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1 | #include "AliHMPIDTracker.h" //class header | |
2 | #include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack() | |
3 | #include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack() | |
4 | #include "AliHMPIDRecon.h" //Recon() | |
5 | #include "AliHMPIDReconHTA.h" //ReconHTA() | |
6 | #include <AliESDEvent.h> //PropagateBack(),Recon() | |
7 | #include <AliESDtrack.h> //Intersect() | |
8 | #include <AliRun.h> //GetTrackPoint(),PropagateBack() | |
9 | #include <AliTrackPointArray.h> //GetTrackPoint() | |
10 | #include <AliAlignObj.h> //GetTrackPoint() | |
11 | #include <AliCDBManager.h> //PropageteBack() | |
12 | #include <AliCDBEntry.h> //PropageteBack() | |
13 | //. | |
14 | // HMPID base class fo tracking | |
15 | //. | |
16 | //. | |
17 | //. | |
18 | ClassImp(AliHMPIDTracker) | |
19 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
20 | AliHMPIDTracker::AliHMPIDTracker(): | |
21 | AliTracker(), | |
22 | fClu(new TObjArray(AliHMPIDParam::kMaxCh+1)) | |
23 | { | |
24 | // ctor. Create TObjArray of TClonesArray of AliHMPIDCluster | |
25 | // | |
26 | // | |
27 | fClu->SetOwner(kTRUE); | |
28 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i); | |
29 | }//ctor | |
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() | |
39 | Int_t iCham=idx/1000000; Int_t iClu=idx%1000000; | |
40 | point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham-1));//layer and chamber number | |
41 | TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham]; | |
42 | AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster | |
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; | |
47 | }//GetTrackPoint() | |
48 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
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) | |
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(); | |
55 | for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop | |
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 | |
63 | if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kTRUE) return i; //return intersected chamber | |
64 | } //chambers loop | |
65 | return -1; //no intersection with HMPID chambers | |
66 | }//IntTrkCha() | |
67 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
68 | Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree) | |
69 | { | |
70 | // Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event. | |
71 | // Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR() | |
72 | // Returns: error code (currently ignored in AliReconstruction::RunTraking()) | |
73 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i])); | |
74 | pCluTree->GetEntry(0); | |
75 | return 0; | |
76 | }//LoadClusters() | |
77 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
78 | Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd) | |
79 | { | |
80 | // Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event | |
81 | // Agruments: pEsd - pointer to ESD | |
82 | // Returns: error code | |
83 | AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 21 TF1 | |
84 | AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 42 (7ch * 6sec) TF1 | |
85 | if(!pNmeanEnt) AliFatal("No Nmean C6F14 "); | |
86 | if(!pQthreEnt) AliFatal("No Qthre"); | |
87 | ||
88 | return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject(),(TObjArray*)pQthreEnt->GetObject()); | |
89 | }//PropagateBack() | |
90 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
91 | Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre) | |
92 | { | |
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) | |
95 | // Returns: error code, 0 if no errors | |
96 | AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor | |
97 | Float_t xPc,yPc,xRa,yRa,theta,phi; | |
98 | for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //ESD tracks loop | |
99 | AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track | |
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 | |
108 | Double_t nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber | |
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 | |
113 | Int_t hvsec = AliHMPIDParam::InHVSector(yPc); // per chamber | |
114 | if (hvsec>=0) | |
115 | qthre=((TF1*)pQthre->At(6*cham+hvsec))->Eval(pEsd->GetTimeStamp()); // | |
116 | } // | |
117 | recon.SetImpPC(xPc,yPc); //store track impact to PC | |
118 | recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),nmean,qthre); //search for Cerenkov angle of this track | |
119 | // Printf("AliHMPIDTracker::Recon: nmean %f, qthre %f",nmean,qthre); | |
120 | } //ESD tracks loop | |
121 | return 0; // error code: 0=no error; | |
122 | }//Recon() | |
123 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
124 | Int_t AliHMPIDTracker::ReconHiddenTrk(Int_t iCh,Int_t iHVsec,AliESDtrack *pTrk,TClonesArray *pCluLst,TObjArray *pNmean,TObjArray *pQthre) | |
125 | { | |
126 | // Static method to reconstruct Theta Ckov for all valid tracks of a given event. | |
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) | |
128 | // Returns: error code, 0 if no errors | |
129 | AliHMPIDReconHTA reconHTA; //instance of reconstruction class, nothing important in ctor | |
130 | Double_t nmean=((TF1*)pNmean->At(3*iCh))->Eval(0); //C6F14 Nmean for this chamber | |
131 | Double_t qthre = 0; | |
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); // | |
135 | if(pCluLst->GetEntriesFast()<4) return 1; //min 4 clusters (3 + 1 mip) to find a ring! | |
136 | if(reconHTA.CkovHiddenTrk(pTrk,pCluLst,nmean,qthre)) return 0; //search for track parameters and Cerenkov angle of this track | |
137 | else return 1; // error code: 0=no error,1=fit not performed; | |
138 | }//Recon() | |
139 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
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 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |