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Macro to select 3He candidates using also hits
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| #if !defined(__CINT__) || defined(__MAKECINT__) | ||
| #include <Riostream.h> | ||
| #include <AliRun.h> | ||
| #include <TParticle.h> | ||
| #include <TString.h> | ||
| #include <TTree.h> | ||
| #include <TArrayF.h> | ||
| #include <AliStack.h> | ||
| #include <AliRunLoader.h> | ||
| #include <TMath.h> | ||
| #include <AliHeader.h> | ||
| #include <AliGenEventHeader.h> | ||
| #include <TH1F.h> | ||
| #include <TNtuple.h> | ||
| #include <TFile.h> | ||
| #include <AliESD.h> | ||
| #include <AliESDVertex.h> | ||
| #include <AliITShit.h> | ||
| #include <AliITSgeomTGeo.h> | ||
| #include <AliTPCTrackHitsV2.h> | ||
| #include <AliTPC.h> | ||
| #endif | ||
|
|
||
| void ReadKineAndHitsHe3() | ||
| { | ||
| if (gAlice) | ||
| { | ||
| delete gAlice; | ||
| gAlice = 0x0; | ||
| } | ||
|
|
||
| AliRunLoader *rl = AliRunLoader::Open("galice.root"); | ||
| if (rl == 0x0) | ||
| { | ||
| std::cerr << "Can not open session" << std::endl; | ||
| return; | ||
| } | ||
|
|
||
| rl->LoadHeader(); | ||
| rl->LoadKinematics(); | ||
| rl->LoadHits(); | ||
| Int_t nev = rl->GetNumberOfEvents(); | ||
| int triggerPDG = AliPID::ParticleCode(AliPID::kHe3); | ||
| for (Int_t iev = 0; iev < nev; iev++){ | ||
| rl->GetEvent(iev); | ||
| AliStack *stack = rl->Stack(); | ||
| TArrayF mcVertex(3); | ||
| rl->GetHeader()->GenEventHeader()->PrimaryVertex(mcVertex); | ||
| TTree *treek = (TTree *)rl->TreeK(); | ||
| TTree *treeHits = (TTree *)rl->GetTreeH("ITS",kFALSE); | ||
| TTree *treeHtpc = (TTree *)rl->GetTreeH("TPC",kFALSE); | ||
| TClonesArray *arritsh=new TClonesArray("AliITShit",10000); | ||
| treeHits->SetBranchAddress("ITS",&arritsh); | ||
| AliTPCTrackHitsV2 *htpc= new AliTPCTrackHitsV2; | ||
| TBranch* branchHtpc=treeHtpc->GetBranch("TPC2"); | ||
| branchHtpc->SetAddress(&htpc); | ||
|
|
||
| Int_t entries = (Int_t)treek->GetEntries(); | ||
| printf("Number of particles = %d\n", entries); | ||
| for (Int_t iPart = 0; iPart < entries; iPart++){ | ||
| TParticle *part = (TParticle *)stack->Particle(iPart); | ||
| Int_t pdgCode = part->GetPdgCode(); | ||
| if (pdgCode == triggerPDG && stack->IsSecondaryFromMaterial(iPart)) { | ||
| Double_t rap=part->Y(); | ||
| if(TMath::Abs(rap)<1.){ | ||
| Float_t vx = part->Vx(); | ||
| Float_t vy = part->Vy(); | ||
| Float_t vz = part->Vz(); | ||
| Float_t r = TMath::Sqrt(vx * vx + vy * vy); | ||
| Double_t minRadius=99999.; | ||
| Double_t maxRadius=0.; | ||
| Int_t hitInLay=0; | ||
| Int_t nPrimTracks =(Int_t) treeHits->GetEntries(); | ||
| Int_t nPrimTracksTPC =(Int_t) treeHtpc->GetEntries(); | ||
| for(Int_t iPrimTrack=0; iPrimTrack<nPrimTracks; iPrimTrack++){ | ||
| Int_t nBytes = treeHits->GetEvent(iPrimTrack); | ||
| if (nBytes <= 0) continue; | ||
| Int_t nHits = arritsh->GetEntriesFast(); | ||
| for (Int_t ih=0; ih<nHits; ih++) { | ||
| AliITShit *itsHit=(AliITShit*)arritsh->UncheckedAt(ih); | ||
| if(itsHit->GetTrack()==iPart){ | ||
| Double_t xg,yg,zg,tof; | ||
| itsHit->GetPositionG(xg,yg,zg,tof); | ||
| Int_t lay,lad,det; | ||
| AliITSgeomTGeo::GetModuleId(itsHit->GetModule(),lay,lad,det); | ||
| Double_t rhit= TMath::Sqrt(xg*xg+yg*yg); | ||
| if(rhit<minRadius) minRadius=rhit; | ||
| if(rhit>maxRadius) maxRadius=rhit; | ||
| hitInLay|=(1<<(lay-1)); | ||
| // printf("Hit %d %d track %d module %d lay %d coord = %f %f %f rad=%f\n",iPrimTrack,ih,itsHit->GetTrack(),itsHit->GetModule(),lay,xg,yg,zg,rhit); | ||
| } | ||
| } | ||
| } | ||
| Int_t nITShits=0; | ||
| for(Int_t iLay=0; iLay<6; iLay++) if(hitInLay & (1<<iLay)) nITShits++; | ||
| Int_t nTPChits=0; | ||
| for(Int_t iPrimTrack=0; iPrimTrack<nPrimTracksTPC; iPrimTrack++){ | ||
| Int_t nBytes = branchHtpc->GetEvent(iPrimTrack); | ||
| if (nBytes <= 0) continue; | ||
| TClonesArray* arrtpch=htpc->GetArray(); | ||
| Int_t nHtpc = arrtpch->GetEntriesFast(); | ||
| for (Int_t ih=0; ih<nHtpc; ih++) { | ||
| AliTPChit *tpcHit=(AliTPChit*)arrtpch->UncheckedAt(ih); | ||
| if(tpcHit->GetTrack()==iPart){ | ||
| Double_t xg=tpcHit->X(); | ||
| Double_t yg=tpcHit->Y(); | ||
| Double_t zg=tpcHit->Z(); | ||
| Double_t rhit= TMath::Sqrt(xg*xg+yg*yg); | ||
| if(rhit>50) { // Skip hits at interaction point | ||
| // printf("Hit %d in TPC = %f %f\n",ih,rhit,zg); | ||
| if(rhit<minRadius) minRadius=rhit; | ||
| if(rhit>maxRadius) maxRadius=rhit; | ||
| nTPChits++; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| printf("Particle with pdg=%d and y=%f and r=%f z=%f FOUND IN KINE TREE\n",pdgCode,rap,r,vz); | ||
| printf("nITS hits = %d nTPChits = %d min hit radius = %f max hit radius = %f\n",nITShits,nTPChits,minRadius,maxRadius); | ||
| if(nITShits>=2 && maxRadius>140){ | ||
| printf("--> accepted\n"); | ||
| delete arritsh; | ||
| delete htpc; | ||
| exit(EXIT_SUCCESS); | ||
| }else{ | ||
| printf("--> not enough hits and length\n"); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| delete arritsh; | ||
| delete htpc; | ||
| } | ||
| exit(EXIT_FAILURE); | ||
| } |