marlintpc::RawDataCutterProcessor Class Reference

This processor is used to select in the raw data only a part of the time spectrum, in fact shortening the time window of the data acquired. More...

#include <RawDataCutterProcessor.h>

Inheritance diagram for marlintpc::RawDataCutterProcessor:

Public Member Functions
virtual Processor *	newProcessor ()
virtual void	init ()
	Called at the begin of the job before anything is read. More...
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	check (lcio::LCEvent *evt)
virtual void	end ()
	Called after data processing for clean up.

Protected Attributes
std::string	_inputcolName
	Input collection name.
std::string	_outcolName
	Output collection name.
bool	_outputIsPersistent
	Set the persistency flag of the output collection.
int	_maxTimeBin
	Maximum time value allowed in the tracker raw data. More...
int	_startOffset
	Number of time bins at the start of the collection window which would correspond to data collected at negative drift lengths. More...
float	_driftVelocity
	Electron drift velocity (mm/us) used to compute the maximum time necessary to drift through the TPC.
float	_driftLength
	Maximum TPC drift length (mm). More...
float	_readoutFreq
	Readout frequency of the electronics (MHz)
int	_endOffset
	Safety Offset to be added at the Maximum drift time calculated.
std::string	_TPCConditionsCollName
	Name of the collection containing the TPC Conditions i.e. More...
std::string	_ADCElectronicsCollName
	Name of the collection containing the GenericADCElectronicsParameters i.e. More...
bool	_shortenPulse
	Boolean selector that specifies whether to shorten the pulses started before the filter time but continuing afterwards.

Detailed Description

This processor is used to select in the raw data only a part of the time spectrum, in fact shortening the time window of the data acquired.

This processor cuts all the data arriving later than the maximum drift time to clean up the raw data before the main processing phase.

The user can set the length of this time window manually specifying the maximum number of time bins allowed, or this value can be calculated from the condition data

Input - Prerequisites

Needs the collection of TrackerRawData

Output

Collection of TrackerRawData

Parameters

InputCollectionName:string	Name of the input tracker raw data collection
OutputCollectionName:string	Name of the collection where to store the corrected data
WriteOutputToStorage:bool	If true the output collection is written to file
MaxTimeBinOverride:int	Set this parameter if you want to define manually the maximum time bin length. No calculation will be executed
StartOffset:int	Defines the time bin of the anode position
DriftVelocityOverride:float	Defines the drift velocity in mm/us. If set the data in the condition database will not be considered
DriftLengthOverride:float	Defines the maximum drift length in mm of the TPC. If set the data in the GEAR file will not be considered
ReadoutFrequencyOverride:float	Defines the electronics readout frequency in MHz. If set the data in the condition database will not be considered
EndOffset:int	Defines the time bin to add to the calculated maximum as a safety factor
TPCConditionsCollName:string	Defines the name of the condition collection containing the drift velocity
ADCElectronicsCollName:string	Defines the name of the condition collection containing the readout frequency

Author

S. Caiazza, DESY

Version

Id:

RawDataCutterProcessor.h,v 1.0 2011-10-13 12:57:39 caiazza Exp

Member Function Documentation

void marlintpc::RawDataCutterProcessor::init ( )

virtual

Called at the begin of the job before anything is read.

Use to initialize the processor, e.g. book histograms.

References _ADCElectronicsCollName, _driftLength, _driftVelocity, _endOffset, _maxTimeBin, _readoutFreq, _startOffset, _TPCConditionsCollName, and marlintpc::ADCElectronicsListener::useLastValidIfNoDataAvailable().

Member Data Documentation

std::string marlintpc::RawDataCutterProcessor::_ADCElectronicsCollName

protected

Name of the collection containing the GenericADCElectronicsParameters i.e.

readout frequency

Referenced by init().

float marlintpc::RawDataCutterProcessor::_driftLength

protected

Maximum TPC drift length (mm).

The length of the TPC used to calculate the maximum drift time

Referenced by init(), and processEvent().

int marlintpc::RawDataCutterProcessor::_maxTimeBin

protected

Maximum time value allowed in the tracker raw data.

The processor will cut all data after this value

Referenced by init(), and processEvent().

int marlintpc::RawDataCutterProcessor::_startOffset

protected

Number of time bins at the start of the collection window which would correspond to data collected at negative drift lengths.

I.e. The DAQ could store some time bin before the trigger comes or the delays of the DAQ could be set in such a way that the electrons produced at the anode of the TPC are not at time bin 0.

Referenced by init(), and processEvent().

std::string marlintpc::RawDataCutterProcessor::_TPCConditionsCollName

protected

Name of the collection containing the TPC Conditions i.e.

drift velocity

Referenced by init().

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

• RawDataCutterProcessor.h
• RawDataCutterProcessor.cc