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ZDCFitExpFermiPrePulse Class Reference

#include <ZDCFitWrapper.h>

Inheritance diagram for ZDCFitExpFermiPrePulse:
Collaboration diagram for ZDCFitExpFermiPrePulse:

Public Member Functions

 ZDCFitExpFermiPrePulse (const std::string &tag, float tmin, float tmax, float tau1, float tau2)
 ~ZDCFitExpFermiPrePulse ()
virtual void DoInitialize (float initialAmp, float initialT0, float ampMin, float ampMax) override
virtual void SetT0FitLimits (float tMin, float tMax) override
virtual void SetInitialPrePulse (float amp, float t0, float, bool) override
virtual void SetPrePulseT0Range (float tmin, float tmax) override
virtual void SetPostPulseT0Range (float, float, float) override
virtual void ConstrainFit () override
virtual void UnconstrainFit () override
virtual unsigned int GetPreT0ParIndex () const override
virtual float GetAmplitude () const override
virtual float GetAmpError () const override
virtual float GetTau1 () const override
virtual float GetTau2 () const override
virtual float GetPreT0 () const override
virtual float GetPreAmp () const override
virtual float GetPostT0 () const override
virtual float GetPostAmp () const override
virtual float GetExpAmp () const override
virtual float GetTime () const override
virtual unsigned int GetNumShapeParameters () const override
virtual float GetShapeParameter (size_t index) const override
virtual float GetBkgdMaxFraction () const override
virtual double operator() (const double *x, const double *p) override
void Initialize (float initialAmp, float initialT0, float ampMin, float ampMax)
void Initialize (float initialAmp, float initialT0, float ampMin, float ampMax, float fitTmin, float fitTmax, float fitTRef)
void SetAmpMinMax (float minAmp, float maxAmp)
void SetT0Range (float t0Min, float t0Max)
float GetMinAmp () const
float GetMaxAmp () const
float GetTMin () const
float GetTMax () const
float GetT0Min () const
float GetT0Max () const
float GetTMinAdjust () const
virtual std::shared_ptr< TF1 > GetWrapperTF1 ()
virtual const TF1 * GetWrapperTF1 () const
virtual TF1 * GetWrapperTF1RawPtr () const

Protected Attributes

float m_preT0Min
float m_preT0Max

Private Attributes

float m_tau1 {0}
float m_tau2 {0}
float m_norm {0}
float m_timeCorr {0}
std::shared_ptr< TF1 > m_expFermiFunc = 0
std::shared_ptr< TF1 > m_expFermiPreFunc = 0
std::shared_ptr< TF1 > m_wrapperTF1 {}
float m_tmin {0}
float m_tmax {0}
float m_ampMin {0}
float m_ampMax {0}
float m_t0Min {0}
float m_t0Max {0}
bool m_adjTLimitsEvent {false}
float m_tminAdjust {0}
float m_tempTmin {0}
float m_tempTmax {0}

Detailed Description

Definition at line 432 of file ZDCFitWrapper.h.

Constructor & Destructor Documentation

◆ ZDCFitExpFermiPrePulse()

ZDCFitExpFermiPrePulse::ZDCFitExpFermiPrePulse ( const std::string & tag,
float tmin,
float tmax,
float tau1,
float tau2 )

Definition at line 356 of file ZDCFitWrapper.cxx.

356 :
357 ZDCPrePulseFitWrapper(std::make_shared<TF1>(("ExpFermiPrePulse" + tag).c_str(), this, tmin, tmax, 5)),
358 m_tau1(tau1), m_tau2(tau2)
359{
360 // Create the reference function that we use to evaluate ExpFermiFit more efficiently
361 //
362 std::string funcNameRefFunc = "ExpFermiPrePulseRefFunc" + tag;
363
364 m_expFermiFunc = std::make_shared<TF1>(funcNameRefFunc.c_str(), ZDCFermiExpFit, -50, 100, 5);
365
366 m_expFermiFunc->SetParameter(0, 1);
367 m_expFermiFunc->SetParameter(1, 0);
368 m_expFermiFunc->SetParameter(2, m_tau1);
369 m_expFermiFunc->SetParameter(3, m_tau2);
370 m_expFermiFunc->SetParameter(4, 0);
371
372 m_norm = 1. / m_expFermiFunc->GetMaximum();
373 m_timeCorr = m_tau1 * std::log(m_tau2 / m_tau1 - 1.0);
374
375 // Now set up the actual TF1
376 //
377 std::shared_ptr<TF1> theTF1 = ZDCFitWrapper::GetWrapperTF1();
378
379 // BAC, parameter 0 limits now is set in DoInitialize
380 theTF1->SetParLimits(1, tmin, tmax);
381 theTF1->SetParLimits(2, 1, 8196); // Increase the upper range to 2 times of ADC range to deal with large exponential tail case of pre-pulse.
382 theTF1->SetParLimits(3, -20, 10);
383
384 theTF1->SetParName(0, "Amp");
385 theTF1->SetParName(1, "T0");
386 theTF1->SetParName(2, "Amp_{pre}");
387 theTF1->SetParName(3, "T0_{pre}");
388 theTF1->SetParName(4, "C");
389}
double ZDCFermiExpFit(const double *xvec, const double *pvec)
std::shared_ptr< TF1 > m_expFermiFunc
virtual std::shared_ptr< TF1 > GetWrapperTF1()
ZDCPrePulseFitWrapper(std::shared_ptr< TF1 > wrapperTF1)

◆ ~ZDCFitExpFermiPrePulse()

ZDCFitExpFermiPrePulse::~ZDCFitExpFermiPrePulse ( )
inline

Definition at line 445 of file ZDCFitWrapper.h.

445{}

Member Function Documentation

◆ ConstrainFit()

void ZDCFitExpFermiPrePulse::ConstrainFit ( )
overridevirtual

Implements ZDCFitWrapper.

Definition at line 391 of file ZDCFitWrapper.cxx.

392{
393 // We force the constant term and per-pulse amplitude to zero
394 //
395 std::shared_ptr<TF1> theTF1 = GetWrapperTF1();
396
397 theTF1->FixParameter(2, 0);
398 theTF1->FixParameter(4, 0);
399}

◆ DoInitialize()

void ZDCFitExpFermiPrePulse::DoInitialize ( float initialAmp,
float initialT0,
float ampMin,
float ampMax )
overridevirtual

Implements ZDCFitWrapper.

Definition at line 423 of file ZDCFitWrapper.cxx.

424{
425 GetWrapperTF1()->SetParameter(0, initialAmp);
426 GetWrapperTF1()->SetParameter(1, initialT0);
427 GetWrapperTF1()->SetParameter(2, 5);
428 GetWrapperTF1()->SetParLimits(0, ampMin, ampMax);
429
430 // Set parameter errors for fit step size
431 //
432 double ampStep = std::min(0.05*initialAmp, std::abs(ampMax - initialAmp)/2.);
433 GetWrapperTF1()->SetParError(0, ampStep);
434 GetWrapperTF1()->SetParError(1, 1.0);
435 GetWrapperTF1()->SetParError(2, 2);
436 GetWrapperTF1()->SetParError(3, 1.0);
437 GetWrapperTF1()->SetParError(4, 1.0);
438}

◆ GetAmpError()

virtual float ZDCFitExpFermiPrePulse::GetAmpError ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 465 of file ZDCFitWrapper.h.

465{return GetWrapperTF1()->GetParError(0); }

◆ GetAmplitude()

virtual float ZDCFitExpFermiPrePulse::GetAmplitude ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 464 of file ZDCFitWrapper.h.

464{return GetWrapperTF1()->GetParameter(0); }

◆ GetBkgdMaxFraction()

virtual float ZDCFitExpFermiPrePulse::GetBkgdMaxFraction ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 490 of file ZDCFitWrapper.h.

491 {
492 const TF1* theTF1 = ZDCFitWrapper::GetWrapperTF1();
493
494 double maxTime = GetTime();
495
496 double amp = theTF1->GetParameter(0);
497 if (amp <= 0) return -1;
498
499 double preAmp = theTF1->GetParameter(2);
500 double preT0 = theTF1->GetParameter(3);
501
502 double deltaTPre = maxTime - preT0;
503 double background = preAmp * m_norm * m_expFermiFunc->operator()(deltaTPre);
504
505 return background / (amp + background);
506 }
virtual float GetTime() const override

◆ GetExpAmp()

virtual float ZDCFitExpFermiPrePulse::GetExpAmp ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 476 of file ZDCFitWrapper.h.

476{return 0;}

◆ GetMaxAmp()

float ZDCFitWrapper::GetMaxAmp ( ) const
inlineinherited

Definition at line 91 of file ZDCFitWrapper.h.

91{return m_ampMax;}

◆ GetMinAmp()

float ZDCFitWrapper::GetMinAmp ( ) const
inlineinherited

Definition at line 90 of file ZDCFitWrapper.h.

90{return m_ampMin;}

◆ GetNumShapeParameters()

virtual unsigned int ZDCFitExpFermiPrePulse::GetNumShapeParameters ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 482 of file ZDCFitWrapper.h.

482{return 1;}

◆ GetPostAmp()

virtual float ZDCFitExpFermiPrePulse::GetPostAmp ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 474 of file ZDCFitWrapper.h.

474{return 0;}

◆ GetPostT0()

virtual float ZDCFitExpFermiPrePulse::GetPostT0 ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 473 of file ZDCFitWrapper.h.

473{return 0;}

◆ GetPreAmp()

virtual float ZDCFitExpFermiPrePulse::GetPreAmp ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 471 of file ZDCFitWrapper.h.

471{return 0;}

◆ GetPreT0()

virtual float ZDCFitExpFermiPrePulse::GetPreT0 ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 470 of file ZDCFitWrapper.h.

470{return 0;}

◆ GetPreT0ParIndex()

virtual unsigned int ZDCFitExpFermiPrePulse::GetPreT0ParIndex ( ) const
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 462 of file ZDCFitWrapper.h.

462{return 3;}

◆ GetShapeParameter()

virtual float ZDCFitExpFermiPrePulse::GetShapeParameter ( size_t index) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 484 of file ZDCFitWrapper.h.

485 {
486 if (index < 1) return GetWrapperTF1()->GetParameter(4);
487 else throw std::runtime_error("Fit parameter does not exist.");
488 }

◆ GetT0Max()

float ZDCFitWrapper::GetT0Max ( ) const
inlineinherited

Definition at line 101 of file ZDCFitWrapper.h.

101 {
102 if (m_adjTLimitsEvent) return m_tempTmax;
103 else return m_t0Max;
104 }

◆ GetT0Min()

float ZDCFitWrapper::GetT0Min ( ) const
inlineinherited

Definition at line 96 of file ZDCFitWrapper.h.

96 {
97 if (m_adjTLimitsEvent) return m_tempTmin;
98 else return m_t0Min;
99 }

◆ GetTau1()

virtual float ZDCFitExpFermiPrePulse::GetTau1 ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 467 of file ZDCFitWrapper.h.

467{return m_tau1;}

◆ GetTau2()

virtual float ZDCFitExpFermiPrePulse::GetTau2 ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 468 of file ZDCFitWrapper.h.

468{return m_tau2;}

◆ GetTime()

virtual float ZDCFitExpFermiPrePulse::GetTime ( ) const
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 478 of file ZDCFitWrapper.h.

478 {
479 return GetWrapperTF1()->GetParameter(1) + m_timeCorr; // Correct the time to the maximum
480 }

◆ GetTMax()

float ZDCFitWrapper::GetTMax ( ) const
inlineinherited

Definition at line 94 of file ZDCFitWrapper.h.

94{return m_tmax;}

◆ GetTMin()

float ZDCFitWrapper::GetTMin ( ) const
inlineinherited

Definition at line 93 of file ZDCFitWrapper.h.

93{return m_tmin;}

◆ GetTMinAdjust()

float ZDCFitWrapper::GetTMinAdjust ( ) const
inlineinherited

Definition at line 106 of file ZDCFitWrapper.h.

106{return m_tminAdjust;}

◆ GetWrapperTF1() [1/2]

virtual std::shared_ptr< TF1 > ZDCFitWrapper::GetWrapperTF1 ( )
inlinevirtualinherited

Definition at line 115 of file ZDCFitWrapper.h.

115{return m_wrapperTF1;}
std::shared_ptr< TF1 > m_wrapperTF1

◆ GetWrapperTF1() [2/2]

virtual const TF1 * ZDCFitWrapper::GetWrapperTF1 ( ) const
inlinevirtualinherited

Definition at line 116 of file ZDCFitWrapper.h.

116{return m_wrapperTF1.get();}

◆ GetWrapperTF1RawPtr()

virtual TF1 * ZDCFitWrapper::GetWrapperTF1RawPtr ( ) const
inlinevirtualinherited

Definition at line 117 of file ZDCFitWrapper.h.

117{return m_wrapperTF1.get();}

◆ Initialize() [1/2]

void ZDCFitWrapper::Initialize ( float initialAmp,
float initialT0,
float ampMin,
float ampMax )
inherited

Definition at line 9 of file ZDCFitWrapper.cxx.

10{
11 // Clear the errors on the TF1 because retaining the errors seems to affect
12 // the convergence of fits
13 //
14 unsigned int npar = GetWrapperTF1()->GetNpar();
15 std::vector<double> zeroVec(npar, 0.0);
16 GetWrapperTF1()->SetParErrors(&zeroVec[0]);
17
18 // If we adjusted the time range on the previous event, restore to default
19 //
22
23 m_adjTLimitsEvent = false;
24 m_tminAdjust = 0;
25 }
26
27 SetAmpMinMax(ampMin, ampMax);
28
29 DoInitialize(initialAmp, initialT0, ampMin, ampMax);
30}
virtual void SetT0FitLimits(float tMin, float tMax)=0
void SetAmpMinMax(float minAmp, float maxAmp)
virtual void DoInitialize(float initialAmp, float initialT0, float ampMin, float ampMax)=0

◆ Initialize() [2/2]

void ZDCFitWrapper::Initialize ( float initialAmp,
float initialT0,
float ampMin,
float ampMax,
float fitTmin,
float fitTmax,
float fitTRef )
inherited

Definition at line 32 of file ZDCFitWrapper.cxx.

33{
34 // Clear the errors on the TF1 because retaining the errors seems to affect
35 // the convergence of fits
36 //
37 unsigned int npar = GetWrapperTF1()->GetNpar();
38 std::vector<double> zeroVec(npar, 0.0);
39 GetWrapperTF1()->SetParErrors(&zeroVec[0]);
40
41 m_adjTLimitsEvent = true;
42
43 m_tminAdjust = fitTRef; // Note: this is the time corresponding to the sample used for presample subtraction
44
45 m_tempTmin = std::max(m_t0Min, fitTmin);
46 m_tempTmax = std::min(m_t0Max, fitTmax);
47
48 SetAmpMinMax(ampMin, ampMax);
50
51 DoInitialize(initialAmp, initialT0, ampMin, ampMax);
52}

◆ operator()()

virtual double ZDCFitExpFermiPrePulse::operator() ( const double * x,
const double * p )
inlineoverridevirtual

Implements ZDCFitWrapper.

Definition at line 508 of file ZDCFitWrapper.h.

509 {
510 double t = x[0];
511
512 double amp = p[0];
513 double t0 = p[1];
514 double preAmp = p[2];
515 double preT0 = p[3];
516 double C = p[4];
517
518 double deltaT = t - t0;
519 double deltaTPre = t - preT0;
520
521 // We subtract off the value of the pre-pulse at the minimum time (nominally 0,
522 // but can change if we exclude early samples) to account for the subtraction of the pre-sample
523 //
524 double deltaPresamp = GetTMinAdjust() - preT0;
525
526 // double bckgd = linSlope*t;
527
528 double pulse1 = amp*m_norm*m_expFermiFunc->operator()(deltaT);
529 double pulse2 = preAmp * m_norm * (m_expFermiFunc->operator()(deltaTPre) -
530 m_expFermiFunc->operator()(deltaPresamp));
531
532 return C + pulse1 + pulse2;// + bckgd;
533 }
static Double_t t0
#define x
float GetTMinAdjust() const
struct color C

◆ SetAmpMinMax()

void ZDCFitWrapper::SetAmpMinMax ( float minAmp,
float maxAmp )
inlineinherited

Definition at line 67 of file ZDCFitWrapper.h.

68 {
69 m_ampMin = minAmp;
70 m_ampMax = maxAmp;
71 }

◆ SetInitialPrePulse()

virtual void ZDCFitExpFermiPrePulse::SetInitialPrePulse ( float amp,
float t0,
float ,
bool  )
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 451 of file ZDCFitWrapper.h.

451 {
452 GetWrapperTF1()->SetParameter(2, std::max(amp, (float) 1.5)); //1.5 here ensures that we're above lower limit
453 GetWrapperTF1()->SetParameter(3, t0);
454 }

◆ SetPostPulseT0Range()

virtual void ZDCFitExpFermiPrePulse::SetPostPulseT0Range ( float ,
float ,
float  )
inlineoverridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 457 of file ZDCFitWrapper.h.

457{return;}

◆ SetPrePulseT0Range()

void ZDCFitExpFermiPrePulse::SetPrePulseT0Range ( float tmin,
float tmax )
overridevirtual

Implements ZDCPrePulseFitWrapper.

Definition at line 409 of file ZDCFitWrapper.cxx.

410{
411 if (tmin > GetTMin()) {
412 m_preT0Min = tmin;
413 GetWrapperTF1()->ReleaseParameter(3);
414 GetWrapperTF1()->SetParLimits(3, tmin, tmax);
415 }
416 else {
417 m_preT0Min = -25;
418 GetWrapperTF1()->SetParLimits(3, -25, tmax);
419 }
420 m_preT0Max = tmax;
421}
float GetTMin() const

◆ SetT0FitLimits()

void ZDCFitExpFermiPrePulse::SetT0FitLimits ( float tMin,
float tMax )
overridevirtual

Implements ZDCFitWrapper.

Definition at line 440 of file ZDCFitWrapper.cxx.

441{
442 std::shared_ptr<TF1> theTF1 = GetWrapperTF1();
443 theTF1->SetParLimits(1, t0Min, t0Max);
444}

◆ SetT0Range()

void ZDCFitWrapper::SetT0Range ( float t0Min,
float t0Max )
inlineinherited

Definition at line 73 of file ZDCFitWrapper.h.

74 {
75 m_t0Min = t0Min;
76 m_t0Max = t0Max;
77
78 SetT0FitLimits(t0Min, t0Max);
79 }

◆ UnconstrainFit()

void ZDCFitExpFermiPrePulse::UnconstrainFit ( )
overridevirtual

Implements ZDCFitWrapper.

Definition at line 400 of file ZDCFitWrapper.cxx.

401{
402 std::shared_ptr<TF1> theTF1 = GetWrapperTF1();
403 theTF1->ReleaseParameter(2);
404 theTF1->ReleaseParameter(4);
405
406 theTF1->SetParLimits(2, 1, 8196); // Increase the upper range to 2 times of ADC range to deal with large exponential tail case of pre-pulse.
407}

Member Data Documentation

◆ m_adjTLimitsEvent

bool ZDCFitWrapper::m_adjTLimitsEvent {false}
privateinherited

Definition at line 36 of file ZDCFitWrapper.h.

36{false};

◆ m_ampMax

float ZDCFitWrapper::m_ampMax {0}
privateinherited

Definition at line 31 of file ZDCFitWrapper.h.

31{0};

◆ m_ampMin

float ZDCFitWrapper::m_ampMin {0}
privateinherited

Definition at line 30 of file ZDCFitWrapper.h.

30{0};

◆ m_expFermiFunc

std::shared_ptr<TF1> ZDCFitExpFermiPrePulse::m_expFermiFunc = 0
private

Definition at line 440 of file ZDCFitWrapper.h.

◆ m_expFermiPreFunc

std::shared_ptr<TF1> ZDCFitExpFermiPrePulse::m_expFermiPreFunc = 0
private

Definition at line 441 of file ZDCFitWrapper.h.

◆ m_norm

float ZDCFitExpFermiPrePulse::m_norm {0}
private

Definition at line 437 of file ZDCFitWrapper.h.

437{0};

◆ m_preT0Max

float ZDCPrePulseFitWrapper::m_preT0Max
protectedinherited

Definition at line 124 of file ZDCFitWrapper.h.

◆ m_preT0Min

float ZDCPrePulseFitWrapper::m_preT0Min
protectedinherited

Definition at line 123 of file ZDCFitWrapper.h.

◆ m_t0Max

float ZDCFitWrapper::m_t0Max {0}
privateinherited

Definition at line 34 of file ZDCFitWrapper.h.

34{0};

◆ m_t0Min

float ZDCFitWrapper::m_t0Min {0}
privateinherited

Definition at line 33 of file ZDCFitWrapper.h.

33{0};

◆ m_tau1

float ZDCFitExpFermiPrePulse::m_tau1 {0}
private

Definition at line 435 of file ZDCFitWrapper.h.

435{0};

◆ m_tau2

float ZDCFitExpFermiPrePulse::m_tau2 {0}
private

Definition at line 436 of file ZDCFitWrapper.h.

436{0};

◆ m_tempTmax

float ZDCFitWrapper::m_tempTmax {0}
privateinherited

Definition at line 39 of file ZDCFitWrapper.h.

39{0};

◆ m_tempTmin

float ZDCFitWrapper::m_tempTmin {0}
privateinherited

Definition at line 38 of file ZDCFitWrapper.h.

38{0};

◆ m_timeCorr

float ZDCFitExpFermiPrePulse::m_timeCorr {0}
private

Definition at line 438 of file ZDCFitWrapper.h.

438{0};

◆ m_tmax

float ZDCFitWrapper::m_tmax {0}
privateinherited

Definition at line 28 of file ZDCFitWrapper.h.

28{0};

◆ m_tmin

float ZDCFitWrapper::m_tmin {0}
privateinherited

Definition at line 27 of file ZDCFitWrapper.h.

27{0};

◆ m_tminAdjust

float ZDCFitWrapper::m_tminAdjust {0}
privateinherited

Definition at line 37 of file ZDCFitWrapper.h.

37{0};

◆ m_wrapperTF1

std::shared_ptr<TF1> ZDCFitWrapper::m_wrapperTF1 {}
privateinherited

Definition at line 25 of file ZDCFitWrapper.h.

25{};

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