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25 //
26 /*
27 * =============================================================================
28 *
29 * Filename: CexmcParticleGun.hh
30 *
31 * Description: particle gun
32 *
33 * Version: 1.0
34 * Created: 15.12.2009 00:41:16
35 * Revision: none
36 * Compiler: gcc
37 *
38 * Author: Alexey Radkov (),
39 * Company: PNPI
40 *
41 * =============================================================================
42 */
43
44 #ifndef CEXMC_PARTICLE_GUN_HH
45 #define CEXMC_PARTICLE_GUN_HH
46
47 #include <G4ParticleGun.hh>
48 #include <G4ThreeVector.hh>
49 #include "CexmcPhysicsManager.hh"
50 #include "CexmcException.hh"
51
52 class CexmcParticleGunMessenger;
53
54
55 class CexmcParticleGun : public G4ParticleGun
56 {
57 public:
58 explicit CexmcParticleGun( CexmcPhysicsManager * physicsManager,
59 G4int nmbOfParticles = 1 );
60
61 ~CexmcParticleGun();
62
63 public:
64 void PrepareForNewEvent( void );
65
66 public:
67 const G4ThreeVector & GetOrigPosition( void ) const;
68
69 const G4ThreeVector & GetOrigDirection( void ) const;
70
71 G4double GetOrigMomentumAmp( void ) const;
72
73 void SetOrigPosition( const G4ThreeVector & position,
74 G4bool fromMessenger = true );
75
76 void SetOrigDirection( const G4ThreeVector & direction,
77 G4bool fromMessenger = true );
78
79 void SetOrigMomentumAmp( G4double momentumAmp,
80 G4bool fromMessenger = true );
81
82 void SetBeamParticle( G4ParticleDefinition * particleDefinition,
83 G4bool fromMessenger = true );
84
85 private:
86 CexmcPhysicsManager * physicsManager;
87
88 G4ThreeVector origPos;
89
90 G4ThreeVector origDir;
91
92 G4double origMomentumAmp;
93
94 private:
95 CexmcParticleGunMessenger * messenger;
96 };
97
98
99 inline void CexmcParticleGun::PrepareForNewEvent( void )
100 {
101 /* this will prevent G4ParticleGun spam about kinetic energy redefinition */
102 particle_energy = 0.0;
103 particle_momentum = 0.0;
104 }
105
106
107 inline const G4ThreeVector & CexmcParticleGun::GetOrigPosition( void ) const
108 {
109 return origPos;
110 }
111
112
113 inline const G4ThreeVector & CexmcParticleGun::GetOrigDirection( void ) const
114 {
115 return origDir;
116 }
117
118
119 inline G4double CexmcParticleGun::GetOrigMomentumAmp( void ) const
120 {
121 return origMomentumAmp;
122 }
123
124
125 inline void CexmcParticleGun::SetOrigPosition(
126 const G4ThreeVector & position, G4bool fromMessenger )
127 {
128 if ( fromMessenger )
129 ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
130
131 origPos = position;
132 }
133
134
135 inline void CexmcParticleGun::SetOrigDirection(
136 const G4ThreeVector & direction, G4bool fromMessenger )
137 {
138 if ( fromMessenger )
139 ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
140
141 origDir = direction;
142
143 physicsManager->SetMaxIL( direction );
144 }
145
146
147 inline void CexmcParticleGun::SetOrigMomentumAmp( G4double momentumAmp,
148 G4bool fromMessenger )
149 {
150 if ( fromMessenger )
151 ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
152
153 origMomentumAmp = momentumAmp;
154 }
155
156
157 inline void CexmcParticleGun::SetBeamParticle(
158 G4ParticleDefinition * particleDefinition, G4bool fromMessenger )
159 {
160 if ( fromMessenger )
161 ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
162
163 SetParticleDefinition( particleDefinition );
164 }
165
166
167 #endif
168
169