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G4MuPairProduction.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4MuPairProduction.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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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class file
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//
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//
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// File name: G4MuPairProduction
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//
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// Author: Laszlo Urban
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//
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// Creation date: 30.05.1998
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//
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// Modifications:
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//
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// 04-06-98 in DoIt,secondary production condition:
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// range>std::min(threshold,safety)
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// 26-10-98 new stuff from R. Kokoulin + cleanup , L.Urban
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// 06-05-99 bug fixed , L.Urban
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// 10-02-00 modifications+bug fix , new e.m. structure, L.Urban
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// 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
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// 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 17-09-01 migration of Materials to pure STL (mma)
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// 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove:
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// if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy
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// 26-09-01 completion of store/retrieve PhysicsTable
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// 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
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// 29-10-01 all static functions no more inlined (mma)
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// 07-11-01 particleMass becomes a local variable (mma)
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// 19-08-02 V.Ivanchenko update to new design
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// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
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// 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
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// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
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// 08-08-03 STD substitute standard (V.Ivanchenko)
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// 27-09-03 e+ set to be a secondary particle (V.Ivanchenko)
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// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
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// 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
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// 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko)
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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//
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// -------------------------------------------------------------------
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "
G4MuPairProduction.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
G4Positron.hh
"
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#include "
G4VEmModel.hh
"
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#include "
G4MuPairProductionModel.hh
"
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#include "
G4ElementData.hh
"
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#include "
G4EmParameters.hh
"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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using namespace
std;
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G4MuPairProduction::G4MuPairProduction
(
const
G4String
&
name
)
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:
G4VEnergyLossProcess
(name),
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theParticle(nullptr),
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lowestKinEnergy(1.*
GeV
),
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isInitialised(
false
)
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{
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SetProcessSubType
(
fPairProdByCharged
);
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SetSecondaryParticle
(
G4Positron::Positron
());
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SetIonisation
(
false
);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool
G4MuPairProduction::IsApplicable
(
const
G4ParticleDefinition
&
p
)
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{
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return
(p.
GetPDGCharge
() != 0.0 && p.
GetPDGMass
() > 10.0*
MeV
);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
G4MuPairProduction::MinPrimaryEnergy
(
const
G4ParticleDefinition
*,
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const
G4Material
*,
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G4double
)
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{
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return
lowestKinEnergy
;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
G4MuPairProduction::InitialiseEnergyLossProcess
(
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const
G4ParticleDefinition
*
part
,
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const
G4ParticleDefinition
*)
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{
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if
(!
isInitialised
) {
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isInitialised
=
true
;
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theParticle
=
part
;
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G4MuPairProductionModel
* mod =
new
G4MuPairProductionModel
(part);
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SetEmModel
(mod);
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lowestKinEnergy
=
std::max
(
lowestKinEnergy
, part->
GetPDGMass
()*8.0);
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mod->
SetLowestKineticEnergy
(
lowestKinEnergy
);
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G4VEmFluctuationModel
*
fm
=
nullptr
;
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G4EmParameters
* param =
G4EmParameters::Instance
();
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mod->
SetLowEnergyLimit
(param->
MinKinEnergy
());
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mod->
SetHighEnergyLimit
(param->
MaxKinEnergy
());
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AddEmModel
(1, mod, fm);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
G4MuPairProduction::StreamProcessInfo
(std::ostream& out)
const
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{
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G4ElementData
* ed =
EmModel
()->
GetElementData
();
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if
(ed) {
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for
(
G4int
Z
=1;
Z
<93; ++
Z
) {
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G4Physics2DVector
* pv = ed->
GetElement2DData
(
Z
);
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if
(pv) {
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out <<
" Sampling table "
<< pv->
GetLengthY
()
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<<
"x"
<< pv->
GetLengthX
() <<
"; from "
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<< exp(pv->
GetY
(0))/
GeV
<<
" GeV to "
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<< exp(pv->
GetY
(pv->
GetLengthY
()-1))/
TeV
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<<
" TeV "
<<
G4endl
;
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break
;
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}
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
G4MuPairProduction::ProcessDescription
(std::ostream& out)
const
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{
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out <<
" Pair production"
;
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G4VEnergyLossProcess::ProcessDescription
(out);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
geant4
tree
geant4-10.6-release
source
processes
electromagnetic
muons
src
G4MuPairProduction.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:33
using
1.8.2 with
ECCE GitHub integration