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3c6274c1 | 1 | #include "AliHMPIDTracker.h" //class header |
2 | #include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack() | |
3 | #include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack() | |
59d9d4b3 | 4 | #include "AliHMPIDRecon.h" //Recon() |
57fcdc2b | 5 | #include "AliHMPIDReconHTA.h" //ReconHTA() |
6 | #include <AliESDEvent.h> //PropagateBack(),Recon() | |
7 | #include <AliESDtrack.h> //Intersect() | |
d3da6dc4 | 8 | #include <AliRun.h> //GetTrackPoint(),PropagateBack() |
9 | #include <AliTrackPointArray.h> //GetTrackPoint() | |
10 | #include <AliAlignObj.h> //GetTrackPoint() | |
59d9d4b3 | 11 | #include <AliCDBManager.h> //PropageteBack() |
12 | #include <AliCDBEntry.h> //PropageteBack() | |
423554a3 | 13 | //. |
14 | // HMPID base class fo tracking | |
15 | //. | |
16 | //. | |
17 | //. | |
d3da6dc4 | 18 | ClassImp(AliHMPIDTracker) |
94b1fbfa | 19 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
c61a7285 | 20 | AliHMPIDTracker::AliHMPIDTracker(): |
21 | AliTracker(), | |
22 | fClu(new TObjArray(AliHMPIDParam::kMaxCh+1)) | |
94b1fbfa | 23 | { |
59d9d4b3 | 24 | // ctor. Create TObjArray of TClonesArray of AliHMPIDCluster |
25 | // | |
26 | // | |
c61a7285 | 27 | fClu->SetOwner(kTRUE); |
ae5a42aa | 28 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i); |
59d9d4b3 | 29 | }//ctor |
d3da6dc4 | 30 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
31 | Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const | |
32 | { | |
33 | // Interface callback methode invoked from AliReconstruction::WriteAlignmentData() to get position of MIP cluster in MARS associated to a current track. | |
34 | // MIP cluster is reffered by index which is stored in AliESDtrack ??????? | |
35 | // Arguments: idx- cluster index which is stored by HMPID in AliESDtrack | |
36 | // point- reference to the object where to store the point | |
37 | // Returns: status of operation if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track. | |
38 | if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack() | |
59d9d4b3 | 39 | Int_t iCham=idx/1000000; Int_t iClu=idx%1000000; |
ae079791 | 40 | point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham-1));//layer and chamber number |
94b1fbfa | 41 | TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham]; |
42 | AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster | |
d3da6dc4 | 43 | Double_t mars[3]; |
44 | AliHMPIDParam::Instance()->Lors2Mars(iCham,pClu->X(),pClu->Y(),mars); | |
45 | point.SetXYZ(mars[0],mars[1],mars[2]); | |
46 | return kTRUE; | |
59d9d4b3 | 47 | }//GetTrackPoint() |
48 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
39cd22e6 | 49 | Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi) |
59d9d4b3 | 50 | { |
51 | // Static method to find intersection in between given track and HMPID chambers | |
52 | // Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm] | |
53 | // Returns: intersected chamber ID or -1 | |
54 | AliHMPIDParam *pParam=AliHMPIDParam::Instance(); | |
ae5a42aa | 55 | for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop |
59d9d4b3 | 56 | Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Point(i,p1,AliHMPIDParam::kRad); //point & norm for middle of radiator plane |
57 | Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Point(i,p2,AliHMPIDParam::kPc); //point & norm for entrance to PC plane | |
58 | if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue; //try to intersect track with the middle of radiator | |
59 | if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue; //try to intersect track with PC | |
60 | pParam->Mars2LorsVec(i,n1,theta,phi); //track angles at RAD | |
61 | pParam->Mars2Lors (i,p1,xRa,yRa); //TRKxRAD position | |
62 | pParam->Mars2Lors (i,p2,xPc,yPc); //TRKxPC position | |
39cd22e6 | 63 | if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kTRUE) return i; //return intersected chamber |
59d9d4b3 | 64 | } //chambers loop |
39cd22e6 | 65 | return -1; //no intersection with HMPID chambers |
59d9d4b3 | 66 | }//IntTrkCha() |
d3da6dc4 | 67 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
68 | Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree) | |
69 | { | |
59d9d4b3 | 70 | // Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event. |
d3da6dc4 | 71 | // Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR() |
72 | // Returns: error code (currently ignored in AliReconstruction::RunTraking()) | |
ae5a42aa | 73 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i])); |
94b1fbfa | 74 | pCluTree->GetEntry(0); |
94b1fbfa | 75 | return 0; |
59d9d4b3 | 76 | }//LoadClusters() |
d3da6dc4 | 77 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
af885e0f | 78 | Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd) |
abb5f786 | 79 | { |
59d9d4b3 | 80 | // Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event |
abb5f786 | 81 | // Agruments: pEsd - pointer to ESD |
82 | // Returns: error code | |
f6998a13 | 83 | AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 21 TF1 |
49881df7 | 84 | AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 42 (7ch * 6sec) TF1 |
abb5f786 | 85 | if(!pNmeanEnt) AliFatal("No Nmean C6F14 "); |
86 | if(!pQthreEnt) AliFatal("No Qthre"); | |
94b1fbfa | 87 | |
afe12692 | 88 | return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject(),(TObjArray*)pQthreEnt->GetObject()); |
611e810d | 89 | }//PropagateBack() |
abb5f786 | 90 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
afe12692 | 91 | Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre) |
d3da6dc4 | 92 | { |
59d9d4b3 | 93 | // Static method to reconstruct Theta Ckov for all valid tracks of a given event. |
94 | // Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time) | |
d3da6dc4 | 95 | // Returns: error code, 0 if no errors |
abb5f786 | 96 | AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor |
39cd22e6 | 97 | Float_t xPc,yPc,xRa,yRa,theta,phi; |
59d9d4b3 | 98 | for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //ESD tracks loop |
99 | AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track | |
39cd22e6 | 100 | Int_t cham=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); //get chamber intersected by this track |
101 | if(cham<0) { //no intersection at all, go after next track | |
102 | pTrk->SetHMPIDtrk(0,0,0,0); //no intersection found | |
103 | pTrk->SetHMPIDcluIdx (99,99999); //chamber not found, mip not yet considered | |
104 | pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed | |
105 | continue; | |
106 | } | |
107 | pTrk->SetHMPIDtrk(xRa,yRa,theta,phi); //store initial infos | |
a591e55f | 108 | Double_t nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber |
6b7f1827 | 109 | Double_t qthre = 0; |
110 | if(pQthre->GetEntriesFast()==AliHMPIDParam::kMaxCh+1) // just for backward compatibility | |
111 | qthre=((TF1*)pQthre->At(cham))->Eval(pEsd->GetTimeStamp()); // | |
112 | else { // in the past just 1 qthre | |
7656d8ac | 113 | Int_t hvsec = AliHMPIDParam::InHVSector(yPc); // per chamber |
44193e0f | 114 | if (hvsec>=0) |
115 | qthre=((TF1*)pQthre->At(6*cham+hvsec))->Eval(pEsd->GetTimeStamp()); // | |
6b7f1827 | 116 | } // |
a591e55f | 117 | recon.SetImpPC(xPc,yPc); //store track impact to PC |
afe12692 | 118 | recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),nmean,qthre); //search for Cerenkov angle of this track |
8d6043fc | 119 | // Printf("AliHMPIDTracker::Recon: nmean %f, qthre %f",nmean,qthre); |
59280a5a | 120 | } //ESD tracks loop |
d3da6dc4 | 121 | return 0; // error code: 0=no error; |
611e810d | 122 | }//Recon() |
123 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
49881df7 | 124 | Int_t AliHMPIDTracker::ReconHiddenTrk(Int_t iCh,Int_t iHVsec,AliESDtrack *pTrk,TClonesArray *pCluLst,TObjArray *pNmean,TObjArray *pQthre) |
611e810d | 125 | { |
126 | // Static method to reconstruct Theta Ckov for all valid tracks of a given event. | |
afe12692 | 127 | // Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time), pQthre - pointer to all function Qthre=f(time) |
611e810d | 128 | // Returns: error code, 0 if no errors |
57fcdc2b | 129 | AliHMPIDReconHTA reconHTA; //instance of reconstruction class, nothing important in ctor |
611e810d | 130 | Double_t nmean=((TF1*)pNmean->At(3*iCh))->Eval(0); //C6F14 Nmean for this chamber |
6b7f1827 | 131 | Double_t qthre = 0; |
fd47aebf | 132 | if(pQthre->GetEntriesFast()==AliHMPIDParam::kMaxCh+1) // |
133 | qthre=((TF1*)pQthre->At(iCh))->Eval(0); //just for backward compatibi | |
134 | else qthre=((TF1*)pQthre->At(6*iCh+iHVsec))->Eval(0); // | |
611e810d | 135 | if(pCluLst->GetEntriesFast()<4) return 1; //min 4 clusters (3 + 1 mip) to find a ring! |
57fcdc2b | 136 | if(reconHTA.CkovHiddenTrk(pTrk,pCluLst,nmean,qthre)) return 0; //search for track parameters and Cerenkov angle of this track |
5b2b2013 | 137 | else return 1; // error code: 0=no error,1=fit not performed; |
611e810d | 138 | }//Recon() |
d3da6dc4 | 139 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
c1af14f7 | 140 | void AliHMPIDTracker::FillClusterArray(TObjArray* array) const { |
141 | ||
142 | // Publishes all pointers to clusters known to the tracker into the | |
143 | // passed object array. | |
144 | // The ownership is not transfered - the caller is not expected to delete | |
145 | // the clusters | |
146 | ||
147 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ | |
148 | TClonesArray *pCluArr=(TClonesArray*)(*fClu)[iCh]; | |
149 | for (Int_t iClu=0; iClu<pCluArr->GetEntriesFast();iClu++){ | |
150 | AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluArr->UncheckedAt(iClu); | |
151 | array->AddLast(pClu); | |
152 | }//cluster loop in iCh | |
153 | pCluArr->Delete(); | |
154 | }//Ch loop | |
155 | ||
156 | return; | |
157 | } | |
158 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |