X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=PHOS%2FAliPHOSPIDv1.cxx;h=f571de571a76c9bc485170f113e29dc4dc96af9a;hb=87fcb86dac816894776bcd5fe05241dad3ee8f96;hp=169170e0d4b24fb16be97746bd02d7f11973403f;hpb=9fa5f1d0dceb2c061fab64fa0da81c9bed638415;p=u%2Fmrichter%2FAliRoot.git diff --git a/PHOS/AliPHOSPIDv1.cxx b/PHOS/AliPHOSPIDv1.cxx index 169170e0d4b..f571de571a7 100644 --- a/PHOS/AliPHOSPIDv1.cxx +++ b/PHOS/AliPHOSPIDv1.cxx @@ -23,47 +23,61 @@ // - PCA: Principal Components Analysis.. // The identified particle has an identification number corresponding // to a 9 bits number: -// -Bit 0 to 2: bit set if RCPV > fCpvEmcDistance (each bit corresponds +// -Bit 0 to 2: bit set if RCPV > CpvEmcDistance (each bit corresponds // to a different efficiency-purity point of the photon identification) -// -Bit 3 to 5: bit set if TOF < fTimeGate (each bit corresponds +// -Bit 3 to 5: bit set if TOF < TimeGate (each bit corresponds // to a different efficiency-purity point of the photon identification) // -Bit 6 to 9: bit set if Principal Components are -// inside an ellipse defined by fX_center, fY_center, fA, fB, fAngle +// inside an ellipse defined by the parameters a, b, c, x0 and y0. // (each bit corresponds to a different efficiency-purity point of the -// photon identification) +// photon identification) +// The PCA (Principal components analysis) needs a file that contains +// a previous analysis of the correlations between the particles. This +// file is $ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root. Analysis done for +// energies between 0.5 and 100 GeV. // A calibrated energy is calculated. The energy of the reconstructed -// cluster is corrected with the formula A + B * E + C * E^2, whose parameters -// where obtained thourgh the study of the reconstructed energy -// distribution of monoenergetic photons. -// +// cluster is corrected with the formula A + B * E + C * E^2, whose +// parameters where obtained through the study of the reconstructed +// energy distribution of monoenergetic photons. // +// All the parameters (RCPV(2 rows-3 columns),TOF(1r-3c),PCA(5r-4c) +// and calibration(1r-3c))are stored in a file called +// $ALICE_ROOT/PHOS/Parameters.dat. Each time that AliPHOSPIDv1 is +// initialized, this parameters are copied to a Matrix (9,4), a +// TMatrixD object. // // use case: -// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root","v1") +// root [0] AliPHOSPIDv1 * p = new AliPHOSPIDv1("galice1.root") // Warning in : object already instantiated -// // reading headers from file galice1.root and create RecParticles with title v1 - // TrackSegments and RecPoints with title "v1" are used -// // set file name for the branch RecParticles +// // reading headers from file galice1.root and create RecParticles + // TrackSegments and RecPoints are used +// // set file name for the branch RecParticles // root [1] p->ExecuteTask("deb all time") -// // available options -// // "deb" - prints # of reconstructed particles -// // "deb all" - prints # and list of RecParticles -// // "time" - prints benchmarking results +// // available options +// // "deb" - prints # of reconstructed particles +// // "deb all" - prints # and list of RecParticles +// // "time" - prints benchmarking results // -// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1","v0") +// root [2] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","v1",kTRUE) // Warning in : object already instantiated -// // reading headers from file galice1.root and create RecParticles with title v1 - // RecPoints and TrackSegments with title "v0" are used +// //Split mode. // root [3] p2->ExecuteTask() // -// There are two possible principal files available to do the analysis. -// One for energy ranges from 0.5 to 5 GeV, and another -// one from 5 to 100 GeV. This files are automatically called in function -// of the cluster energy. + //*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) & // Gustavo Conesa April 2002 - +// PCA redesigned by Gustavo Conesa October 2002: +// The way of using the PCA has changed. Instead of 2 +// files with the PCA, each one with different energy ranges +// of application, we use the wide one (0.5-100 GeV), and instead +// of fixing 3 ellipses for different ranges of energy, it has been +// studied the dependency of the ellipses parameters with the +// energy, and they are implemented in the code as a funtion +// of the energy. +// +// +// // --- ROOT system --- #include "TROOT.h" #include "TTree.h" @@ -80,13 +94,9 @@ // --- Standard library --- -#include -#include -#include // --- AliRoot header files --- -#include "AliRun.h" #include "AliGenerator.h" #include "AliPHOS.h" #include "AliPHOSPIDv1.h" @@ -105,69 +115,42 @@ AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID() // default ctor InitParameters() ; + fDefaultInit = kTRUE ; } //____________________________________________________________________________ -AliPHOSPIDv1::AliPHOSPIDv1(const char * headerFile,const char * name, const char * from) : AliPHOSPID(headerFile, name) +AliPHOSPIDv1::AliPHOSPIDv1(const AliPHOSPIDv1 & pid ):AliPHOSPID(pid) +{ + // ctor + InitParameters() ; + Init() ; + +} - +//____________________________________________________________________________ +AliPHOSPIDv1::AliPHOSPIDv1(const TString alirunFileName, const TString eventFolderName):AliPHOSPID(alirunFileName, eventFolderName) { //ctor with the indication on where to look for the track segments InitParameters() ; - - if ( from == 0 ) - fFrom = name ; - else - fFrom = from ; - Init() ; - + fDefaultInit = kFALSE ; } //____________________________________________________________________________ AliPHOSPIDv1::~AliPHOSPIDv1() { // dtor - // gime=0 if PID created by default ctor (to get just the parameters) - - delete [] fX ; // Principal input - delete [] fP ; // Principal components - delete fParameters ; // Matrix of Parameters - delete fParameters5 ; // Matrix of Parameters - delete fParameters100 ; // Matrix of Parameters - - - AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; - - if(gime){ - // remove the task from the folder list - gime->RemoveTask("P",GetName()) ; - TString name(GetName()) ; - name.ReplaceAll("pid", "clu") ; - gime->RemoveTask("C",name) ; - - // remove the data from the folder list - name = GetName() ; - name.Remove(name.Index(":")) ; - gime->RemoveObjects("RE", name) ; // EMCARecPoints - gime->RemoveObjects("RC", name) ; // CPVRecPoints - gime->RemoveObjects("T", name) ; // TrackSegments - gime->RemoveObjects("P", name) ; // RecParticles - - // Delete gAlice - gime->CloseFile() ; - fSplitFile = 0 ; - } + delete [] fX ; // Principal input + delete [] fPPhoton ; // Photon Principal components + delete [] fPPi0 ; // Pi0 Principal components } - //____________________________________________________________________________ const TString AliPHOSPIDv1::BranchName() const { - TString branchName(GetName() ) ; - branchName.Remove(branchName.Index(Version())-1) ; - return branchName ; + + return GetName() ; } //____________________________________________________________________________ @@ -176,561 +159,386 @@ void AliPHOSPIDv1::Init() // Make all memory allocations that are not possible in default constructor // Add the PID task to the list of PHOS tasks - if ( strcmp(GetTitle(), "") == 0 ) - SetTitle("galice.root") ; - - AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ; + AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data()) ; - gime->SetRecParticlesTitle(BranchName()) ; - if ( gime == 0 ) { - cerr << "ERROR: AliPHOSPIDv1::Init -> Could not obtain the Getter object !" << endl ; - return ; - } - - gime->PostPID(this) ; - // create a folder on the white board //YSAlice/WhiteBoard/RecParticles/PHOS/recparticlesName - gime->PostRecParticles(BranchName()) ; - + if ( !gime->PID() ) + gime->PostPID(this) ; } //____________________________________________________________________________ void AliPHOSPIDv1::InitParameters() { - fFrom = "" ; - fHeaderFileName = GetTitle() ; - TString name(GetName()) ; - if (name.IsNull()) - name = "Default" ; - fTrackSegmentsTitle = name ; - fRecPointsTitle = name ; - fRecParticlesTitle = name ; - name.Append(":") ; - name.Append(Version()) ; - SetName(name) ; + // Initialize PID parameters fRecParticlesInRun = 0 ; fNEvent = 0 ; - fClusterizer = 0 ; - fTSMaker = 0 ; fRecParticlesInRun = 0 ; SetParameters() ; // fill the parameters matrix from parameters file } -//____________________________________________________________________________ -Double_t AliPHOSPIDv1::GetCpvtoEmcDistanceCut(const Float_t Cluster_En, const TString Eff_Pur) +//________________________________________________________________________ +void AliPHOSPIDv1::Exec(Option_t * option) { - // Get CpvtoEmcDistanceCut parameter depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) + //Steering method - Int_t eff_pur = GetEffPurOption(Eff_Pur); + + if(strstr(option,"tim")) + gBenchmark->Start("PHOSPID"); - GetAnalysisParameters(Cluster_En) ; - if((fClusterrcpv!= -1)&&(eff_pur != -1)) - return (*fParameters)(fClusterrcpv,eff_pur) ; - else - return 0.0; -} -//____________________________________________________________________________ + if(strstr(option,"print")) { + Print() ; + return ; + } -Double_t AliPHOSPIDv1::GetTimeGate(const Float_t Cluster_En, const TString Eff_Pur) -{ - // Get TimeGate parameter depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) + + AliPHOSGetter * gime = AliPHOSGetter::Instance() ; - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; + Int_t nevents = gime->MaxEvent() ; + Int_t ievent ; - if((fCluster!= -1)&&(eff_pur != -1)) - return (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) ; - else - return 0.0; + for(ievent = 0; ievent < nevents; ievent++){ + gime->Event(ievent,"TR") ; + if(gime->TrackSegments() && //Skip events, where no track segments made + gime->TrackSegments()->GetEntriesFast()) { + MakeRecParticles() ; + WriteRecParticles(); + if(strstr(option,"deb")) + PrintRecParticles(option) ; + //increment the total number of rec particles per run + fRecParticlesInRun += gime->RecParticles()->GetEntriesFast() ; + } + } + if(strstr(option,"tim")){ + gBenchmark->Stop("PHOSPID"); + Info("Exec", "took %f seconds for PID %f seconds per event", + gBenchmark->GetCpuTime("PHOSPID"), + gBenchmark->GetCpuTime("PHOSPID")/nevents) ; + } + + Unload(); } -//_____________________________________________________________________________ -Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const + +//____________________________________________________________________________ +const TString AliPHOSPIDv1::GetFileNamePrincipal(TString particle) const { - // Calculates the distance between the EMC RecPoint and the PPSD RecPoint - - const AliPHOSGeometry * geom = AliPHOSGetter::GetInstance()->PHOSGeometry() ; - TVector3 vecEmc ; - TVector3 vecCpv ; - if(cpv){ - emc->GetLocalPosition(vecEmc) ; - cpv->GetLocalPosition(vecCpv) ; - if(emc->GetPHOSMod() == cpv->GetPHOSMod()){ - // Correct to difference in CPV and EMC position due to different distance to center. - // we assume, that particle moves from center - Float_t dCPV = geom->GetIPtoOuterCoverDistance(); - Float_t dEMC = geom->GetIPtoCrystalSurface() ; - dEMC = dEMC / dCPV ; - vecCpv = dEMC * vecCpv - vecEmc ; - if (Axis == "X") return vecCpv.X(); - if (Axis == "Y") return vecCpv.Y(); - if (Axis == "Z") return vecCpv.Z(); - if (Axis == "R") return vecCpv.Mag(); - } - - return 100000000 ; - } - return 100000000 ; + //Get file name that contains the PCA for a particle ("photon or pi0") + particle.ToLower(); + TString name; + if (particle=="photon") name = fFileNamePrincipalPhoton ; + else if (particle=="pi0" ) name = fFileNamePrincipalPi0 ; + else Error("GetFileNamePrincipal","Wrong particle name: %s (choose from pi0/photon)\n",particle.Data()); + return name; } //____________________________________________________________________________ -Double_t AliPHOSPIDv1::CalibratedEnergy(Float_t e){ - //It calibrates Energy depending on the recpoint energy. -// The energy of the reconstructed -// cluster is corrected with the formula A + B* E + C* E^2, whose parameters -// where obtained through the study of the reconstructed energy -// distribution of monoenergetic photons. - Double_t enerec; - enerec = fACalParameter + fBCalParameter * e+ fCCalParameter * e * e; +const Float_t AliPHOSPIDv1::GetParameterCalibration(Int_t i) const +{ + // Get the i-th parameter "Calibration" + Float_t param = 0.; + if (i>2 || i<0) + Error("GetParameterCalibration","Invalid parameter number: %d",i); + else + param = (*fParameters)(0,i); + return param; +} + +//____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetCalibratedEnergy(const Float_t e) const +{ +// It calibrates Energy depending on the recpoint energy. +// The energy of the reconstructed cluster is corrected with +// the formula A + B* E + C* E^2, whose parameters where obtained +// through the study of the reconstructed energy distribution of +// monoenergetic photons. + + Float_t p[]={0.,0.,0.}; + for (Int_t i=0; i<3; i++) p[i] = GetParameterCalibration(i); + Float_t enerec = p[0] + p[1]*e + p[2]*e*e; return enerec ; } + //____________________________________________________________________________ -Int_t AliPHOSPIDv1::GetPrincipalSign(Double_t* P, Int_t cluster, Int_t eff_pur)const +const Float_t AliPHOSPIDv1::GetParameterCpv2Emc(Int_t i, TString axis) const { - //This method gives if the PCA of the particle are inside a defined ellipse - // Get the parameters that define the ellipse stored in the - // fParameters matrix. - Double_t X_center = (*fParameters)(cluster+6,eff_pur) ; - Double_t Y_center = (*fParameters)(cluster+9,eff_pur) ; - Double_t A = (*fParameters)(cluster+12,eff_pur) ; - Double_t B = (*fParameters)(cluster+15,eff_pur) ; - Double_t Angle = (*fParameters)(cluster+18,eff_pur) ; - - Int_t prinsign; - Double_t Dx = 0. ; - Double_t Delta = 0. ; - Double_t Y = 0. ; - Double_t Y_1 = 0. ; - Double_t Y_2 = 0. ; - Double_t Pi = TMath::Pi() ; - Double_t Cos_Theta = TMath::Cos(Pi*Angle/180.) ; - Double_t Sin_Theta = TMath::Sin(Pi*Angle/180.) ; - - Dx = P[0] - X_center ; - Delta = 4.*A*A*B*B* (A*A*Cos_Theta*Cos_Theta - + B*B*Sin_Theta*Sin_Theta - Dx*Dx) ; - if (Delta < 0.) - {prinsign=0;} - - else if (Delta == 0.) - { - Y = Cos_Theta*Sin_Theta*(A*A - B*B)*Dx / - (A*A*Cos_Theta*Cos_Theta + B*B*Sin_Theta*Sin_Theta) ; - Y += Y_center ; - if(P[1]==Y ) - {prinsign=1;} - else - {prinsign=0;} - } - else - { - Y_1 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx + - TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta + - B*B*Sin_Theta*Sin_Theta) ; - Y_2 = (Cos_Theta*Sin_Theta*(A*A - B*B) *Dx - - TMath::Sqrt(Delta)/2.)/(A*A*Cos_Theta*Cos_Theta - + B*B*Sin_Theta*Sin_Theta) ; - Y_1 += Y_center ; - Y_2 += Y_center ; - if ((P[1]<=Y_1) && (P[1]>=Y_2)) - {prinsign=1;} - else - {prinsign=0;} - } - return prinsign; + // Get the i-th parameter "CPV-EMC distance" for the specified axis + Float_t param = 0.; + if(i>2 || i<0) + Error("GetParameterCpv2Emc","Invalid parameter number: %d",i); + else { + axis.ToLower(); + if (axis == "x") param = (*fParameters)(1,i); + else if (axis == "z") param = (*fParameters)(2,i); + else Error("GetParameterCpv2Emc","Invalid axis name: %s",axis.Data()); + } + return param; } //____________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseParameters(Float_t Cluster_En, TString Eff_Pur, Float_t x, Float_t y,Float_t a, Float_t b,Float_t angle) +const Float_t AliPHOSPIDv1::GetCpv2EmcDistanceCut(TString axis, Float_t e) const { + // Get CpvtoEmcDistance Cut depending on the cluster energy, axis and + // Purity-Efficiency point + + axis.ToLower(); + Float_t p[]={0.,0.,0.}; + for (Int_t i=0; i<3; i++) p[i] = GetParameterCpv2Emc(i,axis); + Float_t sig = p[0] + TMath::Exp(p[1] - p[2]*e); + return sig; +} - // Set all ellipse parameters depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)){ - (*fParameters)(fCluster+6 +fMatrixExtraRow,eff_pur) = x ; - (*fParameters)(fCluster+9 +fMatrixExtraRow,eff_pur) = y ; - (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ; - (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ; - (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ; +//____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetEllipseParameter(TString particle, TString param, Float_t e) const +{ + // Calculates the parameter param of the ellipse + + particle.ToLower(); + param. ToLower(); + Float_t p[4]={0.,0.,0.,0.}; + Float_t value = 0.0; + for (Int_t i=0; i<4; i++) p[i] = GetParameterToCalculateEllipse(particle,param,i); + if (particle == "photon") { + if (param.Contains("a")) e = TMath::Min((Double_t)e,70.); + else if (param.Contains("b")) e = TMath::Min((Double_t)e,70.); + else if (param.Contains("x0")) e = TMath::Max((Double_t)e,1.1); } - + + value = p[0]/TMath::Sqrt(e) + p[1]*e + p[2]*e*e + p[3]; + return value; } -//__________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseXCenter(Float_t Cluster_En, TString Eff_Pur, Float_t x) -{ - // Set the ellipse parameter x_center depending on the custer energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+6+fMatrixExtraRow,eff_pur) = x ; -} -//_________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseYCenter(Float_t Cluster_En, TString Eff_Pur, Float_t y) -{ - // Set the ellipse parameter y_center depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+9+fMatrixExtraRow,eff_pur) = y ; +//_____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetParameterPhotonBoundary (Int_t i) const +{ + // Get the parameter "i" to calculate the boundary on the moment M2x + // for photons at high p_T + Float_t param = 0; + if (i>3 || i<0) + Error("GetParameterPhotonBoundary","Wrong parameter number: %d\n",i); + else + param = (*fParameters)(14,i) ; + return param; } -//_________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseAParameter(Float_t Cluster_En, TString Eff_Pur, Float_t a) -{ - // Set the ellipse parameter a depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+12+fMatrixExtraRow,eff_pur) = a ; + +//____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetParameterPi0Boundary (Int_t i) const +{ + // Get the parameter "i" to calculate the boundary on the moment M2x + // for pi0 at high p_T + Float_t param = 0; + if (i>2 || i<0) + Error("GetParameterPi0Boundary","Wrong parameter number: %d\n",i); + else + param = (*fParameters)(15,i) ; + return param; } -//________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseBParameter(Float_t Cluster_En, TString Eff_Pur, Float_t b) + +//____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetParameterTimeGate(Int_t i) const { - // Set the ellipse parameter b depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+15+fMatrixExtraRow,eff_pur) = b ; + // Get TimeGate parameter depending on Purity-Efficiency i: + // i=0 - Low purity, i=1 - Medium purity, i=2 - High purity + Float_t param = 0.; + if(i>2 || i<0) + Error("GetParameterTimeGate","Invalid Efficiency-Purity choice %d",i); + else + param = (*fParameters)(3,i) ; + return param; } -//________________________________________________________________________ -void AliPHOSPIDv1::SetEllipseAngle(Float_t Cluster_En, TString Eff_Pur, Float_t angle) -{ - // Set the ellipse parameter angle depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+18+fMatrixExtraRow,eff_pur) = angle ; -} //_____________________________________________________________________________ -void AliPHOSPIDv1::SetCpvtoEmcDistanceCut(Float_t Cluster_En, TString Eff_Pur, Float_t cut) -{ +const Float_t AliPHOSPIDv1::GetParameterToCalculateEllipse(TString particle, TString param, Int_t i) const +{ + // Get the parameter "i" that is needed to calculate the ellipse + // parameter "param" for the particle "particle" ("photon" or "pi0") + + particle.ToLower(); + param. ToLower(); + Int_t offset = -1; + if (particle == "photon") offset=0; + else if (particle == "pi0") offset=5; + else + Error("GetParameterToCalculateEllipse","Wrong particle name: %s (choose from pi0/photon)\n",particle.Data()); - // Set the parameter Cpvto EmcDistanceCut depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) + Int_t p= -1; + Float_t par = 0; + if (param.Contains("a")) p=4+offset; + else if(param.Contains("b")) p=5+offset; + else if(param.Contains("c")) p=6+offset; + else if(param.Contains("x0"))p=7+offset; + else if(param.Contains("y0"))p=8+offset; + + if (i>4 || i<0) + Error("GetParameterToCalculateEllipse", "No parameter with index", i) ; + else if (p==-1) + Error("GetParameterToCalculateEllipse", "No parameter with name %s", param.Data() ) ; + else + par = (*fParameters)(p,i) ; - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fClusterrcpv!= -1)&&(eff_pur != -1)) - (*fParameters)(fClusterrcpv,eff_pur) = cut ; + return par; } -//_____________________________________________________________________________ -void AliPHOSPIDv1::SetTimeGate(Float_t Cluster_En, TString Eff_Pur, Float_t gate) -{ - // Set the parameter TimeGate depending on the cluster energy and - // Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = GetEffPurOption(Eff_Pur); - GetAnalysisParameters(Cluster_En) ; - if((fCluster!= -1)&&(eff_pur != -1)) - (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur) = gate ; -} -//_____________________________________________________________________________ -void AliPHOSPIDv1::SetParameters() - //TString OptFileName) -{ - // PCA : To do the Principal Components Analysis it is necessary - // the Principal file, which is opened here - fX = new double[7]; // Data for the PCA - fP = new double[7]; // Eigenvalues of the PCA - - // Set the principal and parameters files to be used - fFileName5 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-5.root" ; - fFileNamePar5 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_5.dat"); - fFileName100 = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ; - fFileNamePar100 = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters_0.5_100.dat"); - - //SetPrincipalFileOptions(); - //fOptFileName); - TFile f5( fFileName5.Data(), "read" ) ; - fPrincipal5 = dynamic_cast (f5.Get("principal")) ; - f5.Close() ; - TFile f100( fFileName100.Data(), "read" ) ; - fPrincipal100 = dynamic_cast (f100.Get("principal")) ; - f100.Close() ; - TFile f( fFileName100.Data(), "read" ) ; - fPrincipal = dynamic_cast (f.Get("principal")) ; - f.Close() ; - // Initialization of the Parameters matrix. In the File ParametersXX.dat - // are all the parameters. These are introduced in a matrix of 21x3 or 22x3 - // elements (depending on the principal file 21 rows for 0.5-5 GeV and 22 - // rows for 5-100). - // All the parameters defined in this file are, in order of row (there are - // 3 rows per parameter): CpvtoEmcDistanceCut(if the principal file is 5-100 - // GeV then 4 rows), TimeGate and the ellipse parameters, X_center, Y_center, - // a, b, angle. Each row of a given parameter depends on the cluster energy range - // (wich depends on the chosen principal file) - // Each column designs the parameters for a point in the Efficiency-Purity - // of the photon identification P1(96%,63%), P2(87%,0.88%) and P3(68%,94%) - // for the principal file from 0.5-5 GeV and for the other one P1(95%,79%), - // P2(89%,90%) and P3(72%,96%) - - - fParameters5 = new TMatrixD(21,3) ; - fParameters100 = new TMatrixD(22,3) ; - fParameters = new TMatrixD(22,3) ; - - ifstream paramFile5(fFileNamePar5, ios::in) ; - - Int_t i,j ; - - for(i = 0; i< 21; i++){ - for(j = 0; j< 3; j++){ - paramFile5 >> (*fParameters5)(i,j) ; - } - } - paramFile5.close(); - - ifstream paramFile100(fFileNamePar100, ios::in) ; - - Int_t l,k ; +//____________________________________________________________________________ +const Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * axis)const +{ + // Calculates the distance between the EMC RecPoint and the PPSD RecPoint - for(l = 0; l< 22; l++){ - for(k = 0; k< 3; k++){ - paramFile100 >> (*fParameters100)(l,k) ; - } - } - paramFile100.close(); - - ifstream paramFile(fFileNamePar100, ios::in) ; - Int_t h,n; - for(h = 0; h< 22; h++){ - for(n = 0; n< 3; n++){ - paramFile >> (*fParameters)(h,n) ; + const AliPHOSGeometry * geom = AliPHOSGetter::Instance()->PHOSGeometry() ; + TVector3 vecEmc ; + TVector3 vecCpv ; + if(cpv){ + emc->GetLocalPosition(vecEmc) ; + cpv->GetLocalPosition(vecCpv) ; + if(emc->GetPHOSMod() == cpv->GetPHOSMod()){ + // Correct to difference in CPV and EMC position due to different distance to center. + // we assume, that particle moves from center + Float_t dCPV = geom->GetIPtoOuterCoverDistance(); + Float_t dEMC = geom->GetIPtoCrystalSurface() ; + dEMC = dEMC / dCPV ; + vecCpv = dEMC * vecCpv - vecEmc ; + if (axis == "X") return vecCpv.X(); + if (axis == "Y") return vecCpv.Y(); + if (axis == "Z") return vecCpv.Z(); + if (axis == "R") return vecCpv.Mag(); } + return 100000000 ; } - paramFile.close(); - - fCluster = -1; - fClusterrcpv = -1; - fMatrixExtraRow = 0; - - //Calibration parameters Encal = C * E^2 + B * E + A (E is the energy from cluster) - fACalParameter = 0.0241 ; - fBCalParameter = 1.0504 ; - fCCalParameter = 0.000249 ; - - // fParameters->Print(); + return 100000000 ; } -//_____________________________________________________________________________ -void AliPHOSPIDv1::GetAnalysisParameters(Float_t Cluster_En) +//____________________________________________________________________________ +const Int_t AliPHOSPIDv1::GetCPVBit(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv,const Int_t effPur, Float_t e) const { - if(Cluster_En <= 5.){ - fPrincipal = fPrincipal5; - fParameters = fParameters5; - fMatrixExtraRow = 0; - GetClusterOption(Cluster_En,kFALSE) ; - } - else{ - fPrincipal = fPrincipal100; - fParameters = fParameters100; - fMatrixExtraRow = 1; - GetClusterOption(Cluster_En,kTRUE) ; - } + if(effPur>2 || effPur<0) + Error("GetCPVBit","Invalid Efficiency-Purity choice %d",effPur); + + Float_t sigX = GetCpv2EmcDistanceCut("X",e); + Float_t sigZ = GetCpv2EmcDistanceCut("Z",e); + + Float_t deltaX = TMath::Abs(GetDistance(emc, cpv, "X")); + Float_t deltaZ = TMath::Abs(GetDistance(emc, cpv, "Z")); + + if((deltaX>sigX*(effPur+1))|(deltaZ>sigZ*(effPur+1))) + return 1;//Neutral + else + return 0;//Charged } -//_____________________________________________________________________________ -void AliPHOSPIDv1::GetClusterOption(const Float_t Cluster_En, const Bool_t range) +//____________________________________________________________________________ +const Int_t AliPHOSPIDv1::GetPrincipalBit(TString particle, const Double_t* p,const Int_t effPur, Float_t e)const { - - // Gives the cluster energy range. - // range = kFALSE Default analisys range from 0.5 to 5 GeV - // range = kTRUE analysis range from 0.5 to 100 GeV - - - //Int_t cluster = -1 ; + //Is the particle inside de PCA ellipse? - if((range == kFALSE)){ - if((Cluster_En > 0.3)&&(Cluster_En <= 1.0)){ - fCluster = 0 ; - fClusterrcpv = 0 ; - } - if((Cluster_En > 1.0)&&(Cluster_En <= 2.0)){ - fCluster = 1 ; - fClusterrcpv = 1 ; - } - if( Cluster_En > 2.0){ - fCluster = 2 ; - fClusterrcpv = 2 ; - } - } - else if(range == kTRUE){ - if((Cluster_En > 0.5 )&&(Cluster_En <= 20.0)) fCluster = 0 ; - if((Cluster_En > 20.0)&&(Cluster_En <= 50.0)) fCluster = 1 ; - if( Cluster_En > 50.0) fCluster = 2 ; - if((Cluster_En > 5.0 )&&(Cluster_En <= 10.0)) fClusterrcpv = 0 ; - if((Cluster_En > 10.0)&&(Cluster_En <= 20.0)) fClusterrcpv = 1 ; - if((Cluster_En > 20.0)&&(Cluster_En <= 30.0)) fClusterrcpv = 2 ; - if( Cluster_En > 30.0) fClusterrcpv = 3 ; - } - else { - fCluster = -1 ; - fClusterrcpv = -1; - cout<<"Invalid Energy option"< 30 GeV) + // if the second moment M2x is below the boundary + + Float_t e = emc->GetEnergy(); + if (e < 30.0) return 0; + Float_t m2x = emc->GetM2x(); + Float_t m2xBoundary = GetParameterPhotonBoundary(0) * + TMath::Exp(-TMath::Power(e-GetParameterPhotonBoundary(1),2)/2.0/ + TMath::Power(GetParameterPhotonBoundary(2),2)) + + GetParameterPhotonBoundary(3); + Info("GetHardPhotonBit","E=%f, m2x=%f, boundary=%f",e,m2x,m2xBoundary); + if (m2x < m2xBoundary) + return 1;// A hard photon + else + return 0;// Not a hard photon +} - // Looks for the Purity-Efficiency point (possible options "HIGH EFFICIENCY" - // "MEDIUM EFFICIENCY" "LOW EFFICIENCY" and 3 more options changing - // EFFICIENCY by PURITY) - - Int_t eff_pur = -1 ; - - if(Eff_Pur.Contains("HIGH EFFICIENCY") ||Eff_Pur.Contains("LOW PURITY") ) - eff_pur = 0 ; - else if(Eff_Pur.Contains("MEDIUM EFFICIENCY") ||Eff_Pur.Contains("MEDIUM PURITY") ) - eff_pur = 1 ; - else if(Eff_Pur.Contains("LOW EFFICIENCY")||Eff_Pur.Contains("HIGH PURITY") ) - eff_pur = 2 ; - else{ - eff_pur = -1; - cout<<"Invalid Efficiency-Purity option"< 30 GeV) + // if the second moment M2x is above the boundary + + Float_t e = emc->GetEnergy(); + if (e < 30.0) return 0; + Float_t m2x = emc->GetM2x(); + Float_t m2xBoundary = GetParameterPi0Boundary(0) + + e * GetParameterPi0Boundary(1); + Info("GetHardPi0Bit","E=%f, m2x=%f, boundary=%f",e,m2x,m2xBoundary); + if (m2x > m2xBoundary) + return 1;// A hard pi0 + else + return 0;// Not a hard pi0 } + //____________________________________________________________________________ +TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * )const +{ + // Calculates the momentum direction: + // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint + // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints + // However because of the poor position resolution of PPSD the direction is always taken as if we were + // in case 1. -void AliPHOSPIDv1::Exec(Option_t * option) -{ - //Steering method + TVector3 dir(0,0,0) ; - if( strcmp(GetName(), "")== 0 ) - Init() ; + TVector3 emcglobalpos ; + TMatrix dummy ; - if(strstr(option,"tim")) - gBenchmark->Start("PHOSPID"); + emc->GetGlobalPosition(emcglobalpos, dummy) ; - if(strstr(option,"print")) { - Print("") ; - return ; - } - - //cout << gDirectory->GetName() << endl ; - - gAlice->GetEvent(0) ; - //check, if the branch with name of this" already exits? - if (gAlice->TreeR()) { - TObjArray * lob = (TObjArray*)gAlice->TreeR()->GetListOfBranches() ; - TIter next(lob) ; - TBranch * branch = 0 ; - Bool_t phospidfound = kFALSE, pidfound = kFALSE ; - - TString taskName(GetName()) ; - taskName.Remove(taskName.Index(Version())-1) ; - - while ( (branch = (TBranch*)next()) && (!phospidfound || !pidfound) ) { - if ( (strcmp(branch->GetName(), "PHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) ) - phospidfound = kTRUE ; - - else if ( (strcmp(branch->GetName(), "AliPHOSPID")==0) && (strcmp(branch->GetTitle(), taskName.Data())==0) ) - pidfound = kTRUE ; - } - - if ( phospidfound || pidfound ) { - cerr << "WARNING: AliPHOSPIDv1::Exec -> RecParticles and/or PIDtMaker branch with name " - << taskName.Data() << " already exits" << endl ; - return ; - } - } - - Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; - Int_t ievent ; - AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; - for(ievent = 0; ievent < nevents; ievent++){ - gime->Event(ievent,"R") ; - - MakeRecParticles() ; - - WriteRecParticles(ievent); - - if(strstr(option,"deb")) - PrintRecParticles(option) ; + dir = emcglobalpos ; + dir.SetZ( -dir.Z() ) ; // why ? + dir.SetMag(1.) ; - //increment the total number of rec particles per run - fRecParticlesInRun += gime->RecParticles(BranchName())->GetEntriesFast() ; + //account correction to the position of IP + Float_t xo,yo,zo ; //Coordinates of the origin + gAlice->Generator()->GetOrigin(xo,yo,zo) ; + TVector3 origin(xo,yo,zo); + dir = dir - origin ; - } - - if(strstr(option,"tim")){ - gBenchmark->Stop("PHOSPID"); - cout << "AliPHOSPID:" << endl ; - cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID " - << gBenchmark->GetCpuTime("PHOSPID")/nevents << " seconds per event " << endl ; - cout << endl ; - } - + return dir ; } //____________________________________________________________________________ -void AliPHOSPIDv1::MakeRecParticles(){ - +void AliPHOSPIDv1::MakeRecParticles() +{ // Makes a RecParticle out of a TrackSegment - AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; - TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ; - TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ; - TClonesArray * trackSegments = gime->TrackSegments(fFrom) ; + AliPHOSGetter * gime = AliPHOSGetter::Instance() ; + TObjArray * emcRecPoints = gime->EmcRecPoints() ; + TObjArray * cpvRecPoints = gime->CpvRecPoints() ; + TClonesArray * trackSegments = gime->TrackSegments() ; if ( !emcRecPoints || !cpvRecPoints || !trackSegments ) { - cerr << "ERROR: AliPHOSPIDv1::MakeRecParticles -> RecPoints or TrackSegments with name " - << fFrom << " not found ! " << endl ; - abort() ; + Fatal("MakeRecParticles", "RecPoints or TrackSegments not found !") ; } - TClonesArray * recParticles = gime->RecParticles(BranchName()) ; + TClonesArray * recParticles = gime->RecParticles() ; recParticles->Clear(); - TIter next(trackSegments) ; AliPHOSTrackSegment * ts ; Int_t index = 0 ; AliPHOSRecParticle * rp ; - while ( (ts = (AliPHOSTrackSegment *)next()) ) { new( (*recParticles)[index] ) AliPHOSRecParticle() ; @@ -750,65 +558,82 @@ void AliPHOSPIDv1::MakeRecParticles(){ // Choose the cluster energy range - Float_t e = emc->GetEnergy() ; + if (!emc) { + Fatal("MakeRecParticles", "-> emc(%d) = %d", ts->GetEmcIndex(), emc ) ; + } - - GetAnalysisParameters(e); + Float_t e = emc->GetEnergy() ; + + Float_t lambda[2] ; + emc->GetElipsAxis(lambda) ; + + if((lambda[0]>0.01) && (lambda[1]>0.01)){ + // Looking PCA. Define and calculate the data (X), + // introduce in the function X2P that gives the components (P). + + Float_t Spher = 0. ; + Float_t Emaxdtotal = 0. ; + + if((lambda[0]+lambda[1])!=0) + Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]); + + Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy(); + + fX[0] = lambda[0] ; + fX[1] = lambda[1] ; + fX[2] = emc->GetDispersion() ; + fX[3] = Spher ; + fX[4] = emc->GetMultiplicity() ; + fX[5] = Emaxdtotal ; + fX[6] = emc->GetCoreEnergy() ; + + fPrincipalPhoton->X2P(fX,fPPhoton); + fPrincipalPi0 ->X2P(fX,fPPi0); - if((fCluster== -1)||(fClusterrcpv == -1)) continue ; + } + else{ + fPPhoton[0]=-100.0; //We do not accept clusters with + fPPhoton[1]=-100.0; //one cell as a photon-like + fPPi0[0] =-100.0; + fPPi0[1] =-100.0; + } - // Ellipse and rcpv cut in function of the cluster energy + Float_t time =emc->GetTime() ; - // Loop of Efficiency-Purity (the 3 points of purity or efficiency are taken - // into account to set the particle identification) - for(Int_t eff_pur = 0; eff_pur < 3 ; eff_pur++){ + // Loop of Efficiency-Purity (the 3 points of purity or efficiency + // are taken into account to set the particle identification) + for(Int_t effPur = 0; effPur < 3 ; effPur++){ + + // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, + // 1st,2nd or 3rd bit (depending on the efficiency-purity point ) + // is set to 1 + if(GetCPVBit(emc, cpv, effPur,e) == 1 ) + rp->SetPIDBit(effPur) ; - Float_t lambda[2] ; - emc->GetElipsAxis(lambda) ; - Float_t time =emc->GetTime() ; + // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th + // bit (depending on the efficiency-purity point )is set to 1 + if(time< (*fParameters)(2,effPur)) + rp->SetPIDBit(effPur+3) ; - if((lambda[0]>0.01) && (lambda[1]>0.01) && time > 0.){ - - // Looking at the CPV detector. If RCPV greater than CpvEmcDistance, 1st, - // 2nd or 3rd bit (depending on the efficiency-purity point )is set to 1 . - - if(GetDistance(emc, cpv, "R") > (*fParameters)(fClusterrcpv,eff_pur) ) - rp->SetPIDBit(eff_pur) ; - - // Looking the TOF. If TOF smaller than gate, 4th, 5th or 6th - // bit (depending on the efficiency-purity point )is set to 1 - if(time< (*fParameters)(fCluster+3+fMatrixExtraRow,eff_pur)) - rp->SetPIDBit(eff_pur+3) ; - - // Looking PCA. Define and calculate the data (X), introduce in the function - // X2P that gives the components (P). - Float_t Spher = 0. ; - Float_t Emaxdtotal = 0. ; - - if((lambda[0]+lambda[1])!=0) Spher=fabs(lambda[0]-lambda[1])/(lambda[0]+lambda[1]); - - Emaxdtotal=emc->GetMaximalEnergy()/emc->GetEnergy(); - - fX[0] = lambda[0] ; - fX[1] = lambda[1] ; - fX[2] = emc->GetDispersion() ; - fX[3] = Spher ; - fX[4] = emc->GetMultiplicity() ; - fX[5] = Emaxdtotal ; - fX[6] = emc->GetCoreEnergy() ; - - fPrincipal->X2P(fX,fP); - - //If we are inside the ellipse, 7th, 8th or 9th - // bit (depending on the efficiency-purity point )is set to 1 - if(GetPrincipalSign(fP,fCluster+fMatrixExtraRow,eff_pur) == 1) - rp->SetPIDBit(eff_pur+6) ; - - } + //Photon PCA + //If we are inside the ellipse, 7th, 8th or 9th + // bit (depending on the efficiency-purity point )is set to 1 + if(GetPrincipalBit("photon",fPPhoton,effPur,e) == 1) + rp->SetPIDBit(effPur+6) ; + + //Pi0 PCA + //If we are inside the ellipse, 10th, 11th or 12th + // bit (depending on the efficiency-purity point )is set to 1 + if(GetPrincipalBit("pi0" ,fPPi0 ,effPur,e) == 1) + rp->SetPIDBit(effPur+9) ; } + if(GetHardPhotonBit(emc)) + rp->SetPIDBit(12) ; + if(GetHardPi0Bit (emc)) + rp->SetPIDBit(13) ; //Set momentum, energy and other parameters - Float_t encal = CalibratedEnergy(e); + Float_t encal = GetCalibratedEnergy(e); TVector3 dir = GetMomentumDirection(emc,cpv) ; dir.SetMag(encal) ; rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),encal) ; @@ -822,133 +647,233 @@ void AliPHOSPIDv1::MakeRecParticles(){ rp->SetPolarisation(0,0,0); index++ ; } - } - + //____________________________________________________________________________ -void AliPHOSPIDv1:: Print() +void AliPHOSPIDv1::Print() const { // Print the parameters used for the particle type identification - cout << "=============== AliPHOSPID1 ================" << endl ; - cout << "Making PID "<< endl ; - cout << " Headers file: " << fHeaderFileName.Data() << endl ; - cout << " RecPoints branch title: " << fRecPointsTitle.Data() << endl ; - cout << " TrackSegments Branch title: " << fTrackSegmentsTitle.Data() << endl ; - cout << " RecParticles Branch title " << fRecParticlesTitle.Data() << endl; - - cout << " Pricipal analysis file from 0.5 to 5 " << fFileName5.Data() << endl; - cout << " Name of parameters file "<Print() ; - - cout << " Pricipal analysis file from 5 to 100 " << fFileName100.Data() << endl; - cout << " Name of parameters file "<Print() ; - - cout << " Energy Calibration Parameters A + B* E + C * E^2"<Print() ; } + + //____________________________________________________________________________ -void AliPHOSPIDv1::WriteRecParticles(Int_t event) +void AliPHOSPIDv1::PrintRecParticles(Option_t * option) { - - AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; + // Print table of reconstructed particles - TClonesArray * recParticles = gime->RecParticles(BranchName()) ; - recParticles->Expand(recParticles->GetEntriesFast() ) ; - TTree * treeR = gAlice->TreeR() ; + AliPHOSGetter *gime = AliPHOSGetter::Instance() ; - if (!treeR) - gAlice->MakeTree("R", fSplitFile); - treeR = gAlice->TreeR() ; - - //First rp - Int_t bufferSize = 32000 ; - TBranch * rpBranch = treeR->Branch("PHOSRP",&recParticles,bufferSize); - rpBranch->SetTitle(fRecParticlesTitle); + TClonesArray * recParticles = gime->RecParticles() ; - - //second, pid - Int_t splitlevel = 0 ; - AliPHOSPIDv1 * pid = this ; - TBranch * pidBranch = treeR->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel); - pidBranch->SetTitle(fRecParticlesTitle.Data()); - - rpBranch->Fill() ; - pidBranch->Fill() ; - - gAlice->TreeR()->AutoSave() ;// Write(0,kOverwrite) ; + TString message ; + message = "\nevent " ; + message += gAlice->GetEvNumber() ; + message += " found " ; + message += recParticles->GetEntriesFast(); + message += " RecParticles\n" ; + if(strstr(option,"all")) { // printing found TS + message += "\n PARTICLE Index \n" ; + + Int_t index ; + for (index = 0 ; index < recParticles->GetEntries() ; index++) { + AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ; + message += "\n" ; + message += rp->Name().Data() ; + message += " " ; + message += rp->GetIndexInList() ; + message += " " ; + message += rp->GetType() ; + } + } + Info("Print", message.Data() ) ; } //____________________________________________________________________________ -TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv)const -{ - // Calculates the momentum direction: - // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint - // 2. if a EMC RecPoint and CPV RecPoint, direction is given by the line through the 2 recpoints - // However because of the poor position resolution of PPSD the direction is always taken as if we were - // in case 1. +void AliPHOSPIDv1::SetParameters() +{ + // PCA : To do the Principal Components Analysis it is necessary + // the Principal file, which is opened here + fX = new double[7]; // Data for the PCA + fPPhoton = new double[7]; // Eigenvalues of the PCA + fPPi0 = new double[7]; // Eigenvalues of the Pi0 PCA - TVector3 dir(0,0,0) ; - - TVector3 emcglobalpos ; - TMatrix dummy ; - - emc->GetGlobalPosition(emcglobalpos, dummy) ; + // Read photon principals from the photon file + fFileNamePrincipalPhoton = "$ALICE_ROOT/PHOS/PCA8pa15_0.5-100.root" ; + TFile f( fFileNamePrincipalPhoton.Data(), "read" ) ; + fPrincipalPhoton = dynamic_cast (f.Get("principal")) ; + f.Close() ; - dir = emcglobalpos ; - dir.SetZ( -dir.Z() ) ; // why ? - dir.SetMag(1.) ; + // Read pi0 principals from the pi0 file + + fFileNamePrincipalPi0 = "$ALICE_ROOT/PHOS/PCA_pi0_40-120.root" ; + TFile fPi0( fFileNamePrincipalPi0.Data(), "read" ) ; + fPrincipalPi0 = dynamic_cast (fPi0.Get("principal")) ; + fPi0.Close() ; + + // Open parameters file and initialization of the Parameters matrix. + // In the File Parameters.dat are all the parameters. These are introduced + // in a matrix of 16x4 + // + // All the parameters defined in this file are, in order of row: + // line 0 : calibration + // lines 1,2 : CPV rectangular cat for X and Z + // line 3 : TOF cut + // lines 4-8 : parameters to calculate photon PCA ellipse + // lines 9-13: parameters to calculate pi0 PCA ellipse + // lines 14-15: parameters to calculate border for high-pt photons and pi0 + + fFileNameParameters = gSystem->ExpandPathName("$ALICE_ROOT/PHOS/Parameters.dat"); + fParameters = new TMatrix(16,4) ; + const Int_t maxLeng=255; + char string[maxLeng]; + + // Open a text file with PID parameters + FILE *fd = fopen(fFileNameParameters.Data(),"r"); + if (!fd) + Fatal("SetParameter","File %s with a PID parameters cannot be opened\n", + fFileNameParameters.Data()); + + Int_t i=0; + // Read parameter file line-by-line and skip empty line and comments + while (fgets(string,maxLeng,fd) != NULL) { + if (string[0] == '\n' ) continue; + if (string[0] == '!' ) continue; + sscanf(string, "%f %f %f %f", + &(*fParameters)(i,0), &(*fParameters)(i,1), + &(*fParameters)(i,2), &(*fParameters)(i,3)); + i++; + //printf("line %d: %s",i,string); + } + fclose(fd); +} - //account correction to the position of IP - Float_t xo,yo,zo ; //Coordinates of the origin - gAlice->Generator()->GetOrigin(xo,yo,zo) ; - TVector3 origin(xo,yo,zo); - dir = dir - origin ; +//____________________________________________________________________________ +void AliPHOSPIDv1::SetParameterCalibration(Int_t i,Float_t param) +{ + // Set parameter "Calibration" i to a value param + if(i>2 || i<0) + Error("SetParameterCalibration","Invalid parameter number: %d",i); + else + (*fParameters)(0,i) = param ; +} - return dir ; +//____________________________________________________________________________ +void AliPHOSPIDv1::SetParameterCpv2Emc(Int_t i, TString axis, Float_t cut) +{ + // Set the parameters to calculate Cpv-to-Emc Distance Cut depending on + // Purity-Efficiency point i + + if(i>2 || i<0) + Error("SetParameterCpv2Emc","Invalid parameter number: %d",i); + else { + axis.ToLower(); + if (axis == "x") (*fParameters)(1,i) = cut; + else if (axis == "z") (*fParameters)(2,i) = cut; + else Error("SetParameterCpv2Emc","Invalid axis name: %s",axis.Data()); + } } + //____________________________________________________________________________ -void AliPHOSPIDv1::PrintRecParticles(Option_t * option) +void AliPHOSPIDv1::SetParameterPhotonBoundary(Int_t i,Float_t param) { - // Print table of reconstructed particles + // Set parameter "Hard photon boundary" i to a value param + if(i>4 || i<0) + Error("SetParameterPhotonBoundary","Invalid parameter number: %d",i); + else + (*fParameters)(14,i) = param ; +} - AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ; +//____________________________________________________________________________ +void AliPHOSPIDv1::SetParameterPi0Boundary(Int_t i,Float_t param) +{ + // Set parameter "Hard pi0 boundary" i to a value param + if(i>1 || i<0) + Error("SetParameterPi0Boundary","Invalid parameter number: %d",i); + else + (*fParameters)(15,i) = param ; +} - TClonesArray * recParticles = gime->RecParticles(BranchName()) ; - - cout << "AliPHOSPIDv1: event "<GetEvNumber() << endl ; - cout << " found " << recParticles->GetEntriesFast() << " RecParticles " << endl ; - - if(strstr(option,"all")) { // printing found TS - - cout << " PARTICLE " - << " Index " << endl ; - - Int_t index ; - for (index = 0 ; index < recParticles->GetEntries() ; index++) { - AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) recParticles->At(index) ; +//_____________________________________________________________________________ +void AliPHOSPIDv1::SetParameterTimeGate(Int_t i, Float_t gate) +{ + // Set the parameter TimeGate depending on Purity-Efficiency point i + if (i>2 || i<0) + Error("SetParameterTimeGate","Invalid Efficiency-Purity choice %d",i); + else + (*fParameters)(3,i)= gate ; +} - cout << setw(10) << rp->Name() << " " - << setw(5) << rp->GetIndexInList() << " " <GetType() << endl; - } - cout << "-------------------------------------------" << endl ; - } +//_____________________________________________________________________________ +void AliPHOSPIDv1::SetParameterToCalculateEllipse(TString particle, TString param, Int_t i, Float_t par) +{ + // Set the parameter "i" that is needed to calculate the ellipse + // parameter "param" for a particle "particle" + particle.ToLower(); + param. ToLower(); + Int_t p= -1; + Int_t offset=0; + + if (particle == "photon") offset=0; + else if (particle == "pi0") offset=5; + else + Error("SetParameterToCalculateEllipse","Wrong particle name: %s (choose from pi0/photon)\n",particle.Data()); + + if (param.Contains("a")) p=4+offset; + else if(param.Contains("b")) p=5+offset; + else if(param.Contains("c")) p=6+offset; + else if(param.Contains("x0"))p=7+offset; + else if(param.Contains("y0"))p=8+offset; + if((i>4)||(i<0)) + Error("SetEllipseParameter", "No parameter with index %d", i) ; + else if(p==-1) + Error("SetEllipseParameter", "No parameter with name %s", param.Data() ) ; + else + (*fParameters)(p,i) = par ; +} + +//____________________________________________________________________________ +void AliPHOSPIDv1::Unload() +{ + AliPHOSGetter * gime = AliPHOSGetter::Instance() ; + gime->PhosLoader()->UnloadRecPoints() ; + gime->PhosLoader()->UnloadTracks() ; + gime->PhosLoader()->UnloadRecParticles() ; } +//____________________________________________________________________________ +void AliPHOSPIDv1::WriteRecParticles() +{ + + AliPHOSGetter *gime = AliPHOSGetter::Instance() ; + TClonesArray * recParticles = gime->RecParticles() ; + recParticles->Expand(recParticles->GetEntriesFast() ) ; + TTree * treeP = gime->TreeP(); + + //First rp + Int_t bufferSize = 32000 ; + TBranch * rpBranch = treeP->Branch("PHOSRP",&recParticles,bufferSize); + rpBranch->SetTitle(BranchName()); + + rpBranch->Fill() ; + + gime->WriteRecParticles("OVERWRITE"); + gime->WritePID("OVERWRITE"); +}