[u/mrichter/AliRoot.git] / FMD / analysis / AliFMDAnaParameters.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.                  *
 **************************************************************************/
//
//The design of this class is based on the AliFMDParameters class. Its purpose
//is to hold parameters for the analysis such as background correction and 
//fit functions.
//
//Author: Hans Hjersing Dalsgaard, NBI, hans.dalsgaard@cern.ch
//

#include "AliFMDDebug.h"		   // ALILOG_H
#include "AliFMDAnaParameters.h"	   // ALIFMDPARAMETERS_H
//#include <AliCDBManager.h>         // ALICDBMANAGER_H
//#include <AliCDBEntry.h>           // ALICDBMANAGER_H
//#include "AliFMDRing.h"
#include <AliLog.h>
#include <Riostream.h>
#include <sstream>
#include <TSystem.h>
#include <TH2D.h>
#include <TF1.h>
#include <TMath.h>

//====================================================================
ClassImp(AliFMDAnaParameters)
#if 0
  ; // This is here to keep Emacs for indenting the next line
#endif

const char* AliFMDAnaParameters::fgkBackgroundCorrection  = "FMD/Correction/Background";
const char* AliFMDAnaParameters::fgkEnergyDists = "FMD/Correction/EnergyDistribution";
const char* AliFMDAnaParameters::fkBackgroundID = "background";
const char* AliFMDAnaParameters::fkEnergyDistributionID = "energydistributions";
//____________________________________________________________________
AliFMDAnaParameters* AliFMDAnaParameters::fgInstance = 0;

//____________________________________________________________________

AliFMDAnaParameters* 
AliFMDAnaParameters::Instance() 
{
  // Get static instance 
  if (!fgInstance) fgInstance = new AliFMDAnaParameters;
  return fgInstance;
}

//____________________________________________________________________
AliFMDAnaParameters::AliFMDAnaParameters() :
  fIsInit(kFALSE),
  fBackground(0),
  fEnergyDistribution(0),
  fCorner1(4.2231, 26.6638),
  fCorner2(1.8357, 27.9500),
  fEnergyPath("$ALICE_ROOT/FMD/Correction/EnergyDistribution/energydistributions.root"),
  fBackgroundPath("$ALICE_ROOT/FMD/Correction/Background/background.root")
{
  
  
  //fVerticies.Add(new TVector2(4.2231, 26.6638));
  // fVerticies.Add(new TVector2(1.8357, 27.9500));
  // Default constructor 
}
//____________________________________________________________________
void AliFMDAnaParameters::Init(Bool_t forceReInit, UInt_t what)
{
  // Initialize the parameters manager.  We need to get stuff from the
  // CDB here. 
  if (forceReInit) fIsInit = kFALSE;
  if (fIsInit) return;
  if (what & kBackgroundCorrection)       InitBackground();
  if (what & kEnergyDistributions)        InitEnergyDists();
  
  
  fIsInit = kTRUE;
}
//____________________________________________________________________

void AliFMDAnaParameters::InitBackground() {
  
  //AliCDBEntry*   background = GetEntry(fgkBackgroundCorrection);
  TFile* fin = TFile::Open(fBackgroundPath.Data());
  
  if (!fin) return;
  
  fBackground = dynamic_cast<AliFMDAnaCalibBackgroundCorrection*>(fin->Get(fkBackgroundID));
  if (!fBackground) AliFatal("Invalid background object from CDB");
  
}
//____________________________________________________________________

void AliFMDAnaParameters::InitEnergyDists() {
  
  TFile* fin = TFile::Open(fEnergyPath.Data());
  //AliCDBEntry*   edist = GetEntry(fgkEnergyDists);
  if (!fin) return;
  
  fEnergyDistribution = dynamic_cast<AliFMDAnaCalibEnergyDistribution*>(fin->Get(fkEnergyDistributionID));
  
  if (!fEnergyDistribution) AliFatal("Invalid background object from CDB");
  
}
//____________________________________________________________________
Float_t AliFMDAnaParameters::GetVtxCutZ() {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return -1;
  }
  
  return fBackground->GetVtxCutZ();
}

//____________________________________________________________________
Int_t AliFMDAnaParameters::GetNvtxBins() {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return -1;
  }
  
  return fBackground->GetNvtxBins();
}
//____________________________________________________________________
TH1F* AliFMDAnaParameters::GetEnergyDistribution(Int_t det, Char_t ring, Float_t eta) {
  
  return fEnergyDistribution->GetEnergyDistribution(det, ring, eta);
}
//____________________________________________________________________
Float_t AliFMDAnaParameters::GetSigma(Int_t det, Char_t ring, Float_t eta) {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return 0;
  }
  
  TH1F* hEnergyDist       = GetEnergyDistribution(det,ring, eta);
  TF1*  fitFunc           = hEnergyDist->GetFunction("FMDfitFunc");
  if(!fitFunc) {
    AliWarning(Form("No function for FMD%d%c, eta %f",det,ring,eta));
    return 1024;
  }
  Float_t sigma           = fitFunc->GetParameter(2);
  return sigma;
}


//____________________________________________________________________
Float_t AliFMDAnaParameters::GetMPV(Int_t det, Char_t ring, Float_t eta) {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return 0;
  }
  
  TH1F* hEnergyDist     = GetEnergyDistribution(det,ring,eta);
  TF1*  fitFunc         = hEnergyDist->GetFunction("FMDfitFunc");
  if(!fitFunc) {
    AliWarning(Form("No function for FMD%d%c, eta %f",det,ring,eta));
    return 1024;
  }
    
  Float_t MPV           = fitFunc->GetParameter(1);
  return MPV;
}
//____________________________________________________________________
Float_t AliFMDAnaParameters::Get2MIPWeight(Int_t det, Char_t ring, Float_t eta) {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return 0;
  }
  
  TH1F* hEnergyDist     = GetEnergyDistribution(det,ring,eta);
  TF1*  fitFunc         = hEnergyDist->GetFunction("FMDfitFunc");
  if(!fitFunc) return 0;
  Float_t TwoMIPweight    = fitFunc->GetParameter(3);
  
  
  if(TwoMIPweight < 1e-05)
    TwoMIPweight = 0;
  
  return TwoMIPweight;
}
//____________________________________________________________________
Float_t AliFMDAnaParameters::Get3MIPWeight(Int_t det, Char_t ring, Float_t eta) {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return 0;
  }
  
  TH1F* hEnergyDist     = GetEnergyDistribution(det,ring,eta);
  TF1*  fitFunc         = hEnergyDist->GetFunction("FMDfitFunc");
  if(!fitFunc) return 0;
  Float_t ThreeMIPweight    = fitFunc->GetParameter(4);
  
  if(ThreeMIPweight < 1e-05)
    ThreeMIPweight = 0;
  
  Float_t TwoMIPweight    = fitFunc->GetParameter(3);
  
  if(TwoMIPweight < 1e-05)
    ThreeMIPweight = 0;
    
  return ThreeMIPweight;
}
//____________________________________________________________________
Int_t AliFMDAnaParameters::GetNetaBins() {
  return GetBackgroundCorrection(1,'I',0)->GetNbinsX();
  
}
//____________________________________________________________________
Float_t AliFMDAnaParameters::GetEtaMin() {

  return GetBackgroundCorrection(1,'I',0)->GetXaxis()->GetXmin();
} 
//____________________________________________________________________
Float_t AliFMDAnaParameters::GetEtaMax() {

return GetBackgroundCorrection(1,'I',0)->GetXaxis()->GetXmax();

}
//____________________________________________________________________

TH2F* AliFMDAnaParameters::GetBackgroundCorrection(Int_t det, 
						   Char_t ring, 
						   Int_t vtxbin) {
  
  if(!fIsInit) {
    AliWarning("Not initialized yet. Call Init() to remedy");
    return 0;
  }
  
  
  if(vtxbin > fBackground->GetNvtxBins()) {
    AliWarning(Form("No background object for vertex bin %d", vtxbin));
    return 0;
  } 
  
  return fBackground->GetBgCorrection(det,ring,vtxbin);
}
//_____________________________________________________________________
Float_t AliFMDAnaParameters::GetMaxR(Char_t ring) {
  Float_t radius = 0;
  if(ring == 'I')
    radius = 17.2;
  else if(ring == 'O')
    radius = 28.0;
  else
    AliWarning("Unknown ring - must be I or O!");
  
  return radius;
}
//_____________________________________________________________________
Float_t AliFMDAnaParameters::GetMinR(Char_t ring) {
  Float_t radius = 0;
  if(ring == 'I')
    radius = 4.5213;
  else if(ring == 'O')
    radius = 15.4;
  else
    AliWarning("Unknown ring - must be I or O!");
  
  return radius;

}
//_____________________________________________________________________
void AliFMDAnaParameters::SetCorners(Char_t ring) {
  
  if(ring == 'I') {
    fCorner1.Set(4.9895, 15.3560);
    fCorner2.Set(1.8007, 17.2000);
  }
  else {
    fCorner1.Set(4.2231, 26.6638);
    fCorner2.Set(1.8357, 27.9500);
  }
  
}
//_____________________________________________________________________
Float_t AliFMDAnaParameters::GetPhiFromSector(UShort_t det, Char_t ring, UShort_t sec)
{
  Int_t nsec = (ring == 'I' ? 20 : 40);
  Float_t basephi = 0;
  if(det == 1) 
    basephi = 1.72787594; 
  if(det == 2 && ring == 'I')
    basephi = 0.15707963;
  if(det == 2 && ring == 'O')
    basephi = 0.078539818;
  if(det == 3 && ring == 'I')
    basephi = 2.984513044;
  if(det == 3 && ring == 'O')
    basephi = 3.06305289;
  
  Float_t step = 2*TMath::Pi() / nsec;
  Float_t phi = 0;
  if(det == 3)
    phi = basephi - sec*step;
  else
    phi = basephi + sec*step;
  
  if(phi < 0) 
    phi = phi +2*TMath::Pi();
  if(phi > 2*TMath::Pi() )
    phi = phi - 2*TMath::Pi();
  
  return phi;
}
//_____________________________________________________________________
Float_t AliFMDAnaParameters::GetEtaFromStrip(UShort_t det, Char_t ring, UShort_t sec, UShort_t strip, Float_t zvtx)
{
  // AliFMDRing fmdring(ring);
  // fmdring.Init();
  Float_t   rad       = GetMaxR(ring)-GetMinR(ring);
  Float_t   Nstrips   = (ring == 'I' ? 512 : 256);
  Float_t   segment   = rad / Nstrips;
  Float_t   r         = GetMinR(ring) + segment*strip;
  Float_t   z         = 0;
  Int_t hybrid = sec / 2;
  
  if(det == 1) {
    if(!(hybrid%2)) z = 320.266; else z = 319.766;
  }
  if(det == 2 && ring == 'I' ) {
    if(!(hybrid%2)) z = 83.666; else z = 83.166;
  }
  if(det == 2 && ring == 'O' ) {
    if(!(hybrid%2)) z = 74.966; else z = 75.466;
  }
  if(det == 3 && ring == 'I' ) {
    if(!(hybrid%2)) z = -63.066; else z = -62.566;
  }
  if(det == 3 && ring == 'O' ) {
    if(!(hybrid%2)) z = -74.966; else z = -75.466;
  }
  
  //std::cout<<det<<"   "<<ring<<"   "<<sec<<"   "<<hybrid<<"    "<<z<<std::endl;
  
  // Float_t   r     = TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
  Float_t   theta = TMath::ATan2(r,z-zvtx);
  Float_t   eta   = -1*TMath::Log(TMath::Tan(0.5*theta));
  
  return eta;
}/*
//____________________________________________________________________
AliCDBEntry* AliFMDAnaParameters::GetEntry(const char* path, Bool_t fatal) const
{
  // Get an entry from the CDB or via preprocessor 
  AliCDBEntry* entry = 0;
  AliCDBManager* cdb = AliCDBManager::Instance();
  entry              = cdb->Get(path);
  
  if (!entry) { 
    TString msg(Form("No %s found in CDB, perhaps you need to "
		     "use AliFMDCalibFaker?", path));
    if (fatal) { AliFatal(msg.Data()); }
    else       AliLog::Message(AliLog::kWarning, msg.Data(), "FMD", 
			       "AliFMDParameters", "GetEntry", __FILE__, 
			       __LINE__);
    return 0;
  }
  return entry;
}
 */
//____________________________________________________________________
Float_t 
AliFMDAnaParameters::GetStripLength(Char_t ring, UShort_t strip)  
{
  //AliFMDRing fmdring(ring);
  // fmdring.Init();
  
  Float_t rad        = GetMaxR(ring)-GetMinR(ring);
  Float_t   Nstrips   = (ring == 'I' ? 512 : 256);
  Float_t segment    = rad / Nstrips;
  
  //TVector2* corner1  = fmdring.GetVertex(2);  
  // TVector2* corner2  = fmdring.GetVertex(3);
  
  SetCorners(ring);
  /*
  std::cout<<GetMaxR(ring)<<"   "<<fmdring.GetMaxR()<<std::endl;
  std::cout<<GetMinR(ring)<<"   "<<fmdring.GetMinR()<<std::endl;
  std::cout<<corner1->X()<<"   "<<fCorner1.X()<<std::endl;
  std::cout<<corner2->X()<<"   "<<fCorner2.X()<<std::endl;
  std::cout<<corner1->Y()<<"   "<<fCorner1.Y()<<std::endl;
  std::cout<<corner2->Y()<<"   "<<fCorner2.Y()<<std::endl;*/
  Float_t slope      = (fCorner1.Y() - fCorner2.Y()) / (fCorner1.X() - fCorner2.X());
  Float_t constant   = (fCorner2.Y()*fCorner1.X()-(fCorner2.X()*fCorner1.Y())) / (fCorner1.X() - fCorner2.X());
  Float_t radius     = GetMinR(ring) + strip*segment;
  
  Float_t d          = TMath::Power(TMath::Abs(radius*slope),2) + TMath::Power(radius,2) - TMath::Power(constant,2);
  
  Float_t arclength  = GetBaseStripLength(ring,strip);
  if(d>0) {
    
    Float_t x        = (-1*TMath::Sqrt(d) -slope*constant) / (1+TMath::Power(slope,2));
    Float_t y        = slope*x + constant;
    Float_t theta    = TMath::ATan2(x,y);
    
    if(x < fCorner1.X() && y > fCorner1.Y()) {
      arclength = radius*theta;                        //One sector since theta is by definition half-hybrid
      
    }
    
  }
  
  return arclength;
  
  
}
//____________________________________________________________________
Float_t 
AliFMDAnaParameters::GetBaseStripLength(Char_t ring, UShort_t strip)  
{  
  // AliFMDRing fmdring(ring);
  // fmdring.Init();
  Float_t rad             = GetMaxR(ring)-GetMinR(ring);
  Float_t Nstrips         = (ring == 'I' ? 512 : 256);
  Float_t Nsec            = (ring == 'I' ? 20 : 40);
  Float_t segment         = rad / Nstrips;
  Float_t basearc         = 2*TMath::Pi() / (0.5*Nsec); // One hybrid: 36 degrees inner, 18 outer
  Float_t radius          = GetMinR(ring) + strip*segment;
  Float_t basearclength   = 0.5*basearc * radius;                // One sector   
  
  return basearclength;
}
//____________________________________________________________________
//
// EOF
//
Commit	Line	Data
d7346eed	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	//The design of this class is based on the AliFMDParameters class. Its purpose
	17	//is to hold parameters for the analysis such as background correction and
	18	//fit functions.
	19	//
	20	//Author: Hans Hjersing Dalsgaard, NBI, hans.dalsgaard@cern.ch
	21	//
	22
	23	#include "AliFMDDebug.h" // ALILOG_H
	24	#include "AliFMDAnaParameters.h" // ALIFMDPARAMETERS_H
78f6f750	25	//#include <AliCDBManager.h> // ALICDBMANAGER_H
	26	//#include <AliCDBEntry.h> // ALICDBMANAGER_H
	27	//#include "AliFMDRing.h"
d7346eed	28	#include <AliLog.h>
	29	#include <Riostream.h>
	30	#include <sstream>
	31	#include <TSystem.h>
	32	#include <TH2D.h>
8dc823cc	33	#include <TF1.h>
f58a4769	34	#include <TMath.h>
d7346eed	35
	36	//====================================================================
	37	ClassImp(AliFMDAnaParameters)
	38	#if 0
	39	; // This is here to keep Emacs for indenting the next line
	40	#endif
	41
b82e76e0	42	const char* AliFMDAnaParameters::fgkBackgroundCorrection = "FMD/Correction/Background";
78f6f750	43	const char* AliFMDAnaParameters::fgkEnergyDists = "FMD/Correction/EnergyDistribution";
	44	const char* AliFMDAnaParameters::fkBackgroundID = "background";
	45	const char* AliFMDAnaParameters::fkEnergyDistributionID = "energydistributions";
d7346eed	46	//____________________________________________________________________
	47	AliFMDAnaParameters* AliFMDAnaParameters::fgInstance = 0;
	48
	49	//____________________________________________________________________
	50
	51	AliFMDAnaParameters*
	52	AliFMDAnaParameters::Instance()
	53	{
	54	// Get static instance
	55	if (!fgInstance) fgInstance = new AliFMDAnaParameters;
	56	return fgInstance;
	57	}
	58
	59	//____________________________________________________________________
	60	AliFMDAnaParameters::AliFMDAnaParameters() :
	61	fIsInit(kFALSE),
b82e76e0	62	fBackground(0),
78f6f750	63	fEnergyDistribution(0),
	64	fCorner1(4.2231, 26.6638),
	65	fCorner2(1.8357, 27.9500),
	66	fEnergyPath("$ALICE_ROOT/FMD/Correction/EnergyDistribution/energydistributions.root"),
	67	fBackgroundPath("$ALICE_ROOT/FMD/Correction/Background/background.root")
d7346eed	68	{
d7346eed	69
78f6f750	70
	71	//fVerticies.Add(new TVector2(4.2231, 26.6638));
	72	// fVerticies.Add(new TVector2(1.8357, 27.9500));
d7346eed	73	// Default constructor
	74	}
	75	//____________________________________________________________________
	76	void AliFMDAnaParameters::Init(Bool_t forceReInit, UInt_t what)
	77	{
	78	// Initialize the parameters manager. We need to get stuff from the
	79	// CDB here.
	80	if (forceReInit) fIsInit = kFALSE;
	81	if (fIsInit) return;
	82	if (what & kBackgroundCorrection) InitBackground();
	83	if (what & kEnergyDistributions) InitEnergyDists();
	84
78f6f750	85
d7346eed	86	fIsInit = kTRUE;
	87	}
	88	//____________________________________________________________________
	89
	90	void AliFMDAnaParameters::InitBackground() {
	91
78f6f750	92	//AliCDBEntry* background = GetEntry(fgkBackgroundCorrection);
	93	TFile* fin = TFile::Open(fBackgroundPath.Data());
	94
	95	if (!fin) return;
d7346eed	96
78f6f750	97	fBackground = dynamic_cast<AliFMDAnaCalibBackgroundCorrection*>(fin->Get(fkBackgroundID));
b82e76e0	98	if (!fBackground) AliFatal("Invalid background object from CDB");
d7346eed	99
	100	}
	101	//____________________________________________________________________
	102
	103	void AliFMDAnaParameters::InitEnergyDists() {
	104
78f6f750	105	TFile* fin = TFile::Open(fEnergyPath.Data());
	106	//AliCDBEntry* edist = GetEntry(fgkEnergyDists);
	107	if (!fin) return;
d7346eed	108
78f6f750	109	fEnergyDistribution = dynamic_cast<AliFMDAnaCalibEnergyDistribution*>(fin->Get(fkEnergyDistributionID));
d7346eed	110
b82e76e0	111	if (!fEnergyDistribution) AliFatal("Invalid background object from CDB");
d7346eed	112
	113	}
	114	//____________________________________________________________________
	115	Float_t AliFMDAnaParameters::GetVtxCutZ() {
	116
	117	if(!fIsInit) {
	118	AliWarning("Not initialized yet. Call Init() to remedy");
	119	return -1;
	120	}
	121
b82e76e0	122	return fBackground->GetVtxCutZ();
d7346eed	123	}
	124
	125	//____________________________________________________________________
	126	Int_t AliFMDAnaParameters::GetNvtxBins() {
	127
	128	if(!fIsInit) {
	129	AliWarning("Not initialized yet. Call Init() to remedy");
	130	return -1;
	131	}
	132
b82e76e0	133	return fBackground->GetNvtxBins();
d7346eed	134	}
d7346eed	135	//____________________________________________________________________
5754671c	136	TH1F* AliFMDAnaParameters::GetEnergyDistribution(Int_t det, Char_t ring, Float_t eta) {
d7346eed	137
5754671c	138	return fEnergyDistribution->GetEnergyDistribution(det, ring, eta);
8dc823cc	139	}
8dc823cc	140	//____________________________________________________________________
5754671c	141	Float_t AliFMDAnaParameters::GetSigma(Int_t det, Char_t ring, Float_t eta) {
8dc823cc	142
d7346eed	143	if(!fIsInit) {
	144	AliWarning("Not initialized yet. Call Init() to remedy");
	145	return 0;
	146	}
	147
5754671c	148	TH1F* hEnergyDist = GetEnergyDistribution(det,ring, eta);
	149	TF1* fitFunc = hEnergyDist->GetFunction("FMDfitFunc");
	150	if(!fitFunc) {
	151	AliWarning(Form("No function for FMD%d%c, eta %f",det,ring,eta));
	152	return 1024;
	153	}
	154	Float_t sigma = fitFunc->GetParameter(2);
8dc823cc	155	return sigma;
	156	}
	157
	158
	159	//____________________________________________________________________
5754671c	160	Float_t AliFMDAnaParameters::GetMPV(Int_t det, Char_t ring, Float_t eta) {
8dc823cc	161
	162	if(!fIsInit) {
	163	AliWarning("Not initialized yet. Call Init() to remedy");
	164	return 0;
	165	}
	166
5754671c	167	TH1F* hEnergyDist = GetEnergyDistribution(det,ring,eta);
	168	TF1* fitFunc = hEnergyDist->GetFunction("FMDfitFunc");
	169	if(!fitFunc) {
	170	AliWarning(Form("No function for FMD%d%c, eta %f",det,ring,eta));
	171	return 1024;
	172	}
	173
	174	Float_t MPV = fitFunc->GetParameter(1);
8dc823cc	175	return MPV;
d7346eed	176	}
d7346eed	177	//____________________________________________________________________
5754671c	178	Float_t AliFMDAnaParameters::Get2MIPWeight(Int_t det, Char_t ring, Float_t eta) {
	179
	180	if(!fIsInit) {
	181	AliWarning("Not initialized yet. Call Init() to remedy");
	182	return 0;
	183	}
	184
	185	TH1F* hEnergyDist = GetEnergyDistribution(det,ring,eta);
	186	TF1* fitFunc = hEnergyDist->GetFunction("FMDfitFunc");
	187	if(!fitFunc) return 0;
	188	Float_t TwoMIPweight = fitFunc->GetParameter(3);
	189
	190
	191
	192	if(TwoMIPweight < 1e-05)
	193	TwoMIPweight = 0;
	194
	195	return TwoMIPweight;
	196	}
	197	//____________________________________________________________________
	198	Float_t AliFMDAnaParameters::Get3MIPWeight(Int_t det, Char_t ring, Float_t eta) {
	199
	200	if(!fIsInit) {
	201	AliWarning("Not initialized yet. Call Init() to remedy");
	202	return 0;
	203	}
	204
	205	TH1F* hEnergyDist = GetEnergyDistribution(det,ring,eta);
	206	TF1* fitFunc = hEnergyDist->GetFunction("FMDfitFunc");
	207	if(!fitFunc) return 0;
	208	Float_t ThreeMIPweight = fitFunc->GetParameter(4);
	209
	210	if(ThreeMIPweight < 1e-05)
	211	ThreeMIPweight = 0;
	212
	213	Float_t TwoMIPweight = fitFunc->GetParameter(3);
	214
	215	if(TwoMIPweight < 1e-05)
	216	ThreeMIPweight = 0;
	217
	218	return ThreeMIPweight;
	219	}
	220	//____________________________________________________________________
	221	Int_t AliFMDAnaParameters::GetNetaBins() {
	222	return GetBackgroundCorrection(1,'I',0)->GetNbinsX();
	223
	224	}
	225	//____________________________________________________________________
	226	Float_t AliFMDAnaParameters::GetEtaMin() {
8dc823cc	227
5754671c	228	return GetBackgroundCorrection(1,'I',0)->GetXaxis()->GetXmin();
	229	}
	230	//____________________________________________________________________
	231	Float_t AliFMDAnaParameters::GetEtaMax() {
	232
	233	return GetBackgroundCorrection(1,'I',0)->GetXaxis()->GetXmax();
8dc823cc	234
5754671c	235	}
5754671c	236	//____________________________________________________________________
8dc823cc	237
d7346eed	238	TH2F* AliFMDAnaParameters::GetBackgroundCorrection(Int_t det,
	239	Char_t ring,
	240	Int_t vtxbin) {
b82e76e0	241
d7346eed	242	if(!fIsInit) {
	243	AliWarning("Not initialized yet. Call Init() to remedy");
	244	return 0;
	245	}
b82e76e0	246
	247
	248
	249	if(vtxbin > fBackground->GetNvtxBins()) {
d7346eed	250	AliWarning(Form("No background object for vertex bin %d", vtxbin));
	251	return 0;
	252	}
	253
b82e76e0	254	return fBackground->GetBgCorrection(det,ring,vtxbin);
d7346eed	255	}
f58a4769	256	//_____________________________________________________________________
78f6f750	257	Float_t AliFMDAnaParameters::GetMaxR(Char_t ring) {
	258	Float_t radius = 0;
	259	if(ring == 'I')
	260	radius = 17.2;
	261	else if(ring == 'O')
	262	radius = 28.0;
	263	else
	264	AliWarning("Unknown ring - must be I or O!");
	265
	266	return radius;
	267	}
	268	//_____________________________________________________________________
	269	Float_t AliFMDAnaParameters::GetMinR(Char_t ring) {
	270	Float_t radius = 0;
	271	if(ring == 'I')
	272	radius = 4.5213;
	273	else if(ring == 'O')
	274	radius = 15.4;
	275	else
	276	AliWarning("Unknown ring - must be I or O!");
	277
	278	return radius;
	279
	280	}
	281	//_____________________________________________________________________
	282	void AliFMDAnaParameters::SetCorners(Char_t ring) {
	283
	284	if(ring == 'I') {
	285	fCorner1.Set(4.9895, 15.3560);
	286	fCorner2.Set(1.8007, 17.2000);
	287	}
	288	else {
	289	fCorner1.Set(4.2231, 26.6638);
	290	fCorner2.Set(1.8357, 27.9500);
	291	}
	292
	293	}
	294	//_____________________________________________________________________
f58a4769	295	Float_t AliFMDAnaParameters::GetPhiFromSector(UShort_t det, Char_t ring, UShort_t sec)
	296	{
	297	Int_t nsec = (ring == 'I' ? 20 : 40);
	298	Float_t basephi = 0;
	299	if(det == 1)
	300	basephi = 1.72787594;
	301	if(det == 2 && ring == 'I')
	302	basephi = 0.15707963;
	303	if(det == 2 && ring == 'O')
	304	basephi = 0.078539818;
	305	if(det == 3 && ring == 'I')
	306	basephi = 2.984513044;
	307	if(det == 3 && ring == 'O')
	308	basephi = 3.06305289;
	309
	310	Float_t step = 2*TMath::Pi() / nsec;
	311	Float_t phi = 0;
	312	if(det == 3)
	313	phi = basephi - sec*step;
	314	else
	315	phi = basephi + sec*step;
	316
	317	if(phi < 0)
	318	phi = phi +2*TMath::Pi();
	319	if(phi > 2*TMath::Pi() )
	320	phi = phi - 2*TMath::Pi();
	321
	322	return phi;
	323	}
	324	//_____________________________________________________________________
	325	Float_t AliFMDAnaParameters::GetEtaFromStrip(UShort_t det, Char_t ring, UShort_t sec, UShort_t strip, Float_t zvtx)
	326	{
78f6f750	327	// AliFMDRing fmdring(ring);
	328	// fmdring.Init();
	329	Float_t rad = GetMaxR(ring)-GetMinR(ring);
	330	Float_t Nstrips = (ring == 'I' ? 512 : 256);
	331	Float_t segment = rad / Nstrips;
	332	Float_t r = GetMinR(ring) + segment*strip;
f58a4769	333	Float_t z = 0;
	334	Int_t hybrid = sec / 2;
	335
	336	if(det == 1) {
	337	if(!(hybrid%2)) z = 320.266; else z = 319.766;
	338	}
	339	if(det == 2 && ring == 'I' ) {
	340	if(!(hybrid%2)) z = 83.666; else z = 83.166;
	341	}
	342	if(det == 2 && ring == 'O' ) {
	343	if(!(hybrid%2)) z = 74.966; else z = 75.466;
	344	}
	345	if(det == 3 && ring == 'I' ) {
	346	if(!(hybrid%2)) z = -63.066; else z = -62.566;
	347	}
	348	if(det == 3 && ring == 'O' ) {
	349	if(!(hybrid%2)) z = -74.966; else z = -75.466;
	350	}
	351
	352	//std::cout<<det<<" "<<ring<<" "<<sec<<" "<<hybrid<<" "<<z<<std::endl;
	353
	354	// Float_t r = TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
	355	Float_t theta = TMath::ATan2(r,z-zvtx);
	356	Float_t eta = -1TMath::Log(TMath::Tan(0.5theta));
	357
	358	return eta;
78f6f750	359	}/*
d7346eed	360	//____________________________________________________________________
	361	AliCDBEntry* AliFMDAnaParameters::GetEntry(const char* path, Bool_t fatal) const
	362	{
	363	// Get an entry from the CDB or via preprocessor
	364	AliCDBEntry* entry = 0;
	365	AliCDBManager* cdb = AliCDBManager::Instance();
	366	entry = cdb->Get(path);
	367
	368	if (!entry) {
	369	TString msg(Form("No %s found in CDB, perhaps you need to "
	370	"use AliFMDCalibFaker?", path));
	371	if (fatal) { AliFatal(msg.Data()); }
	372	else AliLog::Message(AliLog::kWarning, msg.Data(), "FMD",
	373	"AliFMDParameters", "GetEntry", __FILE__,
	374	__LINE__);
	375	return 0;
	376	}
	377	return entry;
	378	}
78f6f750	379	*/
	380	//____________________________________________________________________
	381	Float_t
	382	AliFMDAnaParameters::GetStripLength(Char_t ring, UShort_t strip)
	383	{
	384	//AliFMDRing fmdring(ring);
	385	// fmdring.Init();
	386
	387	Float_t rad = GetMaxR(ring)-GetMinR(ring);
	388	Float_t Nstrips = (ring == 'I' ? 512 : 256);
	389	Float_t segment = rad / Nstrips;
	390
	391	//TVector2* corner1 = fmdring.GetVertex(2);
	392	// TVector2* corner2 = fmdring.GetVertex(3);
	393
	394	SetCorners(ring);
	395	/*
	396	std::cout<<GetMaxR(ring)<<" "<<fmdring.GetMaxR()<<std::endl;
	397	std::cout<<GetMinR(ring)<<" "<<fmdring.GetMinR()<<std::endl;
	398	std::cout<<corner1->X()<<" "<<fCorner1.X()<<std::endl;
	399	std::cout<<corner2->X()<<" "<<fCorner2.X()<<std::endl;
	400	std::cout<<corner1->Y()<<" "<<fCorner1.Y()<<std::endl;
	401	std::cout<<corner2->Y()<<" "<<fCorner2.Y()<<std::endl;*/
	402	Float_t slope = (fCorner1.Y() - fCorner2.Y()) / (fCorner1.X() - fCorner2.X());
	403	Float_t constant = (fCorner2.Y()fCorner1.X()-(fCorner2.X()fCorner1.Y())) / (fCorner1.X() - fCorner2.X());
	404	Float_t radius = GetMinR(ring) + strip*segment;
	405
	406	Float_t d = TMath::Power(TMath::Abs(radius*slope),2) + TMath::Power(radius,2) - TMath::Power(constant,2);
	407
	408	Float_t arclength = GetBaseStripLength(ring,strip);
	409	if(d>0) {
	410
	411	Float_t x = (-1TMath::Sqrt(d) -slopeconstant) / (1+TMath::Power(slope,2));
	412	Float_t y = slope*x + constant;
	413	Float_t theta = TMath::ATan2(x,y);
	414
	415	if(x < fCorner1.X() && y > fCorner1.Y()) {
	416	arclength = radius*theta; //One sector since theta is by definition half-hybrid
	417
	418	}
	419
	420	}
	421
	422	return arclength;
	423
	424
	425	}
	426	//____________________________________________________________________
	427	Float_t
	428	AliFMDAnaParameters::GetBaseStripLength(Char_t ring, UShort_t strip)
	429	{
	430	// AliFMDRing fmdring(ring);
	431	// fmdring.Init();
	432	Float_t rad = GetMaxR(ring)-GetMinR(ring);
	433	Float_t Nstrips = (ring == 'I' ? 512 : 256);
	434	Float_t Nsec = (ring == 'I' ? 20 : 40);
	435	Float_t segment = rad / Nstrips;
	436	Float_t basearc = 2TMath::Pi() / (0.5Nsec); // One hybrid: 36 degrees inner, 18 outer
	437	Float_t radius = GetMinR(ring) + strip*segment;
	438	Float_t basearclength = 0.5basearc radius; // One sector
	439
	440	return basearclength;
	441	}
d7346eed	442	//____________________________________________________________________
	443	//
	444	// EOF
	445	//