Class to perform template fit on TOP waveform data Minimzation method is described here http://wwwa1.kph.uni-mainz.de/Vorlesungen/SS11/Statistik/. More...

#include <TOPTemplateFitter.h>

Collaboration diagram for TOPTemplateFitter:

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Classes
struct	FitResult
	structure holding values from template fit More...

struct	MinimizationSums
	Variables used during template fit minimization. More...

struct	TemplateParameters
	Parameters of the template function. More...

Public Member Functions
	TOPTemplateFitter (const TOPRawWaveform &wf, const TOPSampleTimes &sampleTimes, const double averageRMS)
	full constructor More...

	~TOPTemplateFitter ()
	default destructor

double	getChisq () const
	Returns fit chi square. More...

const std::vector< double > &	getChisqVector () const
	Returns calculated chisq values. More...

const FitResult &	getFitResult () const
	Returns fitted values with errors. More...

void	performTemplateFit (const double risingEdgeStart, const double fitRange)
	Prepares data and performs the template fit in sample space. More...

Static Public Member Functions
static TemplateParameters &	getTemplateParameters ()
	Returns the template parameters. More...

static int	getTemplateSamples ()
	Returns the total number of template samples. More...

static int	getTemplateResolution ()
	Returns the template resolution. More...

static bool	getUseParabola ()
	Returns useParabola. More...

static void	setTemplateParameters (const TemplateParameters &params)
	Sets the template parameters. More...

static void	setTemplateSamples (int nSamples)
	Set the total number of template samples. More...

static void	setTemplateResolution (int resolution)
	Set the template resolution. More...

static void	setUseParabola (bool use)
	Enable Usage of parabola improvement. More...

static void	InitializeTemplateFit ()
	Intializes the template fit using default values.

Private Member Functions
void	PerformTemplateFitMinimize (const std::vector< short > &samples, const std::vector< short > &pedestals, const std::vector< float > &timingCorrection, const double risingEdgeCFD, const double fitRange)
	performs the template fit More...

double	ComputeMinimizedParametersAndChisq (const MinimizationSums &sums, FitResult &result)
	Compute the minimized parameters and chi square value. More...

void	CalculateParabolaVertex (const Point &p1, const Point &p2, const Point &p3, Point &vertex)
	Calculate vertex coordinates of parabola given three data points. More...

Private Attributes
const TOPRawWaveform	m_wf
	raw sampled waveforms

const TOPSampleTimes	m_sampleTimes
	provides timing correction

const double	m_averageRMS
	average RMS of waveform samples, no database for this

FitResult	m_result
	fit result from template fit

double	m_chisq = 0
	chi square value from template fit

std::vector< double >	m_chisq_vec
	all computed chi square values from template fit

Static Private Attributes
static int	s_totalTemplateSamples = 64
	number of samples used for template

static int	s_templateResolution = 4
	resolution of template with respect to normal sample spacing

static TemplateParameters	s_templateParameters
	parameters used for the template calculation

static std::vector< double >	s_templateSamples
	precomputed template samples

static int	s_fineOffsetRange = TOPTemplateFitter::s_templateResolution * 5
	range for offset between template and signal

static bool	s_templateReInitialize = true
	flag showing that the template samples have to be recomputed

static bool	s_useParabola = true
	try improving fit by making use of parabolic shape of chisq values

Detailed Description

Class to perform template fit on TOP waveform data Minimzation method is described here http://wwwa1.kph.uni-mainz.de/Vorlesungen/SS11/Statistik/.

Author: Tobias Weber

Definition at line 41 of file TOPTemplateFitter.h.

Constructor & Destructor Documentation

◆ TOPTemplateFitter()

TOPTemplateFitter	(	const TOPRawWaveform &	wf,
		const TOPSampleTimes &	sampleTimes,
		const double	averageRMS
	)

full constructor

Parameters

wf	TOP raw waveform samples
sampleTimes	database object holding time correction
averageRMS	average sample RMS

Definition at line 30 of file TOPTemplateFitter.cc.

   : m_wf(wf), m_sampleTimes(sampleTimes), m_averageRMS(averageRMS)
 {
   m_chisq = -1.;
   if (s_templateReInitialize) {
     InitializeTemplateFit();
   }
 }

Member Function Documentation

◆ CalculateParabolaVertex()

void CalculateParabolaVertex	(	const Point &	p1,
		const Point &	p2,
		const Point &	p3,
		Point &	vertex
	)

private

Calculate vertex coordinates of parabola given three data points.

Parameters

p1	data point 1
p2	data point 2
p3	data point 3
vertex	vertex position

Definition at line 110 of file TOPTemplateFitter.cc.

◆ ComputeMinimizedParametersAndChisq()

double ComputeMinimizedParametersAndChisq	(	const MinimizationSums &	sums,
		FitResult &	result
	)

private

Compute the minimized parameters and chi square value.

Parameters

sums	minimization sums for chisq calculation
result	minimized parameters

Returns: chi square

Definition at line 167 of file TOPTemplateFitter.cc.

◆ getChisq()

double getChisq ( ) const

inline

Returns fit chi square.

Returns: fit chi square

Definition at line 120 of file TOPTemplateFitter.h.

124 {return m_result;}

◆ getChisqVector()

const std::vector<double>& getChisqVector ( ) const

inline

Returns calculated chisq values.

Returns: chisq vector

Definition at line 126 of file TOPTemplateFitter.h.

◆ getFitResult()

const FitResult& getFitResult ( ) const

inline

Returns fitted values with errors.

Returns: fitted values with errors

Definition at line 132 of file TOPTemplateFitter.h.

◆ getTemplateParameters()

static TemplateParameters& getTemplateParameters ( )

inlinestatic

Returns the template parameters.

Returns: template parameters

Definition at line 138 of file TOPTemplateFitter.h.

◆ getTemplateResolution()

static int getTemplateResolution ( )

inlinestatic

Returns the template resolution.

Returns: template resolution

Definition at line 150 of file TOPTemplateFitter.h.

◆ getTemplateSamples()

static int getTemplateSamples ( )

inlinestatic

Returns the total number of template samples.

Returns: total number of template samples

Definition at line 144 of file TOPTemplateFitter.h.

◆ getUseParabola()

static bool getUseParabola ( )

inlinestatic

Returns useParabola.

Returns: useParabola

Definition at line 156 of file TOPTemplateFitter.h.

◆ performTemplateFit()

void performTemplateFit	(	const double	risingEdgeStart,
		const double	fitRange
	)

Prepares data and performs the template fit in sample space.

Parameters

risingEdgeStart	initial guess for rising edge position from CFD
fitRange	range of template fit

Definition at line 80 of file TOPTemplateFitter.cc.

◆ PerformTemplateFitMinimize()

void PerformTemplateFitMinimize	(	const std::vector< short > &	samples,
		const std::vector< short > &	pedestals,
		const std::vector< float > &	timingCorrection,
		const double	risingEdgeCFD,
		const double	fitRange
	)

private

performs the template fit

Parameters

samples	sample vector
pedestals	pedestal vector
timingCorrection	timing correction for samples
risingEdgeCFD	rising edge from constant fraction discrimination
fitRange	fit range

Definition at line 124 of file TOPTemplateFitter.cc.

◆ setTemplateParameters()

void setTemplateParameters ( const TemplateParameters & params )

static

Sets the template parameters.

Parameters

params template Parameters

Definition at line 41 of file TOPTemplateFitter.cc.

◆ setTemplateResolution()

void setTemplateResolution ( int resolution )

static

Set the template resolution.

Parameters

resolution template resolution

Definition at line 54 of file TOPTemplateFitter.cc.

◆ setTemplateSamples()

void setTemplateSamples ( int nSamples )

static

Set the total number of template samples.

Parameters

nSamples total number of template samples

Definition at line 47 of file TOPTemplateFitter.cc.

◆ setUseParabola()

static void setUseParabola ( bool use )

inlinestatic

Enable Usage of parabola improvement.

Parameters

use	enable/disable usage

Definition at line 180 of file TOPTemplateFitter.h.

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

top/utilities/include/TOPTemplateFitter.h
top/utilities/src/TOPTemplateFitter.cc

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ TOPTemplateFitter()

Member Function Documentation

◆ CalculateParabolaVertex()

◆ ComputeMinimizedParametersAndChisq()

◆ getChisq()

◆ getChisqVector()

◆ getFitResult()

◆ getTemplateParameters()

◆ getTemplateResolution()

◆ getTemplateSamples()

◆ getUseParabola()

◆ performTemplateFit()

◆ PerformTemplateFitMinimize()

◆ setTemplateParameters()

◆ setTemplateResolution()

◆ setTemplateSamples()

◆ setUseParabola()