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
F03PrimaryGeneratorAction.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file F03PrimaryGeneratorAction.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
//
28
//
29
//
30
//
31
//
32
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34
35
#include "
F03PrimaryGeneratorAction.hh
"
36
37
#include "
F03DetectorConstruction.hh
"
38
#include "
F03PrimaryGeneratorMessenger.hh
"
39
40
#include "
G4Event.hh
"
41
#include "
G4ParticleGun.hh
"
42
#include "
G4ParticleTable.hh
"
43
#include "
G4ParticleDefinition.hh
"
44
45
#include "
Randomize.hh
"
46
#include "
G4SystemOfUnits.hh
"
47
#include "
G4PhysicalConstants.hh
"
48
49
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50
51
G4ParticleDefinition
*
F03PrimaryGeneratorAction::fgPrimaryParticle
= 0;
52
53
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54
55
F03PrimaryGeneratorAction::F03PrimaryGeneratorAction
(
56
F03DetectorConstruction
* det)
57
:
G4VUserPrimaryGeneratorAction
(),
58
fParticleGun(0),
59
fDetector(det),
60
fGunMessenger(0),
61
fRndmFlag(
"off"
),
62
fXVertex(0.),
63
fYVertex(0.),
64
fZVertex(0.),
65
fVertexDefined(
false
)
66
{
67
G4int
n_particle = 1;
68
fParticleGun
=
new
G4ParticleGun
(n_particle);
69
70
// create a messenger for this class
71
fGunMessenger
=
new
F03PrimaryGeneratorMessenger
(
this
);
72
73
// default particle kinematic
74
75
G4ParticleTable
* particleTable =
G4ParticleTable::GetParticleTable
();
76
G4String
particleName;
77
G4ParticleDefinition
*
particle
78
= particleTable->
FindParticle
(particleName=
"e-"
);
79
fParticleGun
->
SetParticleDefinition
(particle);
80
81
fgPrimaryParticle
=
particle
;
82
83
fParticleGun
->
SetParticleMomentumDirection
(
G4ThreeVector
(0.,0.,-1.));
84
fParticleGun
->
SetParticleEnergy
(1.*
GeV
);
85
86
fZVertex
=
fDetector
->
GetAbsorberZpos
()-0.5*(
fDetector
->
GetAbsorberThickness
());
87
fParticleGun
->
SetParticlePosition
(
G4ThreeVector
(
fXVertex
,
fYVertex
,
fZVertex
));
88
89
}
90
91
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
92
93
F03PrimaryGeneratorAction::~F03PrimaryGeneratorAction
()
94
{
95
delete
fParticleGun
;
96
delete
fGunMessenger
;
97
}
98
99
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
100
101
void
F03PrimaryGeneratorAction::GeneratePrimaries
(
G4Event
* anEvent)
102
{
103
// this function is called at the begining of event
104
//
105
fgPrimaryParticle
=
fParticleGun
->
GetParticleDefinition
();
106
107
G4double
x0,y0,
z0
;
108
if
(
fVertexDefined
)
109
{
110
x0 =
fXVertex
;
111
y0 =
fYVertex
;
112
z0 =
fZVertex
;
113
}
114
else
115
{
116
x0 = 0.;
117
y0 = 0.;
118
z0 =
fDetector
->
GetAbsorberZpos
()-0.5*(
fDetector
->
GetAbsorberThickness
());
119
}
120
121
G4double
r0,phi0;
122
if
(
fRndmFlag
==
"on"
)
123
{
124
r0 = (
fDetector
->
GetAbsorberRadius
())*std::sqrt(
G4UniformRand
());
125
phi0 =
twopi
*
G4UniformRand
();
126
x0 = r0*std::cos(phi0);
127
y0 = r0*std::sin(phi0);
128
}
129
130
fParticleGun
->
SetParticlePosition
(
G4ThreeVector
(x0,y0,z0));
131
fParticleGun
->
GeneratePrimaryVertex
(anEvent);
132
}
133
134
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
135
136
G4String
F03PrimaryGeneratorAction::GetPrimaryName
()
137
{
138
return
fgPrimaryParticle
->
GetParticleName
();
139
}
140
141
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
142
143
void
F03PrimaryGeneratorAction::SetXVertex
(
G4double
x
)
144
{
145
fVertexDefined
=
true
;
146
fXVertex
=
x
;
147
G4cout
<<
" X coordinate of the primary vertex = "
<<
fXVertex
/
mm
<<
148
" mm."
<<
G4endl
;
149
}
150
151
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
152
153
void
F03PrimaryGeneratorAction::SetYVertex
(
G4double
y
)
154
{
155
fVertexDefined
=
true
;
156
fYVertex
=
y
;
157
G4cout
<<
" Y coordinate of the primary vertex = "
<<
fYVertex
/
mm
<<
158
" mm."
<<
G4endl
;
159
}
160
161
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
162
163
void
F03PrimaryGeneratorAction::SetZVertex
(
G4double
z
)
164
{
165
fVertexDefined
=
true
;
166
fZVertex
=
z
;
167
G4cout
<<
" Z coordinate of the primary vertex = "
<<
fZVertex
/
mm
<<
168
" mm."
<<
G4endl
;
169
}
170
171
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
geant4
tree
geant4-10.6-release
examples
extended
field
field03
src
F03PrimaryGeneratorAction.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:05
using
1.8.2 with
ECCE GitHub integration