StEpdEpFinder Class Reference

Public Member Functions
	StEpdEpFinder (int nEventTypeBins=10, char const *OutFileName="StEpdEpFinderCorrectionHistograms_OUTPUT.root", char const *CorrectionFileName="StEpdEpFinderCorrectionHistograms_INPUT.root")
void	SetEtaWeights (int order, TH2D EtaWeight)
void	SetRingWeights (int order, double *RingWeights)
void	SetnMipThreshold (double thresh)
void	SetMaxTileWeight (double MAX)
void	SetEpdHitFormat (int format)
void	Finish ()
StEpdEpInfo	Results (TClonesArray *EpdHits, TVector3 primVertex, int EventTypeID)
TString	Report ()

Detailed Description

Definition at line 100 of file StEpdEpFinder.h.

Constructor & Destructor Documentation

StEpdEpFinder::StEpdEpFinder	(	int	nEventTypeBins = 10,
		char const *	OutFileName = "StEpdEpFinderCorrectionHistograms_OUTPUT.root",
		char const *	CorrectionFileName = "StEpdEpFinderCorrectionHistograms_INPUT.root"
	)

Constructor. Initializes values and reads correction file, if it exists. This file is actually PRODUCED by the code in an earlier run. The user must rename the file StEpdEpFinderCorrectionHistograms_OUTPUT.root if he wants to use it.

Parameters

CorrectionFileName	Full name of the .root file with correction histograms.
nEventTypeBins	Number of EventType bins that the user is using. Up to the user to have a consistent usage, here and in analysis.

Definition at line 18 of file StEpdEpFinder.cxx.

Member Function Documentation

void StEpdEpFinder::Finish

(

)

call this method at the end of your run to output correction histograms to a file (you can choose to use these or not) and to calculate EP resolutions

Definition at line 130 of file StEpdEpFinder.cxx.

TString StEpdEpFinder::Report

(

)

Returns a big string that tells in text what the settings were. This is for your convenience and is of course optional. I like to put a concatenation of such Reports into a text file, so I "autodocument" what were the settings for a given run

Definition at line 418 of file StEpdEpFinder.cxx.

StEpdEpInfo StEpdEpFinder::Results	(	TClonesArray *	EpdHits,
		TVector3	primVertex,
		int	EventTypeID
	)

returns all information about the EP. A large object of type StEpdEpInfo is returned, so you don't have to call the StEpdEpFinder over and over again for various information

Parameters

EpdHits	Epd Hits in a TClones array. Will be decoded as StEpdHit, StMuEpdHit, or StPicoEpdHit as dictated by mFormatUsed
primVertex	primary vertex position for this event
EventTypeID	user-defined integer specifying EventType of the event. User must use same convention in correction histograms and weights

note the "+1" since EventTypeId begins at zero

note the "+1" since EventTypeId begins at zero

Definition at line 148 of file StEpdEpFinder.cxx.

References StPicoEpdHit::adc(), StPicoEpdHit::id(), StPicoEpdHit::nMIP(), StPicoEpdHit::position(), StPicoEpdHit::row(), and StPicoEpdHit::tile().

void StEpdEpFinder::SetEpdHitFormat ( int  format )

inline

sets the EpdHit format 0=StEvent, 1=StMuDst; 2=StPicoDst. Default is 2

Definition at line 198 of file StEpdEpFinder.h.

void StEpdEpFinder::SetEtaWeights	(	int	order,
		TH2D	EtaWeight
	)

sets eta-based weights and sets the flag indicating that eta-based weights will be used The x-axis of the TH2D is abs(eta). The y-axis is EventTypeID (according to whatever convention/definition the user is using)

Parameters

order	order of the EP Begins at UNITY! i.e. order=1 means first-order plane, order=2 means 2nd-order plane, ...
EtaWeight	histogram with the weights as a function of |eta| and EventType

Definition at line 101 of file StEpdEpFinder.cxx.

void StEpdEpFinder::SetMaxTileWeight ( double  MAX )

inline

sets the maximum weight, in units of nMIP, for determining tile weights TileWeight = (EpdHit->nMIP()>thresh)?((EpdHit->nMIP()>MAX)?MAX:EpdHit->nMIP()):0;

Parameters

MAX	maximum tile weight. If epdHit->nMIP()>MAX then weight=MAX

Definition at line 197 of file StEpdEpFinder.h.

void StEpdEpFinder::SetnMipThreshold ( double  thresh )

inline

sets the threshold, in units of nMIP, for determining tile weights TileWeight = (EpdHit->nMIP()>thresh)?((EpdHit->nMIP()>MAX)?MAX:EpdHit->nMIP()):0;

Parameters

thresh

threshold. If epdHit->nMIP() is less than thresh, then weight is zero

Definition at line 196 of file StEpdEpFinder.h.

void StEpdEpFinder::SetRingWeights	(	int	order,
		double *	RingWeights
	)

sets ring-based weights and sets the flag indicating that the ring-based weights will be used

Parameters

order	order of the EP Begins at UNITY! i.e. order=1 means first-order plane, order=2 means 2nd-order plane, ...
RingWeights	1D array of length 16, containing the RingWeights

Definition at line 115 of file StEpdEpFinder.cxx.

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

• StEpdUtil/StEpdEpFinder.h
• StEpdUtil/StEpdEpFinder.cxx