[u/mrichter/AliRoot.git] / PWGLF / FORWARD / analysis2 / AliForwardMCFlowTaskQC.cxx

//
// Calculate flow on MC data in the forward and central regions using the Q cumulants method.
//
// Inputs:
//  - AliAODEvent
//
// Outputs:
//  - AnalysisResults.root
//
#include "AliForwardMCFlowTaskQC.h"
#include "AliAODMCParticle.h"
#include "AliAODMCHeader.h"
#include "TGraph.h"
#include "TF1.h"
#include "TProfile2D.h"
#include "AliAODEvent.h"
#include "AliAODForwardMult.h"
#include "AliAODCentralMult.h"
#include "AliGenEventHeader.h"

ClassImp(AliForwardMCFlowTaskQC)
#if 0
;
#endif
//_____________________________________________________________________
AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC() 
  : AliForwardFlowTaskQC(), 
    fBinsFMDTR(),          // List of FMDTR analysis objects
    fBinsSPDTR(),          // List of SPDTR analysis objects
    fBinsMC(),             // List of MC truth analysis objects
    fdNdedpMC(),           // MC truth d^2N/detadphi histogram
    fWeights(),            // Flow weights
    fImpactParToCent(),    // Impact parameter to centrality graph
    fUseImpactPar(0),      // Use impact par for centrality
    fFMDMinEta(-6),        // FMD min eta coverage for this vtx
    fFMDMaxEta(6),         // FMD max eta coverage for this vtx
    fAddFlow(0),           // Add flow to MC truth
    fAddType(0),           // Add type of flow to MC truth
    fAddOrder(0)           // Add order of flow to MC truth        
{} 
  //
  // Default Constructor
  //
//_____________________________________________________________________
AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC(const char* name) 
  : AliForwardFlowTaskQC(name),
    fBinsFMDTR(),          // List of FMDTR analysis objects
    fBinsSPDTR(),          // List of SPDTR analysis objects
    fBinsMC(),             // List of MC truth analysis objects
    fdNdedpMC(),           // MC truth d^2N/detadphi histogram
    fWeights(),            // Flow weights
    fImpactParToCent(),    // Impact parameter to centrality graph
    fUseImpactPar(0),      // Use impact par for centrality
    fFMDMinEta(-6),        // FMD min eta coverage for this vtx
    fFMDMaxEta(6),         // FMD max eta coverage for this vtx
    fAddFlow(0),           // Add flow to MC truth
    fAddType(0),           // Add type of flow to MC truth
    fAddOrder(0)           // Add order of flow to MC truth        
{ 
  // 
  // Constructor
  // Parameters:
  //  name: Name of task
  //
  
  //  Double_t impactParam[] = {0.,1.75,4.225,5.965,7.765,9.215,10.46,
  //                            11.565,12.575,13.515,16.679};
  //  Double_t centrality[] = {0.,2.5,7.5,15,25,35,45,55,65,75,90};
  Double_t impactParam[] = { 0.00,  3.72,  5.23,  7.31,  8.88, 10.20, 
			    11.38, 12.47, 13.50, 14.51, 16.679};
  Double_t centrality[]  = { 0.,    5.,   10.,   20.,   30.,   40., 
			    50.,   60.,   70.,   80.,  100.};

  Int_t nPoints = sizeof(impactParam)/sizeof(Double_t);
  fImpactParToCent = new TGraph(nPoints, impactParam, centrality);

}
//_____________________________________________________________________
AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC(const AliForwardMCFlowTaskQC& o) 
  : AliForwardFlowTaskQC(o), 
    fBinsFMDTR(),                          // List of FMDTR analysis objects
    fBinsSPDTR(),                          // List of SPDTR analysis objects
    fBinsMC(),                             // List of MC truth analysis objects
    fdNdedpMC(o.fdNdedpMC),                // MC truth d^2N/detadphi histogram
    fWeights(o.fWeights),                  // Flow weights
    fImpactParToCent(o.fImpactParToCent),  // Impact parameter to centrality
    fUseImpactPar(o.fUseImpactPar),        // Use impact par for centrality
    fFMDMinEta(o.fFMDMinEta),              // FMD min eta coverage for this vtx
    fFMDMaxEta(o.fFMDMaxEta),              // FMD max eta coverage for this vtx
    fAddFlow(o.fAddFlow),                  // Add flow to MC truth
    fAddType(o.fAddType),                  // Add type of flow to MC truth
    fAddOrder(o.fAddOrder)                 // Add order of flow to MC truth
{
  //
  // Copy Constructor
  //
} 
//_____________________________________________________________________
AliForwardMCFlowTaskQC&
AliForwardMCFlowTaskQC::operator=(const AliForwardMCFlowTaskQC& o)
{
  // 
  // Assignment operator
  // Parameters:
  //    o Object to copy from 
  //
  if (&o == this) return *this;
  fdNdedpMC        = o.fdNdedpMC;
  fWeights         = o.fWeights;
  fImpactParToCent = o.fImpactParToCent;
  fUseImpactPar    = o.fUseImpactPar;
  fFMDMinEta       = o.fFMDMinEta;
  fFMDMaxEta       = o.fFMDMaxEta;
  fAddFlow         = o.fAddFlow;
  fAddType         = o.fAddType;
  fAddOrder        = o.fAddOrder;
  return *this;
}
//_____________________________________________________________________
void AliForwardMCFlowTaskQC::InitVertexBins()
{
  //
  // Initiate VertexBin lists
  //
  AliForwardFlowTaskQC::InitVertexBins();

  Int_t moment = 0;
  for(UShort_t n = 0; n < fV.GetSize(); n++) {
    moment = fV.At(n);
    for (Int_t v = 1; v <= fVtxAxis->GetNbins(); v++) {
      Int_t vL = Int_t(fVtxAxis->GetBinLowEdge(v));
      Int_t vH = Int_t(fVtxAxis->GetBinUpEdge(v));
      fBinsFMDTR.Add(new VertexBin(vL, vH, moment, "FMDTR", fFlowFlags, fFMDCut, fEtaGap));
      fBinsSPDTR.Add(new VertexBin(vL, vH, moment, "SPDTR", fFlowFlags, fSPDCut, fEtaGap));
      fBinsMC.Add(new VertexBin(vL, vH, moment, "MC", fFlowFlags, -1, fEtaGap));
    }
  }
}
//_____________________________________________________________________
void AliForwardMCFlowTaskQC::InitHists()
{
  //
  // Initiate diagnostics hists and add to outputlist
  //
  AliForwardFlowTaskQC::InitHists();

  fdNdedpMC = TH2D(Form("fdNdedpMC%s", ((fFlowFlags & kEtaGap) ? "_etaGap" : "")),
		   Form("fdNdedpMC%s", ((fFlowFlags & kEtaGap) ? "_etaGap" : "")),
		   48, -6., 6., 200, 0., 2.*TMath::Pi());
  fdNdedpMC.Sumw2();

  TIter nextFMDTR(&fBinsFMDTR);
  VertexBin* bin = 0;
  while ((bin = static_cast<VertexBin*>(nextFMDTR()))) {
    bin->AddOutput(fSumList);
  }
  TIter nextSPDTR(&fBinsSPDTR);
  while ((bin = static_cast<VertexBin*>(nextSPDTR()))) {
    bin->AddOutput(fSumList);
  }
  TIter nextMC(&fBinsMC);
  while ((bin = static_cast<VertexBin*>(nextMC()))) {
    bin->AddOutput(fSumList);
  }

  TList* wList = new TList();
  wList->SetName("FlowWeights");
  fWeights.Init(wList);
  fSumList->Add(wList);

}
//_____________________________________________________________________
Bool_t AliForwardMCFlowTaskQC::Analyze() 
{
  // 
  // Load FMD and SPD MC objects from aod tree and call the cumulants 
  // calculation for the correct vertexbin
  //
  if (!AliForwardFlowTaskQC::Analyze()) return kFALSE;

  // Run analysis on trackrefs from FMD and SPD
  const AliAODForwardMult* aodfmult = 
    static_cast<AliAODForwardMult*>(fAOD->FindListObject("ForwardMC"));
  const AliAODCentralMult* aodcmult = 
    static_cast<AliAODCentralMult*>(fAOD->FindListObject("CentralClustersMC"));
  Int_t vtx = fVtxAxis->FindBin(fVtx)-1;
  
  // if objects are present, get histograms
  if (aodfmult) {
    const TH2D& fmdTRdNdetadphi = aodfmult->GetHistogram();
    if ((fFlowFlags & kEtaGap)) {
      FillVtxBinListEtaGap(fBinsFMDTR, fmdTRdNdetadphi, fmdTRdNdetadphi, vtx);
    } else {
      FillVtxBinList(fBinsFMDTR, fmdTRdNdetadphi, vtx);
    }
    
    if (aodcmult) {
      const TH2D& spdTRdNdetadphi = aodcmult->GetHistogram();
      if ((fFlowFlags & kEtaGap)) {
	FillVtxBinListEtaGap(fBinsSPDTR, fmdTRdNdetadphi, spdTRdNdetadphi, vtx);
      } else {
	FillVtxBinList(fBinsSPDTR, spdTRdNdetadphi, vtx);
      }
    }
  }
  // Run analysis on MC branch
  if (!LoopAODMC()) return kFALSE;
  if ((fFlowFlags & kEtaGap)) {
    FillVtxBinListEtaGap(fBinsMC, fdNdedpMC, fdNdedpMC, vtx);
  } else {
    FillVtxBinList(fBinsMC, fdNdedpMC, vtx);
  }

  return kTRUE;
}
//_____________________________________________________________________
void AliForwardMCFlowTaskQC::Finalize() 
{
  //
  // Finalize command, called by Terminate()
  //
  AliForwardFlowTaskQC::Finalize();

  EndVtxBinList(fBinsFMDTR);
  EndVtxBinList(fBinsSPDTR);
  EndVtxBinList(fBinsMC);

  return;
}
//_____________________________________________________________________
Bool_t AliForwardMCFlowTaskQC::CheckTrigger(const AliAODForwardMult* aodfm) const 
{
  //
  // Function to look for a trigger string in the event.
  //
  // Parameters: 
  //  AliAODForwardMult: forward mult object with trigger and vertex info
  //
  // Returns true if B trigger is present - for some reason this is the one we use in MC
  //
  return aodfm->IsTriggerBits(AliAODForwardMult::kB);
}
// _____________________________________________________________________
Bool_t AliForwardMCFlowTaskQC::GetCentrality(const AliAODForwardMult* aodfm)
{
  // 
  // Function to use centrality parametrization from impact parameter
  // if flag is not set call AliForwardFlowTaskQC::GetCentrality
  //
  // Parameters:
  //  AliAODForwardMult: forward mult object with trigger and vertex info
  //
  // Returns true when centrality is set.
  //
  if (fUseImpactPar) {
    fCent = GetCentFromB();
    if (fCent != -1) return kTRUE;
  }
  return AliForwardFlowTaskQC::GetCentrality(aodfm);
}
//_____________________________________________________________________
void AliForwardMCFlowTaskQC::GetFMDLimits()
{

  const AliAODForwardMult* aodfmult = 
    static_cast<AliAODForwardMult*>(fAOD->FindListObject("Forward"));
  const TH2D& h = aodfmult->GetHistogram();

  for (Int_t e = 1; ; e++) {
    if (h.GetBinContent(e, 0) != 0) { 
      fFMDMinEta = h.GetXaxis()->GetBinLowEdge(e);
      break;
    }
  }
  for (Int_t e = h.GetNbinsX(); ; e--) {
    if (h.GetBinContent(e, 0) != 0) { 
      fFMDMaxEta = h.GetXaxis()->GetBinLowEdge(e);
      break;
    }
  }

  return;
}
//_____________________________________________________________________
Bool_t AliForwardMCFlowTaskQC::LoopAODMC()  
{
  // 
  // Loop over AliAODParticle branch and fill d^2N/detadphi-histograms.
  // Add flow if set to do so in AddTask function
  //
  fdNdedpMC.Reset();
  GetFMDLimits();

  //retreive MC particles from event
  TClonesArray* mcArray = 
    static_cast<TClonesArray*>(fAOD->FindListObject(
                               AliAODMCParticle::StdBranchName()));
  if(!mcArray){
    AliWarning("No MC array found in AOD. Try making it again.");
    return kFALSE;
  }

  AliAODMCHeader* header = 
    dynamic_cast<AliAODMCHeader*>(fAOD->FindListObject(
                                  AliAODMCHeader::StdBranchName()));
  if (!header) 
    AliWarning("No header file found.");
  
  // Double_t rp = header->GetReactionPlaneAngle();

  Int_t ntracks = mcArray->GetEntriesFast();
  // TODO: Make this bit smarter...
  if (header->GetNCocktailHeaders() > 1) {
    ntracks = header->GetCocktailHeader(0)->NProduced();
  }

  UShort_t flowFlags = 0;
  if (fAddFlow.Length() > 1) {
    if (fAddFlow.Contains("pt"))   flowFlags |= AliForwardFlowWeights::kPt;
    if (fAddFlow.Contains("pid"))  flowFlags |= AliForwardFlowWeights::kPt;
    if (fAddFlow.Contains("eta"))  flowFlags |= AliForwardFlowWeights::kEta;
    if (fAddFlow.Contains("cent")) flowFlags |= AliForwardFlowWeights::kCent;
  }
  // Double_t b = header->GetImpactParameter();

  // Track loop: chek how many particles will be accepted
  Double_t weight = 0;
  for (Int_t it = 0; it < ntracks; it++) {
    weight = 1;
    AliAODMCParticle* particle = (AliAODMCParticle*)mcArray->At(it);
    if (!particle) {
      AliError(Form("Could not receive track %d", it));
      continue;
    }
    if (!particle->IsPrimary()) continue;
    if (particle->Charge() == 0) continue;
    //Double_t pT = particle->Pt();
    Double_t eta = particle->Eta();
    Double_t phi = particle->Phi();
    if (eta >= fFMDMinEta && eta <= fFMDMaxEta) {
      // Add flow if it is in the argument
      /* FLOW WEIGHTS DISABLED IN THE VERSION - COMING BACK SOON
      if (flowFlags != 0) { 
//	weight = fWeights.CalcWeight(eta, pT, phi, particle->PdgCode(), 
//				     rp, fCent, fAddType, fAddOrder, 
//				     flowFlags) + 1;
        weight = fWeights.CalcWeight(eta, pT, phi, particle->PdgCode(),
                                    rp, b); 
//      Printf("%f", weight);
      }*/
        fdNdedpMC.Fill(eta, phi, weight);
    }
  }
  Int_t sBin = fdNdedpMC.GetXaxis()->FindBin(fFMDMinEta);
  Int_t eBin = fdNdedpMC.GetXaxis()->FindBin(fFMDMaxEta);
  for ( ; sBin < eBin; sBin++) fdNdedpMC.SetBinContent(sBin, 0, 1.);

  return kTRUE;
}
//_____________________________________________________________________
Double_t AliForwardMCFlowTaskQC::GetCentFromB() const
{
  //
  // Get centrality from MC impact parameter.
  //
  Double_t cent = -1.;
  AliAODMCHeader* header = 
    static_cast<AliAODMCHeader*>(fAOD->FindListObject(AliAODMCHeader::
						      StdBranchName()));
  if (!header) return cent;
  Double_t b = header->GetImpactParameter();

  cent = fImpactParToCent->Eval(b);

  return cent;
}
//_____________________________________________________________________
void AliForwardMCFlowTaskQC::PrintFlowSetup() const  
{
  //
  // Print the setup of the flow task
  //
  Printf("AliForwardMCFlowTaskQC::Print");
  Printf("Number of bins in vertex axis:\t%d", fVtxAxis->GetNbins());
  Printf("Range of vertex axis         :\t[%3.1f,%3.1f]", 
			  fVtxAxis->GetXmin(), fVtxAxis->GetXmax());
  printf("Doing flow analysis for      :\t");
  for (Int_t n  = 0; n < fV.GetSize(); n++) printf("v%d ", fV.At(n));
  printf("\n");
  Printf("Satellite vertex flag           :\t%s", ((fFlowFlags & kSatVtx) ? 
						   "true" : "false"));
  Printf("Symmetrize ref. flow wrt eta = 0:\t%s", ((fFlowFlags & kSymEta) ? 
						   "true" : "false"));
  Printf("Use an eta-gap for ref. flow    :\t%s", ((fFlowFlags & kEtaGap) ? 
						   "true" : "false"));
  Printf("FMD sigma cut:               :\t%f", fFMDCut);
  Printf("SPD sigma cut:               :\t%f", fSPDCut);
  if ((fFlowFlags & kEtaGap)) 
    Printf("Eta gap:                     :\t%f", fEtaGap);
}
//_____________________________________________________________________
//
//
// EOF
Commit	Line	Data
2b556440	1	//
	2	// Calculate flow on MC data in the forward and central regions using the Q cumulants method.
	3	//
	4	// Inputs:
	5	// - AliAODEvent
	6	//
	7	// Outputs:
	8	// - AnalysisResults.root
	9	//
	10	#include "AliForwardMCFlowTaskQC.h"
	11	#include "AliAODMCParticle.h"
	12	#include "AliAODMCHeader.h"
	13	#include "TGraph.h"
	14	#include "TF1.h"
	15	#include "TProfile2D.h"
	16	#include "AliAODEvent.h"
	17	#include "AliAODForwardMult.h"
	18	#include "AliAODCentralMult.h"
008eda2b	19	#include "AliGenEventHeader.h"
2b556440	20
2b556440	21	ClassImp(AliForwardMCFlowTaskQC)
936b0a6c	22	#if 0
	23	;
	24	#endif
2b556440	25	//_____________________________________________________________________
936b0a6c	26	AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC()
	27	: AliForwardFlowTaskQC(),
	28	fBinsFMDTR(), // List of FMDTR analysis objects
	29	fBinsSPDTR(), // List of SPDTR analysis objects
	30	fBinsMC(), // List of MC truth analysis objects
	31	fdNdedpMC(), // MC truth d^2N/detadphi histogram
	32	fWeights(), // Flow weights
	33	fImpactParToCent(), // Impact parameter to centrality graph
	34	fUseImpactPar(0), // Use impact par for centrality
008eda2b	35	fFMDMinEta(-6), // FMD min eta coverage for this vtx
008eda2b	36	fFMDMaxEta(6), // FMD max eta coverage for this vtx
936b0a6c	37	fAddFlow(0), // Add flow to MC truth
	38	fAddType(0), // Add type of flow to MC truth
	39	fAddOrder(0) // Add order of flow to MC truth
	40	{}
2b556440	41	//
	42	// Default Constructor
	43	//
	44	//_____________________________________________________________________
936b0a6c	45	AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC(const char* name)
	46	: AliForwardFlowTaskQC(name),
	47	fBinsFMDTR(), // List of FMDTR analysis objects
	48	fBinsSPDTR(), // List of SPDTR analysis objects
	49	fBinsMC(), // List of MC truth analysis objects
	50	fdNdedpMC(), // MC truth d^2N/detadphi histogram
	51	fWeights(), // Flow weights
	52	fImpactParToCent(), // Impact parameter to centrality graph
	53	fUseImpactPar(0), // Use impact par for centrality
008eda2b	54	fFMDMinEta(-6), // FMD min eta coverage for this vtx
008eda2b	55	fFMDMaxEta(6), // FMD max eta coverage for this vtx
936b0a6c	56	fAddFlow(0), // Add flow to MC truth
	57	fAddType(0), // Add type of flow to MC truth
	58	fAddOrder(0) // Add order of flow to MC truth
2b556440	59	{
	60	//
	61	// Constructor
	62	// Parameters:
	63	// name: Name of task
	64	//
2b556440	65
936b0a6c	66	// Double_t impactParam[] = {0.,1.75,4.225,5.965,7.765,9.215,10.46,
	67	// 11.565,12.575,13.515,16.679};
	68	// Double_t centrality[] = {0.,2.5,7.5,15,25,35,45,55,65,75,90};
	69	Double_t impactParam[] = { 0.00, 3.72, 5.23, 7.31, 8.88, 10.20,
	70	11.38, 12.47, 13.50, 14.51, 16.679};
	71	Double_t centrality[] = { 0., 5., 10., 20., 30., 40.,
	72	50., 60., 70., 80., 100.};
2b556440	73
	74	Int_t nPoints = sizeof(impactParam)/sizeof(Double_t);
	75	fImpactParToCent = new TGraph(nPoints, impactParam, centrality);
	76
	77	}
	78	//_____________________________________________________________________
936b0a6c	79	AliForwardMCFlowTaskQC::AliForwardMCFlowTaskQC(const AliForwardMCFlowTaskQC& o)
	80	: AliForwardFlowTaskQC(o),
	81	fBinsFMDTR(), // List of FMDTR analysis objects
	82	fBinsSPDTR(), // List of SPDTR analysis objects
	83	fBinsMC(), // List of MC truth analysis objects
	84	fdNdedpMC(o.fdNdedpMC), // MC truth d^2N/detadphi histogram
	85	fWeights(o.fWeights), // Flow weights
	86	fImpactParToCent(o.fImpactParToCent), // Impact parameter to centrality
	87	fUseImpactPar(o.fUseImpactPar), // Use impact par for centrality
008eda2b	88	fFMDMinEta(o.fFMDMinEta), // FMD min eta coverage for this vtx
008eda2b	89	fFMDMaxEta(o.fFMDMaxEta), // FMD max eta coverage for this vtx
936b0a6c	90	fAddFlow(o.fAddFlow), // Add flow to MC truth
	91	fAddType(o.fAddType), // Add type of flow to MC truth
	92	fAddOrder(o.fAddOrder) // Add order of flow to MC truth
	93	{
2b556440	94	//
	95	// Copy Constructor
	96	//
936b0a6c	97	}
2b556440	98	//_____________________________________________________________________
	99	AliForwardMCFlowTaskQC&
	100	AliForwardMCFlowTaskQC::operator=(const AliForwardMCFlowTaskQC& o)
	101	{
	102	//
	103	// Assignment operator
	104	// Parameters:
	105	// o Object to copy from
	106	//
eeb6c967	107	if (&o == this) return *this;
2b556440	108	fdNdedpMC = o.fdNdedpMC;
936b0a6c	109	fWeights = o.fWeights;
2b556440	110	fImpactParToCent = o.fImpactParToCent;
4b5b52b7	111	fUseImpactPar = o.fUseImpactPar;
008eda2b	112	fFMDMinEta = o.fFMDMinEta;
008eda2b	113	fFMDMaxEta = o.fFMDMaxEta;
2b556440	114	fAddFlow = o.fAddFlow;
	115	fAddType = o.fAddType;
	116	fAddOrder = o.fAddOrder;
	117	return *this;
	118	}
	119	//_____________________________________________________________________
	120	void AliForwardMCFlowTaskQC::InitVertexBins()
	121	{
	122	//
	123	// Initiate VertexBin lists
	124	//
	125	AliForwardFlowTaskQC::InitVertexBins();
	126
68589651	127	Int_t moment = 0;
	128	for(UShort_t n = 0; n < fV.GetSize(); n++) {
	129	moment = fV.At(n);
	130	for (Int_t v = 1; v <= fVtxAxis->GetNbins(); v++) {
a7989168	131	Int_t vL = Int_t(fVtxAxis->GetBinLowEdge(v));
a7989168	132	Int_t vH = Int_t(fVtxAxis->GetBinUpEdge(v));
68589651	133	fBinsFMDTR.Add(new VertexBin(vL, vH, moment, "FMDTR", fFlowFlags, fFMDCut, fEtaGap));
	134	fBinsSPDTR.Add(new VertexBin(vL, vH, moment, "SPDTR", fFlowFlags, fSPDCut, fEtaGap));
	135	fBinsMC.Add(new VertexBin(vL, vH, moment, "MC", fFlowFlags, -1, fEtaGap));
2b556440	136	}
2b556440	137	}
2b556440	138	}
	139	//_____________________________________________________________________
	140	void AliForwardMCFlowTaskQC::InitHists()
	141	{
	142	//
	143	// Initiate diagnostics hists and add to outputlist
	144	//
	145	AliForwardFlowTaskQC::InitHists();
	146
68589651	147	fdNdedpMC = TH2D(Form("fdNdedpMC%s", ((fFlowFlags & kEtaGap) ? "_etaGap" : "")),
	148	Form("fdNdedpMC%s", ((fFlowFlags & kEtaGap) ? "_etaGap" : "")),
	149	48, -6., 6., 200, 0., 2.*TMath::Pi());
	150	fdNdedpMC.Sumw2();
	151
2b556440	152	TIter nextFMDTR(&fBinsFMDTR);
	153	VertexBin* bin = 0;
	154	while ((bin = static_cast<VertexBin*>(nextFMDTR()))) {
	155	bin->AddOutput(fSumList);
	156	}
	157	TIter nextSPDTR(&fBinsSPDTR);
	158	while ((bin = static_cast<VertexBin*>(nextSPDTR()))) {
	159	bin->AddOutput(fSumList);
	160	}
	161	TIter nextMC(&fBinsMC);
	162	while ((bin = static_cast<VertexBin*>(nextMC()))) {
	163	bin->AddOutput(fSumList);
	164	}
	165
3112bd03	166	TList* wList = new TList();
	167	wList->SetName("FlowWeights");
	168	fWeights.Init(wList);
	169	fSumList->Add(wList);
	170
2b556440	171	}
	172	//_____________________________________________________________________
	173	Bool_t AliForwardMCFlowTaskQC::Analyze()
	174	{
	175	//
	176	// Load FMD and SPD MC objects from aod tree and call the cumulants
	177	// calculation for the correct vertexbin
	178	//
	179	if (!AliForwardFlowTaskQC::Analyze()) return kFALSE;
	180
	181	// Run analysis on trackrefs from FMD and SPD
936b0a6c	182	const AliAODForwardMult* aodfmult =
	183	static_cast<AliAODForwardMult*>(fAOD->FindListObject("ForwardMC"));
	184	const AliAODCentralMult* aodcmult =
	185	static_cast<AliAODCentralMult*>(fAOD->FindListObject("CentralClustersMC"));
d420e249	186	Int_t vtx = fVtxAxis->FindBin(fVtx)-1;
2b556440	187
4b5b52b7	188	// if objects are present, get histograms
d420e249	189	if (aodfmult) {
d420e249	190	const TH2D& fmdTRdNdetadphi = aodfmult->GetHistogram();
68589651	191	if ((fFlowFlags & kEtaGap)) {
	192	FillVtxBinListEtaGap(fBinsFMDTR, fmdTRdNdetadphi, fmdTRdNdetadphi, vtx);
	193	} else {
	194	FillVtxBinList(fBinsFMDTR, fmdTRdNdetadphi, vtx);
	195	}
008eda2b	196
68589651	197	if (aodcmult) {
	198	const TH2D& spdTRdNdetadphi = aodcmult->GetHistogram();
	199	if ((fFlowFlags & kEtaGap)) {
	200	FillVtxBinListEtaGap(fBinsSPDTR, fmdTRdNdetadphi, spdTRdNdetadphi, vtx);
	201	} else {
	202	FillVtxBinList(fBinsSPDTR, spdTRdNdetadphi, vtx);
	203	}
	204	}
d420e249	205	}
2b556440	206	// Run analysis on MC branch
2b556440	207	if (!LoopAODMC()) return kFALSE;
68589651	208	if ((fFlowFlags & kEtaGap)) {
	209	FillVtxBinListEtaGap(fBinsMC, fdNdedpMC, fdNdedpMC, vtx);
	210	} else {
	211	FillVtxBinList(fBinsMC, fdNdedpMC, vtx);
	212	}
2b556440	213
	214	return kTRUE;
	215	}
	216	//_____________________________________________________________________
	217	void AliForwardMCFlowTaskQC::Finalize()
	218	{
	219	//
	220	// Finalize command, called by Terminate()
	221	//
	222	AliForwardFlowTaskQC::Finalize();
	223
4b5b52b7	224	EndVtxBinList(fBinsFMDTR);
	225	EndVtxBinList(fBinsSPDTR);
	226	EndVtxBinList(fBinsMC);
2b556440	227
4b5b52b7	228	return;
	229	}
	230	//_____________________________________________________________________
d420e249	231	Bool_t AliForwardMCFlowTaskQC::CheckTrigger(const AliAODForwardMult* aodfm) const
	232	{
	233	//
	234	// Function to look for a trigger string in the event.
	235	//
	236	// Parameters:
	237	// AliAODForwardMult: forward mult object with trigger and vertex info
	238	//
	239	// Returns true if B trigger is present - for some reason this is the one we use in MC
	240	//
	241	return aodfm->IsTriggerBits(AliAODForwardMult::kB);
	242	}
	243	// _____________________________________________________________________
4b5b52b7	244	Bool_t AliForwardMCFlowTaskQC::GetCentrality(const AliAODForwardMult* aodfm)
	245	{
	246	//
	247	// Function to use centrality parametrization from impact parameter
	248	// if flag is not set call AliForwardFlowTaskQC::GetCentrality
	249	//
	250	// Parameters:
	251	// AliAODForwardMult: forward mult object with trigger and vertex info
	252	//
	253	// Returns true when centrality is set.
	254	//
	255	if (fUseImpactPar) {
	256	fCent = GetCentFromB();
d420e249	257	if (fCent != -1) return kTRUE;
2b556440	258	}
d420e249	259	return AliForwardFlowTaskQC::GetCentrality(aodfm);
2b556440	260	}
2b556440	261	//_____________________________________________________________________
008eda2b	262	void AliForwardMCFlowTaskQC::GetFMDLimits()
	263	{
	264
	265	const AliAODForwardMult* aodfmult =
	266	static_cast<AliAODForwardMult*>(fAOD->FindListObject("Forward"));
	267	const TH2D& h = aodfmult->GetHistogram();
	268
	269	for (Int_t e = 1; ; e++) {
	270	if (h.GetBinContent(e, 0) != 0) {
	271	fFMDMinEta = h.GetXaxis()->GetBinLowEdge(e);
	272	break;
	273	}
	274	}
	275	for (Int_t e = h.GetNbinsX(); ; e--) {
	276	if (h.GetBinContent(e, 0) != 0) {
	277	fFMDMaxEta = h.GetXaxis()->GetBinLowEdge(e);
	278	break;
	279	}
	280	}
	281
	282	return;
	283	}
	284	//_____________________________________________________________________
2b556440	285	Bool_t AliForwardMCFlowTaskQC::LoopAODMC()
	286	{
	287	//
	288	// Loop over AliAODParticle branch and fill d^2N/detadphi-histograms.
	289	// Add flow if set to do so in AddTask function
68589651	290	//
2b556440	291	fdNdedpMC.Reset();
008eda2b	292	GetFMDLimits();
2b556440	293
2b556440	294	//retreive MC particles from event
936b0a6c	295	TClonesArray* mcArray =
d420e249	296	static_cast<TClonesArray*>(fAOD->FindListObject(
d420e249	297	AliAODMCParticle::StdBranchName()));
2b556440	298	if(!mcArray){
d420e249	299	AliWarning("No MC array found in AOD. Try making it again.");
2b556440	300	return kFALSE;
	301	}
	302
936b0a6c	303	AliAODMCHeader* header =
d420e249	304	dynamic_cast<AliAODMCHeader*>(fAOD->FindListObject(
d420e249	305	AliAODMCHeader::StdBranchName()));
936b0a6c	306	if (!header)
2b556440	307	AliWarning("No header file found.");
008eda2b	308
9c686cb4	309	// Double_t rp = header->GetReactionPlaneAngle();
2b556440	310
2b556440	311	Int_t ntracks = mcArray->GetEntriesFast();
008eda2b	312	// TODO: Make this bit smarter...
	313	if (header->GetNCocktailHeaders() > 1) {
	314	ntracks = header->GetCocktailHeader(0)->NProduced();
	315	}
2b556440	316
936b0a6c	317	UShort_t flowFlags = 0;
	318	if (fAddFlow.Length() > 1) {
	319	if (fAddFlow.Contains("pt")) flowFlags \|= AliForwardFlowWeights::kPt;
	320	if (fAddFlow.Contains("pid")) flowFlags \|= AliForwardFlowWeights::kPt;
	321	if (fAddFlow.Contains("eta")) flowFlags \|= AliForwardFlowWeights::kEta;
	322	if (fAddFlow.Contains("cent")) flowFlags \|= AliForwardFlowWeights::kCent;
	323	}
9c686cb4	324	// Double_t b = header->GetImpactParameter();
936b0a6c	325
2b556440	326	// Track loop: chek how many particles will be accepted
	327	Double_t weight = 0;
	328	for (Int_t it = 0; it < ntracks; it++) {
	329	weight = 1;
	330	AliAODMCParticle* particle = (AliAODMCParticle*)mcArray->At(it);
	331	if (!particle) {
	332	AliError(Form("Could not receive track %d", it));
	333	continue;
	334	}
008eda2b	335	if (!particle->IsPrimary()) continue;
2b556440	336	if (particle->Charge() == 0) continue;
68589651	337	//Double_t pT = particle->Pt();
2b556440	338	Double_t eta = particle->Eta();
2b556440	339	Double_t phi = particle->Phi();
008eda2b	340	if (eta >= fFMDMinEta && eta <= fFMDMaxEta) {
2b556440	341	// Add flow if it is in the argument
68589651	342	/* FLOW WEIGHTS DISABLED IN THE VERSION - COMING BACK SOON
	343	if (flowFlags != 0) {
	344	// weight = fWeights.CalcWeight(eta, pT, phi, particle->PdgCode(),
	345	// rp, fCent, fAddType, fAddOrder,
	346	// flowFlags) + 1;
03f52e9d	347	weight = fWeights.CalcWeight(eta, pT, phi, particle->PdgCode(),
03f52e9d	348	rp, b);
68589651	349	// Printf("%f", weight);
68589651	350	}*/
03f52e9d	351	fdNdedpMC.Fill(eta, phi, weight);
2b556440	352	}
2b556440	353	}
008eda2b	354	Int_t sBin = fdNdedpMC.GetXaxis()->FindBin(fFMDMinEta);
008eda2b	355	Int_t eBin = fdNdedpMC.GetXaxis()->FindBin(fFMDMaxEta);
d420e249	356	for ( ; sBin < eBin; sBin++) fdNdedpMC.SetBinContent(sBin, 0, 1.);
2b556440	357
	358	return kTRUE;
	359	}
	360	//_____________________________________________________________________
2b556440	361	Double_t AliForwardMCFlowTaskQC::GetCentFromB() const
	362	{
	363	//
	364	// Get centrality from MC impact parameter.
2b556440	365	//
2b556440	366	Double_t cent = -1.;
936b0a6c	367	AliAODMCHeader* header =
	368	static_cast<AliAODMCHeader*>(fAOD->FindListObject(AliAODMCHeader::
	369	StdBranchName()));
2b556440	370	if (!header) return cent;
9c686cb4	371	Double_t b = header->GetImpactParameter();
2b556440	372
	373	cent = fImpactParToCent->Eval(b);
	374
	375	return cent;
	376	}
	377	//_____________________________________________________________________
d420e249	378	void AliForwardMCFlowTaskQC::PrintFlowSetup() const
	379	{
	380	//
	381	// Print the setup of the flow task
	382	//
	383	Printf("AliForwardMCFlowTaskQC::Print");
	384	Printf("Number of bins in vertex axis:\t%d", fVtxAxis->GetNbins());
	385	Printf("Range of vertex axis :\t[%3.1f,%3.1f]",
	386	fVtxAxis->GetXmin(), fVtxAxis->GetXmax());
	387	printf("Doing flow analysis for :\t");
68589651	388	for (Int_t n = 0; n < fV.GetSize(); n++) printf("v%d ", fV.At(n));
d420e249	389	printf("\n");
9c686cb4	390	Printf("Satellite vertex flag :\t%s", ((fFlowFlags & kSatVtx) ?
	391	"true" : "false"));
	392	Printf("Symmetrize ref. flow wrt eta = 0:\t%s", ((fFlowFlags & kSymEta) ?
	393	"true" : "false"));
	394	Printf("Use an eta-gap for ref. flow :\t%s", ((fFlowFlags & kEtaGap) ?
	395	"true" : "false"));
d420e249	396	Printf("FMD sigma cut: :\t%f", fFMDCut);
d420e249	397	Printf("SPD sigma cut: :\t%f", fSPDCut);
68589651	398	if ((fFlowFlags & kEtaGap))
68589651	399	Printf("Eta gap: :\t%f", fEtaGap);
d420e249	400	}
d420e249	401	//_____________________________________________________________________
2b556440	402	//
	403	//
	404	// EOF
	405