Processor to create primary ionisation from MCParticles passing the TPC. More...

#include <PrimaryIonisationProcessor.h>

Inheritance diagram for marlintpc::PrimaryIonisationProcessor:

Public Member Functions
virtual Processor *	newProcessor ()

virtual void	init ()
	Called at the begin of the job before anything is read.

virtual void	processRunHeader (lcio::LCRunHeader *run)
	Called for every run.

virtual void	processEvent (lcio::LCEvent *evt)
	Called for every event - the working horse.

virtual void	SetParticleParameters (lcio::MCParticle *mcparticle)

virtual void	InitializeTrackPoint ()

virtual void	CalculateNumberOfElectrons ()

virtual void	CalculateNumberOfClusters ()

virtual void	ReadEPerClusterInfoFile ()

virtual void	ReadClusterDensityFile ()

virtual void	CalculateTrackPointwithBfield ()

virtual void	CalculateTrackPointwithoutBfield ()

int	GetTotalNumberOfElectrons ()

virtual void	CalculateClusterDistance ()

virtual void	CalculateEnergyLoss ()

virtual void	RotateToTrack (double x, double y, double z)

virtual void	RotateToDelta (double x, double y, double z)

virtual void	MultipleScattering (double phi, double theta)

virtual void	SetNextStartPoint ()

Protected Attributes
std::string	_inputCollectionName
	Name of input collection.

std::string	_outputCollectionName
	Name of output collection.

std::string	clusterdensityfile
	File with parametrisation of cluster density.

std::string	eperclusterfile
	File with parametrisation of electrons per cluster.

int	_nRun

int	_nEvt

float	_TPCRadius
	Outer radius of the TPC.

float	_TPCInnerRadius
	Inner radius of the TPC.

float	_BField
	Magnetic field strength.

float	_distance

int	_transient

bool	_groupElectrons

int	Curler
	For full simulation of Curler set to 0, otherwise standard 1 means simplified treatment of low momentum particles.

double	aheed [8]
	Fitparameters for calculation of # clusters from Parameterisation from HEED. More...

int	numberofelectrons

double	numberofclusters

double	clusterdistance

std::vector< double >	clusterelectrons [2]
	For calculation of # electrons per cluster from Parameterisation from HEED.

double	_clusterprobcutoff

int	InTPC

double	xa

double	ya

double	za

double	xv

double	yv

double	zv

double	xend

double	yend

double	zend

double	tend

double	x_e

double	y_e

double	z_e

double	t_e

double	dx

double	dy

double	dz

double	dr

double	dp

double	px

double	py

double	pz

double	pt

double	p

double	p_const

double	energy

double	mass

double	charge

int	pdg

double	delta_x

double	delta_y

double	delta_z

Detailed Description

Processor to create primary ionisation from MCParticles passing the TPC.

Input - Prerequisites

Collection of MCParticles

Output

Collection of SimTrackerHits

Parameters

InputCollectionName	Name of input collection, MCParticles
OutputCollectionName	Name of output collection, SimTrackerHits
Transient	If not 0 the output collection is set transient
OutputType	If not 0 all ions in the TPC are returned
FullCurler	Switch detailed treatment of curlers on or off
ClusterInfo	Path to file containing information on ionisation clusters (#e- in cluster)
ClusterProbCutoff	(optional) For ClusterInfo file: set this to a value (very) slightly smaller than where the integrated probability is cut off
ClusterDensityFile	(optional) Use user-defined file with heed parametrisation of the cluster density
GroupElectrons	Flag whether to group electrons at the same position to a single hit, default: false WARNING: Turning on the `GroupElectrons` flag currently breaks the default digitisation chain (DriftProcessor and GEMProcessor). It only works with the MokkaToVoxelProcessor.

Author: Astrid Muennich

Member Function Documentation

void marlintpc::PrimaryIonisationProcessor::CalculateClusterDistance ( )

virtual

distributes number of electrons randomly along track segment.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::CalculateEnergyLoss ( )

virtual

Calculates energy loss for helix.

References dp.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::CalculateNumberOfElectrons ( )

virtual

Determines number of electrons on track segment using parametrisation obtained with HEED.

References clusterelectrons.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::CalculateTrackPointwithBfield ( )

virtual

Calculates end point of track segment with magnetic field.

References _BField, dp, px, xa, and xend.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::CalculateTrackPointwithoutBfield ( )

virtual

Calculates end point of track segment without magnetic field.

References dx, px, xa, and xend.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::InitializeTrackPoint ( )

virtual

Calculates parameters for helix like radius, so tracks can be curled if magnetic field is present.

References xa, and xend.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::MultipleScattering	(	double	phi,
		double	theta
	)

virtual

Multiple scattering for delta rays.

References RotateToDelta().

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::RotateToDelta	(	double	x,
		double	y,
		double	z
	)

virtual

Rotation for delta rays.

Referenced by MultipleScattering().

void marlintpc::PrimaryIonisationProcessor::RotateToTrack	(	double	x,
		double	y,
		double	z
	)

virtual

Rotation for delta rays.

References px.

Referenced by processEvent().

void marlintpc::PrimaryIonisationProcessor::SetParticleParameters ( lcio::MCParticle * mcparticle )

virtual

Reads in values from generator particle needed for track, like vertex, energy, momentum etc.

References px, and xv.

Referenced by processEvent().

Member Data Documentation

double marlintpc::PrimaryIonisationProcessor::aheed[8]

protected

Fitparameters for calculation of # clusters from Parameterisation from HEED.

Random generator for landau and gaussian.

Referenced by init().

double marlintpc::PrimaryIonisationProcessor::dp

protected

Scale factor for radius in case of dE/dx.

Referenced by CalculateEnergyLoss(), CalculateTrackPointwithBfield(), init(), and processEvent().

double marlintpc::PrimaryIonisationProcessor::dx

protected

Length of track segment.

Referenced by CalculateTrackPointwithoutBfield(), and init().

int marlintpc::PrimaryIonisationProcessor::InTPC

protected

#e- in one event

Referenced by init(), and processEvent().

double marlintpc::PrimaryIonisationProcessor::px

protected

Particle impulses.

Referenced by CalculateTrackPointwithBfield(), CalculateTrackPointwithoutBfield(), init(), processEvent(), RotateToTrack(), and SetParticleParameters().

double marlintpc::PrimaryIonisationProcessor::x_e

protected

e- coordinate on track segment.

double marlintpc::PrimaryIonisationProcessor::xa

protected

Start point of track segment.

Referenced by CalculateTrackPointwithBfield(), CalculateTrackPointwithoutBfield(), init(), and InitializeTrackPoint().

double marlintpc::PrimaryIonisationProcessor::xend

protected

End point of track segment.

Referenced by CalculateTrackPointwithBfield(), CalculateTrackPointwithoutBfield(), init(), InitializeTrackPoint(), and processEvent().

double marlintpc::PrimaryIonisationProcessor::xv

protected

Vertex of particle.

Referenced by init(), processEvent(), and SetParticleParameters().

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

PrimaryIonisationProcessor.h
PrimaryIonisationProcessor.cc

Public Member Functions

Protected Attributes

Detailed Description

Input - Prerequisites

Output

Member Function Documentation

Member Data Documentation