[807] | 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 | // $Id: XrayFluoPlanePrimaryGeneratorAction.cc |
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| 28 | // GEANT4 tag $Name: |
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| 29 | // |
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| 30 | // Author: Alfonso Mantero (Alfonso.Mantero@ge.infn.it) |
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| 31 | // |
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| 32 | // History: |
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| 33 | // ----------- |
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| 34 | // 02 Sep 2003 Alfonso Mantero created |
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| 35 | // |
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| 36 | // ------------------------------------------------------------------- |
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| 37 | |
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| 38 | #include "XrayFluoMercuryPrimaryGeneratorAction.hh" |
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| 39 | #include "G4DataVector.hh" |
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| 40 | #include "XrayFluoMercuryDetectorConstruction.hh" |
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| 41 | #include "XrayFluoMercuryPrimaryGeneratorMessenger.hh" |
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| 42 | #include "XrayFluoRunAction.hh" |
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| 43 | #include "G4Event.hh" |
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| 44 | #include "G4ParticleGun.hh" |
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| 45 | #include "G4ParticleTable.hh" |
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| 46 | #include "G4ParticleDefinition.hh" |
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| 47 | #include "Randomize.hh" |
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| 48 | #include "XrayFluoAnalysisManager.hh" |
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| 49 | #include "XrayFluoDataSet.hh" |
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| 50 | |
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| 51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 52 | |
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| 53 | XrayFluoMercuryPrimaryGeneratorAction::XrayFluoMercuryPrimaryGeneratorAction(XrayFluoMercuryDetectorConstruction* XrayFluoDC) |
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| 54 | :globalFlag(false),spectrum("off") |
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| 55 | { |
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| 56 | |
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| 57 | XrayFluoDetector = XrayFluoDC; |
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| 58 | |
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| 59 | G4int n_particle = 1; |
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| 60 | particleGun = new G4ParticleGun(n_particle); |
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| 61 | |
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| 62 | //create a messenger for this class |
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| 63 | gunMessenger = new XrayFluoMercuryPrimaryGeneratorMessenger(this); |
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| 64 | runManager = new XrayFluoRunAction(); |
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| 65 | |
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| 66 | // default particle kinematic |
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| 67 | |
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| 68 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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| 69 | G4String particleName; |
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| 70 | G4ParticleDefinition* particle |
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| 71 | = particleTable->FindParticle(particleName="gamma"); |
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| 72 | particleGun->SetParticleDefinition(particle); |
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| 73 | particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.)); |
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| 74 | |
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| 75 | |
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| 76 | particleGun->SetParticleEnergy(10.*keV); |
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| 77 | G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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| 78 | particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position)); |
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| 79 | |
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| 80 | G4cout << "XrayFluoMercuryPrimaryGeneratorAction created" << G4endl; |
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| 81 | |
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| 82 | } |
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| 83 | |
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| 84 | |
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| 85 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 86 | |
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| 87 | XrayFluoMercuryPrimaryGeneratorAction::~XrayFluoMercuryPrimaryGeneratorAction() |
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| 88 | { |
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| 89 | delete particleGun; |
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| 90 | delete gunMessenger; |
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| 91 | delete runManager; |
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| 92 | |
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| 93 | G4cout << "XrayFluoMercuryPrimaryGeneratorAction deleted" << G4endl; |
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| 94 | |
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| 95 | } |
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| 96 | |
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| 97 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 98 | |
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| 99 | void XrayFluoMercuryPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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| 100 | { |
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| 101 | //this function is called at the begining of event |
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| 102 | // |
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| 103 | |
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| 104 | // Conidering the sunas a Poin-like source. |
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| 105 | |
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| 106 | G4double z0 = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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| 107 | G4double y0 = 0.*m, x0 = 0.*m; |
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| 108 | |
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| 109 | |
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| 110 | // Let's try to illuminate only the prtion of Mercury surface that can be seen by the detector. |
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| 111 | |
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| 112 | G4double spacecraftLatitude = XrayFluoDetector->GetOrbitInclination(); |
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| 113 | G4double mercuryDia = XrayFluoDetector->GetMercuryDia(); |
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| 114 | G4double sunDia = XrayFluoDetector->GetSunDia(); |
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| 115 | G4double opticField = XrayFluoDetector->GetOpticAperture(); |
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| 116 | |
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| 117 | |
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| 118 | G4double a = 2*std::tan(opticField/2); |
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| 119 | |
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| 120 | // if (!pointLikeFlag) { |
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| 121 | |
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| 122 | // let's decide from wich point of the sun surface the particle is coming: |
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| 123 | |
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| 124 | G4double theta = pi/2. * G4UniformRand(); |
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| 125 | G4double phi = 2. * pi * G4UniformRand(); |
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| 126 | G4double rho = sunDia/2; |
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| 127 | |
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| 128 | G4double sunPosX = x0 + rho * std::sin(theta) * std::cos(phi); |
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| 129 | G4double sunPosY = y0 + rho * std::sin(theta) * std::sin(phi); |
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| 130 | G4double sunPosZ = z0 + rho * std::cos(theta); |
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| 131 | |
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| 132 | particleGun->SetParticlePosition(G4ThreeVector(sunPosX,sunPosY,sunPosZ)); |
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| 133 | |
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| 134 | // the angle at the center of Mercury subtending the area seen by the optics: |
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| 135 | G4double alpha = 2 * a/mercuryDia; |
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| 136 | |
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| 137 | if(!globalFlag){ |
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| 138 | theta = alpha * G4UniformRand() + (180.*deg - spacecraftLatitude)-alpha/2.; |
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| 139 | phi = alpha * G4UniformRand() + 90. * deg - alpha/2.; |
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| 140 | } |
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| 141 | |
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| 142 | else if(globalFlag){ |
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| 143 | theta = pi/2. * rad * G4UniformRand() + 90.*deg ; //was 900., probably an error |
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| 144 | phi = 2*pi*rad * G4UniformRand() ; |
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| 145 | } |
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| 146 | |
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| 147 | rho = mercuryDia/2.; |
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| 148 | |
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| 149 | G4double mercuryPosX = rho * std::sin(theta) * std::cos(phi); |
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| 150 | G4double mercuryPosY = rho * std::sin(theta) * std::sin(phi); |
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| 151 | G4double mercuryPosZ = rho * std::cos(theta); |
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| 152 | |
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| 153 | particleGun->SetParticleMomentumDirection( |
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| 154 | G4ThreeVector(mercuryPosX-sunPosX ,mercuryPosY-sunPosY,mercuryPosZ-sunPosZ)); |
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| 155 | |
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| 156 | // } |
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| 157 | // if (pointLikeFlag) { |
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| 158 | |
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| 159 | // // theta is the angle that the mean direction of the incident light (on the desired |
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| 160 | // // point of the surface of Mercury) makes with the Z-axis |
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| 161 | // G4double theta = std::asin( mercuryDia/2. * std::sin(spacecraftLatitude) / |
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| 162 | // std::sqrt(std::pow(z0,2)+std::pow(mercuryDia/2.,2)-2*mercuryDia/2.*z0*std::cos(spacecraftLatitude)) ); |
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| 163 | |
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| 164 | // // on the y axis, the light emitted from the Sun must be in [theta-phi;theta+phi] |
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| 165 | // G4double phi = std::asin( mercuryDia/2.*std::sin(spacecraftLatitude) + a*std::cos(spacecraftLatitude) / |
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| 166 | // std::sqrt( std::pow(mercuryDia/2.*std::sin(spacecraftLatitude) + a*std::cos(spacecraftLatitude) , 2) + |
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| 167 | // std::pow(z0 - mercuryDia/2.*std::cos(spacecraftLatitude) - a*std::sin(spacecraftLatitude) , 2)) ) |
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| 168 | // - theta; |
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| 169 | |
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| 170 | // // on the x axis, the light emitted from the Sun must be in [-zeta;zeta] |
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| 171 | // G4double zeta = std::atan( a/std::sqrt(std::pow(z0,2)+std::pow(mercuryDia,2)-2*mercuryDia*z0*std::cos(spacecraftLatitude)) ); |
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| 172 | |
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| 173 | |
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| 174 | |
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| 175 | // //alpha in [-zeta;zeta] |
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| 176 | // G4double alpha = (2*zeta)*G4UniformRand() - zeta; |
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| 177 | // //beta in [theta-phi;theta+phi] |
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| 178 | // G4double beta = (G4UniformRand()*2*phi) - phi + theta; |
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| 179 | |
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| 180 | // G4double dirY = std::sin(beta); |
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| 181 | // G4double dirX = std::sin(alpha); |
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| 182 | |
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| 183 | // particleGun->SetParticleMomentumDirection(G4ThreeVector(dirX.,dirY,1.)); |
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| 184 | |
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| 185 | // particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0)); |
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| 186 | |
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| 187 | // } |
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| 188 | |
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| 189 | |
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| 190 | |
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| 191 | //shoot particles according to a certain spectrum |
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| 192 | if (spectrum =="on") |
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| 193 | { |
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| 194 | G4String particle = particleGun->GetParticleDefinition() |
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| 195 | ->GetParticleName(); |
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| 196 | if(particle == "proton"|| particle == "alpha") |
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| 197 | { |
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| 198 | G4DataVector* energies = runManager->GetEnergies(); |
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| 199 | G4DataVector* data = runManager->GetData(); |
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| 200 | |
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| 201 | G4double sum = runManager->GetDataSum(); |
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| 202 | G4double partSum = 0; |
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| 203 | G4int j = 0; |
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| 204 | G4double random= sum*G4UniformRand(); |
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| 205 | while (partSum<random) |
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| 206 | { |
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| 207 | partSum += (*data)[j]; |
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| 208 | j++; |
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| 209 | } |
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| 210 | |
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| 211 | particleGun->SetParticleEnergy((*energies)[j]); |
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| 212 | |
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| 213 | } |
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| 214 | else if (particle == "gamma") |
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| 215 | { |
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| 216 | const XrayFluoDataSet* dataSet = runManager->GetGammaSet(); |
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| 217 | |
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| 218 | G4int i = 0; |
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| 219 | G4int id = 0; |
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| 220 | G4double minEnergy = 0. * keV; |
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| 221 | G4double particleEnergy= 0.; |
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| 222 | G4double maxEnergy = 10. * keV; |
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| 223 | G4double energyRange = maxEnergy - minEnergy; |
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| 224 | |
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| 225 | while ( i == 0) |
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| 226 | { |
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| 227 | G4double random = G4UniformRand(); |
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| 228 | |
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| 229 | G4double randomNum = G4UniformRand(); //*5.0E6; |
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| 230 | |
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| 231 | particleEnergy = (random*energyRange) + minEnergy; |
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| 232 | |
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| 233 | if ((dataSet->FindValue(particleEnergy,id)) > randomNum) |
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| 234 | { |
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| 235 | i = 1; |
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| 236 | |
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| 237 | } |
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| 238 | } |
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| 239 | particleGun->SetParticleEnergy(particleEnergy); |
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| 240 | } |
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| 241 | } |
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| 242 | |
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| 243 | |
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| 244 | #ifdef G4ANALYSIS_USE |
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| 245 | |
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| 246 | G4double partEnergy = particleGun->GetParticleEnergy(); |
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| 247 | XrayFluoAnalysisManager* analysis = XrayFluoAnalysisManager::getInstance(); |
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| 248 | analysis->analysePrimaryGenerator(partEnergy/keV); |
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| 249 | |
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| 250 | #endif |
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| 251 | |
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| 252 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 253 | } |
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| 254 | |
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| 255 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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