Gabriele Cosmo
429 lines
12 KiB
C++
429 lines
12 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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//
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// -----------------------------------------------------------------------------
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// GEANT 4 class header file
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//
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// History: first implementation, A. Feliciello, 20th May 1998
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// -----------------------------------------------------------------------------
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#ifndef G4KineticTrack_h
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#define G4KineticTrack_h 1
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#include <CLHEP/Units/PhysicalConstants.h>
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#include "globals.hh"
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#include "G4ios.hh"
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#include "Randomize.hh"
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#include "G4ThreeVector.hh"
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#include "G4LorentzVector.hh"
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#include "G4VKineticNucleon.hh"
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#include "G4Nucleon.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4VDecayChannel.hh"
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#include "G4Log.hh"
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// #include "G4Allocator.hh"
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class G4KineticTrackVector;
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class G4KineticTrack : public G4VKineticNucleon
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{
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public:
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G4KineticTrack();
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G4KineticTrack(const G4KineticTrack& right);
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G4KineticTrack(const G4ParticleDefinition* aDefinition,
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G4double aFormationTime,
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const G4ThreeVector& aPosition,
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const G4LorentzVector& a4Momentum);
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G4KineticTrack(G4Nucleon * nucleon,
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const G4ThreeVector& aPosition,
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const G4LorentzVector& a4Momentum);
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~G4KineticTrack();
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G4KineticTrack& operator=(const G4KineticTrack& right);
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G4bool operator==(const G4KineticTrack& right) const;
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G4bool operator!=(const G4KineticTrack& right) const;
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/*
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inline void *operator new(size_t);
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inline void operator delete(void *aTrack);
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*/
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const G4ParticleDefinition* GetDefinition() const;
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void SetDefinition(const G4ParticleDefinition* aDefinition);
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G4double GetFormationTime() const;
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void SetFormationTime(G4double aFormationTime);
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const G4ThreeVector& GetPosition() const;
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void SetPosition(const G4ThreeVector aPosition);
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const G4LorentzVector& Get4Momentum() const;
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void Set4Momentum(const G4LorentzVector& a4Momentum);
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void Update4Momentum(G4double aEnergy); // update E and p, not changing mass
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void Update4Momentum(const G4ThreeVector & aMomentum); // idem
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void SetTrackingMomentum(const G4LorentzVector& a4Momentum);
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void UpdateTrackingMomentum(G4double aEnergy); // update E and p, not changing mass
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void UpdateTrackingMomentum(const G4ThreeVector & aMomentum); // idem
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const G4LorentzVector& GetTrackingMomentum() const;
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G4double SampleResidualLifetime();
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void Hit();
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void SetNucleon(G4Nucleon * aN) {theNucleon = aN;}
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G4bool IsParticipant() const;
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G4KineticTrackVector* Decay();
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// LB move to public (before was private) LB
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G4double* GetActualWidth() const;
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G4double GetActualMass() const;
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G4int GetnChannels() const;
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// position relativ to nucleus "state"
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enum CascadeState {undefined, outside, going_in, inside,
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going_out, gone_out, captured, miss_nucleus };
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CascadeState SetState(const CascadeState new_state);
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CascadeState GetState() const;
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void SetProjectilePotential(const G4double aPotential);
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G4double GetProjectilePotential() const;
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private:
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void SetnChannels(const G4int aChannel);
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void SetActualWidth(G4double* anActualWidth);
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G4double EvaluateTotalActualWidth();
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G4double EvaluateCMMomentum (const G4double mass,
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const G4double* m_ij) const;
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G4double IntegrateCMMomentum(const G4double lowerLimit) const;
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G4double IntegrateCMMomentum(const G4double lowerLimit ,const G4double polemass) const;
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G4double IntegrateCMMomentum2() const;
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public:
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G4double BrWig(const G4double Gamma,
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const G4double rmass,
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const G4double mass) const;
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private:
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G4double IntegrandFunction1 (G4double xmass) const;
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G4double IntegrandFunction2 (G4double xmass) const;
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G4double IntegrandFunction3 (G4double xmass) const;
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G4double IntegrandFunction4 (G4double xmass) const;
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public:
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// friend G4double IntegrandFunction3 (G4double xmass);
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// friend G4double IntegrandFunction4 (G4double xmass);
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private:
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const G4ParticleDefinition* theDefinition;
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G4double theFormationTime;
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G4ThreeVector thePosition;
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G4LorentzVector the4Momentum;
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G4LorentzVector theFermi3Momentum;
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G4LorentzVector theTotal4Momentum;
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G4Nucleon * theNucleon;
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G4int nChannels;
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G4double theActualMass;
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G4double* theActualWidth;
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// Temporary storage for daughter masses and widths
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// (needed because Integrand Function cannot take > 1 argument)
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G4double* theDaughterMass;
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G4double* theDaughterWidth;
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CascadeState theStateToNucleus;
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G4double theProjectilePotential;
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};
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// extern G4Allocator<G4KineticTrack> theKTAllocator;
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// Class G4KineticTrack
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/*
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inline void * G4KineticTrack::operator new(size_t)
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{
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void * aT;
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aT = (void *) theKTAllocator.MallocSingle();
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return aT;
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}
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inline void G4KineticTrack::operator delete(void * aT)
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{
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theKTAllocator.FreeSingle((G4KineticTrack *) aT);
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}
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*/
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inline const G4ParticleDefinition* G4KineticTrack::GetDefinition() const
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{
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return theDefinition;
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}
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inline void G4KineticTrack::SetDefinition(const G4ParticleDefinition* aDefinition)
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{
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theDefinition = aDefinition;
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}
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inline G4double G4KineticTrack::GetFormationTime() const
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{
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return theFormationTime;
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}
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inline void G4KineticTrack::SetFormationTime(G4double aFormationTime)
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{
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theFormationTime = aFormationTime;
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}
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inline const G4ThreeVector& G4KineticTrack::GetPosition() const
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{
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return thePosition;
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}
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inline void G4KineticTrack::SetPosition(const G4ThreeVector aPosition)
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{
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thePosition = aPosition;
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}
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inline const G4LorentzVector& G4KineticTrack::Get4Momentum() const
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{
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return theTotal4Momentum;
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}
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inline const G4LorentzVector& G4KineticTrack::GetTrackingMomentum() const
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{
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return the4Momentum;
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}
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inline void G4KineticTrack::Set4Momentum(const G4LorentzVector& a4Momentum)
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{
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// set the4Momentum and update theTotal4Momentum
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theTotal4Momentum=a4Momentum;
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the4Momentum = theTotal4Momentum;
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theFermi3Momentum=G4LorentzVector(0);
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}
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inline void G4KineticTrack::Update4Momentum(G4double aEnergy)
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{
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// update the4Momentum with aEnergy at constant mass (the4Momentum.mag()
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// updates theTotal4Momentum as well.
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G4double newP(0);
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G4double mass2=theTotal4Momentum.mag2();
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if ( sqr(aEnergy) > mass2 )
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{
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newP = std::sqrt(sqr(aEnergy) - mass2 );
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} else
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{
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aEnergy=std::sqrt(mass2);
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}
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Set4Momentum(G4LorentzVector(newP*the4Momentum.vect().unit(), aEnergy));
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}
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inline void G4KineticTrack::Update4Momentum(const G4ThreeVector & aMomentum)
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{
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// update the4Momentum with aMomentum at constant mass (the4Momentum.mag()
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// updates theTotal4Momentum as well.
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G4double newE=std::sqrt(theTotal4Momentum.mag2() + aMomentum.mag2());
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Set4Momentum(G4LorentzVector(aMomentum, newE));
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}
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inline void G4KineticTrack::SetTrackingMomentum(const G4LorentzVector& aMomentum)
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{
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// set the4Momentum and update theTotal4Momentum, keep the mass of aMomentum
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the4Momentum = aMomentum;
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theTotal4Momentum=the4Momentum+theFermi3Momentum;
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// keep mass of aMomentum for the total momentum
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G4double mass2 = aMomentum.mag2();
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G4double p2=theTotal4Momentum.vect().mag2();
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theTotal4Momentum.setE(std::sqrt(mass2+p2));
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}
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inline void G4KineticTrack::UpdateTrackingMomentum(G4double aEnergy)
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{
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// update the4Momentum with aEnergy at constant mass (the4Momentum.mag()
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// updates theTotal4Momentum as well.
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G4double newP(0);
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G4double mass2=theTotal4Momentum.mag2();
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if ( sqr(aEnergy) > mass2 )
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{
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newP = std::sqrt(sqr(aEnergy) - mass2 );
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} else
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{
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aEnergy=std::sqrt(mass2);
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}
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SetTrackingMomentum(G4LorentzVector(newP*the4Momentum.vect().unit(), aEnergy));
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}
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inline void G4KineticTrack::UpdateTrackingMomentum(const G4ThreeVector & aMomentum)
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{
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// update the4Momentum with aMomentum at constant mass (the4Momentum.mag()
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// updates theTotal4Momentum as well.
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G4double newE=std::sqrt(theTotal4Momentum.mag2() + aMomentum.mag2());
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SetTrackingMomentum(G4LorentzVector(aMomentum, newE));
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}
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inline G4double G4KineticTrack::GetActualMass() const
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{
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return std::sqrt(std::abs(the4Momentum.mag2()));
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}
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inline G4int G4KineticTrack::GetnChannels() const
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{
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return nChannels;
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}
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inline void G4KineticTrack::SetnChannels(const G4int numberOfChannels)
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{
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nChannels = numberOfChannels;
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}
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inline G4double* G4KineticTrack::GetActualWidth() const
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{
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return theActualWidth;
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}
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inline void G4KineticTrack::SetActualWidth(G4double* anActualWidth)
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{
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theActualWidth = anActualWidth;
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}
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inline G4double G4KineticTrack::EvaluateTotalActualWidth()
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{
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G4int index;
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G4double theTotalActualWidth = 0.0;
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for (index = nChannels - 1; index >= 0; index--)
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{
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theTotalActualWidth += theActualWidth[index];
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}
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return theTotalActualWidth;
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}
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inline G4double G4KineticTrack::SampleResidualLifetime()
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{
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G4double theTotalActualWidth = this->EvaluateTotalActualWidth();
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G4double tau = CLHEP::hbar_Planck * (-1.0 / theTotalActualWidth);
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G4double theResidualLifetime = tau * G4Log(G4UniformRand());
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return theResidualLifetime*the4Momentum.gamma();
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}
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inline G4double G4KineticTrack::EvaluateCMMomentum(const G4double mass,
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const G4double* m_ij) const
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{
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G4double theCMMomentum;
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if((m_ij[0]+m_ij[1])<mass)
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theCMMomentum = 1 / (2 * mass) *
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std::sqrt (((mass * mass) - (m_ij[0] + m_ij[1]) * (m_ij[0] + m_ij[1])) *
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((mass * mass) - (m_ij[0] - m_ij[1]) * (m_ij[0] - m_ij[1])));
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else
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theCMMomentum=0.;
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return theCMMomentum;
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}
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inline G4double G4KineticTrack::BrWig(const G4double Gamma, const G4double rmass, const G4double mass) const
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{
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G4double Norm = CLHEP::twopi;
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return (Gamma/((mass-rmass)*(mass-rmass)+Gamma*Gamma/4.))/Norm;
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}
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inline
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void G4KineticTrack::Hit()
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{
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if(theNucleon)
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{
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theNucleon->Hit(1);
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}
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}
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inline
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G4bool G4KineticTrack::IsParticipant() const
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{
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if(!theNucleon) return true;
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return theNucleon->AreYouHit();
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}
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inline
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G4KineticTrack::CascadeState G4KineticTrack::GetState() const
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{
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return theStateToNucleus;
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}
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inline
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G4KineticTrack::CascadeState G4KineticTrack::SetState(const CascadeState new_state)
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{
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CascadeState old_state=theStateToNucleus;
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theStateToNucleus=new_state;
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return old_state;
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}
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inline
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void G4KineticTrack::SetProjectilePotential(G4double aPotential)
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{
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theProjectilePotential = aPotential;
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}
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inline
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G4double G4KineticTrack::GetProjectilePotential() const
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{
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return theProjectilePotential;
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}
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#endif
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