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G4LEPTSIonisationModel.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4LEPTSIonisationModel.cc
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//
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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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#include "
G4LEPTSIonisationModel.hh
"
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#include "
CLHEP/Units/PhysicalConstants.h
"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4LEPTSIonisationModel::G4LEPTSIonisationModel
(
const
G4String
& modelName)
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:
G4VLEPTSModel
( modelName )
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{
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SetDeexcitationFlag
(
true
);
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fParticleChangeForGamma
= 0;
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theXSType
=
XSIonisation
;
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}
// constructor
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4LEPTSIonisationModel::~G4LEPTSIonisationModel
()
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{
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
G4LEPTSIonisationModel::Initialise
(
const
G4ParticleDefinition
* aParticle,
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const
G4DataVector
&)
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{
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Init
();
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BuildPhysicsTable
( *aParticle );
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fParticleChangeForGamma
=
GetParticleChangeForGamma
();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
G4LEPTSIonisationModel::CrossSectionPerVolume
(
const
G4Material
* mate,
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const
G4ParticleDefinition
* aParticle,
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G4double
kineticEnergy,
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G4double
,
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G4double
)
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{
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return
1./
GetMeanFreePath
( mate, aParticle, kineticEnergy );
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}
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void
G4LEPTSIonisationModel::SampleSecondaries
(std::vector<G4DynamicParticle*>* fvect,
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const
G4MaterialCutsCouple
* mateCuts,
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const
G4DynamicParticle
* aDynamicParticle,
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G4double
,
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G4double
)
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{
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G4double
P0KinEn = aDynamicParticle->
GetKineticEnergy
();
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G4double
Edep=0;
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G4double
Energylost=0;
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G4ThreeVector
P0Dir = aDynamicParticle->
GetMomentumDirection
();
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const
G4Material
* aMaterial = mateCuts->
GetMaterial
();
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if
(P0KinEn <
theIonisPot
[aMaterial]) {
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theIonisPot
[aMaterial] = P0KinEn;
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}
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Energylost =
SampleEnergyLoss
(aMaterial,
theIonisPot
[aMaterial], P0KinEn);
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G4ThreeVector
P1Dir =
SampleNewDirection
(aMaterial, P0Dir, P0KinEn/
CLHEP::eV
, Energylost/
CLHEP::eV
);
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G4double
P1KinEn =
std::max
(0., P0KinEn - Energylost);
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fParticleChangeForGamma
->
ProposeMomentumDirection
( P1Dir);
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fParticleChangeForGamma
->
SetProposedKineticEnergy
( P1KinEn);
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#ifdef DEBUG_LEPTS
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G4cout
<<
" G4LEPTSIonisationModel::SampleSecondaries( SetProposedKineticEnergy "
<< P1KinEn <<
" "
<< P0KinEn <<
" - "
<< Energylost <<
G4endl
;
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#endif
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G4double
P2KinEn;
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if
( Energylost <
theIonisPotInt
[aMaterial]) {
// External Ionisation
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//- SetModelName("Ionisation");
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Edep =
theIonisPot
[aMaterial];
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P2KinEn =
std::max
(0.001*
CLHEP::eV
, (Energylost -
theIonisPot
[aMaterial]) );
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}
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else
{
// Auger
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//- SetModelName("IonisAuger");
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Edep = 35*
CLHEP::eV
;
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P2KinEn =
std::max
(0.0, (Energylost -
theIonisPotInt
[aMaterial]) );
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G4double
P3KinEn =
std::max
(0.0,
theIonisPotInt
[aMaterial] - Edep);
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G4ThreeVector
P3Dir;
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P3Dir.
setX
(
G4UniformRand
() );
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P3Dir.
setY
(
G4UniformRand
() );
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P3Dir.
setZ
(
G4UniformRand
() );
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P3Dir /= P3Dir.
mag
();
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G4DynamicParticle
*
e3
=
new
G4DynamicParticle
(
G4Electron::Electron
(), P3Dir, P3KinEn);
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fvect->push_back(e3);
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}
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fParticleChangeForGamma
->
ProposeLocalEnergyDeposit
(Edep);
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if
( P2KinEn >
theLowestEnergyLimit
) {
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G4double
cp0 = std::sqrt(P0KinEn*(P0KinEn + 2.*
CLHEP::electron_mass_c2
));
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G4double
cp1 = std::sqrt(P1KinEn*(P1KinEn + 2.*
CLHEP::electron_mass_c2
));
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G4ThreeVector
P2Momentum = cp0*P0Dir -cp1*P1Dir;
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G4ThreeVector
P2Dir = P2Momentum / P2Momentum.
mag
();
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P2Dir.
rotateUz
(P0Dir);
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G4DynamicParticle
*
e2
=
new
G4DynamicParticle
(
G4Electron::Electron
(), P2Dir, P2KinEn);
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fvect->push_back(e2);
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}
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}
geant4
tree
geant4-10.6-release
source
processes
electromagnetic
dna
models
src
G4LEPTSIonisationModel.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:30
using
1.8.2 with
ECCE GitHub integration