cbm::algo::trd::HitMerger2D Class Reference

Cluster finding and hit reconstruction algorithms for the TRD(2D) module. More...

#include <HitMerger2D.h>

Collaboration diagram for cbm::algo::trd::HitMerger2D:

Public Types
typedef std::pair< Hit, std::vector< DigiRec > >	inputType
typedef std::pair< std::vector< inputType >, std::vector< inputType > >	outputType

Public Member Functions
	HitMerger2D ()
	Default constructor.
	HitMerger2D (HitFinder2DModPar params)
	Constructor with placement.
virtual	~HitMerger2D ()
outputType	operator() (std::vector< inputType > &hitsRow1, std::vector< inputType > &hitsRow2)
	Steering routine for building hits.
std::pair< int, HitFactory2D >	ProjectDigis (std::vector< DigiRec > *cid, std::vector< DigiRec > *cjd)
int	CheckMerge (std::vector< DigiRec > *cid, std::vector< DigiRec > *cjd)
	Implement topologic cuts for hit merging.
bool	MergeHits (Hit *h, int a0, HitFactory2D &hitF)
	Algorithm for hit merging.
void	SetHitTimeOffset (int dt)
	Time offset to synchronize TRD2D hits to the rest of detectors.

Private Member Functions
	HitMerger2D (const HitMerger2D &ref)
const HitMerger2D &	operator= (const HitMerger2D &ref)
Hit	MakeHit (int cId)
void	CalibrateHit (Hit *h, const double dx, const double dy, const double edx, const double edy, const double edt, const double time, const double tdrift, const double eloss, const HitFactory2D &hitF)
int	GetPadRowCol (int address, int &c)
	Addressing ASIC on module based on id.

Private Attributes
const float	fClk = CbmTrdDigi::Clk(CbmTrdDigi::eCbmTrdAsicType::kFASP)
HitFinder2DModPar	fParams
	Parameter container.
int	fHitTimeOff = 0

Detailed Description

Cluster finding and hit reconstruction algorithms for the TRD(2D) module.

Author

Alexandru Bercucic aberc.nosp@m.uci@.nosp@m.niham.nosp@m..nip.nosp@m.ne.ro

Since

01.02.2019

Date

01.10.2021

Extend the TRD module reconstructor for the particular case of inner TRD-2D modules. The class is a collection of algorithms to :

• identify time and spatially correlated digis and build clusters
• identify the type of clusters and apply further merging/deconvolution
• apply FEE (channel gain, baseline) and detector (energy gain, maps, etc) calibration
• steer the calculation of hit 4D parameters (x, y, t, E)

Definition at line 40 of file HitMerger2D.h.

Member Typedef Documentation

inputType

typedef std::pair<Hit, std::vector<DigiRec> > cbm::algo::trd::HitMerger2D::inputType

Definition at line 42 of file HitMerger2D.h.

outputType

typedef std::pair<std::vector<inputType>, std::vector<inputType> > cbm::algo::trd::HitMerger2D::outputType

Definition at line 43 of file HitMerger2D.h.

Constructor & Destructor Documentation

HitMerger2D() [1/3]

cbm::algo::trd::HitMerger2D::HitMerger2D ( )

inline

Default constructor.

Definition at line 46 of file HitMerger2D.h.

Referenced by HitMerger2D(), and operator=().

HitMerger2D() [2/3]

cbm::algo::trd::HitMerger2D::HitMerger2D

(

HitFinder2DModPar

params

)

Constructor with placement.

Definition at line 20 of file HitMerger2D.cxx.

References fParams.

~HitMerger2D()

virtual cbm::algo::trd::HitMerger2D::~HitMerger2D ( )

inlinevirtual

Definition at line 51 of file HitMerger2D.h.

HitMerger2D() [3/3]

cbm::algo::trd::HitMerger2D::HitMerger2D ( const HitMerger2D & ref )

private

References HitMerger2D().

Member Function Documentation

CalibrateHit()

void cbm::algo::trd::HitMerger2D::CalibrateHit ( Hit * h, const double dx, const double dy, const double edx, const double edy, const double edt, const double time, const double tdrift, const double eloss, const HitFactory2D & hitF )

private

Definition at line 272 of file HitMerger2D.cxx.

References fClk, fHitTimeOff, fParams, cbm::algo::trd::HitFactory2D::HasOvf(), cbm::algo::trd::HitFactory2D::IsMaxTilt(), cbm::algo::trd::HitFactory2D::vcM, cbm::algo::trd::HitFactory2D::vrM, and cbm::algo::trd::HitFactory2D::vt0.

Referenced by MergeHits().

CheckMerge()

int cbm::algo::trd::HitMerger2D::CheckMerge	(	std::vector< DigiRec > *	cid,
		std::vector< DigiRec > *	cjd )

Implement topologic cuts for hit merging.

Returns

index of anode wire wrt to boundary or 0 if check fails

Check topologic conditions if the 2 clusters (in digi representation) can be merged. The first pair is always from the bottom row return the anode candidate wrt boundary 1, 2, 3 for the first 3 anodes of the upper row; -1, -2, -3 for the bottom row (r0) or 0 if the check fails

Definition at line 87 of file HitMerger2D.cxx.

References GetPadRowCol().

Referenced by operator()().

GetPadRowCol()

int cbm::algo::trd::HitMerger2D::GetPadRowCol ( int address, int & c )

inlineprivate

Addressing ASIC on module based on id.

Parameters

[in]

id

module wise ASIC identifier

Returns

ASIC address within experiment

Definition at line 513 of file HitMerger2D.cxx.

References fParams.

Referenced by CheckMerge(), and ProjectDigis().

MakeHit()

Hit cbm::algo::trd::HitMerger2D::MakeHit ( int cId )

private

MergeHits()

bool cbm::algo::trd::HitMerger2D::MergeHits	(	Hit *	h,
		int	a0,
		HitFactory2D &	hitF )

Algorithm for hit merging.

Parameters

[in]	h	hit to be modified by addition of hp.
[in]	a0	anode hypothesis around boundary (see CheckMerge function).

Returns

TRUE if succesful.

Definition at line 202 of file HitMerger2D.cxx.

References CalibrateHit(), cbm::algo::trd::HitFactory2D::CorrectPosition(), fParams, cbm::algo::trd::HitFactory2D::fSignal, cbm::algo::trd::HitFactory2D::GetDxDy(), cbm::algo::trd::HitFactory2D::GetHitClass(), cbm::algo::trd::HitFactory2D::GetHitRcClass(), cbm::algo::trd::HitFactory2D::GetXcorr(), cbm::algo::trd::HitFactory2D::IsBiasX(), cbm::algo::trd::HitFactory2D::IsBiasXleft(), cbm::algo::trd::HitFactory2D::RecenterXoffset(), and cbm::algo::trd::HitFactory2D::vyM.

Referenced by operator()().

operator()()

HitMerger2D::outputType cbm::algo::trd::HitMerger2D::operator()	(	std::vector< inputType > &	hitsRow1,
		std::vector< inputType > &	hitsRow2 )

Steering routine for building hits.

Definition at line 23 of file HitMerger2D.cxx.

References CheckMerge(), fParams, cbm::algo::trd::Hit::IsUsed(), MergeHits(), ProjectDigis(), cbm::algo::trd::Hit::SetRowCross(), cbm::algo::trd::Hit::Time(), cbm::algo::trd::Hit::X(), and cbm::algo::trd::Hit::Y().

operator=()

const HitMerger2D & cbm::algo::trd::HitMerger2D::operator= ( const HitMerger2D & ref )

private

References HitMerger2D().

ProjectDigis()

std::pair< int, HitFactory2D > cbm::algo::trd::HitMerger2D::ProjectDigis	(	std::vector< DigiRec > *	cid,
		std::vector< DigiRec > *	cjd )

Load digis information in working vectors Digis are represented in the normal coordinate system of (pad width [pw], DAQ time [clk], signal [ADC chs]) with rectangular signals at integer positions.

Definition at line 295 of file HitMerger2D.cxx.

References fParams, cbm::algo::trd::HitFactory2D::fSignal, CbmTrdDigi::GetAddressChannel(), GetPadRowCol(), cbm::algo::trd::DigiRec::GetRectCharge(), cbm::algo::trd::DigiRec::GetRectTime(), cbm::algo::trd::DigiRec::GetTiltCharge(), cbm::algo::trd::DigiRec::GetTiltTime(), CbmTrdDigi::GetTimeDAQ(), cbm::algo::trd::DigiRec::HasRectOvf(), cbm::algo::trd::DigiRec::HasTiltOvf(), L_, max(), cbm::algo::trd::HitFactory2D::reset(), cbm::algo::trd::HitFactory2D::SetBiasX(), cbm::algo::trd::HitFactory2D::SetBiasXleft(), cbm::algo::trd::HitFactory2D::SetBiasXmid(), cbm::algo::trd::HitFactory2D::SetBiasXright(), cbm::algo::trd::HitFactory2D::SetBiasY(), cbm::algo::trd::HitFactory2D::SetBiasYleft(), cbm::algo::trd::HitFactory2D::SetBiasYmid(), cbm::algo::trd::HitFactory2D::SetBiasYright(), cbm::algo::trd::HitFactory2D::SetLeftHit(), cbm::algo::trd::HitFactory2D::SetLeftSgn(), cbm::algo::trd::HitFactory2D::SetMaxTilt(), cbm::algo::trd::HitFactory2D::SetOvf(), cbm::algo::trd::HitFactory2D::SetSymmHit(), cbm::algo::trd::HitFactory2D::vcM, cbm::algo::trd::HitFactory2D::viM, cbm::algo::trd::HitFactory2D::vrM, and cbm::algo::trd::HitFactory2D::vt0.

Referenced by operator()().

SetHitTimeOffset()

void cbm::algo::trd::HitMerger2D::SetHitTimeOffset ( int dt )

inline

Time offset to synchronize TRD2D hits to the rest of detectors.

Parameters

dt	offset in [ns]

Definition at line 72 of file HitMerger2D.h.

References fHitTimeOff.

Member Data Documentation

fClk

const float cbm::algo::trd::HitMerger2D::fClk = CbmTrdDigi::Clk(CbmTrdDigi::eCbmTrdAsicType::kFASP)

private

Definition at line 80 of file HitMerger2D.h.

Referenced by CalibrateHit().

fHitTimeOff

int cbm::algo::trd::HitMerger2D::fHitTimeOff = 0

private

Definition at line 93 of file HitMerger2D.h.

Referenced by CalibrateHit(), and SetHitTimeOffset().

fParams

HitFinder2DModPar cbm::algo::trd::HitMerger2D::fParams

private

Parameter container.

Definition at line 82 of file HitMerger2D.h.

Referenced by CalibrateHit(), GetPadRowCol(), HitMerger2D(), MergeHits(), operator()(), and ProjectDigis().

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

• HitMerger2D.h
• HitMerger2D.cxx