| 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 | // $Id: G4QAtomicElectronScattering.hh,v 1.1 2009/11/17 10:36:54 mkossov Exp $ |
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| 27 | // GEANT4 tag $Name: hadr-chips-V09-03-08 $ |
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| 28 | // |
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| 29 | // ---------------- G4QAtomicElectronScattering header ---------------- |
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| 30 | // by Mikhail Kossov, December 2003. |
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| 31 | // Header of G4QAtomicElectronScattering class of the CHIPS Simulation Branch in GEANT4 |
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| 32 | // ------------------------------------------------------------------------------- |
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| 33 | // This is a unique CHIPS class for the Nuclear Interactions with Atomic electrons. |
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| 34 | // ------------------------------------------------------------------------------- |
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| 35 | // **************************************************************************************** |
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| 36 | // ********* This HEADER is temporary moved from the photolepton_hadron directory ********* |
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| 37 | // ******* DO NOT MAKE ANY CHANGE! With time it'll move back to photolepton...(M.K.) ****** |
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| 38 | // **************************************************************************************** |
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| 39 | // Short description: CHIPS is re3sponsible for photo- and lepto-nuclear |
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| 40 | // reactions. In particular for thr electron-nuclear reactions. At High |
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| 41 | // Energies the nucleons (including neutrons) and nuclear fragments can |
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| 42 | // interact with atomic electrons (reversed electro-nuclear reaction - |
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| 43 | // antilab), while they are missing the nucler-nuclear (ion-ion) reac- |
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| 44 | // tions. This nucleo-electron process comes "for-free" in CHIPS, as the |
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| 45 | // cross-sections of the interaction is known from the electro-nuclear |
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| 46 | // reactions. The only problem is to move the output from the antilab to |
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| 47 | // lab system. This is what this process is aiming to do. It can be used |
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| 48 | // for the ion transport in Geant4. |
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| 49 | // --------------------------------------------------------------------- |
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| 50 | |
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| 51 | #ifndef G4QAtomicElectronScattering_hh |
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| 52 | #define G4QAtomicElectronScattering_hh |
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| 53 | |
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| 54 | // GEANT4 Headers |
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| 55 | #include "globals.hh" |
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| 56 | #include "G4ios.hh" |
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| 57 | #include "Randomize.hh" |
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| 58 | #include "G4VDiscreteProcess.hh" |
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| 59 | #include "G4Track.hh" |
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| 60 | #include "G4Step.hh" |
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| 61 | #include "G4ParticleTypes.hh" |
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| 62 | #include "G4VParticleChange.hh" |
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| 63 | #include "G4ParticleDefinition.hh" |
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| 64 | #include "G4DynamicParticle.hh" |
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| 65 | #include "G4ThreeVector.hh" |
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| 66 | #include "G4LorentzVector.hh" |
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| 67 | |
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| 68 | // CHIPS Headers |
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| 69 | #include "G4QEnvironment.hh" |
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| 70 | #include "G4VQCrossSection.hh" |
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| 71 | #include "G4QIsotope.hh" |
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| 72 | #include "G4QElectronNuclearCrossSection.hh" |
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| 73 | #include "G4QPhotonNuclearCrossSection.hh" |
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| 74 | #include "G4QMuonNuclearCrossSection.hh" |
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| 75 | #include "G4QTauNuclearCrossSection.hh" |
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| 76 | #include "G4QPDGToG4Particle.hh" |
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| 77 | |
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| 78 | class G4QAtomicElectronScattering : public G4VDiscreteProcess |
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| 79 | { |
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| 80 | public: |
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| 81 | |
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| 82 | // Constructor |
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| 83 | G4QAtomicElectronScattering(const G4String& processName ="CHIPSNuclearCollision"); |
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| 84 | |
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| 85 | // Destructor |
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| 86 | ~G4QAtomicElectronScattering(); |
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| 87 | |
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| 88 | G4bool IsApplicable(const G4ParticleDefinition& particle); |
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| 89 | |
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| 90 | G4double GetMeanFreePath(const G4Track& aTrack, G4double previousStepSize, |
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| 91 | G4ForceCondition* condition); |
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| 92 | // It returns the MeanFreePath of the process for the current track : |
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| 93 | // (energy, material) |
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| 94 | // The previousStepSize and G4ForceCondition* are not used. |
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| 95 | // This function overloads a virtual function of the base class. |
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| 96 | // It is invoked by the ProcessManager of the Particle. |
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| 97 | |
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| 98 | |
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| 99 | G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep); |
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| 100 | // It computes the final state of the process (at end of step), |
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| 101 | // returned as a ParticleChange object. |
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| 102 | // This function overloads a virtual function of the base class. |
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| 103 | // It is invoked by the ProcessManager of the Particle. |
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| 104 | |
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| 105 | |
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| 106 | G4LorentzVector GetEnegryMomentumConservation(); |
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| 107 | |
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| 108 | G4int GetNumberOfNeutronsInTarget(); |
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| 109 | |
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| 110 | // Static functions |
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| 111 | static void SetManual(); |
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| 112 | static void SetStandard(); |
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| 113 | static void SetParameters(G4double temper=180., G4double ssin2g=.1, G4double etaetap=.3, |
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| 114 | G4double fN=0., G4double fD=0., G4double cP=1., G4double mR=1., |
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| 115 | G4int npCHIPSWorld=234, G4double solAn=.5, G4bool efFlag=false, |
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| 116 | G4double piTh=141.4,G4double mpi2=20000.,G4double dinum=1880.); |
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| 117 | |
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| 118 | private: |
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| 119 | |
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| 120 | // Hide assignment operator as private |
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| 121 | G4QAtomicElectronScattering& operator=(const G4QAtomicElectronScattering &right); |
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| 122 | |
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| 123 | // Copy constructor |
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| 124 | G4QAtomicElectronScattering(const G4QAtomicElectronScattering&); |
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| 125 | |
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| 126 | // BODY |
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| 127 | // Static Parameters |
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| 128 | static G4bool manualFlag; // If false then standard parameters are used |
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| 129 | static G4int nPartCWorld; // The#of particles for hadronization (limit of A of fragm.) |
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| 130 | // -> Parameters of the G4Quasmon class: |
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| 131 | static G4double Temperature; // Quasmon Temperature |
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| 132 | static G4double SSin2Gluons; // Percent of ssbar sea in a constituen gluon |
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| 133 | static G4double EtaEtaprime; // Part of eta-prime in all etas |
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| 134 | // -> Parameters of the G4QNucleus class: |
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| 135 | static G4double freeNuc; // probability of the quasi-free baryon on surface |
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| 136 | static G4double freeDib; // probability of the quasi-free dibaryon on surface |
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| 137 | static G4double clustProb; // clusterization probability in dense region |
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| 138 | static G4double mediRatio; // relative vacuum hadronization probability |
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| 139 | // -> Parameters of the G4QEnvironment class: |
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| 140 | static G4bool EnergyFlux; // Flag for Energy Flux use instead of Multy Quasmon |
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| 141 | static G4double SolidAngle; // Part of Solid Angle to capture secondaries(@@A-dep) |
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| 142 | static G4double PiPrThresh; // Pion Production Threshold for gammas |
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| 143 | static G4double M2ShiftVir; // Shift for M2=-Q2=m_pi^2 of the virtual gamma |
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| 144 | static G4double DiNuclMass; // Double Nucleon Mass for virtual normalization |
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| 145 | // |
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| 146 | // Working parameters |
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| 147 | G4VQCrossSection* theCS; |
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| 148 | G4LorentzVector EnMomConservation; // Residual of Energy/Momentum Cons. |
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| 149 | G4int nOfNeutrons; // #of neutrons in the target nucleus |
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| 150 | |
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| 151 | // Modifires for the reaction |
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| 152 | G4double Time; // Time shift of the capture reaction |
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| 153 | G4double EnergyDeposition; // Energy deposited in the reaction |
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| 154 | }; |
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| 155 | #endif |
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| 156 | |
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