ECCE @ EIC Software
Reference for
ECCE @ EIC
simulation and reconstruction software on GitHub
Home page
Related Pages
Modules
Namespaces
Classes
Files
External Links
File List
File Members
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Friends
Macros
Groups
Pages
G4mplIonisation.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4mplIonisation.cc
1
//
2
// ********************************************************************
3
// * License and Disclaimer *
4
// * *
5
// * The Geant4 software is copyright of the Copyright Holders of *
6
// * the Geant4 Collaboration. It is provided under the terms and *
7
// * conditions of the Geant4 Software License, included in the file *
8
// * LICENSE and available at http://cern.ch/geant4/license . These *
9
// * include a list of copyright holders. *
10
// * *
11
// * Neither the authors of this software system, nor their employing *
12
// * institutes,nor the agencies providing financial support for this *
13
// * work make any representation or warranty, express or implied, *
14
// * regarding this software system or assume any liability for its *
15
// * use. Please see the license in the file LICENSE and URL above *
16
// * for the full disclaimer and the limitation of liability. *
17
// * *
18
// * This code implementation is the result of the scientific and *
19
// * technical work of the GEANT4 collaboration. *
20
// * By using, copying, modifying or distributing the software (or *
21
// * any work based on the software) you agree to acknowledge its *
22
// * use in resulting scientific publications, and indicate your *
23
// * acceptance of all terms of the Geant4 Software license. *
24
// ********************************************************************
25
//
26
//
27
// -------------------------------------------------------------------
28
//
29
// GEANT4 Class file
30
//
31
//
32
// File name: G4mplIonisation
33
//
34
// Author: Vladimir Ivanchenko
35
//
36
// Creation date: 25.08.2005
37
//
38
// Modifications:
39
//
40
//
41
// -------------------------------------------------------------------
42
//
43
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
45
46
#include "
G4mplIonisation.hh
"
47
#include "
G4PhysicalConstants.hh
"
48
#include "
G4SystemOfUnits.hh
"
49
#include "
G4Electron.hh
"
50
#include "
G4mplIonisationModel.hh
"
51
#include "
G4mplIonisationWithDeltaModel.hh
"
52
#include "
G4EmParameters.hh
"
53
54
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
55
56
using namespace
std;
57
58
G4mplIonisation::G4mplIonisation
(
G4double
mCharge,
const
G4String
&
name
)
59
:
G4VEnergyLossProcess
(name),
60
magneticCharge(mCharge),
61
isInitialised(
false
)
62
{
63
// By default classical magnetic charge is used
64
if
(
magneticCharge
== 0.0) {
magneticCharge
=
eplus
*0.5/
fine_structure_const
; }
65
66
SetVerboseLevel
(0);
67
SetProcessSubType
(
fIonisation
);
68
SetStepFunction
(0.2, 1*
mm
);
69
SetSecondaryParticle
(
G4Electron::Electron
());
70
}
71
72
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
73
74
G4mplIonisation::~G4mplIonisation
()
75
{}
76
77
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78
79
G4bool
G4mplIonisation::IsApplicable
(
const
G4ParticleDefinition
&)
80
{
81
return
true
;
82
}
83
84
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
85
86
G4double
G4mplIonisation::MinPrimaryEnergy
(
const
G4ParticleDefinition
* mpl,
87
const
G4Material
*,
88
G4double
cut)
89
{
90
G4double
x
= 0.5*cut/
electron_mass_c2
;
91
G4double
mass
= mpl->
GetPDGMass
();
92
G4double
ratio
=
electron_mass_c2
/
mass
;
93
G4double
gam
= x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio));
94
return
mass*(gam - 1.0);
95
}
96
97
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
98
99
void
G4mplIonisation::InitialiseEnergyLossProcess
(
const
G4ParticleDefinition
*
p
,
100
const
G4ParticleDefinition
*)
101
{
102
if
(
isInitialised
) {
return
; }
103
104
SetBaseParticle
(0);
105
106
// monopole model is responsible both for energy loss and fluctuations
107
G4mplIonisationWithDeltaModel
*
ion
=
108
new
G4mplIonisationWithDeltaModel
(
magneticCharge
,
"PAI"
);
109
ion->
SetParticle
(p);
110
111
// define size of dedx and range tables
112
G4EmParameters
* param =
G4EmParameters::Instance
();
113
G4double
emin
=
std::min
(param->
MinKinEnergy
(),ion->
LowEnergyLimit
());
114
G4double
emax
=
std::max
(param->
MaxKinEnergy
(),ion->
HighEnergyLimit
());
115
G4int
bin
=
G4lrint
(param->
NumberOfBinsPerDecade
()*std::log10(emax/emin));
116
ion->
SetLowEnergyLimit
(emin);
117
ion->
SetHighEnergyLimit
(emax);
118
SetMinKinEnergy
(emin);
119
SetMaxKinEnergy
(emax);
120
SetDEDXBinning
(bin);
121
122
SetEmModel
(ion);
123
AddEmModel
(1,ion,ion);
124
125
isInitialised
=
true
;
126
}
127
128
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
129
130
void
G4mplIonisation::PrintInfo
()
131
{}
132
133
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
134
135
void
G4mplIonisation::ProcessDescription
(std::ostream& out)
const
136
{
137
out <<
"No description available."
<<
G4endl
;
138
G4VEnergyLossProcess::ProcessDescription
(out);
139
}
140
141
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
142
geant4
tree
geant4-10.6-release
source
processes
electromagnetic
highenergy
src
G4mplIonisation.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:31
using
1.8.2 with
ECCE GitHub integration