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CexmcPrimaryGeneratorAction.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file CexmcPrimaryGeneratorAction.cc
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/*
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* =============================================================================
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*
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* Filename: CexmcPrimaryGeneratorAction.cc
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*
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* Description: primary particle position, direction, energy etc.
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*
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* Version: 1.0
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* Created: 11.10.2009 14:43:03
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* Revision: none
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* Compiler: gcc
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*
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* Author: Alexey Radkov (),
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* Company: PNPI
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*
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* =============================================================================
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*/
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#include <
G4Event.hh
>
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#include <
G4ParticleTable.hh
>
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#include <
globals.hh
>
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#include <
Randomize.hh
>
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#include "
CexmcPrimaryGeneratorAction.hh
"
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#include "
CexmcPrimaryGeneratorActionMessenger.hh
"
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#include "
CexmcParticleGun.hh
"
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#include "
CexmcCommon.hh
"
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CexmcPrimaryGeneratorAction::CexmcPrimaryGeneratorAction
(
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CexmcPhysicsManager
* physicsManager ) :
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particleGun( NULL ), fwhmPosX( 0 ), fwhmPosY( 0 ), fwhmDirX( 0 ),
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fwhmDirY( 0 ), messenger( NULL )
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{
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particleGun
=
new
CexmcParticleGun
( physicsManager );
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messenger
=
new
CexmcPrimaryGeneratorActionMessenger
(
this
);
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}
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CexmcPrimaryGeneratorAction::~CexmcPrimaryGeneratorAction
()
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{
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delete
particleGun
;
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delete
messenger
;
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}
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void
CexmcPrimaryGeneratorAction::GeneratePrimaries
(
G4Event
* event )
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{
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particleGun
->
PrepareForNewEvent
();
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const
G4ThreeVector
& origPos(
particleGun
->
GetOrigPosition
() );
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const
G4ThreeVector
& origDir(
particleGun
->
GetOrigDirection
() );
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G4double
origMomentumAmp(
particleGun
->
GetOrigMomentumAmp
() );
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G4double
randPosX(
G4RandGauss::shoot
( origPos.x(),
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fwhmPosX
*
CexmcFwhmToStddev
) );
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G4double
randPosY(
G4RandGauss::shoot
( origPos.y(),
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fwhmPosY
*
CexmcFwhmToStddev
) );
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G4ThreeVector
newPos( randPosX, randPosY, origPos.z() );
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G4double
randAngleX(
G4RandGauss::shoot
( origDir.x(),
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fwhmDirX
*
CexmcFwhmToStddev
) );
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G4double
randAngleY(
G4RandGauss::shoot
( origDir.y(),
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fwhmDirY
*
CexmcFwhmToStddev
) );
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G4ThreeVector
newAngle( randAngleX, randAngleY, origDir.z() );
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G4double
newMomentumAmp(
G4RandGauss::shoot
( origMomentumAmp,
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fwhmMomentumAmp
* origMomentumAmp *
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CexmcFwhmToStddev
) );
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particleGun
->
SetParticlePosition
( newPos );
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particleGun
->
SetParticleMomentumDirection
( newAngle );
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particleGun
->
SetParticleMomentum
( newMomentumAmp );
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particleGun
->
GeneratePrimaryVertex
( event );
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}
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CexmcParticleGun
*
CexmcPrimaryGeneratorAction::GetParticleGun
(
void
)
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{
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return
particleGun
;
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}
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geant4
tree
geant4-10.6-release
examples
advanced
ChargeExchangeMC
src
CexmcPrimaryGeneratorAction.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:24:56
using
1.8.2 with
ECCE GitHub integration