
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| 153 | { |
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| 154 | for(int p=0; p<PBUNCH; p++) |
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| 155 | { |
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| 156 | particleGun-> SetParticleTime(TBUNCH*b); |
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| 157 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 158 | } |
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| 159 | } |
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| 160 | |
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| 161 | } |
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| 162 | |
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| 163 | |
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| 164 | |
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| 165 | void MPrimaryGeneratorAction::setBeam(gemc_opts) |
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| 166 | { |
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| 167 | string hd_msg = gemcOpt.args["LOG_MSG"].args + " Beam Settings >> " ; |
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| 168 | |
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| 169 | if(input_gen == "gemc_internal") |
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| 170 | { |
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| 171 | |
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| 172 | // %%%%%%%%%%%% |
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| 173 | // Primary Beam |
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| 174 | // %%%%%%%%%%%% |
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| 175 | string beam = gemcOpt.args["BEAM_P"].args; |
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| 176 | string vert = gemcOpt.args["BEAM_V"].args; |
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| 177 | string spread_b = gemcOpt.args["SPREAD_P"].args; |
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| 178 | string spread_v = gemcOpt.args["SPREAD_V"].args; |
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| 179 | |
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| 180 | string blockstr; |
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| 181 | int ppos = beam.find(","); |
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| 182 | blockstr.assign(beam, 0, ppos); |
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| 183 | |
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| 184 | Particle = particleTable->FindParticle(blockstr); |
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| 185 | |
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| 186 | if(!Particle) |
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| 187 | { |
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| 188 | if(blockstr == "show_all") |
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| 189 | { |
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| 190 | for(int i=0; i<particleTable->entries(); i++) |
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| 191 | cout << hd_msg << " g4 particle: " << particleTable->GetParticleName(i) << endl;; |
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| 192 | } |
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| 193 | else |
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| 194 | cout << hd_msg << " Particle " << blockstr << " not found in G4 table. Exiting" << endl << endl; |
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| 195 | |
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| 196 | exit(0); |
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| 197 | } |
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| 198 | |
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| 199 | // %%%%%%%% |
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| 200 | // Momentum |
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| 201 | // %%%%%%%% |
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| 202 | // energy |
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| 203 | beam.assign(beam, ppos+1, beam.size()); |
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| 204 | ppos = beam.find(","); |
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| 205 | blockstr.assign(beam, 0, ppos); |
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| 206 | mom = get_number(blockstr); |
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| 207 | // theta angle |
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| 208 | beam.assign(beam, ppos+1, beam.size()); |
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| 209 | ppos = beam.find(","); |
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| 210 | blockstr.assign(beam, 0, ppos); |
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| 211 | theta = get_number(blockstr); |
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| 212 | // phi angle |
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| 213 | beam.assign(beam, ppos+1, beam.size()); |
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| 214 | ppos = beam.find("\""); |
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| 215 | blockstr.assign(beam, 0, ppos); |
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| 216 | phi = get_number(blockstr); |
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| 217 | |
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| 218 | // %%%%%% |
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| 219 | // Spread |
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| 220 | // %%%%%% |
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| 221 | // delta energy |
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| 222 | ppos = spread_b.find(","); |
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| 223 | blockstr.assign(spread_b, 0, ppos); |
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| 224 | dmom = get_number(blockstr); |
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| 225 | // delta theta angle |
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| 226 | spread_b.assign(spread_b, ppos+1, spread_b.size()); |
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| 227 | ppos = spread_b.find(","); |
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| 228 | blockstr.assign(spread_b, 0, ppos); |
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| 229 | dtheta = get_number(blockstr); |
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| 230 | // delta phi angle |
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| 231 | spread_b.assign(spread_b, ppos+1, spread_b.size()); |
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| 232 | ppos = spread_b.find(","); |
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| 233 | blockstr.assign(spread_b, 0, ppos); |
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| 234 | dphi = get_number(blockstr); |
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| 235 | |
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| 236 | |
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| 237 | // %%%%%% |
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| 238 | // Vertex |
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| 239 | // %%%%%% |
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| 240 | // units |
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| 241 | ppos = vert.find(")"); |
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| 242 | string units; |
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| 243 | units.assign(vert, ppos+1, vert.size() - ppos); |
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| 244 | // vx |
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| 245 | ppos = vert.find("("); |
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| 246 | vert.assign(vert, ppos+1, vert.size()); |
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| 247 | ppos = vert.find(","); |
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| 248 | blockstr.assign(vert, 0, ppos); |
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| 249 | vx = get_number(blockstr + "*" + units); |
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| 250 | // vy |
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| 251 | ppos = vert.find(","); |
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| 252 | vert.assign(vert, ppos+1, vert.size()); |
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| 253 | ppos = vert.find(","); |
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| 254 | blockstr.assign(vert, 0, ppos); |
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| 255 | vy = get_number(blockstr + "*" + units); |
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| 256 | // vz |
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| 257 | ppos = vert.find(","); |
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| 258 | vert.assign(vert, ppos+1, vert.size()); |
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| 259 | ppos = vert.find(","); |
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| 260 | blockstr.assign(vert, 0, ppos); |
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| 261 | vz = get_number(blockstr + "*" + units); |
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| 262 | |
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| 263 | |
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| 264 | // %%%%%%%%%%%%%%%%%%%%%%%%% |
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| 265 | // Vertex Spread (cartesian) |
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| 266 | // %%%%%%%%%%%%%%%%%%%%%%%%% |
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| 267 | // units |
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| 268 | ppos = spread_v.find(")"); |
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| 269 | units.assign(spread_v, ppos+1, spread_v.size() - ppos); |
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| 270 | // dvx |
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| 271 | ppos = spread_v.find("("); |
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| 272 | spread_v.assign(spread_v, ppos+1, spread_v.size()); |
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| 273 | ppos = spread_v.find(","); |
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| 274 | blockstr.assign(spread_v, 0, ppos); |
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| 275 | dvx = get_number(blockstr + "*" + units); |
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| 276 | // dvy |
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| 277 | ppos = spread_v.find(","); |
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| 278 | spread_v.assign(spread_v, ppos+1, spread_v.size()); |
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| 279 | ppos = spread_v.find(","); |
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| 280 | blockstr.assign(spread_v, 0, ppos); |
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| 281 | dvy = get_number(blockstr + "*" + units); |
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| 282 | // dvz |
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| 283 | ppos = spread_v.find(","); |
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| 284 | spread_v.assign(spread_v, ppos+1, spread_v.size()); |
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| 285 | ppos = spread_v.find(","); |
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| 286 | blockstr.assign(spread_v, 0, ppos); |
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| 287 | dvz = get_number(blockstr + "*" + units); |
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| 288 | } |
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| 289 | else |
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| 290 | { |
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| 291 | gformat.assign( input_gen, 0, input_gen.find(",")) ; |
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| 292 | gfilename.assign(input_gen, input_gen.find(",") + 1, input_gen.size()) ; |
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| 293 | cout << hd_msg << " Opening " << gformat << " file: " << TrimSpaces(gfilename).c_str() << endl; |
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| 294 | gif.open(TrimSpaces(gfilename).c_str()); |
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| 295 | |
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| 296 | |
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| 297 | if(!gif) |
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| 298 | { |
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| 299 | cerr << hd_msg << " Can't open output file " << TrimSpaces(gfilename).c_str() << ". Exiting. " << endl; |
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| 300 | exit(1); |
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| 301 | } |
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| 302 | } |
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| 303 | |
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| 304 | |
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| 305 | // %%%%%%%%%%%%%%% |
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| 306 | // Luminosity Beam |
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| 307 | // %%%%%%%%%%%%%%% |
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| 308 | string L_beam = gemcOpt.args["LUMI_P"].args; |
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| 309 | string L_vert = gemcOpt.args["LUMI_V"].args; |
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| 310 | |
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| 311 | string L_blockstr; |
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| 312 | int L_ppos = L_beam.find(","); |
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| 313 | L_blockstr.assign(L_beam, 0, L_ppos); |
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| 314 | |
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| 315 | L_Particle = particleTable->FindParticle(L_blockstr); |
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| 316 | |
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| 317 | if(!L_Particle) |
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| 318 | { |
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| 319 | if(L_blockstr == "show_all") |
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| 320 | { |
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| 321 | for(int i=0; i<particleTable->entries(); i++) |
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| 322 | cout << hd_msg << " g4 particle: " << particleTable->GetParticleName(i) << endl; |
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| 323 | } |
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| 324 | else |
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| 325 | cout << hd_msg << " Particle " << L_blockstr << " not found in G4 table. Exiting" << endl << endl; |
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| 326 | |
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| 327 | exit(0); |
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| 328 | } |
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| 329 | |
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| 330 | // %%%%%%%%%%%%%%%%%%% |
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| 331 | // Luminosity Momentum |
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| 332 | // %%%%%%%%%%%%%%%%%%% |
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| 333 | // energy |
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| 334 | L_beam.assign(L_beam, L_ppos+1, L_beam.size()); |
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| 335 | L_ppos = L_beam.find(","); |
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| 336 | L_blockstr.assign(L_beam, 0, L_ppos); |
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| 337 | L_Mom = get_number(L_blockstr); |
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| 338 | // theta angle |
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| 339 | L_beam.assign(L_beam, L_ppos+1, L_beam.size()); |
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| 340 | L_ppos = L_beam.find(","); |
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| 341 | L_blockstr.assign(L_beam, 0, L_ppos); |
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| 342 | L_Theta = get_number(L_blockstr); |
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| 343 | // phi angle |
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| 344 | L_beam.assign(L_beam, L_ppos+1, L_beam.size()); |
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| 345 | L_ppos = L_beam.find("\""); |
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| 346 | L_blockstr.assign(L_beam, 0, L_ppos); |
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| 347 | L_Phi = get_number(L_blockstr); |
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| 348 | |
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| 349 | L_beam_dir = G4ThreeVector(cos(L_Phi/rad)*sin(L_Theta/rad), sin(L_Phi/rad)*sin(L_Theta/rad), cos(L_Theta/rad)); |
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| 350 | |
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| 351 | // %%%%%%%%%%%%%%%%% |
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| 352 | // Luminosity Vertex |
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| 353 | // %%%%%%%%%%%%%%%%% |
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| 354 | // units |
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| 355 | L_ppos = L_vert.find(")"); |
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| 356 | string L_units; |
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| 357 | L_units.assign(L_vert, L_ppos+1, L_vert.size() - L_ppos); |
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| 358 | // vx |
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| 359 | L_ppos = L_vert.find("("); |
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| 360 | L_vert.assign(L_vert, L_ppos+1, L_vert.size()); |
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| 361 | L_ppos = L_vert.find(","); |
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| 362 | L_blockstr.assign(L_vert, 0, L_ppos); |
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| 363 | L_vx = get_number(L_blockstr + "*" + L_units); |
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| 364 | // vy |
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| 365 | L_ppos = L_vert.find(","); |
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| 366 | L_vert.assign(L_vert, L_ppos+1, L_vert.size()); |
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| 367 | L_ppos = L_vert.find(","); |
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| 368 | L_blockstr.assign(L_vert, 0, L_ppos); |
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| 369 | L_vy = get_number(L_blockstr + "*" + L_units); |
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| 370 | // vz |
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| 371 | L_ppos = L_vert.find(","); |
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| 372 | L_vert.assign(L_vert, L_ppos+1, L_vert.size()); |
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| 373 | L_ppos = L_vert.find(","); |
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| 374 | L_blockstr.assign(L_vert, 0, L_ppos); |
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| 375 | L_vz = get_number(L_blockstr + "*" + L_units); |
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| 376 | |
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| 377 | L_beam_vrt = G4ThreeVector(L_vx, L_vy, L_vz); |
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| 378 | |
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| 379 | // %%%%%%%%%%%%%%%%%%%%% |
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| 380 | // Luminosity Parameters |
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| 381 | // %%%%%%%%%%%%%%%%%%%%% |
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| 382 | string L_pars = gemcOpt.args["LUMI_EVENT"].args; |
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| 383 | // NP |
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| 384 | L_ppos = L_pars.find(","); |
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| 385 | L_blockstr.assign(L_pars, 0, L_ppos); |
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| 386 | NP = atoi(L_blockstr.c_str()); |
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| 387 | // TWINDOW |
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| 388 | L_ppos = L_pars.find(","); |
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| 389 | L_pars.assign(L_pars, L_ppos+1, L_pars.size()); |
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| 390 | L_ppos = L_pars.find(","); |
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| 391 | L_blockstr.assign(L_pars, 0, L_ppos); |
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| 392 | TWINDOW = get_number(L_blockstr); |
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| 393 | // TBUNCH |
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| 394 | L_ppos = L_pars.find(","); |
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| 395 | L_pars.assign(L_pars, L_ppos+1, L_pars.size()); |
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| 396 | L_ppos = L_pars.find(","); |
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| 397 | L_blockstr.assign(L_pars, 0, L_ppos-1); |
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| 398 | TBUNCH = get_number(L_blockstr); |
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| 399 | |
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| 400 | } |
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| 401 | |
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| 402 | |
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| 403 | MPrimaryGeneratorAction::~MPrimaryGeneratorAction() |
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| 404 | { |
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| 405 | delete particleGun; |
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| 406 | gif.close(); |
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| 407 | } |
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| 408 | |
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| 409 | |
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| 417 | |
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