marlintpc::HitTimeRecalculationProcessor Class Reference

This processor recalculates the time of the hit based on the highest pulse in the hit according to the choosen time evaluation method. More...

#include <HitTimeRecalculationProcessor.h>

Inheritance diagram for marlintpc::HitTimeRecalculationProcessor:

Public Member Functions
virtual Processor *	newProcessor ()
virtual void	init ()
virtual void	processRunHeader (lcio::LCRunHeader *run)
virtual void	processEvent (lcio::LCEvent *evt)
virtual void	check (lcio::LCEvent *evt)
virtual void	end ()

Protected Member Functions
double	_getDriftVelocity ()

Protected Attributes
std::string	_inputColName
	name of the collection, where input TrackerHits are stored
std::string	_outputColName
	name of the collection, where TrackerHits are stored
std::string	_pedestalColName
	the name of the pedestal collection
std::string	_electrParaObjName
	Name of the conditions object in which the parameters of the read out electronics is stored.
std::string	_electrParaColName
	Name of the conditions collection in which the parameters of the read out electronics is stored.
std::string	_inputTPCConditionsCollectionName
	the name of the collection the TPC conditions are stored with
TPCConditionsListener *	_tpcConditionsListener
	the standard way to access TPC conditions: the TPCConditions object via listening
int	_timeCalculationMode
	the mode to calulate the time
double	_timeCalculationParameter
	parameter for time methods (different meaning for different methods)
float	_pulseStartPedestalWidthFactor
	factor to calculate the start threshold
float	_noiseValuePedestalWidthFactor
	factor to calculate the noise cut
float	_readoutFrequencyOverride
	The readout frequency of every readout group (in MHz). More...
float	_pedestalValueOverride
	The pedestal value to be used for every hardware channel in every readout group. More...
float	_pedestalWidthOverride
	The pedestal width to be used for every hardware channel in every readout group. More...
bool	_isPedestalSubtractedOverride
	Sets, if the data is already pedestal subtracted in the read-out electronics. More...
int	_polarityOverride
	the polarity of all readout groups, overrides LCCD
float	_driftVelocityOverride
	drift velocity in [mm/mu s]
PulseFinder *	_pulseFinder
	The instance of the pulse finder object.

Detailed Description

This processor recalculates the time of the hit based on the highest pulse in the hit according to the choosen time evaluation method.

Input - Prerequisites

Collection of TrackerHits

Output

• Collection of TrackerHits

Parameters

InputCollectionName:string	Name of the input TrackerHit collection
OutputCollectionName:string	Name of the output TrackerHit collection
PulseStartPedestalWidthFactor:float	A pulse starts if the ADC value is this factor times width of the pedestal (default: : 4.0)
NoiseValuePedestalWidthFactor:float	The noise (cut) value is calculated as this factor times pedestal width (default: 3.0)
ElectronicsParameterObjectName:string	Name of the conditions object in which the parameters of the read out electronics is stored
ElectronicsParametersCollectionName:string	Name of the conditions collection in which the parameters of the read out electronics is stored
PedestalCollectionName:string	Name of the conditions collection in which the pedestals are stored
TimeCalculationMode:int	Specifies the mode for time calculation. Valid values: INFLEXION_POINT = 0 (default) FIT_PARABOLA = 1 CENTRE_OF_GRAVITY = 2 FIRST_ABOVE_THRESHOLD = 3 AT_MAXIMUM = 4 CONSTANT_FRACTION = 5 GAMMA_FIT = 6 COG_ATMAX = 7
PedestalValueOverride	OPTIONAL: Manually set the pedestal value (in ADC counts)
PedestalWidthOverride	OPTIONAL: Manually set value of the pedestal width (in ADC coutns)
IsPedestalSubtractedOverride	OPTIONAL: Manually set whether the pedestal has been subtracted (true or false)
SignalPolarityOverride	OPTIONAL: Manually set value of the electronics polarity (+-1)
ReadoutFrequencyOverride	OPTIONAL: Manually set value of the readout frequency (in MHz)
PlateauLengthCutOff	OPTIONAL: The maximum length of a plateau within a pulse in time bins. This used to cut off strange pulses that go into a plateau.

As the interpretation of the data changes with the charge calculation mode (all charge or max charge) or the time calculation mode (different offsets), the parameters TimeCalculationMode and ChargeCalculationMode are stored as collection parameters of the pulse collection (in addition to being written to the run header together with all other processor parameters).

Author

ChA. Muennich, DESY

Member Data Documentation

bool marlintpc::HitTimeRecalculationProcessor::_isPedestalSubtractedOverride

protected

Sets, if the data is already pedestal subtracted in the read-out electronics.

This overrides any information provided by LCCD

float marlintpc::HitTimeRecalculationProcessor::_pedestalValueOverride

protected

The pedestal value to be used for every hardware channel in every readout group.

This overrides any information provided by LCCD

float marlintpc::HitTimeRecalculationProcessor::_pedestalWidthOverride

protected

The pedestal width to be used for every hardware channel in every readout group.

This overrides any information provided by LCCD

float marlintpc::HitTimeRecalculationProcessor::_readoutFrequencyOverride

protected

The readout frequency of every readout group (in MHz).

This overrides any information provided by LCCD

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

• HitTimeRecalculationProcessor.h
• HitTimeRecalculationProcessor.cc