Geant4  10.02.p03
Public Member Functions | Private Member Functions | Private Attributes | List of all members
G4PolarizedMollerBhabhaModel Class Reference

#include <G4PolarizedMollerBhabhaModel.hh>

Inheritance diagram for G4PolarizedMollerBhabhaModel:
Collaboration diagram for G4PolarizedMollerBhabhaModel:

Public Member Functions

 G4PolarizedMollerBhabhaModel (const G4ParticleDefinition *p=0, const G4String &nam="PolarizedMollerBhabha")
 
virtual ~G4PolarizedMollerBhabhaModel ()
 
virtual G4double ComputeCrossSectionPerElectron (const G4ParticleDefinition *, G4double kinEnergy, G4double cut, G4double emax)
 
virtual void SampleSecondaries (std::vector< G4DynamicParticle *> *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy)
 
void SetTargetPolarization (const G4ThreeVector &pTarget)
 
void SetBeamPolarization (const G4ThreeVector &pBeam)
 
const G4StokesVector & GetTargetPolarization ()
 
const G4StokesVector & GetBeamPolarization ()
 
const G4StokesVector & GetFinalElectronPolarization ()
 
const G4StokesVector & GetFinalPositronPolarization ()
 
- Public Member Functions inherited from G4MollerBhabhaModel
 G4MollerBhabhaModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="MollerBhabha")
 
virtual ~G4MollerBhabhaModel ()
 
virtual void Initialise (const G4ParticleDefinition *, const G4DataVector &)
 
virtual G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kineticEnergy, G4double Z, G4double A, G4double cutEnergy, G4double maxEnergy)
 
virtual G4double CrossSectionPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
 
virtual G4double ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy)
 
- Public Member Functions inherited from G4VEmModel
 G4VEmModel (const G4String &nam)
 
virtual ~G4VEmModel ()
 
virtual void InitialiseLocal (const G4ParticleDefinition *, G4VEmModel *masterModel)
 
virtual void InitialiseForMaterial (const G4ParticleDefinition *, const G4Material *)
 
virtual void InitialiseForElement (const G4ParticleDefinition *, G4int Z)
 
virtual G4double GetPartialCrossSection (const G4Material *, G4int, const G4ParticleDefinition *, G4double)
 
virtual G4double ComputeCrossSectionPerShell (const G4ParticleDefinition *, G4int Z, G4int shellIdx, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
virtual G4double ChargeSquareRatio (const G4Track &)
 
virtual G4double GetChargeSquareRatio (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual G4double GetParticleCharge (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual void StartTracking (G4Track *)
 
virtual void CorrectionsAlongStep (const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double &eloss, G4double &niel, G4double length)
 
virtual G4double Value (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy)
 
virtual G4double MinPrimaryEnergy (const G4Material *, const G4ParticleDefinition *, G4double cut=0.0)
 
virtual G4double MinEnergyCut (const G4ParticleDefinition *, const G4MaterialCutsCouple *)
 
virtual void SetupForMaterial (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual void DefineForRegion (const G4Region *)
 
virtual void ModelDescription (std::ostream &outFile) const
 
void InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)
 
std::vector< G4EmElementSelector * > * GetElementSelectors ()
 
void SetElementSelectors (std::vector< G4EmElementSelector *> *)
 
G4double ComputeDEDX (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
 
G4double CrossSection (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4double ComputeMeanFreePath (const G4ParticleDefinition *, G4double kineticEnergy, const G4Material *, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, const G4Element *, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4int SelectIsotopeNumber (const G4Element *)
 
const G4Element * SelectRandomAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4Element * SelectRandomAtom (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4int SelectRandomAtomNumber (const G4Material *)
 
void SetParticleChange (G4VParticleChange *, G4VEmFluctuationModel *f=0)
 
void SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)
 
G4ElementData * GetElementData ()
 
G4PhysicsTable * GetCrossSectionTable ()
 
G4VEmFluctuationModel * GetModelOfFluctuations ()
 
G4VEmAngularDistribution * GetAngularDistribution ()
 
void SetAngularDistribution (G4VEmAngularDistribution *)
 
G4double HighEnergyLimit () const
 
G4double LowEnergyLimit () const
 
G4double HighEnergyActivationLimit () const
 
G4double LowEnergyActivationLimit () const
 
G4double PolarAngleLimit () const
 
G4double SecondaryThreshold () const
 
G4bool LPMFlag () const
 
G4bool DeexcitationFlag () const
 
G4bool ForceBuildTableFlag () const
 
G4bool UseAngularGeneratorFlag () const
 
void SetAngularGeneratorFlag (G4bool)
 
void SetHighEnergyLimit (G4double)
 
void SetLowEnergyLimit (G4double)
 
void SetActivationHighEnergyLimit (G4double)
 
void SetActivationLowEnergyLimit (G4double)
 
G4bool IsActive (G4double kinEnergy)
 
void SetPolarAngleLimit (G4double)
 
void SetSecondaryThreshold (G4double)
 
void SetLPMFlag (G4bool val)
 
void SetDeexcitationFlag (G4bool val)
 
void SetForceBuildTable (G4bool val)
 
void SetMasterThread (G4bool val)
 
G4bool IsMaster () const
 
G4double MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)
 
const G4String & GetName () const
 
void SetCurrentCouple (const G4MaterialCutsCouple *)
 
const G4Element * GetCurrentElement () const
 
const G4Isotope * GetCurrentIsotope () const
 
G4bool IsLocked () const
 
void SetLocked (G4bool)
 

Private Member Functions

 G4PolarizedMollerBhabhaModel (G4PolarizedMollerBhabhaModel &)
 
G4PolarizedMollerBhabhaModel & operator= (const G4PolarizedMollerBhabhaModel &right)
 

Private Attributes

G4StokesVector theBeamPolarization
 
G4StokesVector theTargetPolarization
 
G4VPolarizedCrossSection * crossSectionCalculator
 
G4StokesVector fPositronPolarization
 
G4StokesVector fElectronPolarization
 

Additional Inherited Members

- Protected Member Functions inherited from G4MollerBhabhaModel
virtual G4double MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kinEnergy)
 
void SetParticle (const G4ParticleDefinition *p)
 
- Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss * GetParticleChangeForLoss ()
 
G4ParticleChangeForGamma * GetParticleChangeForGamma ()
 
const G4MaterialCutsCouple * CurrentCouple () const
 
void SetCurrentElement (const G4Element *)
 
- Protected Attributes inherited from G4MollerBhabhaModel
const G4ParticleDefinition * particle
 
G4ParticleDefinition * theElectron
 
G4ParticleChangeForLoss * fParticleChange
 
G4bool isElectron
 
G4double twoln10
 
G4double lowLimit
 
- Protected Attributes inherited from G4VEmModel
G4ElementData * fElementData
 
G4VParticleChange * pParticleChange
 
G4PhysicsTable * xSectionTable
 
const std::vector< G4double > * theDensityFactor
 
const std::vector< G4int > * theDensityIdx
 
size_t idxTable
 
- Static Protected Attributes inherited from G4VEmModel
static const G4double inveplus = 1.0/CLHEP::eplus
 

Detailed Description

Definition at line 59 of file G4PolarizedMollerBhabhaModel.hh.

Constructor & Destructor Documentation

◆ G4PolarizedMollerBhabhaModel() [1/2]

G4PolarizedMollerBhabhaModel::G4PolarizedMollerBhabhaModel ( const G4ParticleDefinition *  p = 0,
const G4String &  nam = "PolarizedMollerBhabha" 
)

Definition at line 65 of file G4PolarizedMollerBhabhaModel.cc.

67  : G4MollerBhabhaModel(p,nam)
68 {
69 
70  // G4cout<<" particle==electron "<<(p==theElectron)<<G4endl;
71  isElectron=(p==theElectron); // necessary due to wrong order in G4MollerBhabhaModel constructor!
72 
73  if (p==0) {
74 
75  }
76  if (!isElectron) {
77  G4cout<<" buildBhabha cross section "<<isElectron<<G4endl;
78  crossSectionCalculator = new G4PolarizedBhabhaCrossSection();
79  } else {
80  G4cout<<" buildMoller cross section "<<isElectron<<G4endl;
81  crossSectionCalculator = new G4PolarizedMollerCrossSection();
82  }
83 }
G4cout
G4GLOB_DLL std::ostream G4cout
G4MollerBhabhaModel::G4MollerBhabhaModel
G4MollerBhabhaModel(const G4ParticleDefinition *p=nullptr, const G4String &nam="MollerBhabha")
Definition: G4MollerBhabhaModel.cc:76
G4PolarizedMollerBhabhaModel::crossSectionCalculator
G4VPolarizedCrossSection * crossSectionCalculator
Definition: G4PolarizedMollerBhabhaModel.hh:117
G4MollerBhabhaModel::theElectron
G4ParticleDefinition * theElectron
Definition: G4MollerBhabhaModel.hh:113
G4endl
#define G4endl
Definition: G4ios.hh:61
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◆ ~G4PolarizedMollerBhabhaModel()

G4PolarizedMollerBhabhaModel::~G4PolarizedMollerBhabhaModel ( )
virtual

Definition at line 87 of file G4PolarizedMollerBhabhaModel.cc.

88 {
89  if (crossSectionCalculator) {
90  delete crossSectionCalculator;
91  }
92 }
G4PolarizedMollerBhabhaModel::crossSectionCalculator
G4VPolarizedCrossSection * crossSectionCalculator
Definition: G4PolarizedMollerBhabhaModel.hh:117

◆ G4PolarizedMollerBhabhaModel() [2/2]

G4PolarizedMollerBhabhaModel::G4PolarizedMollerBhabhaModel ( G4PolarizedMollerBhabhaModel &  )
private

Member Function Documentation

◆ ComputeCrossSectionPerElectron()

G4double G4PolarizedMollerBhabhaModel::ComputeCrossSectionPerElectron ( const G4ParticleDefinition *  pd,
G4double  kinEnergy,
G4double  cut,
G4double  emax 
)
virtual

Reimplemented from G4MollerBhabhaModel.

Definition at line 97 of file G4PolarizedMollerBhabhaModel.cc.

102 {
103  G4double xs =
104  G4MollerBhabhaModel::ComputeCrossSectionPerElectron(pd,kinEnergy,
105  cut,emax);
106 // G4cout<<"calc eIoni xsec "<<xs<<G4endl;
107 // G4cout<<" "<<kinEnergy<<" "<<cut<<" "<<emax<<G4endl;
108  G4double factor=1.;
109  if (xs!=0) {
110  // G4cout<<"calc asym"<<G4endl;
111  G4double tmax = MaxSecondaryEnergy(pd, kinEnergy);
112  tmax = std::min(emax, tmax);
113 
114  if (std::fabs(cut/emax-1.)<1.e-10) return xs;
115 
116  if(cut < tmax) {
117 
118  G4double xmin = cut/kinEnergy;
119  G4double xmax = tmax/kinEnergy;
120 // G4cout<<"calc asym "<<xmin<<","<<xmax<<G4endl;
121  G4double gam = kinEnergy/electron_mass_c2 + 1.0;
122 
123  G4double crossPol=crossSectionCalculator->
124  TotalXSection(xmin,xmax,gam,
125  theBeamPolarization,
126  theTargetPolarization);
127  G4double crossUnpol=crossSectionCalculator->
128  TotalXSection(xmin,xmax,gam,
129  G4StokesVector::ZERO,
130  G4StokesVector::ZERO);
131  if (crossUnpol>0.) factor=crossPol/crossUnpol;
132  // G4cout<<" factor="<<factor<<G4endl;
133  }
134  }
135  return xs*factor;
136 }
G4PolarizedMollerBhabhaModel::crossSectionCalculator
G4VPolarizedCrossSection * crossSectionCalculator
Definition: G4PolarizedMollerBhabhaModel.hh:117
python.hepunit.electron_mass_c2
float electron_mass_c2
Definition: hepunit.py:274
emax
static const G4double emax
Definition: G4ChatterjeeCrossSection.hh:39
G4MollerBhabhaModel::MaxSecondaryEnergy
virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition *, G4double kinEnergy)
Definition: G4MollerBhabhaModel.cc:97
factor
static const G4double factor
Definition: G4ContinuumGammaTransition.cc:63
G4MollerBhabhaModel::ComputeCrossSectionPerElectron
virtual G4double ComputeCrossSectionPerElectron(const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
Definition: G4MollerBhabhaModel.cc:124
G4double
double G4double
Definition: G4Types.hh:76
G4StokesVector::ZERO
static const G4StokesVector ZERO
Definition: G4StokesVector.hh:62
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◆ GetBeamPolarization()

const G4StokesVector& G4PolarizedMollerBhabhaModel::GetBeamPolarization ( )
inline

Definition at line 96 of file G4PolarizedMollerBhabhaModel.hh.

97  {
98  return theBeamPolarization;
99  }

◆ GetFinalElectronPolarization()

const G4StokesVector& G4PolarizedMollerBhabhaModel::GetFinalElectronPolarization ( )
inline

Definition at line 100 of file G4PolarizedMollerBhabhaModel.hh.

101  {
102  return fElectronPolarization;
103  }

◆ GetFinalPositronPolarization()

const G4StokesVector& G4PolarizedMollerBhabhaModel::GetFinalPositronPolarization ( )
inline

Definition at line 104 of file G4PolarizedMollerBhabhaModel.hh.

105  {
106  return fPositronPolarization;
107  }
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◆ GetTargetPolarization()

const G4StokesVector& G4PolarizedMollerBhabhaModel::GetTargetPolarization ( )
inline

Definition at line 92 of file G4PolarizedMollerBhabhaModel.hh.

93  {
94  return theTargetPolarization;
95  }

◆ operator=()

G4PolarizedMollerBhabhaModel& G4PolarizedMollerBhabhaModel::operator= ( const G4PolarizedMollerBhabhaModel &  right)
private
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◆ SampleSecondaries()

void G4PolarizedMollerBhabhaModel::SampleSecondaries ( std::vector< G4DynamicParticle *> *  vdp,
const G4MaterialCutsCouple *  ,
const G4DynamicParticle *  dp,
G4double  tmin,
G4double  maxEnergy 
)
virtual

Reimplemented from G4MollerBhabhaModel.

Definition at line 140 of file G4PolarizedMollerBhabhaModel.cc.

145 {
146  // *** obtain and save target and beam polarization ***
147  G4PolarizationManager * polarizationManger = G4PolarizationManager::GetInstance();
148 
149  const G4Track * aTrack = fParticleChange->GetCurrentTrack();
150 
151  // obtain polarization of the beam
152  theBeamPolarization = dp->GetPolarization();
153 
154  // obtain polarization of the media
155  G4VPhysicalVolume* aPVolume = aTrack->GetVolume();
156  G4LogicalVolume* aLVolume = aPVolume->GetLogicalVolume();
157  const G4bool targetIsPolarized = polarizationManger->IsPolarized(aLVolume);
158  theTargetPolarization = polarizationManger->GetVolumePolarization(aLVolume);
159 
160  // transfer target polarization in interaction frame
161  if (targetIsPolarized)
162  theTargetPolarization.rotateUz(dp->GetMomentumDirection());
163 
164 
165 
166 
167  G4double tmax = std::min(maxEnergy, MaxSecondaryKinEnergy(dp));
168  if(tmin >= tmax) return;
169  // if(tmin > tmax) tmin = tmax;
170 
171  G4double polL = theBeamPolarization.z()*theTargetPolarization.z();
172  polL=std::fabs(polL);
173  G4double polT = theBeamPolarization.x()*theTargetPolarization.x() +
174  theBeamPolarization.y()*theTargetPolarization.y();
175  polT=std::fabs(polT);
176 
177  G4double kineticEnergy = dp->GetKineticEnergy();
178  G4double energy = kineticEnergy + electron_mass_c2;
179  G4double totalMomentum = std::sqrt(kineticEnergy*(energy + electron_mass_c2));
180  G4double xmin = tmin/kineticEnergy;
181  G4double xmax = tmax/kineticEnergy;
182  G4double gam = energy/electron_mass_c2;
183  G4double gamma2 = gam*gam;
184  G4double gmo = gam - 1.;
185  G4double gmo2 = gmo*gmo;
186  G4double gmo3 = gmo2*gmo;
187  G4double gpo = gam + 1.;
188  G4double gpo2 = gpo*gpo;
189  G4double gpo3 = gpo2*gpo;
190  G4double x, y, q, grej, grej2;
191  G4double z = 0.;
192  G4double xs = 0., phi =0.;
193  G4ThreeVector direction = dp->GetMomentumDirection();
194 
195  //(Polarized) Moller (e-e-) scattering
196  if (isElectron) {
197  // *** dice according to polarized cross section
198  G4double G = ((2.0*gam - 1.0)/gamma2)*(1. - polT - polL*gam);
199  G4double H = (sqr(gam - 1.0)/gamma2)*(1. + polT + polL*((gam + 3.)/(gam - 1.)));
200 
201  y = 1.0 - xmax;
202  grej = 1.0 - G*xmax + xmax*xmax*(H + (1.0 - G*y)/(y*y));
203  grej2 = 1.0 - G*xmin + xmin*xmin*(H + (1.0 - G*y)/(y*y));
204  if (grej2 > grej) grej = grej2;
205  G4double prefM = gamma2*classic_electr_radius*classic_electr_radius/(gmo2*(gam + 1.0));
206  grej *= prefM;
207  do {
208  q = G4UniformRand();
209  x = xmin*xmax/(xmin*(1.0 - q) + xmax*q);
210  if (crossSectionCalculator) {
211  crossSectionCalculator->Initialize(x,gam,phi,theBeamPolarization,
212  theTargetPolarization,1);
213  xs=crossSectionCalculator->XSection(G4StokesVector::ZERO,
214  G4StokesVector::ZERO);
215  z=xs*sqr(x)*4.;
216  if (grej < z) {
217  G4cout<<"WARNING : error in Moller rejection routine! \n"
218  <<" z = "<<z<<" grej="<<grej<<"\n";
219  }
220  } else {
221  G4cout<<"No calculator in Moller scattering"<<G4endl;
222  }
223  // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
224  } while(grej * G4UniformRand() > z);
225  //Bhabha (e+e-) scattering
226  } else {
227  // *** dice according to polarized cross section
228  y = xmax*xmax;
229  grej = 0.;
230  grej += y*y*gmo3*(1. + (polL + polT)*(gam + 3.)/gmo);
231  grej += -2.*xmin*xmin*xmin*gam*gmo2*(1. - (polL + polT)*(gam + 3.)/gmo);
232  grej += y*y*gmo*(3.*gamma2 + 6.*gam + 4.)*(1. + (polL*(3.*gam + 1.)*(gamma2 + gam + 1.) + polT*((gam + 2.)*gamma2 + 1.))/(gmo*(3.*gam*(gam + 2.) + 4.)));
233  grej /= gpo3;
234  grej += -xmin*(2.*gamma2 + 4.*gam + 1.)*(1. - gam*(polL*(2.*gam + 1.) + polT)/(2.*gam*(gam + 2.) + 1.))/gpo2;
235  grej += gamma2/(gamma2 - 1.);
236  G4double prefB = classic_electr_radius*classic_electr_radius/(gam - 1.0);
237  grej *= prefB;
238 
239  do {
240  q = G4UniformRand();
241  x = xmin*xmax/(xmin*(1.0 - q) + xmax*q);
242  if (crossSectionCalculator) {
243  crossSectionCalculator->Initialize(x,gam,phi,theBeamPolarization,
244  theTargetPolarization,1);
245  xs=crossSectionCalculator->XSection(G4StokesVector::ZERO,
246  G4StokesVector::ZERO);
247  z=xs*sqr(x)*4.;
248  } else {
249  G4cout<<"No calculator in Bhabha scattering"<<G4endl;
250  }
251 
252  if(z > grej) {
253  G4cout<<"&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"<<G4endl;
254  G4cout << "G4PolarizedMollerBhabhaModel::SampleSecondaries Warning! "<<G4endl
255  << "Majorant " << grej << " < "
256  << z << " for x= " << x<<G4endl
257  << " e+e- (Bhabha) scattering"<<" at KinEnergy "<<kineticEnergy<<G4endl;
258  G4cout<<"&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&"<<G4endl;
259  }
260  // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
261  } while(grej * G4UniformRand() > z);
262  }
263  //
264  //
265  // polar asymmetries (due to transverse polarizations)
266  //
267  //
268  if (crossSectionCalculator) {
269  // grej*=1./(sqr(x)*sqr(gamma2-1))*sqr(gam*(1+gam));
270  grej=xs*2.;
271  do {
272  phi = twopi * G4UniformRand() ;
273  crossSectionCalculator->Initialize(x,gam,phi,theBeamPolarization,
274  theTargetPolarization,1);
275  xs=crossSectionCalculator->XSection(G4StokesVector::ZERO,
276  G4StokesVector::ZERO);
277  if(xs > grej) {
278  if (isElectron){
279  G4cout << "G4PolarizedMollerBhabhaModel::SampleSecondaries Warning! "<<G4endl
280  << "Majorant " << grej << " < "
281  << xs << " for phi= " << phi<<G4endl
282  << " e-e- (Moller) scattering"<< G4endl
283  <<"PHI DICING"<<G4endl;
284  } else {
285  G4cout << "G4PolarizedMollerBhabhaModel::SampleSecondaries Warning! "<<G4endl
286  << "Majorant " << grej << " < "
287  << xs << " for phi= " << phi<<G4endl
288  << " e+e- (Bhabha) scattering"<< G4endl
289  <<"PHI DICING"<<G4endl;
290  }
291  }
292  // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
293  } while(grej * G4UniformRand() > xs);
294  }
295 
296  // fix kinematics of delta electron
297  G4double deltaKinEnergy = x * kineticEnergy;
298  G4double deltaMomentum =
299  std::sqrt(deltaKinEnergy * (deltaKinEnergy + 2.0*electron_mass_c2));
300  G4double cost = deltaKinEnergy * (energy + electron_mass_c2) /
301  (deltaMomentum * totalMomentum);
302  G4double sint = 1.0 - cost*cost;
303  if(sint > 0.0) sint = std::sqrt(sint);
304 
305 
306  G4ThreeVector deltaDirection(-sint*std::cos(phi),-sint*std::sin(phi), cost) ;
307  deltaDirection.rotateUz(direction);
308 
309  // primary change
310  kineticEnergy -= deltaKinEnergy;
311  fParticleChange->SetProposedKineticEnergy(kineticEnergy);
312 
313  if(kineticEnergy > DBL_MIN) {
314  G4ThreeVector dir = totalMomentum*direction - deltaMomentum*deltaDirection;
315  direction = dir.unit();
316  fParticleChange->SetProposedMomentumDirection(direction);
317  }
318 
319  // create G4DynamicParticle object for delta ray
320  G4DynamicParticle* delta = new G4DynamicParticle(theElectron,deltaDirection,deltaKinEnergy);
321  vdp->push_back(delta);
322 
323  // get interaction frame
324  G4ThreeVector nInteractionFrame =
325  G4PolarizationHelper::GetFrame(direction,deltaDirection);
326 
327  if (crossSectionCalculator) {
328  // calculate mean final state polarizations
329 
330  theBeamPolarization.InvRotateAz(nInteractionFrame,direction);
331  theTargetPolarization.InvRotateAz(nInteractionFrame,direction);
332  crossSectionCalculator->Initialize(x,gam,phi,theBeamPolarization,
333  theTargetPolarization,2);
334 
335  // electron/positron
336  fPositronPolarization=crossSectionCalculator->GetPol2();
337  fPositronPolarization.RotateAz(nInteractionFrame,direction);
338 
339  fParticleChange->ProposePolarization(fPositronPolarization);
340 
341  // electron
342  fElectronPolarization=crossSectionCalculator->GetPol3();
343  fElectronPolarization.RotateAz(nInteractionFrame,deltaDirection);
344  delta->SetPolarization(fElectronPolarization.x(),
345  fElectronPolarization.y(),
346  fElectronPolarization.z());
347  }
348  else {
349  fPositronPolarization=G4ThreeVector();
350  fElectronPolarization=G4ThreeVector();
351  }
352 }
G4VEmModel::MaxSecondaryKinEnergy
G4double MaxSecondaryKinEnergy(const G4DynamicParticle *dynParticle)
Definition: G4VEmModel.hh:482
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition: G4ThreeVector.hh:42
G4PolarizationManager::GetVolumePolarization
const G4ThreeVector & GetVolumePolarization(G4LogicalVolume *lVol) const
Definition: G4PolarizationManager.hh:98
G4PolarizationManager::GetInstance
static G4PolarizationManager * GetInstance()
Definition: G4PolarizationManager.cc:52
G4VPolarizedCrossSection::XSection
virtual G4double XSection(const G4StokesVector &pol2, const G4StokesVector &pol3)=0
dir
TDirectory * dir
Definition: human_phantom/macro.C:5
y
Double_t y
Definition: advanced/microbeam/plot.C:279
G4VPolarizedCrossSection::GetPol2
virtual G4StokesVector GetPol2()
Definition: G4VPolarizedCrossSection.cc:62
G4DynamicParticle::GetKineticEnergy
G4double GetKineticEnergy() const
G4PolarizationManager::IsPolarized
bool IsPolarized(G4LogicalVolume *lVol) const
Definition: G4PolarizationManager.hh:108
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:97
G4cout
G4GLOB_DLL std::ostream G4cout
energy
double energy
Definition: plottest35.C:25
G4MollerBhabhaModel::fParticleChange
G4ParticleChangeForLoss * fParticleChange
Definition: G4MollerBhabhaModel.hh:114
G4bool
bool G4bool
Definition: G4Types.hh:79
CLHEP::Hep3Vector::unit
Hep3Vector unit() const
CLHEP::Hep3Vector::rotateUz
Hep3Vector & rotateUz(const Hep3Vector &)
Definition: ThreeVector.cc:38
twopi
static const double twopi
Definition: G4SIunits.hh:75
G4PolarizationHelper::GetFrame
static G4ThreeVector GetFrame(const G4ThreeVector &, const G4ThreeVector &)
Definition: G4PolarizationHelper.cc:48
G4PolarizedMollerBhabhaModel::crossSectionCalculator
G4VPolarizedCrossSection * crossSectionCalculator
Definition: G4PolarizedMollerBhabhaModel.hh:117
python.hepunit.electron_mass_c2
float electron_mass_c2
Definition: hepunit.py:274
G4DynamicParticle::SetPolarization
void SetPolarization(G4double polX, G4double polY, G4double polZ)
CLHEP::Hep3Vector::x
double x() const
G4StokesVector::InvRotateAz
void InvRotateAz(G4ThreeVector nInteractionFrame, G4ThreeVector particleDirection)
Definition: G4StokesVector.cc:108
G4MollerBhabhaModel::theElectron
G4ParticleDefinition * theElectron
Definition: G4MollerBhabhaModel.hh:113
python.hepunit.classic_electr_radius
int classic_electr_radius
Definition: hepunit.py:288
CLHEP::Hep3Vector::y
double y() const
G4DynamicParticle::GetMomentumDirection
const G4ThreeVector & GetMomentumDirection() const
G4DynamicParticle::GetPolarization
const G4ThreeVector & GetPolarization() const
CLHEP::Hep3Vector::z
double z() const
DBL_MIN
#define DBL_MIN
Definition: templates.hh:75
G4VPolarizedCrossSection::GetPol3
virtual G4StokesVector GetPol3()
Definition: G4VPolarizedCrossSection.cc:73
G4endl
#define G4endl
Definition: G4ios.hh:61
sqr
T sqr(const T &x)
Definition: templates.hh:145
G4double
double G4double
Definition: G4Types.hh:76
G4VPhysicalVolume::GetLogicalVolume
G4LogicalVolume * GetLogicalVolume() const
G4StokesVector::ZERO
static const G4StokesVector ZERO
Definition: G4StokesVector.hh:62
G4StokesVector::RotateAz
void RotateAz(G4ThreeVector nInteractionFrame, G4ThreeVector particleDirection)
Definition: G4StokesVector.cc:71
G4VPolarizedCrossSection::Initialize
virtual void Initialize(G4double, G4double, G4double, const G4StokesVector &p0, const G4StokesVector &p1, G4int flag=0)
Definition: G4VPolarizedCrossSection.cc:55
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◆ SetBeamPolarization()

void G4PolarizedMollerBhabhaModel::SetBeamPolarization ( const G4ThreeVector &  pBeam)
inline

Definition at line 88 of file G4PolarizedMollerBhabhaModel.hh.

89  {
90  theBeamPolarization = pBeam;
91  }
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◆ SetTargetPolarization()

void G4PolarizedMollerBhabhaModel::SetTargetPolarization ( const G4ThreeVector &  pTarget)
inline

Definition at line 84 of file G4PolarizedMollerBhabhaModel.hh.

85  {
86  theTargetPolarization = pTarget;
87  }
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Member Data Documentation

◆ crossSectionCalculator

G4VPolarizedCrossSection* G4PolarizedMollerBhabhaModel::crossSectionCalculator
private

Definition at line 117 of file G4PolarizedMollerBhabhaModel.hh.

◆ fElectronPolarization

G4StokesVector G4PolarizedMollerBhabhaModel::fElectronPolarization
private

Definition at line 120 of file G4PolarizedMollerBhabhaModel.hh.

◆ fPositronPolarization

G4StokesVector G4PolarizedMollerBhabhaModel::fPositronPolarization
private

Definition at line 119 of file G4PolarizedMollerBhabhaModel.hh.

◆ theBeamPolarization

G4StokesVector G4PolarizedMollerBhabhaModel::theBeamPolarization
private

Definition at line 114 of file G4PolarizedMollerBhabhaModel.hh.

◆ theTargetPolarization

G4StokesVector G4PolarizedMollerBhabhaModel::theTargetPolarization
private

Definition at line 115 of file G4PolarizedMollerBhabhaModel.hh.

The documentation for this class was generated from the following files: