X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=HMPID%2FAliHMPIDTracker.cxx;h=56a0fcb0fbd39f61d2f99d0a36693d68084db303;hb=fa26e7166fbc200da7e68f324cb9438b80af4f9a;hp=4a14ac1e61f9389a884a776bbe4b3af9848b66a1;hpb=3c6274c1849fbc3ebd7554982d9948ddf9430756;p=u%2Fmrichter%2FAliRoot.git diff --git a/HMPID/AliHMPIDTracker.cxx b/HMPID/AliHMPIDTracker.cxx index 4a14ac1e61f..56a0fcb0fbd 100644 --- a/HMPID/AliHMPIDTracker.cxx +++ b/HMPID/AliHMPIDTracker.cxx @@ -1,12 +1,29 @@ #include "AliHMPIDTracker.h" //class header #include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack() #include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack() -#include "AliHMPIDRecon.h" //PropagateBack() -#include //PropagateBack() +#include "AliHMPIDRecon.h" //Recon() +#include //PropagateBack(),Recon() +#include //Intersect() #include //GetTrackPoint(),PropagateBack() #include //GetTrackPoint() #include //GetTrackPoint() +#include //PropageteBack() +#include //PropageteBack() +//. +// HMPID base class fo tracking +//. +//. +//. ClassImp(AliHMPIDTracker) +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +AliHMPIDTracker::AliHMPIDTracker():AliTracker() +{ +// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster +// +// + fClu=new TObjArray(AliHMPIDParam::kMaxCh+1); fClu->SetOwner(kTRUE); + for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i); +}//ctor //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const { @@ -16,87 +33,89 @@ Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const // point- reference to the object where to store the point // Returns: status of operation if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track. if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack() - Int_t iCham=idx/1000000; - Int_t iClu=idx%1000000; - point.SetVolumeID(AliAlignObj::LayerToVolUID(AliAlignObj::kHMPID,iCham-1));//layer and chamber number - AliHMPID *pRich=((AliHMPID*)gAlice->GetDetector("HMPID")); - AliHMPIDCluster *pClu=(AliHMPIDCluster*)pRich->CluLst(iCham)->UncheckedAt(iClu);//get pointer to cluster + Int_t iCham=idx/1000000; Int_t iClu=idx%1000000; + point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham-1));//layer and chamber number + TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham]; + AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster Double_t mars[3]; AliHMPIDParam::Instance()->Lors2Mars(iCham,pClu->X(),pClu->Y(),mars); point.SetXYZ(mars[0],mars[1],mars[2]); return kTRUE; -} +}//GetTrackPoint() +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc) +{ +// Static method to find intersection in between given track and HMPID chambers +// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm] +// Returns: intersected chamber ID or -1 + AliHMPIDParam *pParam=AliHMPIDParam::Instance(); + Float_t xRa=0,yRa=0,theta=0,phi=0; //track intersection at PC and angles at RAD, LORS + for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop + Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Point(i,p1,AliHMPIDParam::kRad); //point & norm for middle of radiator plane + Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Point(i,p2,AliHMPIDParam::kPc); //point & norm for entrance to PC plane + if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue; //try to intersect track with the middle of radiator + if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue; //try to intersect track with PC + pParam->Mars2LorsVec(i,n1,theta,phi); //track angles at RAD + pParam->Mars2Lors (i,p1,xRa,yRa); //TRKxRAD position + pParam->Mars2Lors (i,p2,xPc,yPc); //TRKxPC position + if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kFALSE) continue; //not in active area + pTrk->SetHMPIDtrk (xRa,yRa,theta,phi); //store track intersection info + pTrk->SetHMPIDcluIdx (i,0); + return i; + } //chambers loop + return -1; //no intersection with HMPID chambers +}//IntTrkCha() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree) { -// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control +// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event. // Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR() // Returns: error code (currently ignored in AliReconstruction::RunTraking()) - AliDebug(1,"Start."); pCluTree->GetEntry(0); AliDebug(1,"Stop."); return 0; -} + for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i])); + pCluTree->GetEntry(0); + return 0; +}//LoadClusters() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -Int_t AliHMPIDTracker::Recon(AliESD *pESD,TObjArray *pCluAll) +Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd) { -// Interface callback methode invoked by AliRecontruction::RunTracking() during tracking after TOF. It's done just once per event -// Arguments: pESD - pointer to Event Summary Data class instance which contains a list of tracks -// Returns: error code, 0 if no errors - Int_t iNtracks=pESD->GetNumberOfTracks(); AliDebugClass(1,Form("Start with %i tracks",iNtracks)); - AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor - - AliHMPIDParam *pParam=AliHMPIDParam::Instance(); - - for(Int_t iTrk=0;iTrkGetTrack(iTrk); //get next reconstructed track - - Float_t xRa=0,yRa=0,xPc=0,yPc=0,th=0,ph=0; //track intersection point and angles, LORS - Int_t iCh=-1; //intersected chamber - for(Int_t i=0;i<7;i++){ //chambers loop - Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Lors2Mars(i,0,0,p1,AliHMPIDParam::kRad); //point & norm for RAD - Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Lors2Mars(i,0,0,p2,AliHMPIDParam::kPc); //point & norm for PC - - if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue; //try to intersect track with the middle of radiator - if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue; //try to intersect track with PC - - pParam->Mars2LorsVec(i,n1,th,ph); //track angles - pParam->Mars2Lors (i,p1,xRa,yRa); //TRKxRAD position - pParam->Mars2Lors (i,p2,xPc,yPc); //TRKxPC position - - if(AliHMPIDDigit::IsInside(xPc,yPc)==kFALSE) continue; //not in active area - iCh=i; - break; - }//chambers loop - - if(iCh==-1) continue; //no intersection at all, go after next track - - TClonesArray *pCluLst=(TClonesArray *)pCluAll->At(iCh); //get clusters list for intersected chamber - - Double_t dMin=999; //distance between track-PC intersection point and current cluster - Int_t iMip=-1; //index of cluster nearest to intersection point - for(Int_t iClu=0;iCluGetEntries();iClu++){ //clusters loop for intersected chamber - AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluLst->At(iClu); //get pointer to current cluster - if(pClu->Q()<100) continue; //QDC is incompartible with mip, go after another one - - Float_t dX=xPc-pClu->X(); //distance between current cluster and intersection point - Float_t dY=yPc-pClu->Y(); - Float_t d =TMath::Sqrt(dX*dX+dY*dY); - - if( d < dMin) {iMip=iClu; dMin=d;} //current cluster is closer, overwrite data for min cluster - }//clusters loop for intersected chamber +// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event +// Agruments: pEsd - pointer to ESD +// Returns: error code + AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 21 TF1 + AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 7 TF1 + if(!pNmeanEnt) AliFatal("No Nmean C6F14 "); + if(!pQthreEnt) AliFatal("No Qthre"); - pTrk->SetHMPIDtrk (xPc,yPc,th,ph); //store track info - if(iMip==-1) {pTrk->SetHMPIDsignal (kMipQdcCut); continue;} //no clusters with QDC more the threshold at all - - AliHMPIDCluster *pMipClu=(AliHMPIDCluster*)pCluLst->At(iMip); //take mip cluster - - pTrk->SetHMPIDmip (pMipClu->X(),pMipClu->Y(),pMipClu->Q()); //store mip info - if(dMin>1) {pTrk->SetHMPIDsignal (kMipDistCut); continue;} //closest cluster with enough charge is still too far - pTrk->SetHMPIDcluIdx (iCh,iMip); //set mip cluster index - recon.SetTrack(th,ph,xRa,yRa); Int_t iNphot=0; //initialize track parameters - pTrk->SetHMPIDsignal (recon.CkovAngle(pCluLst,iNphot)); //search for Cerenkov angle for this track - pTrk->SetHMPIDchi2 (recon.CkovSigma2()); //error squared - pTrk->SetHMPIDmip (pMipClu->X(),pMipClu->Y(),pMipClu->Q(),iMip); //info on mip cluster + n. phot. - }//ESD tracks loop - AliDebugClass(1,"Stop pattern recognition"); - return 0; // error code: 0=no error; + return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject()); }//PropagateBack() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean) +{ +// Static method to reconstruct Theta Ckov for all valid tracks of a given event. +// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time) +// Returns: error code, 0 if no errors + AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor + Float_t xPc,yPc; + for(Int_t iTrk=0;iTrkGetNumberOfTracks();iTrk++){ //ESD tracks loop + AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track + Int_t cham=IntTrkCha(pTrk,xPc,yPc); //get chamber intersected by this track + if(cham<0) continue; //no intersection at all, go after next track + Double_t nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber + recon.SetImpPC(xPc,yPc); //store track impact to PC + recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),nmean); //search for Cerenkov angle of this track + } //ESD tracks loop + return 0; // error code: 0=no error; +}//Recon() +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +Int_t AliHMPIDTracker::ReconHiddenTrk(Int_t iCh,AliESDtrack *pTrk,TClonesArray *pCluLst,TObjArray *pNmean) +{ +// Static method to reconstruct Theta Ckov for all valid tracks of a given event. +// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time) +// Returns: error code, 0 if no errors + AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor + Double_t nmean=((TF1*)pNmean->At(3*iCh))->Eval(0); //C6F14 Nmean for this chamber + if(pCluLst->GetEntriesFast()<4) return 1; //min 4 clusters (3 + 1 mip) to find a ring! + if(recon.CkovHiddenTrk(pTrk,pCluLst,nmean)) return 0; //search for track parameters and Cerenkov angle of this track + else return 1; // error code: 0=no error,1=fit not performed; +}//Recon() +//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++