[u/mrichter/AliRoot.git] / PHOS / AliPHOSPulseGenerator.cxx

/**************************************************************************
 * Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved.      *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

// The class which simulates the pulse shape from the PHOS FEE shaper,
// make sampled amplitudes, digitize them.
// Use case:
//   AliPHOSPulseGenerator *pulse = new AliPHOSPulseGenerator(energy,time);
//   Int_t *adcHG = new Int_t[pulse->GetRawFormatTimeBins()];
//   Int_t *adcLG= new Int_t[pulse->GetRawFormatTimeBins()];
//   pulse->AddNoise(1.);
//   pulse->MakeSamples();
//   pulse->GetSamples(adcHG, adcHG) ; 
//   pulse->Print();
//   pulse->Draw();
//
// Author: Yuri Kharlov, after Yves Schutz and Per Thomas Hille

// --- ROOT system ---
#include "TMath.h" 
#include "TF1.h" 
#include "TGraph.h" 
#include "TCanvas.h" 
#include "TRandom.h"

// --- AliRoot header files ---
#include "AliLog.h"
#include "AliPHOSPulseGenerator.h"

// --- Standard library ---
#include <cmath>
#include <iostream>

using std::cout;
using std::endl; 

ClassImp(AliPHOSPulseGenerator) 

Double_t AliPHOSPulseGenerator::fgCapa        = 1.1;       // 1pF 
Int_t    AliPHOSPulseGenerator::fgOrder       = 2 ;        // order of the Gamma function
Double_t AliPHOSPulseGenerator::fgTimePeak    = 2.1E-6 ;   // tau=2.1 micro seconds
Double_t AliPHOSPulseGenerator::fgTimeTrigger = 100E-9 ;   // one tick 100 ns
Double_t AliPHOSPulseGenerator::fgHighCharge  = 8.8;       // adjusted for a high gain range of 5 GeV (10 bits)
Double_t AliPHOSPulseGenerator::fgHighGain    = 6.85;
Double_t AliPHOSPulseGenerator::fgHighLowGainFactor = 16.; // adjusted for a low gain range of 80 GeV (10 bits) 

//-----------------------------------------------------------------------------
AliPHOSPulseGenerator::AliPHOSPulseGenerator(Double_t a, Double_t t0)
  : TObject(), fAmplitude(a), fTZero(t0), fDataHG(0), fDataLG(0), fDigitize(kTRUE)
{
  // Contruct a pulsegenrator object and initializes all necessary parameters
  // @param a digit amplitude in GeV
  // @param t0 time delay in nanoseconds of signal relative the first sample. 
  // This value should be between 0 and Ts, where Ts is the sample interval

  fDataHG = new Double_t[fkTimeBins];
  fDataLG = new Double_t[fkTimeBins];
  Reset();
}

//-----------------------------------------------------------------------------
AliPHOSPulseGenerator::AliPHOSPulseGenerator(const AliPHOSPulseGenerator & pulse)
  : TObject(), fAmplitude(pulse.fAmplitude), fTZero(pulse.fTZero), fDataHG(0), fDataLG(0), fDigitize(kTRUE)
{
  fDataHG = new Double_t[pulse.fkTimeBins];
  fDataLG = new Double_t[pulse.fkTimeBins];
  for (Int_t i=0; i<pulse.fkTimeBins; i++) {
    fDataHG[i] = pulse.fDataHG[i];
    fDataLG[i] = pulse.fDataHG[i];
  }
}

//-----------------------------------------------------------------------------
AliPHOSPulseGenerator::~AliPHOSPulseGenerator()
{
  // Destructor: delete arrays of samples

  delete [] fDataHG;
  fDataHG=0;
  delete [] fDataLG;
  fDataLG=0;
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::Reset()
{
  // Reset all sample amplitudes to 0

  for (Int_t i=0; i<fkTimeBins; i++) {
    fDataHG[i] = 0.;
    fDataLG[i] = 0.;
  }
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::AddBaseline(Double_t baselineLevel)
{
  // Adds a baseline offset to the signal
  // @param baselineLevel The basline level to add
  for (Int_t i=0; i<fkTimeBins; i++) {
    fDataHG[i] += baselineLevel;
    fDataLG[i] += baselineLevel;
  }
  // Digitize floating point amplitudes to integers
  if (fDigitize) Digitize();
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::AddNoise(Double_t sigma)
{
  // Adds Gaussian uncorrelated to the sample array
  // @param sigma the noise amplitude in entities of ADC levels  
  
  for (Int_t i=0; i<fkTimeBins; i++) {
    fDataHG[i] = gRandom->Gaus(0., sigma) ; 
    fDataLG[i] = gRandom->Gaus(0., sigma) ; 
  }
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::AddNoise(Double_t * /* sigma */, Double_t /* cutoff */)
{
  //Adds correlated Gaussian noise with cutof frequency "cutoff"
  // @param sigma noise amplitude in entities of ADC levels
  // @param -30DB cutoff frequency of the noise in entities of sampling frequency

  AliError("not implemented yet");
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::AddPretriggerSamples(Int_t nPresamples)
{
  // Adds pretrigger samples to the sample arrays and replace them
  // with concatinated and truncated arrays

  Double_t *tmpDataHG = new Double_t[fkTimeBins];
  Double_t *tmpDataLG = new Double_t[fkTimeBins];
  Int_t i;
  for (i=0; i<fkTimeBins; i++) {
    tmpDataHG[i] = fDataHG[i];
    tmpDataLG[i] = fDataLG[i];
  }
  for (i=0; i<fkTimeBins; i++) {
    if (i<nPresamples) {
      fDataHG[i] = 0.;
      fDataLG[i] = 0.;
    }
    else {
      fDataHG[i] = tmpDataHG[i-nPresamples];
      fDataLG[i] = tmpDataLG[i-nPresamples];
    }
  }
  delete [] tmpDataHG;
  delete [] tmpDataLG;
}

//-----------------------------------------------------------------------------
void AliPHOSPulseGenerator::Digitize()
{
  // Emulates ADC: rounds down to nearest integer value all amplitudes
  for (Int_t i=0; i<fkTimeBins; i++) {
    fDataHG[i] = (Double_t) ((Int_t)(fDataHG[i] + 0.5));
    fDataLG[i] = (Double_t) ((Int_t)(fDataLG[i] + 0.5));
  }
}

//-----------------------------------------------------------------------------
Double_t AliPHOSPulseGenerator::RawResponseFunction(Double_t *x, Double_t *par) 
{
  // Shape of the electronics raw reponse:
  // It is a semi-gaussian, 2nd order Gamma function of the general form
  // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with 
  // tp : peaking time par[0]
  // n  : order of the function
  // C  : integrating capacitor in the preamplifier
  // A  : open loop gain of the preamplifier
  // Q  : the total APD charge to be measured Q = C * energy
  
  Double_t signal ;
  Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ; 

  if (xx < 0 || xx > GetRawFormatTimeMax()) 
    signal = 0. ;  
  else {
    Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder)/fgCapa ; 
    signal = fac * par[2] * TMath::Power(xx/fgTimePeak, fgOrder) * TMath::Exp(-fgOrder*(xx/fgTimePeak)) ;
  }
  return signal ;  
}

//__________________________________________________________________
Double_t AliPHOSPulseGenerator::RawResponseFunctionMax(Double_t charge, Double_t gain) 
{
  // Maximum value of the shaper response function
  return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder) 
	   / ( fgCapa * TMath::Exp(fgOrder) ) );  
}

//__________________________________________________________________
Bool_t AliPHOSPulseGenerator::MakeSamples()
{
  // for a start time fTZero and an amplitude fAmplitude given by digit, 
  // calculates the raw sampled response AliPHOSPulseGenerator::RawResponseFunction

  const Int_t kRawSignalOverflow = 0x3FF ; // decimal 1023
  Bool_t lowGain = kFALSE ; 

  TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);

  for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
    signalF.SetParameter(0, fgHighCharge) ; 
    signalF.SetParameter(1, fgHighGain) ; 
    signalF.SetParameter(2, fAmplitude) ; 
    signalF.SetParameter(3, fTZero) ; 
    Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
    Double_t signal = signalF.Eval(time) ;     
    fDataHG[iTime] += signal;
    if ( static_cast<Int_t>(fDataHG[iTime]+0.5) > kRawSignalOverflow ){  // larger than 10 bits 
      fDataHG[iTime] = kRawSignalOverflow ;
      lowGain = kTRUE ; 
    }

    signalF.SetParameter(0, GetRawFormatLowCharge() ) ;     
    signalF.SetParameter(1, GetRawFormatLowGain() ) ; 
    signal = signalF.Eval(time) ;  
    fDataLG[iTime] += signal;
    if ( static_cast<Int_t>(fDataLG[iTime]+0.5) > kRawSignalOverflow)  // larger than 10 bits 
      fDataLG[iTime] = kRawSignalOverflow ;

  }
  // Digitize floating point amplitudes to integers
  if (fDigitize) Digitize();
  return lowGain ; 
}

//__________________________________________________________________
void AliPHOSPulseGenerator::GetSamples(Int_t *adcHG, Int_t *adcLG) const
{
  // Return integer sample arrays adcHG and adcLG
  for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
    adcHG[iTime] = static_cast<Int_t>(fDataHG[iTime]) ;
    adcLG[iTime] = static_cast<Int_t>(fDataLG[iTime]) ;
  }
}

//__________________________________________________________________
void AliPHOSPulseGenerator::Print(Option_t*) const
{
  // Prints sampled amplitudes to stdout
  Int_t i;
  cout << "High gain: ";
  for (i=0; i<fkTimeBins; i++)
    cout << (Int_t)fDataHG[i] << " ";
  cout << endl;

  cout << "Low  gain: ";
  for (i=0; i<fkTimeBins; i++)
    cout << (Int_t)fDataLG[i] << " ";
  cout << endl;
}

//__________________________________________________________________
void AliPHOSPulseGenerator::Draw(Option_t*)
{
  // Draw graphs with high and low gain samples

  Double_t *time = new Double_t[fkTimeBins];
  for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
    time[iTime] = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
  }
  Int_t nPoints = fkTimeBins;
  TGraph *graphHG = new TGraph(nPoints,time,fDataHG);
  TGraph *graphLG = new TGraph(nPoints,time,fDataLG);
  graphHG->SetMarkerStyle(20);
  graphLG->SetMarkerStyle(20);
  graphHG->SetMarkerSize(0.4);
  graphLG->SetMarkerSize(0.4);
  graphHG->SetTitle("High gain samples");
  graphLG->SetTitle("Low gain samples");

  TCanvas *c1 = new TCanvas("c1","Raw ALTRO samples",10,10,700,500);
  c1->SetFillColor(0);
  c1->Divide(2,1);
  c1->cd(1);
  gPad->SetLeftMargin(0.15);
  graphHG->Draw("AP");
  graphHG->GetHistogram()->SetTitleOffset(1.6,"Y");
  graphHG->GetHistogram()->SetXTitle("time, #musec");
  graphHG->GetHistogram()->SetYTitle("Amplitude, ADC counts");
  c1->cd(2);
  gPad->SetLeftMargin(0.15);
  graphLG->Draw("AP");
  graphLG->GetHistogram()->SetTitleOffset(1.6,"Y");
  graphLG->GetHistogram()->SetXTitle("time, #musec");
  graphLG->GetHistogram()->SetYTitle("Amplitude, ADC counts");
  c1->Update();
}
Commit	Line	Data
431a9211	1	/**************************************************************************
	2	* Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	// The class which simulates the pulse shape from the PHOS FEE shaper,
	19	// make sampled amplitudes, digitize them.
	20	// Use case:
	21	// AliPHOSPulseGenerator *pulse = new AliPHOSPulseGenerator(energy,time);
	22	// Int_t *adcHG = new Int_t[pulse->GetRawFormatTimeBins()];
	23	// Int_t *adcLG= new Int_t[pulse->GetRawFormatTimeBins()];
2111ab30	24	// pulse->AddNoise(1.);
431a9211	25	// pulse->MakeSamples();
	26	// pulse->GetSamples(adcHG, adcHG) ;
	27	// pulse->Print();
	28	// pulse->Draw();
	29	//
	30	// Author: Yuri Kharlov, after Yves Schutz and Per Thomas Hille
	31
	32	// --- ROOT system ---
	33	#include "TMath.h"
	34	#include "TF1.h"
	35	#include "TGraph.h"
	36	#include "TCanvas.h"
2111ab30	37	#include "TRandom.h"
431a9211	38
	39	// --- AliRoot header files ---
	40	#include "AliLog.h"
	41	#include "AliPHOSPulseGenerator.h"
	42
	43	// --- Standard library ---
	44	#include <cmath>
	45	#include <iostream>
	46
	47	using std::cout;
	48	using std::endl;
	49
	50	ClassImp(AliPHOSPulseGenerator)
	51
ff857cdc	52	Double_t AliPHOSPulseGenerator::fgCapa = 1.1; // 1pF
431a9211	53	Int_t AliPHOSPulseGenerator::fgOrder = 2 ; // order of the Gamma function
ff857cdc	54	Double_t AliPHOSPulseGenerator::fgTimePeak = 2.1E-6 ; // tau=2.1 micro seconds
	55	Double_t AliPHOSPulseGenerator::fgTimeTrigger = 100E-9 ; // one tick 100 ns
	56	Double_t AliPHOSPulseGenerator::fgHighCharge = 8.8; // adjusted for a high gain range of 5 GeV (10 bits)
	57	Double_t AliPHOSPulseGenerator::fgHighGain = 6.85;
	58	Double_t AliPHOSPulseGenerator::fgHighLowGainFactor = 16.; // adjusted for a low gain range of 80 GeV (10 bits)
431a9211	59
	60	//-----------------------------------------------------------------------------
	61	AliPHOSPulseGenerator::AliPHOSPulseGenerator(Double_t a, Double_t t0)
	62	: TObject(), fAmplitude(a), fTZero(t0), fDataHG(0), fDataLG(0), fDigitize(kTRUE)
	63	{
	64	// Contruct a pulsegenrator object and initializes all necessary parameters
	65	// @param a digit amplitude in GeV
	66	// @param t0 time delay in nanoseconds of signal relative the first sample.
	67	// This value should be between 0 and Ts, where Ts is the sample interval
	68
	69	fDataHG = new Double_t[fkTimeBins];
	70	fDataLG = new Double_t[fkTimeBins];
2111ab30	71	Reset();
431a9211	72	}
	73
	74	//-----------------------------------------------------------------------------
	75	AliPHOSPulseGenerator::AliPHOSPulseGenerator(const AliPHOSPulseGenerator & pulse)
	76	: TObject(), fAmplitude(pulse.fAmplitude), fTZero(pulse.fTZero), fDataHG(0), fDataLG(0), fDigitize(kTRUE)
	77	{
	78	fDataHG = new Double_t[pulse.fkTimeBins];
	79	fDataLG = new Double_t[pulse.fkTimeBins];
	80	for (Int_t i=0; i<pulse.fkTimeBins; i++) {
	81	fDataHG[i] = pulse.fDataHG[i];
	82	fDataLG[i] = pulse.fDataHG[i];
	83	}
	84	}
	85
	86	//-----------------------------------------------------------------------------
	87	AliPHOSPulseGenerator::~AliPHOSPulseGenerator()
	88	{
	89	// Destructor: delete arrays of samples
	90
	91	delete [] fDataHG;
	92	fDataHG=0;
	93	delete [] fDataLG;
	94	fDataLG=0;
	95	}
	96
2111ab30	97	//-----------------------------------------------------------------------------
	98	void AliPHOSPulseGenerator::Reset()
	99	{
	100	// Reset all sample amplitudes to 0
	101
	102	for (Int_t i=0; i<fkTimeBins; i++) {
	103	fDataHG[i] = 0.;
	104	fDataLG[i] = 0.;
	105	}
	106	}
	107
431a9211	108	//-----------------------------------------------------------------------------
	109	void AliPHOSPulseGenerator::AddBaseline(Double_t baselineLevel)
	110	{
	111	// Adds a baseline offset to the signal
	112	// @param baselineLevel The basline level to add
	113	for (Int_t i=0; i<fkTimeBins; i++) {
	114	fDataHG[i] += baselineLevel;
	115	fDataLG[i] += baselineLevel;
	116	}
2111ab30	117	// Digitize floating point amplitudes to integers
2111ab30	118	if (fDigitize) Digitize();
431a9211	119	}
	120
	121	//-----------------------------------------------------------------------------
2111ab30	122	void AliPHOSPulseGenerator::AddNoise(Double_t sigma)
431a9211	123	{
2111ab30	124	// Adds Gaussian uncorrelated to the sample array
431a9211	125	// @param sigma the noise amplitude in entities of ADC levels
431a9211	126
2111ab30	127	for (Int_t i=0; i<fkTimeBins; i++) {
	128	fDataHG[i] = gRandom->Gaus(0., sigma) ;
	129	fDataLG[i] = gRandom->Gaus(0., sigma) ;
	130	}
431a9211	131	}
431a9211	132
431a9211	133	//-----------------------------------------------------------------------------
	134	void AliPHOSPulseGenerator::AddNoise(Double_t * /* sigma /, Double_t / cutoff */)
	135	{
	136	//Adds correlated Gaussian noise with cutof frequency "cutoff"
	137	// @param sigma noise amplitude in entities of ADC levels
	138	// @param -30DB cutoff frequency of the noise in entities of sampling frequency
	139
	140	AliError("not implemented yet");
	141	}
	142
	143	//-----------------------------------------------------------------------------
	144	void AliPHOSPulseGenerator::AddPretriggerSamples(Int_t nPresamples)
	145	{
	146	// Adds pretrigger samples to the sample arrays and replace them
	147	// with concatinated and truncated arrays
	148
	149	Double_t *tmpDataHG = new Double_t[fkTimeBins];
	150	Double_t *tmpDataLG = new Double_t[fkTimeBins];
	151	Int_t i;
	152	for (i=0; i<fkTimeBins; i++) {
	153	tmpDataHG[i] = fDataHG[i];
	154	tmpDataLG[i] = fDataLG[i];
	155	}
	156	for (i=0; i<fkTimeBins; i++) {
	157	if (i<nPresamples) {
2111ab30	158	fDataHG[i] = 0.;
2111ab30	159	fDataLG[i] = 0.;
431a9211	160	}
431a9211	161	else {
2111ab30	162	fDataHG[i] = tmpDataHG[i-nPresamples];
2111ab30	163	fDataLG[i] = tmpDataLG[i-nPresamples];
431a9211	164	}
	165	}
	166	delete [] tmpDataHG;
	167	delete [] tmpDataLG;
	168	}
	169
	170	//-----------------------------------------------------------------------------
	171	void AliPHOSPulseGenerator::Digitize()
	172	{
	173	// Emulates ADC: rounds down to nearest integer value all amplitudes
	174	for (Int_t i=0; i<fkTimeBins; i++) {
	175	fDataHG[i] = (Double_t) ((Int_t)(fDataHG[i] + 0.5));
	176	fDataLG[i] = (Double_t) ((Int_t)(fDataLG[i] + 0.5));
	177	}
	178	}
	179
	180	//-----------------------------------------------------------------------------
	181	Double_t AliPHOSPulseGenerator::RawResponseFunction(Double_t x, Double_t par)
	182	{
	183	// Shape of the electronics raw reponse:
	184	// It is a semi-gaussian, 2nd order Gamma function of the general form
	185	// v(t) = n*n Q * A*n / C (t/tp)*n exp(-n * t/tp) with
	186	// tp : peaking time par[0]
	187	// n : order of the function
	188	// C : integrating capacitor in the preamplifier
	189	// A : open loop gain of the preamplifier
	190	// Q : the total APD charge to be measured Q = C * energy
	191
	192	Double_t signal ;
	193	Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
	194
ff857cdc	195	if (xx < 0 \|\| xx > GetRawFormatTimeMax())
431a9211	196	signal = 0. ;
	197	else {
	198	Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder)/fgCapa ;
	199	signal = fac * par[2] * TMath::Power(xx/fgTimePeak, fgOrder) * TMath::Exp(-fgOrder*(xx/fgTimePeak)) ;
	200	}
	201	return signal ;
	202	}
	203
	204	//__________________________________________________________________
	205	Double_t AliPHOSPulseGenerator::RawResponseFunctionMax(Double_t charge, Double_t gain)
	206	{
	207	// Maximum value of the shaper response function
	208	return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
	209	/ ( fgCapa * TMath::Exp(fgOrder) ) );
	210	}
	211
	212	//__________________________________________________________________
	213	Bool_t AliPHOSPulseGenerator::MakeSamples()
	214	{
	215	// for a start time fTZero and an amplitude fAmplitude given by digit,
	216	// calculates the raw sampled response AliPHOSPulseGenerator::RawResponseFunction
	217
2111ab30	218	const Int_t kRawSignalOverflow = 0x3FF ; // decimal 1023
431a9211	219	Bool_t lowGain = kFALSE ;
	220
	221	TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
	222
	223	for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
	224	signalF.SetParameter(0, fgHighCharge) ;
	225	signalF.SetParameter(1, fgHighGain) ;
	226	signalF.SetParameter(2, fAmplitude) ;
	227	signalF.SetParameter(3, fTZero) ;
	228	Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
	229	Double_t signal = signalF.Eval(time) ;
2111ab30	230	fDataHG[iTime] += signal;
	231	if ( static_cast<Int_t>(fDataHG[iTime]+0.5) > kRawSignalOverflow ){ // larger than 10 bits
	232	fDataHG[iTime] = kRawSignalOverflow ;
431a9211	233	lowGain = kTRUE ;
431a9211	234	}
431a9211	235
	236	signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
	237	signalF.SetParameter(1, GetRawFormatLowGain() ) ;
	238	signal = signalF.Eval(time) ;
2111ab30	239	fDataLG[iTime] += signal;
	240	if ( static_cast<Int_t>(fDataLG[iTime]+0.5) > kRawSignalOverflow) // larger than 10 bits
	241	fDataLG[iTime] = kRawSignalOverflow ;
431a9211	242
431a9211	243	}
2111ab30	244	// Digitize floating point amplitudes to integers
2111ab30	245	if (fDigitize) Digitize();
431a9211	246	return lowGain ;
	247	}
	248
	249	//__________________________________________________________________
	250	void AliPHOSPulseGenerator::GetSamples(Int_t adcHG, Int_t adcLG) const
	251	{
	252	// Return integer sample arrays adcHG and adcLG
	253	for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
	254	adcHG[iTime] = static_cast<Int_t>(fDataHG[iTime]) ;
	255	adcLG[iTime] = static_cast<Int_t>(fDataLG[iTime]) ;
	256	}
	257	}
	258
	259	//__________________________________________________________________
	260	void AliPHOSPulseGenerator::Print(Option_t*) const
	261	{
	262	// Prints sampled amplitudes to stdout
	263	Int_t i;
	264	cout << "High gain: ";
	265	for (i=0; i<fkTimeBins; i++)
	266	cout << (Int_t)fDataHG[i] << " ";
	267	cout << endl;
	268
	269	cout << "Low gain: ";
	270	for (i=0; i<fkTimeBins; i++)
	271	cout << (Int_t)fDataLG[i] << " ";
	272	cout << endl;
	273	}
	274
	275	//__________________________________________________________________
	276	void AliPHOSPulseGenerator::Draw(Option_t*)
	277	{
	278	// Draw graphs with high and low gain samples
	279
	280	Double_t *time = new Double_t[fkTimeBins];
	281	for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
	282	time[iTime] = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
	283	}
	284	Int_t nPoints = fkTimeBins;
	285	TGraph *graphHG = new TGraph(nPoints,time,fDataHG);
	286	TGraph *graphLG = new TGraph(nPoints,time,fDataLG);
	287	graphHG->SetMarkerStyle(20);
2111ab30	288	graphLG->SetMarkerStyle(20);
	289	graphHG->SetMarkerSize(0.4);
	290	graphLG->SetMarkerSize(0.4);
431a9211	291	graphHG->SetTitle("High gain samples");
	292	graphLG->SetTitle("Low gain samples");
	293
	294	TCanvas *c1 = new TCanvas("c1","Raw ALTRO samples",10,10,700,500);
2111ab30	295	c1->SetFillColor(0);
431a9211	296	c1->Divide(2,1);
	297	c1->cd(1);
	298	gPad->SetLeftMargin(0.15);
	299	graphHG->Draw("AP");
	300	graphHG->GetHistogram()->SetTitleOffset(1.6,"Y");
	301	graphHG->GetHistogram()->SetXTitle("time, #musec");
	302	graphHG->GetHistogram()->SetYTitle("Amplitude, ADC counts");
	303	c1->cd(2);
	304	gPad->SetLeftMargin(0.15);
	305	graphLG->Draw("AP");
	306	graphLG->GetHistogram()->SetTitleOffset(1.6,"Y");
	307	graphLG->GetHistogram()->SetXTitle("time, #musec");
	308	graphLG->GetHistogram()->SetYTitle("Amplitude, ADC counts");
	309	c1->Update();
	310	}