Geant4
9.6.p02
Main Page
Related Pages
Modules
Namespaces
Classes
Files
File List
File Members
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Friends
Macros
Groups
Pages
geant4_9_6_p02
examples
extended
electromagnetic
TestEm13
src
PrimaryGeneratorAction.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
// $Id$
30
//
31
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
34
#include "PrimaryGeneratorAction.hh"
35
36
#include "DetectorConstruction.hh"
37
38
#include "
G4Event.hh
"
39
#include "
G4ParticleTable.hh
"
40
#include "
G4ParticleDefinition.hh
"
41
#include "
G4SystemOfUnits.hh
"
42
#include "
Randomize.hh
"
43
44
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45
46
PrimaryGeneratorAction::PrimaryGeneratorAction
(
DetectorConstruction
* det)
47
:fDetector(det)
48
{
49
fParticleGun =
new
G4ParticleGun
(1);
50
G4ParticleDefinition
* particle
51
=
G4ParticleTable::GetParticleTable
()->
FindParticle
(
"gamma"
);
52
fParticleGun->
SetParticleDefinition
(particle);
53
fParticleGun->
SetParticleEnergy
(1*
MeV
);
54
fParticleGun->
SetParticleMomentumDirection
(
G4ThreeVector
(1.,0.,0.));
55
}
56
57
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58
59
PrimaryGeneratorAction::~PrimaryGeneratorAction
()
60
{
61
delete
fParticleGun;
62
}
63
64
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65
66
void
PrimaryGeneratorAction::GeneratePrimaries
(
G4Event
* anEvent)
67
{
68
//this function is called at the begining of event
69
//
70
G4double
halfSize = 0.5*(fDetector->
GetSize
());
71
G4double
x0 = - halfSize;
72
73
//randomize (y0,z0)
74
//
75
G4double
beam = 0.8*halfSize;
76
G4double
y0 = (2*
G4UniformRand
()-1.)*beam;
77
G4double
z0 = (2*
G4UniformRand
()-1.)*beam;
78
79
fParticleGun->
SetParticlePosition
(
G4ThreeVector
(x0,y0,z0));
80
fParticleGun->
GeneratePrimaryVertex
(anEvent);
81
}
82
83
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
84
Generated on Sat May 25 2013 14:31:58 for Geant4 by
1.8.4