VMC::Gflash::PrimaryGenerator Class Reference

The primary generator. More...

#include <PrimaryGenerator.h>

Inheritance diagram for VMC::Gflash::PrimaryGenerator:

Public Member Functions
	PrimaryGenerator (TVirtualMCStack *stack)
	PrimaryGenerator (const PrimaryGenerator &origin, TVirtualMCStack *stack)
	PrimaryGenerator ()
virtual	~PrimaryGenerator ()
virtual void	GeneratePrimaries (const TVector3 &worldSize)
void	SetNofPrimaries (Int_t nofPrimaries)
void	SetVertexPosition (TVector3 position)
void	SetVertexDirection (TVector3 direction)
TVector3	GetVertexPosition () const
	Return the Vertex position.
TVector3	GetVertexDirection () const
	Return the Vertex direction.

Private Member Functions
void	GenerateOnePrimary (const TVector3 &origin)

Private Attributes
TVirtualMCStack *	fStack
	VMC stack.
Int_t	fNofPrimaries
	Number of primary particles.
TVector3	fVertexPosition
	Vertex position.
TVector3	fVertexDirection
	Vertex direction.

Detailed Description

The primary generator.

Geant4 gflash example adapted to Virtual Monte Carlo.

Date

28/10/2015

Author

I. Hrivnacova; IPN, Orsay

Definition at line 40 of file PrimaryGenerator.h.

Constructor & Destructor Documentation

PrimaryGenerator() [1/3]

VMC::Gflash::PrimaryGenerator::PrimaryGenerator

(

TVirtualMCStack *

stack

)

Standard constructor

Parameters

stack

The VMC stack

Definition at line 39 of file PrimaryGenerator.cxx.

    : TObject(),
      fStack(stack),
      fNofPrimaries(1),
      fVertexPosition(),
      fVertexDirection(TVector3(0, 0, 1))
  {
    /// Standard constructor
    /// \param stack  The VMC stack
  }

PrimaryGenerator() [2/3]

VMC::Gflash::PrimaryGenerator::PrimaryGenerator	(	const PrimaryGenerator &	origin,
		TVirtualMCStack *	stack )

Copy constructor (for clonig on worker thread in MT mode).

Parameters

origin	The source object (on master).
stack	The VMC stack

Definition at line 51 of file PrimaryGenerator.cxx.

    : TObject(origin),
      fStack(stack),
      fNofPrimaries(origin.fNofPrimaries),
      fVertexPosition(origin.fVertexPosition),
      fVertexDirection(origin.fVertexDirection)
  {
    /// Copy constructor (for clonig on worker thread in MT mode).
    /// \param origin    The source object (on master).
    /// \param stack  The VMC stack
  }

PrimaryGenerator() [3/3]

VMC::Gflash::PrimaryGenerator::PrimaryGenerator

(

)

Default constructor

Definition at line 65 of file PrimaryGenerator.cxx.

    : TObject(),
      fStack(0),
      fNofPrimaries(0),
      fVertexPosition(),
      fVertexDirection()
  {
    /// Default constructor
  }

~PrimaryGenerator()

VMC::Gflash::PrimaryGenerator::~PrimaryGenerator ( )

virtual

Destructor

Definition at line 76 of file PrimaryGenerator.cxx.

  {
    /// Destructor
  }

Member Function Documentation

GeneratePrimaries()

void VMC::Gflash::PrimaryGenerator::GeneratePrimaries ( const TVector3 & worldSize )

virtual

Fill the user stack (derived from TVirtualMCStack) with primary particles.

Definition at line 141 of file PrimaryGenerator.cxx.

  {
    /// Fill the user stack (derived from TVirtualMCStack) with primary
    /// particles.
 
    for (Int_t i = 0; i < fNofPrimaries; i++) GenerateOnePrimary(origin);
  }

SetNofPrimaries()

void VMC::Gflash::PrimaryGenerator::SetNofPrimaries ( Int_t nofPrimaries )

inline

Set the number of particles to be generated

Parameters

nofPrimaries

The number of particles to be generated

Definition at line 77 of file PrimaryGenerator.h.

{
  fNofPrimaries = nofPrimaries;
}

SetVertexPosition()

void VMC::Gflash::PrimaryGenerator::SetVertexPosition ( TVector3 position )

inline

Set the Vertex position

Parameters

position

The Vertex position

Definition at line 84 of file PrimaryGenerator.h.

{
  fVertexPosition = position;
}

SetVertexDirection()

void VMC::Gflash::PrimaryGenerator::SetVertexDirection ( TVector3 direction )

inline

Set the Vertex direction

Parameters

direction

The Vertex direction

Definition at line 91 of file PrimaryGenerator.h.

{
  fVertexDirection = direction;
}

GetVertexPosition()

TVector3 VMC::Gflash::PrimaryGenerator::GetVertexPosition ( ) const

inline

Return the Vertex position.

Definition at line 97 of file PrimaryGenerator.h.

{
  return fVertexPosition;
}

GetVertexDirection()

TVector3 VMC::Gflash::PrimaryGenerator::GetVertexDirection ( ) const

inline

Return the Vertex direction.

Definition at line 103 of file PrimaryGenerator.h.

{
  return fVertexDirection;
}

GenerateOnePrimary()

void VMC::Gflash::PrimaryGenerator::GenerateOnePrimary ( const TVector3 & origin )

private

Add one primary particle (kElectron) to the user stack (derived from TVirtualMCStack).

Parameters

origin

The track position

Definition at line 86 of file PrimaryGenerator.cxx.

  {
    /// Add one primary particle (kElectron) to the user stack
    /// (derived from TVirtualMCStack).
    /// \param origin  The track position
 
    // Track ID (filled by stack)
    Int_t ntr;
 
    // Option: to be tracked
    Int_t toBeDone = 1;
 
    // PDG
    Int_t pdg = kElectron;
 
    // Polarization
    Double_t polx = 0.;
    Double_t poly = 0.;
    Double_t polz = 0.;
 
    // Position
    Double_t vx = origin.X();
    Double_t vy = origin.Y();
    Double_t vz = origin.Z();
    Double_t tof = 0.;
    fVertexPosition = origin;
 
    // Energy (in GeV)
    Double_t kinEnergy = 50.;
    Double_t mass = 0.51099906 * 1e-03;
    Double_t e = mass + kinEnergy;
    Double_t pmag = sqrt(e * e - mass * mass);
 
    // Particle momentum
    Double_t px, py, pz;
    px = pmag * fVertexDirection.X();
    py = pmag * fVertexDirection.Y();
    pz = pmag * fVertexDirection.Z();
 
    // Randomize position
    // if (fIsRandom) {
    //   vy = origin.Y()*(gRandom->Rndm() - 0.5);
    //   vz = origin.Z()*(gRandom->Rndm() - 0.5);
    // }
 
    // Add particle to stack
    fStack->PushTrack(toBeDone, -1, pdg, px, py, pz, e, vx, vy, vz, tof, polx,
      poly, polz, kPPrimary, ntr, 1., 0);
  }

Member Data Documentation

fStack

TVirtualMCStack* VMC::Gflash::PrimaryGenerator::fStack

private

VMC stack.

Definition at line 65 of file PrimaryGenerator.h.

fNofPrimaries

Int_t VMC::Gflash::PrimaryGenerator::fNofPrimaries

private

Number of primary particles.

Definition at line 66 of file PrimaryGenerator.h.

fVertexPosition

TVector3 VMC::Gflash::PrimaryGenerator::fVertexPosition

private

Vertex position.

Definition at line 67 of file PrimaryGenerator.h.

fVertexDirection

TVector3 VMC::Gflash::PrimaryGenerator::fVertexDirection

private

Vertex direction.

Definition at line 68 of file PrimaryGenerator.h.

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The documentation for this class was generated from the following files:

• examples/Gflash/include/PrimaryGenerator.h
• examples/Gflash/src/PrimaryGenerator.cxx