ChargeExchangeMC/include/CexmcParticleGun.hh

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0025 //
0026 /*
0027  * =============================================================================
0028  *
0029  *       Filename:  CexmcParticleGun.hh
0030  *
0031  *    Description:  particle gun
0032  *
0033  *        Version:  1.0
0034  *        Created:  15.12.2009 00:41:16
0035  *       Revision:  none
0036  *       Compiler:  gcc
0037  *
0038  *         Author:  Alexey Radkov (),
0039  *        Company:  PNPI
0040  *
0041  * =============================================================================
0042  */
0043
0044 #ifndef CEXMC_PARTICLE_GUN_HH
0045 #define CEXMC_PARTICLE_GUN_HH
0046
0047 #include <G4ParticleGun.hh>
0048 #include <G4ThreeVector.hh>
0049 #include "CexmcPhysicsManager.hh"
0050 #include "CexmcException.hh"
0051
0052 class  CexmcParticleGunMessenger;
0053
0054
0055 class  CexmcParticleGun : public G4ParticleGun
0056 {
0057     public:
0058         explicit CexmcParticleGun( CexmcPhysicsManager *  physicsManager,
0059                                    G4int  nmbOfParticles = 1 );
0060
0061         ~CexmcParticleGun();
0062
0063     public:
0064         void  PrepareForNewEvent( void );
0065
0066     public:
0067         const G4ThreeVector &  GetOrigPosition( void ) const;
0068
0069         const G4ThreeVector &  GetOrigDirection( void ) const;
0070
0071         G4double               GetOrigMomentumAmp( void ) const;
0072
0073         void  SetOrigPosition( const G4ThreeVector &  position,
0074                                G4bool  fromMessenger = true );
0075
0076         void  SetOrigDirection( const G4ThreeVector &  direction,
0077                                 G4bool  fromMessenger = true );
0078
0079         void  SetOrigMomentumAmp( G4double  momentumAmp,
0080                                   G4bool  fromMessenger = true );
0081
0082         void  SetBeamParticle( G4ParticleDefinition *  particleDefinition,
0083                                G4bool  fromMessenger = true );
0084
0085     private:
0086         CexmcPhysicsManager *        physicsManager;
0087
0088         G4ThreeVector                origPos;
0089
0090         G4ThreeVector                origDir;
0091
0092         G4double                     origMomentumAmp;
0093
0094     private:
0095         CexmcParticleGunMessenger *  messenger;
0096 };
0097
0098
0099 inline void  CexmcParticleGun::PrepareForNewEvent( void )
0100 {
0101     /* this will prevent G4ParticleGun spam about kinetic energy redefinition */
0102     particle_energy = 0.0;
0103     particle_momentum = 0.0;
0104 }
0105
0106
0107 inline const G4ThreeVector &  CexmcParticleGun::GetOrigPosition( void ) const
0108 {
0109     return origPos;
0110 }
0111
0112
0113 inline const G4ThreeVector &  CexmcParticleGun::GetOrigDirection( void ) const
0114 {
0115     return origDir;
0116 }
0117
0118
0119 inline G4double  CexmcParticleGun::GetOrigMomentumAmp( void ) const
0120 {
0121     return origMomentumAmp;
0122 }
0123
0124
0125 inline void  CexmcParticleGun::SetOrigPosition(
0126                     const G4ThreeVector &  position, G4bool  fromMessenger )
0127 {
0128     if ( fromMessenger )
0129         ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
0130
0131     origPos = position;
0132 }
0133
0134
0135 inline void  CexmcParticleGun::SetOrigDirection(
0136                     const G4ThreeVector &  direction, G4bool  fromMessenger )
0137 {
0138     if ( fromMessenger )
0139         ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
0140
0141     origDir = direction;
0142
0143     physicsManager->SetMaxIL( direction );
0144 }
0145
0146
0147 inline void  CexmcParticleGun::SetOrigMomentumAmp( G4double  momentumAmp,
0148                                                    G4bool  fromMessenger )
0149 {
0150     if ( fromMessenger )
0151         ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
0152
0153     origMomentumAmp = momentumAmp;
0154 }
0155
0156
0157 inline void  CexmcParticleGun::SetBeamParticle(
0158             G4ParticleDefinition *  particleDefinition, G4bool  fromMessenger )
0159 {
0160     if ( fromMessenger )
0161         ThrowExceptionIfProjectIsRead( CexmcCmdIsNotAllowed );
0162
0163     SetParticleDefinition( particleDefinition );
0164 }
0165
0166
0167 #endif
0168