HLT/exa/trigger_pp.C

   1 // $Id$
   2
   3 void trigger_pp(char *outfile="results.root")
   4 {
   5
   6   TNtuple *ntuppel = new TNtuple("ntuppel","","pt:eta:xvert:yvert:zvert:nhits:px:py:pz:event");
   7   Float_t meas[10];
   8
   9   for(int event=0; event<1; event++)
  10     {
  11       char fname[256];
  12       sprintf(fname,"/prog/alice/data/Rawdata/1_patch/pp/pileups/recon_%d/tracks.raw",event);
  13       //sprintf(fname,"/prog/alice/data/Rawdata/1_patch/pp/recon_%d/tracks.raw",event);
  14
  15       //Get the tracks:
  16       AliL3TrackArray *tracks = new AliL3TrackArray();
  17       AliL3FileHandler *file = new AliL3FileHandler();
  18       file->SetBinaryInput(fname);
  19       file->Binary2TrackArray(tracks);
  20       file->CloseBinaryInput();
  21       delete file;
  22
  23       sprintf(fname,"/prog/alice/data/Rawdata/1_patch/pp/pileups/recon_%d/",event);
  24       //sprintf(fname,"/prog/alice/data/Rawdata/1_patch/pp/recon_%d/",event);
  25
  26       Int_t ntracks=0;
  27       Double_t xc,yc,zc;
  28       Double_t impact;
  29       AliL3Vertex vertex;
  30       AliL3Fitter *fitter = new AliL3Fitter(&vertex);
  31       fitter->LoadClusters(fname);
  32       //fitter->NoVertex();
  33
  34       AliL3TrackArray *ftracks = new AliL3TrackArray();
  35
  36       for(int i=0; i<tracks->GetNTracks(); i++)
  37         {
  38           track = (AliL3Track*)tracks->GetCheckedTrack(i);
  39           if(!track) continue;
  40           track->CalculateHelix();
  41           //cout<<"Pt "<<track->GetPt()<<" eta "<<track->GetPseudoRapidity()<<" Nhits "<<track->GetNHits()<<endl;
  42           //cout<<"Before second fit; pt "<<track->GetPt()<<" firstpoint "<<track->GetFirstPointX()<<" "<<track->GetFirstPointY()<<" "<<track->GetFirstPointZ()<<endl;
  43           fitter->FitHelix(track);//refit the tracks
  44           track->CalculateHelix();
  45           track->GetClosestPoint(&vertex,xc,yc,zc);
  46           meas[0]=track->GetPt();
  47           meas[1]=track->GetPseudoRapidity();
  48           meas[2]=xc;
  49           meas[3]=yc;
  50           meas[4]=zc;
  51           meas[5]=track->GetNHits();
  52           meas[6]=track->GetPx();
  53           meas[7]=track->GetPy();
  54           meas[8]=track->GetPz();
  55           meas[9]=event;
  56           ntuppel->Fill(meas);
  57           //continue;
  58           if(fabs(track->GetPseudoRapidity())>0.9) continue;
  59           if(track->GetNHits() < 100) continue;
  60           if(track->GetPt()<0.2) continue;
  61           impact = sqrt(xc*xc+yc*yc+zc*zc);
  62           if(fabs(zc)>3) continue;
  63           ftracks->AddLast(track);
  64           cout<<"-------------------------------------"<<endl;
  65           cout<<"Number of hits "<<track->GetNHits()<<endl;
  66           cout<<"Transversal impact "<<sqrt(xc*xc+yc*yc)<<endl;
  67           cout<<"Longitudinal impact "<<zc<<endl;
  68           cout<<"Total impact "<<sqrt(xc*xc+yc*yc+zc*zc)<<endl;
  69           cout<<"xc "<<xc<<" yc "<<yc<<" zc "<<zc<<endl;
  70
  71           //cout<<"After second fit; pt "<<track->GetPt()<<" firstpoint "<<track->GetFirstPointX()<<" "<<track->GetFirstPointY()<<" "<<track->GetFirstPointZ()<<endl;
  72           cout<<"pt "<<track->GetPt()<<" eta "<<track->GetPseudoRapidity()<<endl;
  73
  74           ntracks++;
  75         }
  76       cout<<endl<<"There was "<<ntracks<<" accepted tracks, out of total "<<tracks->GetNTracks()<<" found tracks"<<endl;
  77
  78       display(ftracks,fname);
  79       delete tracks;
  80       delete fitter;
  81       delete ftracks;
  82     }
  83
  84   TFile *rfile = TFile::Open(outfile,"RECREATE");
  85   ntuppel->Write();
  86   rfile->Close();
  87   delete ntuppel;
  88
  89 }
  90
  91 void display(AliL3TrackArray *tracks,char *path)
  92 {
  93   int slice[2]={0,35};
  94   d = new AliL3Display(slice);
  95   d->Setup("tracks.raw",path);
  96   d->SetTracks(tracks);
  97   //d->DisplayClusters();
  98     d->DisplayAll();
  99     //d->DisplayTracks();
 100
 101 }
 102
 103 void ploteff()
 104 {
 105   gROOT->LoadMacro("XFunct.C");
 106   //double x[6]={1,2,4,6,8,10};
 107   //double y[6]={0.873684,1.01379,1.17751,1.28614,1.31638,1.32022};
 108
 109   double x[6]={0.8,1.6,3.2,4.8,6.4,8};
 110   double y[6]={0.497006,0.88024,1.19162,1.23952,1.39521,1.40719};//->sigmas
 111
 112
 113   TGraph *gr = new TGraph(6,x,y);
 114   c1 = new TCanvas("c1","",2);
 115   SetCanvasOptions(c1);
 116   gr->SetMarkerStyle(20);
 117   gr->SetTitle("");
 118   gr->Draw("APL");
 119   gr->GetHistogram()->SetXTitle("Z_{CUT} [x #sigma_{Z}]");
 120   gr->GetHistogram()->SetYTitle("Efficiency");
 121   SetTGraphOptions(gr);
 122 }
 123
 124 double geteff(char *infile,char *singlefile,double cut)
 125 {
 126   gROOT->LoadMacro("XFunct.C");
 127   gStyle->SetStatColor(10);
 128   gStyle->SetOptFit(1);
 129   Int_t pileups[25],single[25];
 130   file = TFile::Open(infile,"READ");
 131
 132   char name[256];
 133   for(int i=0; i<25; i++)
 134     {
 135       sprintf(name,"zvert < %f && zvert > %f && pt>0.2 && nhits>100 && eta>-0.9 && eta<0.9 && event==%d",cut,-1.*cut,i);
 136       ntuppel->Draw(">>eventlist",name);
 137       int entries = eventlist->GetN();
 138       pileups[i]=entries;
 139     }
 140   //eventlist->Print("all");
 141   file->Close();
 142
 143   file = TFile::Open(singlefile,"read");
 144   for(int i=0; i<25; i++)
 145     {
 146       sprintf(name,"zvert < %f && zvert > %f && pt>0.2 && nhits>100 && eta>-0.9 && eta<0.9 && event==%d",3,-3,i);
 147       ntuppel->Draw(">>eventlist",name);
 148       int entries = eventlist->GetN();
 149       single[i]=entries;
 150     }
 151   file->Close();
 152   double totsingle=0,totpileup=0;
 153   for(int i=0; i<25; i++)
 154     {
 155       totsingle += single[i];
 156       totpileup += pileups[i];
 157     }
 158   double toteff = totpileup/totsingle;
 159   cout<<"Total eff "<<toteff<<endl;
 160
 161   return toteff;
 162 }
 163
 164
 165 void plot(char *infile)
 166 {
 167   gROOT->LoadMacro("XFunct.C");
 168   gStyle->SetStatColor(10);
 169   gStyle->SetOptFit(1);
 170   file = TFile::Open(infile,"READ");
 171
 172   histo = new TH1F("histo","histo",20,-3,3);
 173
 174   vhist = new TH1F("vhist","",20,-3,3);
 175   SetTH1Options(vhist);
 176
 177   char fname[256];
 178   char fname2[256];
 179   for(int ev=0; ev<25; ev++)
 180     {
 181       sprintf(fname,"pt>0.2 && nhits>100 && eta>-0.9 && eta<0.9 && event==%d",ev);
 182       ntuppel->Draw("zvert>>histo",fname,"goff");
 183       float mean = histo->GetMean();
 184       vhist->Fill(mean);
 185       continue;
 186       sprintf(fname2,"(zvert-(%f))>>+vhist",mean);
 187       cout<<fname2<<endl;
 188       ntuppel->Draw(fname2,fname,"goff");
 189     }
 190
 191   c1 = new TCanvas("c1","",2);
 192   SetCanvasOptions(c1);
 193   vhist->SetXTitle("Z* [cm]");
 194   vhist->Draw();
 195   return;
 196   //ntuppel->Draw("zvert>>histo","pt>0.2");
 197   TF1 *f1 = new TF1("f1","gaus",-3,3);
 198   histo->Fit("f1","R");
 199
 200   //histo->Draw();
 201   //file->Close();
 202 }
 203
 204 enum tagprimary {kPrimaryCharged=0x4000};
 205 void LoadEvent(Int_t event=0)
 206 {
 207   //Load the generated particles
 208
 209   gROOT->LoadMacro("$(ALICE_ROOT)/macros/loadlibs.C");
 210   loadlibs();
 211   TFile *rootfile = TFile::Open("/prog/alice/data/pro/25event_pp.root","READ");
 212   gAlice = (AliRun*)rootfile->Get("gAlice");
 213
 214   //  TNtuple *ntup = new TNtuple(
 215
 216   Int_t nparticles = gAlice->GetEvent(event);
 217   Int_t nprim = FindPrimaries(nparticles,0.,0.,0.);
 218   cout<<"Number of primaries "<<nprim<<endl;
 219   int co=0;
 220   for(Int_t i=0; i<nparticles; i++)
 221     {
 222       TParticle *part = gAlice->Particle(i);
 223       if(!part->TestBit(kPrimaryCharged)) continue;
 224       if(fabs(part->Eta())>0.9) continue;
 225       cout<<part->GetName()<<" pt "<<part->Pt()<<" eta "<<part->Eta()<<" xvert "<<part->Vx()<<" yvert "<<part->Vy()<<" zvert "<<part->Vz()<<endl;
 226       co++;
 227     }
 228   cout<<endl<<"Number of primary tracks in the detector: "<<co<<endl;
 229   gAlice=0;
 230   rootfile->Close();
 231
 232 }
 233
 234 Int_t FindPrimaries(Int_t nparticles, Double_t xori, Double_t yori, Double_t zori)
 235 {
 236   //Define primary particles in a pp-event. Code taken from offline.
 237
 238
 239   // cuts:
 240   Double_t vertcut = 0.001;  // cut on the vertex position
 241   Double_t decacut = 3.;     // cut if the part. decays close to the vert.
 242   Double_t timecut = 0.;
 243
 244   TList *listprim = new TList();
 245   listprim->SetOwner(kFALSE);
 246
 247   Int_t nprch1=0;
 248   Int_t nprch2=0;
 249   for(Int_t iprim = 0; iprim<nparticles; iprim++){   //loop on  tracks
 250
 251     TParticle * part = gAlice->Particle(iprim);
 252     char *xxx=strstr(part->GetName(),"XXX");
 253     if(xxx)continue;
 254
 255     TParticlePDG *ppdg = part->GetPDG();
 256     if(TMath::Abs(ppdg->Charge())!=3)continue;  // only charged (no quarks)
 257
 258     Double_t dist=TMath::Sqrt((part->Vx()-xori)*(part->Vx()-xori)+(part->Vy()-yori)*(part->Vy()-yori)+(part->Vz()-zori)*(part->Vz()-zori));
 259     if(dist>vertcut)continue;  // cut on the vertex
 260
 261     if(part->T()>timecut)continue;
 262
 263     Double_t ptot=TMath::Sqrt(part->Px()*part->Px()+part->Py()*part->Py()+part->Pz()*part->Pz());
 264     if(ptot==(TMath::Abs(part->Pz())))continue; // no beam particles
 265
 266     Bool_t prmch = kTRUE;   // candidate primary track
 267     Int_t fidau=part->GetFirstDaughter();  // cut on daughters
 268     Int_t lasdau=0;
 269     Int_t ndau=0;
 270     if(fidau>=0){
 271       lasdau=part->GetLastDaughter();
 272       ndau=lasdau-fidau+1;
 273     }
 274     if(ndau>0){
 275       for(Int_t j=fidau;j<=lasdau;j++){
 276         TParticle *dau=gAlice->Particle(j);
 277         Double_t distd=TMath::Sqrt((dau->Vx()-xori)*(dau->Vx()-xori)+(dau->Vy()-yori)*(dau->Vy()-yori)+(dau->Vz()-zori)*(dau->Vz()-zori));
 278         Double_t rad = TMath::Sqrt((dau->Vx()-xori)*(dau->Vx()-xori)+(dau->Vy()-yori)*(dau->Vy()-yori));
 279         if(distd<decacut)prmch=kFALSE;  // eliminate if the decay is near the vertex
 280         //if(rad < 20)prmch=kFALSE;
 281       }
 282     }
 283
 284     if(prmch){
 285       nprch1++;
 286       part->SetBit(kPrimaryCharged);
 287       listprim->Add(part);    // list of primary particles (before cleanup)
 288     }
 289   }
 290
 291
 292   nprch2=0;
 293   for(Int_t iprim = 0; iprim<nparticles; iprim++){ // cleanup loop
 294     TParticle * part = gAlice->Particle(iprim);
 295     if(part->TestBit(kPrimaryCharged)){
 296       Int_t mothind=part->GetFirstMother();
 297       if(mothind<0)continue;
 298       TParticle *moth=gAlice->Particle(mothind);
 299       TParticle *mothb=(TParticle*)listprim->FindObject(moth);
 300       if(mothb){
 301         listprim->Remove(moth);
 302         moth->ResetBit(kPrimaryCharged);
 303         nprch2++;
 304       }
 305     }
 306   }
 307
 308   listprim->Clear("nodelete");
 309   delete listprim;
 310   return nprch1-nprch2;
 311
 312 }