/*
-//0. Libraries to lod
+This class provides the calibration of the time dependence of the TPC gain due to pressure and temperature changes etc.
+
+
+//0. Libraries to load
gSystem->Load("libANALYSIS");
gSystem->Load("libSTAT");
gSystem->Load("libTPCcalib");
TFile fcalib("CalibObjects.root");
TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib");
AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain");
-TGraphErrors * gr = AliTPCcalibBase::FitSlices(gain->GetHistGainTime(),0,1,2000,10,0.2,0.8);
-gain->GetHistGainTime()->Projection(0,1)->Draw("colz")
-gr->SetMarkerStyle(25);
-gr->Draw("lp")
+TGraphErrors * gr = gain->GetGraphGainVsTime(0,1000)
+// gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6)
+TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1)
+GainTime->GetXaxis()->SetTimeDisplay(kTRUE)
+GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}")
+GainTime->Draw("colz")
//
// MakeSlineFit example
//
-AliSplineFit fit;
-fit.SetGraph(gr)
-fit->SetMinPoints(gr->GetN()+1);
-fit->InitKnots(gr,2,0,0.001)
-fit.SplineFit(0)
-fit.MakeDiffHisto(gr)->Draw();
+AliSplineFit *fit = AliTPCcalibTimeGain::MakeSplineFit(gr)
+
TGraph * grfit = fit.MakeGraph(gr->GetX()[0],gr->GetX()[gr->GetN()-1],50000,0);
gr->SetMarkerStyle(25);
-gr->Draw("alp");
+gr->Draw("lp");
grfit->SetLineColor(2);
grfit->Draw("lu");
+//
+// QA - dE/dx resoultion as a function of time
+//TCa
+
+TGraph * grSigma = AliTPCcalibBase::FitSlicesSigma(gain->GetHistGainTime(),0,1,1800,5)
+
+TCanvas *c1 = new TCanvas("c1","transparent pad",200,10,700,500);
+ TPad *pad1 = new TPad("pad1","",0,0,1,1);
+ TPad *pad2 = new TPad("pad2","",0,0,1,1);
+ pad2->SetFillStyle(4000); //will be transparent
+ pad1->Draw();
+ pad1->cd();
+
+GainTime->Draw("colz")
+gr->Draw("lp")
+
+
+
+ c1->cd();
+ Double_t ymin = -0.04;
+ Double_t ymax = 0.12;
+Double_t dy = (ymax-ymin)/0.8;
+Double_t xmin = GainTime->GetXaxis()->GetXmin()
+Double_t xmax = GainTime->GetXaxis()->GetXmax()
+Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right
+pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy);
+ pad2->Draw();
+ pad2->cd();
+grSigma->SetLineColor(2);
+grSigma->SetLineWidth(2);
+grSigma->Draw("lp")
+TGaxis *axis = new TGaxis(xmax,ymin,xmax,ymax,ymin,ymax,50510,"+L");
+ axis->SetLabelColor(kRed);
+ axis->SetTitle("dE/dx resolution #sigma_{dE/dx}");
+ axis->Draw();
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+ ----> make Attachment study
+
+TFile fcalib("CalibObjects40366b.root");
+TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib");
+AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain");
+TGraphErrors * grAttach = gain->GetGraphAttachment(2000,4)
+
+TCanvas *c1 = new TCanvas("c1","transparent pad",200,10,700,500);
+ TPad *pad1 = new TPad("pad1","",0,0,1,1);
+ TPad *pad2 = new TPad("pad2","",0,0,1,1);
+ pad2->SetFillStyle(4000); //will be transparent
+ pad1->Draw();
+ pad1->cd();
+
+gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6)
+TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1)
+GainTime->GetXaxis()->SetTimeDisplay(kTRUE)
+GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}")
+GainTime->Draw("colz")
+//gr->Draw("lp")
+
+ c1->cd();
+ Double_t ymin = -0.001;
+ Double_t ymax = 0.001;
+Double_t dy = (ymax-ymin)/0.8;
+Double_t xmin = GainTime->GetXaxis()->GetXmin()
+Double_t xmax = GainTime->GetXaxis()->GetXmax()
+Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right
+pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy);
+ pad2->Draw();
+ pad2->cd();
+grAttach->SetLineColor(2);
+grAttach->SetLineWidth(2);
+grAttach->Draw("lp")
+TGaxis *axis = new TGaxis(xmax,ymin,xmax,ymax,ymin,ymax,50510,"+L");
+ axis->SetLabelColor(kRed);
+ axis->SetTitle("attachment coefficient b");
+ axis->Draw();
+
+
*/
fHistDeDxTotal(0),
fIntegrationTimeDeDx(0),
fMIP(0),
+ fUseMax(0),
fLowerTrunc(0),
fUpperTrunc(0),
fUseShapeNorm(0),
fUsePosNorm(0),
fUsePadNorm(0),
+ fUseCookAnalytical(0),
fIsCosmic(0),
fLowMemoryConsumption(0)
{
+ //
+ // Default constructor
+ //
AliInfo("Default Constructor");
}
fHistDeDxTotal(0),
fIntegrationTimeDeDx(0),
fMIP(0),
+ fUseMax(0),
fLowerTrunc(0),
fUpperTrunc(0),
fUseShapeNorm(0),
fUsePosNorm(0),
fUsePadNorm(0),
+ fUseCookAnalytical(0),
fIsCosmic(0),
fLowMemoryConsumption(0)
- {
-
+{
+ //
+ // No default constructor
+ //
SetName(name);
SetTitle(title);
-
+
AliInfo("Non Default Constructor");
-
+
fIntegrationTimeDeDx = deltaIntegrationTimeGain;
-
+
Double_t deltaTime = EndTime - StartTime;
-
- // main histogram for time dependence: dE/dx, time, type (1-muon cosmic,2-pion beam data), meanDriftlength, momenta (only filled if enough space is available)
+
+ // main histogram for time dependence: dE/dx, time, type (1-muon cosmic,2-pion beam data), meanDriftlength, momenta (only filled if enough space is available), run number
Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain);
- Int_t binsGainTime[5] = {100, timeBins, 2, 25, 200};
- Double_t xminGainTime[5] = {0.5, StartTime, 0.5, 0, 0.1};
- Double_t xmaxGainTime[5] = { 4, EndTime, 2.5, 250, 50};
- fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx;dEdx,time,type,driftlength,momenta",5,binsGainTime,xminGainTime,xmaxGainTime);
+ Int_t binsGainTime[6] = {150, timeBins, 2, 25, 200, 10000000};
+ Double_t xminGainTime[6] = {0.5, StartTime, 0.5, 0, 0.1, -0.5};
+ Double_t xmaxGainTime[6] = { 8, EndTime, 2.5, 250, 50, 9999999.5};
+ fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number;dEdx",6,binsGainTime,xminGainTime,xmaxGainTime);
BinLogX(fHistGainTime, 4);
//
- fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,1000);
+ fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8);
BinLogX(fHistDeDxTotal);
// default values for dE/dx
fMIP = 50.;
- fLowerTrunc = 0.0;
- fUpperTrunc = 0.7;
+ fUseMax = kTRUE;
+ fLowerTrunc = 0.02;
+ fUpperTrunc = 0.6;
fUseShapeNorm = kTRUE;
fUsePosNorm = kFALSE;
fUsePadNorm = kFALSE;
+ fUseCookAnalytical = kFALSE;
//
fIsCosmic = kTRUE;
fLowMemoryConsumption = kTRUE;
//
- }
+}
AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){
//
+ // Destructor
//
- //
+ delete fHistGainTime;
+ delete fGainVsTime;
+ delete fHistDeDxTotal;
}
void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) {
-
- AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
- if (!ESDfriend) {
+ //
+ // Process in case of cosmic event
+ //
+ AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
+ if (!esdFriend) {
Printf("ERROR: ESDfriend not available");
return;
}
//
UInt_t time = event->GetTimeStamp();
Int_t ntracks = event->GetNumberOfTracks();
+ Int_t runNumber = event->GetRunNumber();
//
// track loop
//
AliESDtrack *track = event->GetTrack(i);
if (!track) continue;
-
+ AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i);
+ if (!friendTrack) continue;
const AliExternalTrackParam * trackIn = track->GetInnerParam();
- const AliExternalTrackParam * trackOut = track->GetOuterParam();
+ const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut();
if (!trackIn) continue;
if (!trackOut) continue;
// calculate necessary track parameters
Double_t meanP = trackIn->GetP();
Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
- Int_t NclsDeDx = track->GetTPCNcls();
+ Int_t nclsDeDx = track->GetTPCNcls();
// exclude tracks which do not look like primaries or are simply too short or on wrong sectors
- if (NclsDeDx < 60) continue;
+ if (nclsDeDx < 60) continue;
if (TMath::Abs(trackIn->GetTgl()) > 1) continue;
if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue;
// Get seeds
- AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
- if (!friendTrack) continue;
TObject *calibObject;
AliTPCseed *seed = 0;
for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
}
if (seed) {
- Double_t TPCsignalMax = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,1,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0);
- fHistDeDxTotal->Fill(meanP, TPCsignalMax);
+ Double_t tpcSignal = GetTPCdEdx(seed);
+ if (nclsDeDx > 100) fHistDeDxTotal->Fill(meanP, tpcSignal);
//
if (fLowMemoryConsumption) {
if (meanP < 20) continue;
meanP = 30; // set all momenta to one in order to save memory
}
//dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
- Double_t vec[5] = {TPCsignalMax,time,1,meanDrift,meanP};
+ Double_t vec[6] = {tpcSignal,time,1,meanDrift,meanP,runNumber};
fHistGainTime->Fill(vec);
}
void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) {
-
- AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
- if (!ESDfriend) {
+ //
+ // Process in case of beam event
+ //
+ AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
+ if (!esdFriend) {
Printf("ERROR: ESDfriend not available");
return;
}
//
UInt_t time = event->GetTimeStamp();
Int_t ntracks = event->GetNumberOfTracks();
+ Int_t runNumber = event->GetRunNumber();
//
// track loop
//
AliESDtrack *track = event->GetTrack(i);
if (!track) continue;
+ AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i);
+ if (!friendTrack) continue;
const AliExternalTrackParam * trackIn = track->GetInnerParam();
- const AliExternalTrackParam * trackOut = track->GetOuterParam();
+ const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut();
if (!trackIn) continue;
if (!trackOut) continue;
// calculate necessary track parameters
Double_t meanP = trackIn->GetP();
Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
- Int_t NclsDeDx = track->GetTPCNcls();
+ Int_t nclsDeDx = track->GetTPCNcls();
// exclude tracks which do not look like primaries or are simply too short or on wrong sectors
- if (NclsDeDx < 60) continue;
+ if (nclsDeDx < 60) continue;
if (TMath::Abs(trackIn->GetTgl()) > 1) continue;
if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue;
// Get seeds
- AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
- if (!friendTrack) continue;
TObject *calibObject;
AliTPCseed *seed = 0;
for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
}
if (seed) {
- Double_t TPCsignalMax = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,1,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0);
- fHistDeDxTotal->Fill(meanP, TPCsignalMax);
- //
if (fLowMemoryConsumption) {
if (meanP > 0.5 || meanP < 0.4) continue;
meanP = 0.45; // set all momenta to one in order to save memory
}
+ Double_t tpcSignal = GetTPCdEdx(seed);
+ fHistDeDxTotal->Fill(meanP, tpcSignal);
+ //
//dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
- Double_t vec[5] = {TPCsignalMax,time,1,meanDrift,meanP};
+ Double_t vec[6] = {tpcSignal,time,2,meanDrift,meanP,runNumber};
fHistGainTime->Fill(vec);
}
}
-void AliTPCcalibTimeGain::Analyze() {
+Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) {
//
+ // calculate tpc dEdx
//
+ Double_t signal = 0;
+ //
+ if (!fUseCookAnalytical) {
+ signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0);
+ } else {
+ signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax);
+ }
+ //
+ return signal;
+}
+
+
+void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) {
+ //
+ // Analyze results of calibration
//
if (fIsCosmic) {
fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics
fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions
}
//
- fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,2000,10);
+ fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10);
//
return;
}
-Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) {
+TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) {
+ //
+ // Analyze results and get the graph
+ //
+ if (runNumber == 0) {
+ if (!fGainVsTime) {
+ AnalyzeRun(minEntries);
+ }
+ } else {
+ // 1st check if the current run was cosmic or beam event
+ fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber);
+ AnalyzeRun(minEntries);
+ }
+ if (fGainVsTime->GetN() == 0) return 0;
+ return fGainVsTime;
+}
+Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) {
+ //
+ // merge component
+ //
TIterator* iter = li->MakeIterator();
AliTPCcalibTimeGain* cal = 0;
}
+AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) {
+ //
+ // make spline fit of gain
+ //
+ AliSplineFit *fit = new AliSplineFit();
+ fit->SetGraph(graph);
+ fit->SetMinPoints(graph->GetN()+1);
+ fit->InitKnots(graph,2,0,0.001);
+ fit->SplineFit(0);
+ return fit;
+
+}
-void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) {
- // Method for the correct logarithmic binning of histograms
+TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) {
+ //
+ // For each time bin the driftlength-dependence of the signal is fitted.
+ //
+ TH3D * hist = fHistGainTime->Projection(1, 0, 3);
+ Double_t *xvec = new Double_t[hist->GetNbinsX()];
+ Double_t *yvec = new Double_t[hist->GetNbinsX()];
+ Double_t *xerr = new Double_t[hist->GetNbinsX()];
+ Double_t *yerr = new Double_t[hist->GetNbinsX()];
+ Int_t counter = 0;
+ TH2D * projectionHist = 0x0;
+ //
+ for(Int_t i=1; i < hist->GetNbinsX(); i++) {
+ Int_t nsum=0;
+ Int_t imin = i;
+ Int_t imax = i;
+ for (Int_t idelta=0; idelta<nmaxBin; idelta++){
+ //
+ imin = TMath::Max(i-idelta,1);
+ imax = TMath::Min(i+idelta,hist->GetNbinsX());
+ nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1));
+ if (nsum==0) break;
+ if (nsum>minEntries) break;
+ }
+ if (nsum<minEntries) continue;
+ //
+ hist->GetXaxis()->SetRange(imin,imax);
+ projectionHist = (TH2D*)hist->Project3D("yzNUFNOF");
+ //
+ TObjArray arr;
+ projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr);
+ TH1D * histAttach = (TH1D*)arr.At(1);
+ TF1 pol1("polynom1","pol1",10,240);
+ histAttach->Fit(&pol1,"QNR");
+ xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax));
+ yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0);
+ xerr[counter] = 0;
+ yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0);
+ counter++;
+ //
+ delete projectionHist;
+ }
+
+ TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr);
+ delete [] xvec;
+ delete [] yvec;
+ delete [] xerr;
+ delete [] yerr;
+ delete hist;
+ return graphErrors;
+
+}
+
+
+
+void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) {
+ //
+ // Method for the correct logarithmic binning of histograms
+ //
TAxis *axis = h->GetAxis(axisDim);
int bins = axis->GetNbins();
Double_t from = axis->GetXmin();
Double_t to = axis->GetXmax();
- Double_t *new_bins = new Double_t[bins + 1];
+ Double_t *newBins = new Double_t[bins + 1];
- new_bins[0] = from;
+ newBins[0] = from;
Double_t factor = pow(to/from, 1./bins);
for (int i = 1; i <= bins; i++) {
- new_bins[i] = factor * new_bins[i-1];
+ newBins[i] = factor * newBins[i-1];
}
- axis->Set(bins, new_bins);
- delete new_bins;
+ axis->Set(bins, newBins);
+ delete[] newBins;
}
void AliTPCcalibTimeGain::BinLogX(TH1 *h) {
-
+ //
// Method for the correct logarithmic binning of histograms
-
+ //
TAxis *axis = h->GetXaxis();
int bins = axis->GetNbins();
Double_t from = axis->GetXmin();
Double_t to = axis->GetXmax();
- Double_t *new_bins = new Double_t[bins + 1];
+ Double_t *newBins = new Double_t[bins + 1];
- new_bins[0] = from;
+ newBins[0] = from;
Double_t factor = pow(to/from, 1./bins);
for (int i = 1; i <= bins; i++) {
- new_bins[i] = factor * new_bins[i-1];
+ newBins[i] = factor * newBins[i-1];
}
- axis->Set(bins, new_bins);
- delete new_bins;
+ axis->Set(bins, newBins);
+ delete[] newBins;
}
void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) {
+ //
+ // Fit the bethe bloch params
+ //
//{0.0762*MIP,10.632,1.34e-05,1.863,1.948}
const Double_t sigma = 0.06;
foKaon->SetParameters(ini);
foProton->SetParameters(ini);
- TCanvas *CanvCheck1 = new TCanvas();
+ TCanvas *canvCheck1 = new TCanvas();
hist->Draw("colz");
foElectron->Draw("same");
foMuon->Draw("same");
TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000);
funcAlephD->SetParameters(ini);
- TCanvas *CanvCheck2 = new TCanvas();
+ TCanvas *canvCheck2 = new TCanvas();
histBG->Draw();
//FitSlices
foKaon->SetParameters(ini);
foProton->SetParameters(ini);
- TCanvas *CanvCheck3 = new TCanvas();
+ TCanvas *canvCheck3 = new TCanvas();
hist->Draw("colz");
foElectron->Draw("same");
foMuon->Draw("same");
foKaon->Draw("same");
foProton->Draw("same");
- CanvCheck1->Print();
- CanvCheck2->Print();
- CanvCheck3->Print();
+ canvCheck1->Print();
+ canvCheck2->Print();
+ canvCheck3->Print();
return;
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff