[819] | 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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[1196] | 25 | // |
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[1055] | 26 | // (Why only antiproton-proton, when the antiproton-nucleus is made? - M.K.) |
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| 27 | // 17.02.2009 M.Kossov, now it is recommended to use the G4QCaptureAtRest process |
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[819] | 28 | #ifndef G4ProtonAntiProtonAtRestChips_h |
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| 29 | #define G4ProtonAntiProtonAtRestChips_h |
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| 30 | |
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| 31 | #include "globals.hh" |
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| 32 | #include "G4VRestProcess.hh" |
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| 33 | #include "G4ParticleTable.hh" |
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| 34 | #include "G4Quasmon.hh" |
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| 35 | #include "G4QHadronVector.hh" |
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| 36 | #include "G4ParticleChange.hh" |
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| 37 | #include "G4LorentzVector.hh" |
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| 38 | #include "G4DynamicParticle.hh" |
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| 39 | #include "G4IonTable.hh" |
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| 40 | #include "G4Neutron.hh" |
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| 41 | #include "G4StopElementSelector.hh" |
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| 42 | #include "G4ChiralInvariantPhaseSpace.hh" |
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[962] | 43 | #include "G4HadronicProcessType.hh" |
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[819] | 44 | |
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| 45 | class G4ProtonAntiProtonAtRestChips : public G4VRestProcess |
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| 46 | { |
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| 47 | private: |
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| 48 | // hide assignment operator as private |
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| 49 | G4ProtonAntiProtonAtRestChips& operator=(const G4ProtonAntiProtonAtRestChips &right); |
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| 50 | G4ProtonAntiProtonAtRestChips(const G4ProtonAntiProtonAtRestChips& ); |
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| 51 | |
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| 52 | public: |
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| 53 | |
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[1055] | 54 | G4ProtonAntiProtonAtRestChips(const G4String& processName= |
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| 55 | "AntiProtonAnnihilationAtRest") |
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[962] | 56 | : G4VRestProcess (processName, fHadronic) |
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| 57 | { |
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| 58 | SetProcessSubType(fHadronAtRest); |
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| 59 | } |
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[819] | 60 | |
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[1055] | 61 | ~G4ProtonAntiProtonAtRestChips() {} |
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[819] | 62 | |
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| 63 | G4bool IsApplicable(const G4ParticleDefinition& aParticle) |
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| 64 | { |
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| 65 | return ( &aParticle == G4AntiProton::AntiProtonDefinition() ); |
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| 66 | } |
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| 67 | |
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| 68 | // null physics table |
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| 69 | void BuildPhysicsTable(const G4ParticleDefinition&){} |
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| 70 | |
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| 71 | G4double AtRestGetPhysicalInteractionLength(const G4Track&track, |
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[1055] | 72 | G4ForceCondition*condition); |
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[819] | 73 | |
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| 74 | // zero mean lifetime |
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| 75 | G4double GetMeanLifeTime(const G4Track& aTrack, |
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[1055] | 76 | G4ForceCondition* condition) {return 0.0;} |
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[819] | 77 | |
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| 78 | G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&); |
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| 79 | |
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| 80 | private: |
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| 81 | G4ChiralInvariantPhaseSpace theModel; |
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| 82 | G4StopElementSelector theSelector; // Assume identical laws as for muons |
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| 83 | }; |
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| 84 | |
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| 85 | inline |
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| 86 | G4VParticleChange * G4ProtonAntiProtonAtRestChips:: |
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| 87 | AtRestDoIt(const G4Track& aTrack, const G4Step&aStep) |
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| 88 | { |
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| 89 | // Create target |
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| 90 | G4Element * theTarget = theSelector.GetElement(aTrack.GetMaterial()); |
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| 91 | G4Nucleus aTargetNucleus(theTarget->GetN() ,theTarget->GetZ()); |
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| 92 | |
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| 93 | // Check model validity - note this will be a sub-branch in the ordinary stopping @@@@@@ |
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| 94 | // in the long haul. @@@@@@ |
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| 95 | if(aTrack.GetDynamicParticle()->GetDefinition() != G4AntiProton::AntiProton()) |
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| 96 | { |
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[1055] | 97 | throw G4HadronicException(__FILE__, __LINE__, |
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| 98 | "Calling G4ProtonAntiProtonAtRestChips with particle other than p-bar!!!"); |
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[819] | 99 | } |
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| 100 | if(aTargetNucleus.GetZ() != 1) |
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| 101 | { |
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[1055] | 102 | throw G4HadronicException(__FILE__, __LINE__, |
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| 103 | "Calling G4ProtonAntiProtonAtRestChips for target other than Hydrogen!!!"); |
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[819] | 104 | } |
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| 105 | |
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| 106 | // Call chips |
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| 107 | return theModel.ApplyYourself(aTrack, aTargetNucleus); |
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| 108 | } |
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| 109 | |
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| 110 | G4double G4ProtonAntiProtonAtRestChips:: |
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| 111 | AtRestGetPhysicalInteractionLength(const G4Track&track, |
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[1055] | 112 | G4ForceCondition*condition) |
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[819] | 113 | { |
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| 114 | ResetNumberOfInteractionLengthLeft(); |
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| 115 | *condition = NotForced; |
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| 116 | currentInteractionLength = GetMeanLifeTime(track, condition); |
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| 117 | #ifdef CHIPSdebug |
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| 118 | if ((currentInteractionLength <0.0) || (verboseLevel>2)) |
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| 119 | { |
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| 120 | G4cout << "G4ProtonAntiProtonAtRestChips::AtRestGetPhysicalInteractionLength "; |
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| 121 | G4cout << "[ " << GetProcessName() << "]" <<G4endl; |
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| 122 | track.GetDynamicParticle()->DumpInfo(); |
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| 123 | G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl; |
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| 124 | G4cout << "MeanLifeTime = " << currentInteractionLength/ns << "[ns]" <<G4endl; |
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| 125 | } |
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| 126 | #endif |
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| 127 | return theNumberOfInteractionLengthLeft * currentInteractionLength; |
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| 128 | } |
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| 129 | #endif |
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