[1199] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * DISCLAIMER * |
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| 4 | // * * |
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| 5 | // * The following disclaimer summarizes all the specific disclaimers * |
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| 6 | // * of contributors to this software. The specific disclaimers,which * |
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| 7 | // * govern, are listed with their locations in: * |
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| 8 | // * http://cern.ch/geant4/license * |
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| 9 | // * * |
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| 10 | // * Neither the authors of this software system, nor their employing * |
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| 11 | // * institutes,nor the agencies providing financial support for this * |
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| 12 | // * work make any representation or warranty, express or implied, * |
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| 13 | // * regarding this software system or assume any liability for its * |
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| 14 | // * use. * |
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| 15 | // * * |
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| 16 | // * This code implementation is the intellectual property of the * |
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| 17 | // * GEANT4 collaboration. * |
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| 18 | // * By copying, distributing or modifying the Program (or any work * |
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| 19 | // * based on the Program) you indicate your acceptance of this * |
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| 20 | // * statement, and all its terms. * |
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| 21 | // ******************************************************************** |
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| 22 | // |
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| 23 | #include "G4ScattererStub.hh" |
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| 24 | #include "G4Proton.hh" |
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| 25 | #include "G4Neutron.hh" |
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| 26 | |
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| 27 | |
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| 28 | int main(int argc, char ** argv) |
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| 29 | { |
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| 30 | G4int nEvents; |
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| 31 | if(argc == 2) |
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| 32 | nEvents = atoi(argv[1]); |
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| 33 | else |
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| 34 | { |
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| 35 | cout << "Input number of events: "; |
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| 36 | cin >> nEvents; |
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| 37 | } |
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| 38 | |
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| 39 | G4ScattererStub scatterer; |
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| 40 | |
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| 41 | G4ParticleDefinition * proton = G4Proton::Proton(); |
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| 42 | G4ParticleDefinition * neutron = G4Neutron::Neutron(); |
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| 43 | G4double pmass = proton->GetPDGMass(); |
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| 44 | G4double nmass = neutron->GetPDGMass(); |
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| 45 | |
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| 46 | G4ThreeVector pos(0,0,0); |
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| 47 | |
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| 48 | for(G4int i = 0; i < nEvents; ++i) |
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| 49 | { |
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| 50 | G4double p = 1000*MeV*G4UniformRand(); |
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| 51 | G4double theta = 2.0*G4UniformRand()-1.0; |
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| 52 | theta = acos(theta); |
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| 53 | G4double phi = G4UniformRand()*2*pi; |
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| 54 | G4ThreeVector direction(sin(theta)*cos(phi), |
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| 55 | sin(theta)*sin(phi), cos(theta)); |
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| 56 | G4LorentzVector mom1(p*direction, sqrt(p*p+pmass*pmass)); |
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| 57 | p = 1000*MeV*G4UniformRand(); |
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| 58 | theta = 2.0*G4UniformRand()-1.0; |
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| 59 | theta = acos(theta); |
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| 60 | phi = G4UniformRand()*2*pi; |
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| 61 | G4ThreeVector direction2(sin(theta)*cos(phi), sin(theta)*sin(phi), cos(theta)); |
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| 62 | G4LorentzVector mom2(p*direction2, sqrt(p*p+nmass*nmass)); |
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| 63 | |
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| 64 | G4KineticTrack kt1(proton, 0.0, pos, mom1); |
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| 65 | G4KineticTrack kt2(proton, 0.0, pos, mom2); |
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| 66 | |
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| 67 | G4KineticTrackVectorSTL * products = scatterer.Scatter(kt1, kt2); |
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| 68 | G4KineticTrackVectorSTL::iterator i = products->begin(); |
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| 69 | G4LorentzVector fmom1 = (*i)->Get4Momentum(); |
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| 70 | ++i; |
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| 71 | G4LorentzVector fmom2 = (*i)->Get4Momentum(); |
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| 72 | G4LorentzVector diff = fmom1+fmom2-mom1-mom2; |
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| 73 | G4LorentzVector diff1 = fmom1-mom1; |
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| 74 | G4LorentzVector diff2 = fmom2-mom2; |
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| 75 | cout << diff1.x() << " " << diff1.y() << " " << diff1.z() << " " |
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| 76 | << diff1.t() << " " |
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| 77 | << diff2.x() << " " << diff2.y() << " " << diff2.z() << " " |
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| 78 | << diff2.t() << " " |
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| 79 | << diff.x() << " " << diff.y() << " " << diff.z() << " " |
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| 80 | << diff.t() << " " |
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| 81 | << fmom1.m() << " " << fmom2.m() << endl; |
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| 82 | } |
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| 83 | |
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| 84 | |
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| 85 | return 0; |
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| 86 | } |
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| 87 | |
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| 88 | |
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| 89 | |
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| 90 | |
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