Geant4
10.02.p02
Main Page
Related Pages
Modules
Namespaces
Classes
Files
File List
File Members
PrimaryGenerator.cc
Go to the documentation of this file.
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
// $Id: PrimaryGenerator.cc 89705 2015-04-27 17:15:27Z maire $
31
//
32
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34
35
#include "
PrimaryGenerator.hh
"
36
37
#include "
G4Event.hh
"
38
#include "
G4ParticleTable.hh
"
39
#include "
G4ParticleDefinition.hh
"
40
#include "
G4PrimaryParticle.hh
"
41
#include "
G4PrimaryVertex.hh
"
42
#include "
G4PhysicalConstants.hh
"
43
#include "
G4SystemOfUnits.hh
"
44
#include "
Randomize.hh
"
45
46
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47
48
PrimaryGenerator::PrimaryGenerator
()
49
:
G4VPrimaryGenerator
()
50
{ }
51
52
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53
54
PrimaryGenerator::~PrimaryGenerator
()
55
{ }
56
57
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58
59
void
PrimaryGenerator::GeneratePrimaryVertex
(
G4Event
* event)
60
{
61
//vertex A uniform on a cylinder
62
//
63
const
G4double
r = 2*
mm
;
64
const
G4double
zmax = 8*
mm
;
65
//
66
G4double
alpha
=
twopi
*
G4UniformRand
();
//alpha uniform in (0, 2*pi)
67
G4double
ux = std::cos(alpha);
68
G4double
uy = std::sin(alpha);
69
G4double
z
= zmax*(2*
G4UniformRand
() - 1);
//z uniform in (-zmax, +zmax)
70
G4ThreeVector
positionA(r*ux,r*uy,z);
71
G4double
timeA = 0*
s
;
72
//
73
G4PrimaryVertex
* vertexA =
new
G4PrimaryVertex
(positionA, timeA);
74
75
//particle 1 at vertex A
76
//
77
G4ParticleDefinition
* particleDefinition
78
=
G4ParticleTable::GetParticleTable
()->
FindParticle
(
"geantino"
);
79
G4PrimaryParticle
* particle1 =
new
G4PrimaryParticle
(particleDefinition);
80
particle1->
SetMomentumDirection
(
G4ThreeVector
(ux,uy,0));
81
particle1->
SetKineticEnergy
(1*
MeV
);
82
//
83
vertexA->
SetPrimary
(particle1);
84
event
->AddPrimaryVertex(vertexA);
85
86
//vertex (B) symetric to vertex A
87
//
88
alpha +=
pi
;
89
ux = std::cos(alpha);
90
uy = std::sin(alpha);
91
G4ThreeVector
positionB(r*ux,r*uy,z);
92
G4double
timeB = 1*
s
;
93
//
94
G4PrimaryVertex
* vertexB =
new
G4PrimaryVertex
(positionB, timeB);
95
96
//particles 2 and 3 at vertex B
97
//
98
const
G4double
dalpha = 10*
deg
;
99
ux = std::cos(alpha + dalpha);
100
uy = std::sin(alpha + dalpha);
101
G4PrimaryParticle
* particle2 =
new
G4PrimaryParticle
(particleDefinition);
102
particle2->
SetMomentumDirection
(
G4ThreeVector
(ux,uy,0));
103
particle2->
SetKineticEnergy
(1*
keV
);
104
//
105
ux = std::cos(alpha - dalpha);
106
uy = std::sin(alpha - dalpha);
107
G4PrimaryParticle
* particle3 =
new
G4PrimaryParticle
(particleDefinition);
108
particle3->
SetMomentumDirection
(
G4ThreeVector
(ux,uy,0));
109
particle3->
SetKineticEnergy
(1*
GeV
);
110
//
111
vertexB->
SetPrimary
(particle2);
112
vertexB->
SetPrimary
(particle3);
113
event
->AddPrimaryVertex(vertexB);
114
}
115
116
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
MeV
static const double MeV
Definition:
G4SIunits.hh:211
G4ParticleTable::FindParticle
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
Definition:
G4ParticleTable.cc:566
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition:
G4ThreeVector.hh:42
z
G4double z
Definition:
TRTMaterials.hh:39
G4ParticleDefinition
Definition:
G4ParticleDefinition.hh:111
G4PrimaryParticle::SetKineticEnergy
void SetKineticEnergy(G4double eKin)
Definition:
G4PrimaryParticle.hh:251
s
static const double s
Definition:
G4SIunits.hh:168
G4PrimaryParticle.hh
PrimaryGenerator.hh
Definition of the PrimaryGenerator class.
G4PrimaryVertex
Definition:
G4PrimaryVertex.hh:50
G4UniformRand
#define G4UniformRand()
Definition:
Randomize.hh:97
G4ParticleTable.hh
deg
static const double deg
Definition:
G4SIunits.hh:151
twopi
static const double twopi
Definition:
G4SIunits.hh:75
GeV
static const double GeV
Definition:
G4SIunits.hh:214
G4ParticleDefinition.hh
G4PrimaryVertex.hh
Randomize.hh
G4PhysicalConstants.hh
PrimaryGenerator::PrimaryGenerator
PrimaryGenerator()
Definition:
PrimaryGenerator.cc:48
pi
static const double pi
Definition:
G4SIunits.hh:74
G4ParticleTable::GetParticleTable
static G4ParticleTable * GetParticleTable()
Definition:
G4ParticleTable.cc:96
G4PrimaryParticle::SetMomentumDirection
void SetMomentumDirection(const G4ThreeVector &p)
Definition:
G4PrimaryParticle.hh:224
G4PrimaryParticle
Definition:
G4PrimaryParticle.hh:68
G4PrimaryVertex::SetPrimary
void SetPrimary(G4PrimaryParticle *pp)
Definition:
G4PrimaryVertex.hh:144
keV
static const double keV
Definition:
G4SIunits.hh:213
PrimaryGenerator::GeneratePrimaryVertex
virtual void GeneratePrimaryVertex(G4Event *)
Definition:
PrimaryGenerator.cc:59
PrimaryGenerator::~PrimaryGenerator
~PrimaryGenerator()
Definition:
PrimaryGenerator.cc:54
G4double
double G4double
Definition:
G4Types.hh:76
G4SystemOfUnits.hh
alpha
static const G4double alpha
Definition:
G4LivermoreBremsstrahlungModel.cc:79
G4Event.hh
mm
static const double mm
Definition:
G4SIunits.hh:114
G4Event
Definition:
G4Event.hh:52
G4VPrimaryGenerator
Definition:
G4VPrimaryGenerator.hh:45
geant4.10.02.p02
examples
extended
eventgenerator
userPrimaryGenerator
src
PrimaryGenerator.cc
Generated on Fri Jul 1 2016 14:10:48 for Geant4 by
1.8.8