[u/mrichter/AliRoot.git] / TRD / AliTRDSimParam.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/

/* $Id$ */

////////////////////////////////////////////////////////////////////////////
//                                                                        //
// Class containing constant simulation parameters                        //
//                                                                        //
// Request an instance with AliTRDSimParam::Instance()                    //
// Then request the needed values                                         //
//                                                                        //
////////////////////////////////////////////////////////////////////////////

#include <TMath.h>

#include "AliRun.h"

#include "AliTRDSimParam.h"

ClassImp(AliTRDSimParam)

AliTRDSimParam *AliTRDSimParam::fgInstance   = 0;
Bool_t          AliTRDSimParam::fgTerminated = kFALSE;

//_ singleton implementation __________________________________________________
AliTRDSimParam* AliTRDSimParam::Instance()
{
  //
  // Singleton implementation
  // Returns an instance of this class, it is created if neccessary
  // 
  
  if (fgTerminated != kFALSE) {
    return 0;
  }

  if (fgInstance == 0) {
    fgInstance = new AliTRDSimParam();
  }  

  return fgInstance;

}

//_ singleton implementation __________________________________________________
void AliTRDSimParam::Terminate()
{
  //
  // Singleton implementation
  // Deletes the instance of this class and sets the terminated flag,
  // instances cannot be requested anymore
  // This function can be called several times.
  //
  
  fgTerminated = kTRUE;
  
  if (fgInstance != 0) {
    delete fgInstance;
    fgInstance = 0;
  }

}

//_____________________________________________________________________________
AliTRDSimParam::AliTRDSimParam()
  :TObject()
  ,fGasGain(0.0)
  ,fNoise(0.0)
  ,fChipGain(0.0)
  ,fADCoutRange(0.0)
  ,fADCinRange(0.0)
  ,fADCbaseline(0)
  ,fDiffusionOn(kFALSE)
  ,fElAttachOn(kFALSE)
  ,fElAttachProp(0.0)
  ,fTRFOn(kFALSE)
  ,fTRFsmp(0)
  ,fTRFbin(0)
  ,fTRFlo(0.0)
  ,fTRFhi(0.0)
  ,fTRFwid(0.0)
  ,fCTOn(kFALSE)
  ,fCTsmp(0)
  ,fAnodeWireOffset(0.0)
  ,fPadCoupling(0.0)
  ,fTimeCoupling(0.0)
  ,fTimeStructOn(kFALSE)
  ,fPRFOn(kFALSE)
{
  //
  // Default constructor
  //
  
  Init();

}

//_____________________________________________________________________________
void AliTRDSimParam::Init()
{
  // 
  // Default initializiation
  //
  
  // The default parameter for the digitization
  fGasGain           = 4000.0;
  fChipGain          =   12.4;
  fNoise             = 1250.0;
  fADCoutRange       = 1023.0;          // 10-bit ADC
  fADCinRange        = 2000.0;          // 2V input range
  // Go back to 0 again, just to be consistent with reconstruction
  fADCbaseline       =      0;
  //fADCbaseline       =   10;

  // Diffusion on
  fDiffusionOn       = kTRUE;
  
  // Propability for electron attachment
  fElAttachOn        = kFALSE;
  fElAttachProp      = 0.0;

  // The time response function
  fTRFOn             = kTRUE;

  // The cross talk
  fCTOn              = kTRUE;

  // The pad coupling factor
  // Use 0.46, instead of the theroetical value 0.3, since it reproduces better 
  // the test beam data, even tough it is not understood why.
  fPadCoupling       = 0.46;

  // The time coupling factor (same number as for the TPC)
  fTimeCoupling      = 0.4;

  // Distance of first Anode wire from first pad edge
  fAnodeWireOffset   = 0.25;

  // Use drift time maps
  fTimeStructOn      = kTRUE;
  
  // The pad response function
  fPRFOn             = kTRUE;

  ReInit();

}

//_____________________________________________________________________________
AliTRDSimParam::~AliTRDSimParam() 
{
  //
  // Destructor
  //
  
  if (fTRFsmp) {
    delete [] fTRFsmp;
    fTRFsmp = 0;
  }

  if (fCTsmp) {
    delete [] fCTsmp;
    fCTsmp  = 0;
  }

}

//_____________________________________________________________________________
AliTRDSimParam::AliTRDSimParam(const AliTRDSimParam &p)
  :TObject(p)
  ,fGasGain(p.fGasGain)
  ,fNoise(p.fNoise)
  ,fChipGain(p.fChipGain)
  ,fADCoutRange(p.fADCoutRange)
  ,fADCinRange(p.fADCinRange)
  ,fADCbaseline(p.fADCbaseline)
  ,fDiffusionOn(p.fDiffusionOn)
  ,fElAttachOn(p.fElAttachOn)
  ,fElAttachProp(p.fElAttachProp)
  ,fTRFOn(p.fTRFOn)
  ,fTRFsmp(0)
  ,fTRFbin(p.fTRFbin)
  ,fTRFlo(p.fTRFlo)
  ,fTRFhi(p.fTRFhi)
  ,fTRFwid(p.fTRFwid)
  ,fCTOn(p.fCTOn)
  ,fCTsmp(0)
  ,fAnodeWireOffset(p.fAnodeWireOffset)
  ,fPadCoupling(p.fPadCoupling)
  ,fTimeCoupling(p.fTimeCoupling)
  ,fTimeStructOn(p.fTimeStructOn)
  ,fPRFOn(p.fPRFOn)
{
  //
  // Copy constructor
  //

  Int_t iBin = 0;

  if (((AliTRDSimParam &) p).fTRFsmp) {
    delete [] ((AliTRDSimParam &) p).fTRFsmp;
  }
  ((AliTRDSimParam &) p).fTRFsmp = new Float_t[fTRFbin];
  for (iBin = 0; iBin < fTRFbin; iBin++) {
    ((AliTRDSimParam &) p).fTRFsmp[iBin] = fTRFsmp[iBin];
  }                                                                             

  if (((AliTRDSimParam &) p).fCTsmp) {
    delete [] ((AliTRDSimParam &) p).fCTsmp;
  }
  ((AliTRDSimParam &) p).fCTsmp  = new Float_t[fTRFbin];
  for (iBin = 0; iBin < fTRFbin; iBin++) {
    ((AliTRDSimParam &) p).fCTsmp[iBin] = fCTsmp[iBin];
  }                                                                             

}

//_____________________________________________________________________________
AliTRDSimParam &AliTRDSimParam::operator=(const AliTRDSimParam &p)
{
  //
  // Assignment operator
  //

  if (this != &p) {
    ((AliTRDSimParam &) p).Copy(*this);
  }

  return *this;

}

//_____________________________________________________________________________
void AliTRDSimParam::Copy(TObject &p) const
{
  //
  // Copy function
  //
  
  AliTRDSimParam *target = dynamic_cast<AliTRDSimParam *> (&p);
  if (!target) {
    return;
  }

  target->fGasGain            = fGasGain;
  target->fNoise              = fNoise;
  target->fChipGain           = fChipGain;  
  target->fADCoutRange        = fADCoutRange;
  target->fADCinRange         = fADCinRange;
  target->fADCbaseline        = fADCbaseline; 
  target->fDiffusionOn        = fDiffusionOn; 
  target->fElAttachOn         = fElAttachOn;
  target->fElAttachProp       = fElAttachProp;
  target->fTRFOn              = fTRFOn;
  target->fTRFbin             = fTRFbin;
  target->fTRFlo              = fTRFlo;
  target->fTRFhi              = fTRFhi;
  target->fTRFwid             = fTRFwid;
  target->fCTOn               = fCTOn;
  target->fAnodeWireOffset    = fAnodeWireOffset;
  target->fPadCoupling        = fPadCoupling;
  target->fTimeCoupling       = fTimeCoupling;
  target->fPRFOn              = fPRFOn;

  if (target->fTRFsmp) {
    delete[] target->fTRFsmp;
  }
  target->fTRFsmp = new Float_t[fTRFbin];
  for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
    target->fTRFsmp[iBin] = fTRFsmp[iBin];
  }

  if (target->fCTsmp) {
    delete[] target->fCTsmp;
  }
  target->fCTsmp  = new Float_t[fTRFbin];
  for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
    target->fCTsmp[iBin]  = fCTsmp[iBin];
  }
  
}

//_____________________________________________________________________________
void AliTRDSimParam::ReInit()
{
  //
  // Reinitializes the parameter class after a change
  //

  // The range and the binwidth for the sampled TRF 
  fTRFbin = 200;
  // Start 0.2 mus before the signal
  fTRFlo  = -0.4;
  // End the maximum drift time after the signal 
  fTRFhi  =  3.58;
  fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);

  // Create the sampled TRF
  SampleTRF();

}

//_____________________________________________________________________________
void AliTRDSimParam::SampleTRF()
{
  //
  // Samples the new time response function.
  // From Antons measurements with Fe55 source, adjusted by C. Lippmann.
  // time bins are -0.4, -0.38, -0.36, ...., 3.54, 3.56, 3.58 microseconds
  //

  const Int_t kNpasa     = 200;  // kNpasa should be equal to fTRFbin!

  Float_t signal[kNpasa]={ 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000
			 , 0.0002, 0.0007, 0.0026, 0.0089, 0.0253, 0.0612, 0.1319
			 , 0.2416, 0.3913, 0.5609, 0.7295, 0.8662, 0.9581, 1.0000
			 , 0.9990, 0.9611, 0.8995, 0.8269, 0.7495, 0.6714, 0.5987
			 , 0.5334, 0.4756, 0.4249, 0.3811, 0.3433, 0.3110, 0.2837
			 , 0.2607, 0.2409, 0.2243, 0.2099, 0.1974, 0.1868, 0.1776
			 , 0.1695, 0.1627, 0.1566, 0.1509, 0.1457, 0.1407, 0.1362
			 , 0.1317, 0.1274, 0.1233, 0.1196, 0.1162, 0.1131, 0.1102
			 , 0.1075, 0.1051, 0.1026, 0.1004, 0.0979, 0.0956, 0.0934
			 , 0.0912, 0.0892, 0.0875, 0.0858, 0.0843, 0.0829, 0.0815
			 , 0.0799, 0.0786, 0.0772, 0.0757, 0.0741, 0.0729, 0.0718
			 , 0.0706, 0.0692, 0.0680, 0.0669, 0.0655, 0.0643, 0.0630
			 , 0.0618, 0.0607, 0.0596, 0.0587, 0.0576, 0.0568, 0.0558
			 , 0.0550, 0.0541, 0.0531, 0.0522, 0.0513, 0.0505, 0.0497
			 , 0.0490, 0.0484, 0.0474, 0.0465, 0.0457, 0.0449, 0.0441
			 , 0.0433, 0.0425, 0.0417, 0.0410, 0.0402, 0.0395, 0.0388
			 , 0.0381, 0.0374, 0.0368, 0.0361, 0.0354, 0.0348, 0.0342
			 , 0.0336, 0.0330, 0.0324, 0.0318, 0.0312, 0.0306, 0.0301
			 , 0.0296, 0.0290, 0.0285, 0.0280, 0.0275, 0.0270, 0.0265
			 , 0.0260, 0.0256, 0.0251, 0.0246, 0.0242, 0.0238, 0.0233
			 , 0.0229, 0.0225, 0.0221, 0.0217, 0.0213, 0.0209, 0.0206
			 , 0.0202, 0.0198, 0.0195, 0.0191, 0.0188, 0.0184, 0.0181
			 , 0.0178, 0.0175, 0.0171, 0.0168, 0.0165, 0.0162, 0.0159
			 , 0.0157, 0.0154, 0.0151, 0.0148, 0.0146, 0.0143, 0.0140
			 , 0.0138, 0.0135, 0.0133, 0.0131, 0.0128, 0.0126, 0.0124
			 , 0.0121, 0.0119, 0.0120, 0.0115, 0.0113, 0.0111, 0.0109
			 , 0.0107, 0.0105, 0.0103, 0.0101, 0.0100, 0.0098, 0.0096
			 , 0.0094, 0.0092, 0.0091, 0.0089, 0.0088, 0.0086, 0.0084
			 , 0.0083, 0.0081, 0.0080, 0.0078 };

// 	// Andronic & Bercuci parametrization
// 	// define new TRF parametrization
// 		// normalizing constant to Fe signal
// 	const Float_t k1=1.055;
// 	// time constants
// 	const Float_t t1=0.04;
// 	const Float_t t2=.9;
// 	// the relative fraction of the long component
// 	const Float_t k2=.15;
// 	// time offset for Fe
// 	const Float_t t0=-.29;
// 	Float_t x = t0; Int_t index;
// 	for(int i=0; i<kNpasa; i++) signal[i] = 0.;
//   for(int i=0; i<kNpasa; i++){
// 		index = i+6;
// 		if(index >= kNpasa) break;
// 		x += .02;
// 		signal[index]=k1*(TMath::Power((x-t0)/t1, 2.5)*(exp(-(x-t0)/t1))+k2*exp(-(x-t0)/t2));
// 	}

	Float_t xtalk[kNpasa];

  // With undershoot, positive peak corresponds to ~3% of the main signal:
  for (Int_t ipasa = 3; ipasa < kNpasa; ipasa++) {
    xtalk[ipasa] = 0.2 * (signal[ipasa-2] - signal[ipasa-3]);
  }

  xtalk[0]  = 0.0;   
  xtalk[1]  = 0.0;  
  xtalk[2]  = 0.0;  

  signal[0] = 0.0;
  signal[1] = 0.0;
  signal[2] = 0.0;

  if (fTRFsmp) {
    delete [] fTRFsmp;
  }
  fTRFsmp = new Float_t[fTRFbin];

  if (fCTsmp)  {
    delete [] fCTsmp;
  }
  fCTsmp  = new Float_t[fTRFbin];

  for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
    fTRFsmp[iBin] = signal[iBin];
    fCTsmp[iBin]  = xtalk[iBin];
  }

}

//_____________________________________________________________________________
Double_t AliTRDSimParam::TimeResponse(Double_t time) const
{
  //
  // Applies the preamp shaper time response
  // (We assume a signal rise time of 0.2us = fTRFlo/2.
  //

  Int_t iBin = ((Int_t) ((time - fTRFlo/2.0) / fTRFwid)); 
  if ((iBin >=       0) && 
      (iBin <  fTRFbin)) {
    return fTRFsmp[iBin];
  }
  else {
    return 0.0;
  }    

}

//_____________________________________________________________________________
Double_t AliTRDSimParam::CrossTalk(Double_t time) const
{
  //
  // Applies the pad-pad capacitive cross talk
  //

  Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid)); 
  if ((iBin >=       0) && 
      (iBin <  fTRFbin)) {
    return fCTsmp[iBin];
  }
  else {
    return 0.0;
  }    

}
Commit	Line	Data
3551db50	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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
4d18a639	18	////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// Class containing constant simulation parameters //
	21	// //
	22	// Request an instance with AliTRDSimParam::Instance() //
	23	// Then request the needed values //
	24	// //
	25	////////////////////////////////////////////////////////////////////////////
3551db50	26
	27	#include <TMath.h>
	28
	29	#include "AliRun.h"
	30
	31	#include "AliTRDSimParam.h"
	32
	33	ClassImp(AliTRDSimParam)
	34
4d18a639	35	AliTRDSimParam *AliTRDSimParam::fgInstance = 0;
4d18a639	36	Bool_t AliTRDSimParam::fgTerminated = kFALSE;
3551db50	37
	38	//_ singleton implementation __________________________________________________
	39	AliTRDSimParam* AliTRDSimParam::Instance()
	40	{
	41	//
	42	// Singleton implementation
	43	// Returns an instance of this class, it is created if neccessary
	44	//
	45
4d18a639	46	if (fgTerminated != kFALSE) {
3551db50	47	return 0;
4d18a639	48	}
3551db50	49
4d18a639	50	if (fgInstance == 0) {
3551db50	51	fgInstance = new AliTRDSimParam();
4d18a639	52	}
4d18a639	53
3551db50	54	return fgInstance;
4d18a639	55
3551db50	56	}
3551db50	57
4d18a639	58	//_ singleton implementation __________________________________________________
3551db50	59	void AliTRDSimParam::Terminate()
	60	{
	61	//
	62	// Singleton implementation
4d18a639	63	// Deletes the instance of this class and sets the terminated flag,
4d18a639	64	// instances cannot be requested anymore
3551db50	65	// This function can be called several times.
	66	//
	67
	68	fgTerminated = kTRUE;
	69
4d18a639	70	if (fgInstance != 0) {
3551db50	71	delete fgInstance;
	72	fgInstance = 0;
	73	}
4d18a639	74
3551db50	75	}
	76
	77	//_____________________________________________________________________________
	78	AliTRDSimParam::AliTRDSimParam()
4d18a639	79	:TObject()
	80	,fGasGain(0.0)
	81	,fNoise(0.0)
	82	,fChipGain(0.0)
	83	,fADCoutRange(0.0)
	84	,fADCinRange(0.0)
4d18a639	85	,fADCbaseline(0)
	86	,fDiffusionOn(kFALSE)
	87	,fElAttachOn(kFALSE)
	88	,fElAttachProp(0.0)
	89	,fTRFOn(kFALSE)
	90	,fTRFsmp(0)
	91	,fTRFbin(0)
	92	,fTRFlo(0.0)
	93	,fTRFhi(0.0)
	94	,fTRFwid(0.0)
	95	,fCTOn(kFALSE)
	96	,fCTsmp(0)
	97	,fAnodeWireOffset(0.0)
	98	,fPadCoupling(0.0)
	99	,fTimeCoupling(0.0)
	100	,fTimeStructOn(kFALSE)
	101	,fPRFOn(kFALSE)
3551db50	102	{
3551db50	103	//
4d18a639	104	// Default constructor
3551db50	105	//
3551db50	106
3551db50	107	Init();
4d18a639	108
3551db50	109	}
	110
	111	//_____________________________________________________________________________
	112	void AliTRDSimParam::Init()
	113	{
	114	//
4d18a639	115	// Default initializiation
3551db50	116	//
	117
	118	// The default parameter for the digitization
b43a3e17	119	fGasGain = 4000.0;
b43a3e17	120	fChipGain = 12.4;
60243ea4	121	fNoise = 1250.0;
b43a3e17	122	fADCoutRange = 1023.0; // 10-bit ADC
b43a3e17	123	fADCinRange = 2000.0; // 2V input range
c2798013	124	// Go back to 0 again, just to be consistent with reconstruction
ecf39416	125	fADCbaseline = 0;
c2798013	126	//fADCbaseline = 10;
3551db50	127
3551db50	128	// Diffusion on
b43a3e17	129	fDiffusionOn = kTRUE;
3551db50	130
3551db50	131	// Propability for electron attachment
b43a3e17	132	fElAttachOn = kFALSE;
b43a3e17	133	fElAttachProp = 0.0;
3551db50	134
3551db50	135	// The time response function
b43a3e17	136	fTRFOn = kTRUE;
3551db50	137
3551db50	138	// The cross talk
b43a3e17	139	fCTOn = kTRUE;
3551db50	140
3551db50	141	// The pad coupling factor
4d18a639	142	// Use 0.46, instead of the theroetical value 0.3, since it reproduces better
4d18a639	143	// the test beam data, even tough it is not understood why.
b43a3e17	144	fPadCoupling = 0.46;
3551db50	145
3551db50	146	// The time coupling factor (same number as for the TPC)
b43a3e17	147	fTimeCoupling = 0.4;
3551db50	148
3551db50	149	// Distance of first Anode wire from first pad edge
b43a3e17	150	fAnodeWireOffset = 0.25;
3551db50	151
3551db50	152	// Use drift time maps
b43a3e17	153	fTimeStructOn = kTRUE;
3551db50	154
cc7cef99	155	// The pad response function
b43a3e17	156	fPRFOn = kTRUE;
cc7cef99	157
3551db50	158	ReInit();
4d18a639	159
ab0a4106	160	}
3551db50	161
	162	//_____________________________________________________________________________
	163	AliTRDSimParam::~AliTRDSimParam()
	164	{
	165	//
4d18a639	166	// Destructor
3551db50	167	//
	168
	169	if (fTRFsmp) {
	170	delete [] fTRFsmp;
	171	fTRFsmp = 0;
	172	}
	173
	174	if (fCTsmp) {
	175	delete [] fCTsmp;
	176	fCTsmp = 0;
	177	}
4d18a639	178
ab0a4106	179	}
3551db50	180
3551db50	181	//_____________________________________________________________________________
4d18a639	182	AliTRDSimParam::AliTRDSimParam(const AliTRDSimParam &p)
	183	:TObject(p)
	184	,fGasGain(p.fGasGain)
	185	,fNoise(p.fNoise)
	186	,fChipGain(p.fChipGain)
	187	,fADCoutRange(p.fADCoutRange)
	188	,fADCinRange(p.fADCinRange)
4d18a639	189	,fADCbaseline(p.fADCbaseline)
	190	,fDiffusionOn(p.fDiffusionOn)
	191	,fElAttachOn(p.fElAttachOn)
	192	,fElAttachProp(p.fElAttachProp)
	193	,fTRFOn(p.fTRFOn)
	194	,fTRFsmp(0)
	195	,fTRFbin(p.fTRFbin)
	196	,fTRFlo(p.fTRFlo)
	197	,fTRFhi(p.fTRFhi)
	198	,fTRFwid(p.fTRFwid)
	199	,fCTOn(p.fCTOn)
	200	,fCTsmp(0)
	201	,fAnodeWireOffset(p.fAnodeWireOffset)
	202	,fPadCoupling(p.fPadCoupling)
	203	,fTimeCoupling(p.fTimeCoupling)
	204	,fTimeStructOn(p.fTimeStructOn)
	205	,fPRFOn(p.fPRFOn)
3551db50	206	{
3551db50	207	//
4d18a639	208	// Copy constructor
3551db50	209	//
3551db50	210
4d18a639	211	Int_t iBin = 0;
	212
	213	if (((AliTRDSimParam &) p).fTRFsmp) {
	214	delete [] ((AliTRDSimParam &) p).fTRFsmp;
	215	}
	216	((AliTRDSimParam &) p).fTRFsmp = new Float_t[fTRFbin];
	217	for (iBin = 0; iBin < fTRFbin; iBin++) {
	218	((AliTRDSimParam &) p).fTRFsmp[iBin] = fTRFsmp[iBin];
	219	}
	220
	221	if (((AliTRDSimParam &) p).fCTsmp) {
	222	delete [] ((AliTRDSimParam &) p).fCTsmp;
	223	}
	224	((AliTRDSimParam &) p).fCTsmp = new Float_t[fTRFbin];
	225	for (iBin = 0; iBin < fTRFbin; iBin++) {
	226	((AliTRDSimParam &) p).fCTsmp[iBin] = fCTsmp[iBin];
	227	}
3551db50	228
4d18a639	229	}
3551db50	230
	231	//_____________________________________________________________________________
	232	AliTRDSimParam &AliTRDSimParam::operator=(const AliTRDSimParam &p)
	233	{
	234	//
	235	// Assignment operator
	236	//
	237
b43a3e17	238	if (this != &p) {
	239	((AliTRDSimParam &) p).Copy(*this);
	240	}
4d18a639	241
3551db50	242	return *this;
4d18a639	243
3551db50	244	}
	245
	246	//_____________________________________________________________________________
	247	void AliTRDSimParam::Copy(TObject &p) const
	248	{
	249	//
	250	// Copy function
	251	//
	252
b43a3e17	253	AliTRDSimParam target = dynamic_cast<AliTRDSimParam > (&p);
4d18a639	254	if (!target) {
3551db50	255	return;
4d18a639	256	}
3551db50	257
3551db50	258	target->fGasGain = fGasGain;
3551db50	259	target->fNoise = fNoise;
4d18a639	260	target->fChipGain = fChipGain;
3551db50	261	target->fADCoutRange = fADCoutRange;
3551db50	262	target->fADCinRange = fADCinRange;
3551db50	263	target->fADCbaseline = fADCbaseline;
3551db50	264	target->fDiffusionOn = fDiffusionOn;
3551db50	265	target->fElAttachOn = fElAttachOn;
3551db50	266	target->fElAttachProp = fElAttachProp;
3551db50	267	target->fTRFOn = fTRFOn;
3551db50	268	target->fTRFbin = fTRFbin;
	269	target->fTRFlo = fTRFlo;
	270	target->fTRFhi = fTRFhi;
	271	target->fTRFwid = fTRFwid;
3551db50	272	target->fCTOn = fCTOn;
4d18a639	273	target->fAnodeWireOffset = fAnodeWireOffset;
	274	target->fPadCoupling = fPadCoupling;
	275	target->fTimeCoupling = fTimeCoupling;
	276	target->fPRFOn = fPRFOn;
	277
	278	if (target->fTRFsmp) {
	279	delete[] target->fTRFsmp;
	280	}
	281	target->fTRFsmp = new Float_t[fTRFbin];
	282	for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
	283	target->fTRFsmp[iBin] = fTRFsmp[iBin];
	284	}
	285
	286	if (target->fCTsmp) {
3551db50	287	delete[] target->fCTsmp;
4d18a639	288	}
3551db50	289	target->fCTsmp = new Float_t[fTRFbin];
	290	for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
	291	target->fCTsmp[iBin] = fCTsmp[iBin];
	292	}
	293
3551db50	294	}
	295
	296	//_____________________________________________________________________________
	297	void AliTRDSimParam::ReInit()
	298	{
	299	//
	300	// Reinitializes the parameter class after a change
	301	//
	302
	303	// The range and the binwidth for the sampled TRF
915f999b	304	fTRFbin = 200;
3551db50	305	// Start 0.2 mus before the signal
915f999b	306	fTRFlo = -0.4;
3551db50	307	// End the maximum drift time after the signal
4d18a639	308	fTRFhi = 3.58;
3551db50	309	fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);
	310
	311	// Create the sampled TRF
	312	SampleTRF();
3551db50	313
4d18a639	314	}
915f999b	315
3551db50	316	//_____________________________________________________________________________
	317	void AliTRDSimParam::SampleTRF()
	318	{
	319	//
915f999b	320	// Samples the new time response function.
	321	// From Antons measurements with Fe55 source, adjusted by C. Lippmann.
	322	// time bins are -0.4, -0.38, -0.36, ...., 3.54, 3.56, 3.58 microseconds
3551db50	323	//
3551db50	324
915f999b	325	const Int_t kNpasa = 200; // kNpasa should be equal to fTRFbin!
915f999b	326
4d18a639	327	Float_t signal[kNpasa]={ 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000
	328	, 0.0002, 0.0007, 0.0026, 0.0089, 0.0253, 0.0612, 0.1319
	329	, 0.2416, 0.3913, 0.5609, 0.7295, 0.8662, 0.9581, 1.0000
	330	, 0.9990, 0.9611, 0.8995, 0.8269, 0.7495, 0.6714, 0.5987
	331	, 0.5334, 0.4756, 0.4249, 0.3811, 0.3433, 0.3110, 0.2837
	332	, 0.2607, 0.2409, 0.2243, 0.2099, 0.1974, 0.1868, 0.1776
	333	, 0.1695, 0.1627, 0.1566, 0.1509, 0.1457, 0.1407, 0.1362
	334	, 0.1317, 0.1274, 0.1233, 0.1196, 0.1162, 0.1131, 0.1102
	335	, 0.1075, 0.1051, 0.1026, 0.1004, 0.0979, 0.0956, 0.0934
	336	, 0.0912, 0.0892, 0.0875, 0.0858, 0.0843, 0.0829, 0.0815
	337	, 0.0799, 0.0786, 0.0772, 0.0757, 0.0741, 0.0729, 0.0718
	338	, 0.0706, 0.0692, 0.0680, 0.0669, 0.0655, 0.0643, 0.0630
	339	, 0.0618, 0.0607, 0.0596, 0.0587, 0.0576, 0.0568, 0.0558
	340	, 0.0550, 0.0541, 0.0531, 0.0522, 0.0513, 0.0505, 0.0497
	341	, 0.0490, 0.0484, 0.0474, 0.0465, 0.0457, 0.0449, 0.0441
	342	, 0.0433, 0.0425, 0.0417, 0.0410, 0.0402, 0.0395, 0.0388
	343	, 0.0381, 0.0374, 0.0368, 0.0361, 0.0354, 0.0348, 0.0342
	344	, 0.0336, 0.0330, 0.0324, 0.0318, 0.0312, 0.0306, 0.0301
	345	, 0.0296, 0.0290, 0.0285, 0.0280, 0.0275, 0.0270, 0.0265
	346	, 0.0260, 0.0256, 0.0251, 0.0246, 0.0242, 0.0238, 0.0233
	347	, 0.0229, 0.0225, 0.0221, 0.0217, 0.0213, 0.0209, 0.0206
	348	, 0.0202, 0.0198, 0.0195, 0.0191, 0.0188, 0.0184, 0.0181
	349	, 0.0178, 0.0175, 0.0171, 0.0168, 0.0165, 0.0162, 0.0159
	350	, 0.0157, 0.0154, 0.0151, 0.0148, 0.0146, 0.0143, 0.0140
	351	, 0.0138, 0.0135, 0.0133, 0.0131, 0.0128, 0.0126, 0.0124
	352	, 0.0121, 0.0119, 0.0120, 0.0115, 0.0113, 0.0111, 0.0109
	353	, 0.0107, 0.0105, 0.0103, 0.0101, 0.0100, 0.0098, 0.0096
	354	, 0.0094, 0.0092, 0.0091, 0.0089, 0.0088, 0.0086, 0.0084
	355	, 0.0083, 0.0081, 0.0080, 0.0078 };
915f999b	356
c2624043	357	// // Andronic & Bercuci parametrization
	358	// // define new TRF parametrization
	359	// // normalizing constant to Fe signal
	360	// const Float_t k1=1.055;
	361	// // time constants
	362	// const Float_t t1=0.04;
	363	// const Float_t t2=.9;
	364	// // the relative fraction of the long component
	365	// const Float_t k2=.15;
	366	// // time offset for Fe
	367	// const Float_t t0=-.29;
	368	// Float_t x = t0; Int_t index;
	369	// for(int i=0; i<kNpasa; i++) signal[i] = 0.;
	370	// for(int i=0; i<kNpasa; i++){
	371	// index = i+6;
	372	// if(index >= kNpasa) break;
	373	// x += .02;
	374	// signal[index]=k1(TMath::Power((x-t0)/t1, 2.5)(exp(-(x-t0)/t1))+k2*exp(-(x-t0)/t2));
	375	// }
ab0321fe	376
ab0321fe	377	Float_t xtalk[kNpasa];
915f999b	378
4d18a639	379	// With undershoot, positive peak corresponds to ~3% of the main signal:
915f999b	380	for (Int_t ipasa = 3; ipasa < kNpasa; ipasa++) {
4d18a639	381	xtalk[ipasa] = 0.2 * (signal[ipasa-2] - signal[ipasa-3]);
3551db50	382	}
3551db50	383
4d18a639	384	xtalk[0] = 0.0;
	385	xtalk[1] = 0.0;
	386	xtalk[2] = 0.0;
915f999b	387
4d18a639	388	signal[0] = 0.0;
	389	signal[1] = 0.0;
	390	signal[2] = 0.0;
	391
	392	if (fTRFsmp) {
	393	delete [] fTRFsmp;
	394	}
3551db50	395	fTRFsmp = new Float_t[fTRFbin];
4d18a639	396
	397	if (fCTsmp) {
	398	delete [] fCTsmp;
	399	}
3551db50	400	fCTsmp = new Float_t[fTRFbin];
3551db50	401
3551db50	402	for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
915f999b	403	fTRFsmp[iBin] = signal[iBin];
915f999b	404	fCTsmp[iBin] = xtalk[iBin];
3551db50	405	}
	406
	407	}
	408
	409	//_____________________________________________________________________________
	410	Double_t AliTRDSimParam::TimeResponse(Double_t time) const
	411	{
	412	//
	413	// Applies the preamp shaper time response
915f999b	414	// (We assume a signal rise time of 0.2us = fTRFlo/2.
3551db50	415	//
3551db50	416
4d18a639	417	Int_t iBin = ((Int_t) ((time - fTRFlo/2.0) / fTRFwid));
	418	if ((iBin >= 0) &&
	419	(iBin < fTRFbin)) {
3551db50	420	return fTRFsmp[iBin];
	421	}
	422	else {
	423	return 0.0;
	424	}
	425
	426	}
	427
	428	//_____________________________________________________________________________
	429	Double_t AliTRDSimParam::CrossTalk(Double_t time) const
	430	{
	431	//
	432	// Applies the pad-pad capacitive cross talk
	433	//
	434
	435	Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
4d18a639	436	if ((iBin >= 0) &&
4d18a639	437	(iBin < fTRFbin)) {
3551db50	438	return fCTsmp[iBin];
	439	}
	440	else {
	441	return 0.0;
	442	}
	443
	444	}