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protection against wrong esd track labels
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDTracker.cxx
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3c6274c1 1#include "AliHMPIDTracker.h" //class header
e56b695f 2#include "AliHMPIDtrack.h" //class header
3c6274c1 3#include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack()
4#include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack()
e56b695f 5#include "AliHMPIDPid.h" //Recon(),reconHTA()
59d9d4b3 6#include "AliHMPIDRecon.h" //Recon()
c458aab6 7#include "AliHMPIDRecoParamV1.h" //Recon()
b8541917 8#include "AliHMPIDReconstructor.h"//Recon()
57fcdc2b 9#include "AliHMPIDReconHTA.h" //ReconHTA()
3e630437 10#include <AliLog.h> //Recon()
57fcdc2b 11#include <AliESDEvent.h> //PropagateBack(),Recon()
c38d443f 12#include <AliESDtrack.h> //Intersect()
13#include <AliTracker.h>
d3da6dc4 14#include <AliRun.h> //GetTrackPoint(),PropagateBack()
15#include <AliTrackPointArray.h> //GetTrackPoint()
16#include <AliAlignObj.h> //GetTrackPoint()
59d9d4b3 17#include <AliCDBManager.h> //PropageteBack()
18#include <AliCDBEntry.h> //PropageteBack()
79439569 19#include "TTreeStream.h" // debug streamer
20//
423554a3 21// HMPID base class fo tracking
22//.
23//.
24//.
d3da6dc4 25ClassImp(AliHMPIDTracker)
94b1fbfa 26//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
c61a7285 27AliHMPIDTracker::AliHMPIDTracker():
28 AliTracker(),
79439569 29 fClu(new TObjArray(AliHMPIDParam::kMaxCh+1)),
30 fDebugStreamer(0)
94b1fbfa 31{
59d9d4b3 32// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster
33//
34//
c61a7285 35 fClu->SetOwner(kTRUE);
ae5a42aa 36 for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
79439569 37 fDebugStreamer = new TTreeSRedirector("HMPIDdebug.root");
38
59d9d4b3 39}//ctor
79439569 40
41
42AliHMPIDTracker::~AliHMPIDTracker(){
43 //
44 // destructor
45 //
46 delete fClu;
47 if (fDebugStreamer) delete fDebugStreamer;
48}
49
d3da6dc4 50//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
51Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
52{
53// Interface callback methode invoked from AliReconstruction::WriteAlignmentData() to get position of MIP cluster in MARS associated to a current track.
54// MIP cluster is reffered by index which is stored in AliESDtrack ???????
55// Arguments: idx- cluster index which is stored by HMPID in AliESDtrack
56// point- reference to the object where to store the point
57// Returns: status of operation if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track.
58 if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack()
59d9d4b3 59 Int_t iCham=idx/1000000; Int_t iClu=idx%1000000;
2247c219 60 iClu = iClu%1000; //GetHMPIDcluIdx -> 1e+6*ch + 1e+3*clusize + cluIdx;
61 point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham));//layer and chamber number
94b1fbfa 62 TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham];
63 AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster
2247c219 64 Float_t xyz[3];
65 pClu->GetGlobalXYZ(xyz);
66 Float_t cov[6];
67 pClu->GetGlobalCov(cov);
68 point.SetXYZ(xyz,cov);
d3da6dc4 69 return kTRUE;
59d9d4b3 70}//GetTrackPoint()
71//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
39cd22e6 72Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
59d9d4b3 73{
74// Static method to find intersection in between given track and HMPID chambers
75// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm]
76// Returns: intersected chamber ID or -1
b4866751 77 AliHMPIDtrack *hmpTrk = new AliHMPIDtrack(*pTrk); //create a hmpid track to be used for propagation and matching
ae5a42aa 78 for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop
b4866751 79 Int_t chInt = IntTrkCha(i,hmpTrk,xPc,yPc,xRa,yRa,theta,phi);
80 if(chInt>=0) {delete hmpTrk;hmpTrk=0x0;return chInt;}
59d9d4b3 81 } //chambers loop
b4866751 82 delete hmpTrk; hmpTrk=0x0;
39cd22e6 83 return -1; //no intersection with HMPID chambers
59d9d4b3 84}//IntTrkCha()
d3da6dc4 85//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
496c71b0 86Int_t AliHMPIDTracker::IntTrkCha(Int_t ch,AliHMPIDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
87{
88// Static method to find intersection in between given track and HMPID chambers
89// Arguments: pTrk- HMPID track; xPc,yPc- track intersection with PC in LORS [cm]
90// Returns: intersected chamber ID or -1
91 AliHMPIDParam *pParam=AliHMPIDParam::Instance();
92 Double_t p1[3],n1[3];
93 pParam->Norm(ch,n1);
94 pParam->Point(ch,p1,AliHMPIDParam::kRad); //point & norm for middle of radiator plane
95 Double_t p2[3],n2[3];
b4866751 96 pParam->Norm(ch,n2);
496c71b0 97 pParam->Point(ch,p2,AliHMPIDParam::kPc); //point & norm for entrance to PC plane
97a4d538 98 if(pTrk->Intersect(p1,n1)==kFALSE) return -1; //try to intersect track with the middle of radiator
99 if(pTrk->Intersect(p2,n2)==kFALSE) return -1;
496c71b0 100 pParam->Mars2LorsVec(ch,n1,theta,phi); //track angles at RAD
101 pParam->Mars2Lors (ch,p1,xRa,yRa); //TRKxRAD position
102 pParam->Mars2Lors (ch,p2,xPc,yPc); //TRKxPC position
103 if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kTRUE) return ch; //return intersected chamber
104 return -1; //no intersection with HMPID chambers
105}//IntTrkCha()
106//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
d3da6dc4 107Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree)
108{
59d9d4b3 109// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event.
d3da6dc4 110// Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR()
111// Returns: error code (currently ignored in AliReconstruction::RunTraking())
ae5a42aa 112 for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
94b1fbfa 113 pCluTree->GetEntry(0);
94b1fbfa 114 return 0;
59d9d4b3 115}//LoadClusters()
d3da6dc4 116//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
af885e0f 117Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd)
abb5f786 118{
59d9d4b3 119// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event
abb5f786 120// Agruments: pEsd - pointer to ESD
121// Returns: error code
f455af6e 122 AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 42 TF1 + 1 EPhotMean
49881df7 123 AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 42 (7ch * 6sec) TF1
0a7c7084 124 if(!pNmeanEnt) AliError("No Nmean C6F14 ");
125 if(!pQthreEnt) AliError("No Qthre");
94b1fbfa 126
afe12692 127 return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject(),(TObjArray*)pQthreEnt->GetObject());
611e810d 128}//PropagateBack()
abb5f786 129//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
afe12692 130Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre)
d3da6dc4 131{
59d9d4b3 132// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
133// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
d3da6dc4 134// Returns: error code, 0 if no errors
79439569 135 const Double_t kMaxSnp=0.9; //maximal snp for prolongation
496c71b0 136 AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor
b8541917 137 AliHMPIDParam *pParam = AliHMPIDParam::Instance(); //Instance of AliHMPIDParam
39cd22e6 138 Float_t xPc,yPc,xRa,yRa,theta,phi;
43e51ec6 139 Double_t cluLORS[2]={0};
140// Double_t cluMARS[3]={0},trkMARS[3]={0};
496c71b0 141// Double_t bestcluMARS[3]={0,0,0};
43e51ec6 142// Double_t radClu,radInitTrk;
496c71b0 143 Int_t nMipClusTot=0;
43e51ec6 144// Double_t d3d=0;
84770d7b 145 Double_t qthre = 0; Double_t nmean=0; Int_t hvsec=0;
496c71b0 146 Int_t nClusCh[AliHMPIDParam::kMaxCh+1];
3e630437 147
15f675cb 148 Bool_t tsRight = kTRUE;
149
3e630437 150 UInt_t tsmin = (UInt_t)((TF1*)pQthre->At(0))->GetXmin(); //
151 UInt_t tsmax = (UInt_t)((TF1*)pQthre->At(0))->GetXmax(); //
152 UInt_t ts = pEsd->GetTimeStamp();
496c71b0 153
3e630437 154 if(ts<tsmin || ts>tsmax) {
155 AliWarning(Form(" in HMPID time stamp out of range!!! Please check!!! ts = %i",ts));
15f675cb 156 tsRight = kFALSE;
3e630437 157 }
158
496c71b0 159 for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //loop on the ESD tracks in the event
c38d443f 160
43e51ec6 161// Double_t bestChi2=99999;chi2=99999; //init. track matching params
b8541917 162 Double_t dmin=999999,bz=0,distCut=1,distParams[5]={1};
43e51ec6 163
164 Bool_t isOkDcut=kFALSE;
165 Bool_t isOkQcut=kFALSE;
166 Bool_t isMatched=kFALSE;
167
496c71b0 168 AliHMPIDCluster *bestHmpCluster=0x0; //the best matching cluster
c38d443f 169 AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track
170
171 if(!pTrk->IsOn(AliESDtrack::kTPCout)) continue;
172
173 if(pTrk->IsOn(AliESDtrack::kTPCrefit)) continue;
79439569 174 AliESDfriendTrack *ftrack= (AliESDfriendTrack *)pTrk->GetFriendTrack();
175 if (!ftrack) continue;
176 if (!ftrack->GetTPCOut()) continue;
496c71b0 177 AliHMPIDtrack *hmpTrk = new AliHMPIDtrack(*pTrk); //create a hmpid track to be used for propagation and matching
79439569 178 hmpTrk->Set(ftrack->GetTPCOut()->GetX(), ftrack->GetTPCOut()->GetAlpha(),ftrack->GetTPCOut()->GetParameter(), ftrack->GetTPCOut()->GetCovariance());
179 //
496c71b0 180 bz=AliTracker::GetBz();
43e51ec6 181//initial flags for HMPID ESD infos
182 pTrk->SetHMPIDtrk(0,0,0,0); //no intersection found
183 pTrk->SetHMPIDmip(0,0,0,0); //store mip info in any case
184 pTrk->SetHMPIDcluIdx(99,99999); //chamber not found, mip not yet considered
185 pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed
496c71b0 186
af291e40 187 Int_t ipCh=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); //find the intersected chamber for this track
4ccd1903 188 if(ipCh<0) {delete hmpTrk;hmpTrk=0x0;continue;} //no intersection at all, go after next track
43e51ec6 189
97a4d538 190 pTrk->SetHMPIDtrk(xPc,yPc,theta,phi); //store initial infos
43e51ec6 191 pTrk->SetHMPIDcluIdx(ipCh,9999); //set chamber, index of cluster + cluster size
496c71b0 192
193// track intersects the chamber ipCh: find the MIP
194
195 TClonesArray *pMipCluLst=(TClonesArray *)pClus->At(ipCh); //get the list of clusters
196 nMipClusTot = pMipCluLst->GetEntries(); //total number of clusters in the given chamber
197 nClusCh[ipCh] = nMipClusTot;
198
4ccd1903 199 if(nMipClusTot==0) {delete hmpTrk;hmpTrk=0x0;continue;}
43e51ec6 200
201 Int_t index=-1; //index of the "best" matching cluster
202
496c71b0 203 for (Int_t iClu=0; iClu<nMipClusTot;iClu++) { //clusters loop
204
205 AliHMPIDCluster *pClu=(AliHMPIDCluster*)pMipCluLst->UncheckedAt(iClu); //get the cluster
206// evaluate qThre
15f675cb 207 if(tsRight){
208 if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) {
209 qthre=((TF1*)pQthre->At(pClu->Ch()))->Eval(ts); //
210 } else { // in the past just 1 qthre
211 hvsec = pParam->InHVSector(pClu->Y()); // per chamber
212 if(hvsec>=0) qthre=((TF1*)pQthre->At(6*ipCh+hvsec))->Eval(ts); //
213 }
214 } else qthre = pParam->QCut();
215
216//
496c71b0 217 if(pClu->Q()<qthre) continue; //charge compartible with MIP clusters
218 isOkQcut = kTRUE;
43e51ec6 219//
496c71b0 220 cluLORS[0]=pClu->X(); cluLORS[1]=pClu->Y(); //get the LORS coordinates of the cluster
43e51ec6 221 Double_t dist = TMath::Sqrt((xPc-cluLORS[0])*(xPc-cluLORS[0])+(yPc-cluLORS[1])*(yPc-cluLORS[1]));
222
223 if(dist<dmin) {
224 dmin = dist;
225 index=iClu;
226 bestHmpCluster=pClu;
227 }
4ccd1903 228 } // clusters loop
b8541917 229
496c71b0 230 if(!isOkQcut) {
496c71b0 231 pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
4ccd1903 232 delete hmpTrk;hmpTrk=0x0; continue;
496c71b0 233 }
79439569 234 // Double_t radius = (pParam->Lors2Mars(ipCh,pParam->SizeAllX()/2,pParam->SizeAllY()/2)).Mag();
235 //
236 TVector3 vG = pParam->Lors2Mars(ipCh,bestHmpCluster->X(),bestHmpCluster->Y());
237 Double_t gx = vG[0];
238 Double_t gy = vG[1];
239 Double_t gz = vG[2];
240 Double_t alpha=TMath::ATan2(gy,gx);
241 Double_t radiusH=TMath::Sqrt(gy*gy+gx*gx);
242 //
243 //
244 if (!(hmpTrk->Rotate(alpha,kTRUE))) continue;
245 if(!AliTrackerBase::PropagateTrackToBxByBz(hmpTrk,radiusH,pTrk->GetMass(),1,kFALSE,kMaxSnp,-1)) {delete hmpTrk;hmpTrk=0x0;continue;}
246 //
247 // Dump debug info if specified
248 //
249 // if (AliHMPIDReconstructor::StreamLevel()>0){
250 if (1) {//use the AliHMPIDreconstructor switch to activate it
251 AliExternalTrackParam * trackTPC=new AliExternalTrackParam(*(ftrack->GetTPCOut()));
252 AliExternalTrackParam * trackCurrent=new AliExternalTrackParam(*pTrk);
253 trackTPC->Rotate(alpha);
254 trackCurrent->Rotate(alpha);
255 Bool_t statusTPC= AliTracker::PropagateTrackToBxByBz(trackTPC,radiusH,pTrk->GetMass(),1,kFALSE,kMaxSnp,-1);
256 Bool_t statusCurrent=AliTracker::PropagateTrackToBxByBz(trackCurrent,radiusH,pTrk->GetMass(),1,kFALSE,kMaxSnp,-1);
257 Double_t tanAlpha=TMath::ATan(TMath::ASin(trackTPC->GetSnp()));
258 Double_t deltaC= trackTPC->GetC(AliTrackerBase::GetBz())-ftrack->GetTPCOut()->GetC(AliTrackerBase::GetBz());
259 //
260 (*fDebugStreamer)<<"track"<<
261 "rH="<<radiusH<< // radius of cluster
262 "tanAlpha="<<tanAlpha<< // tan of the local inlination angle
263 "dC="<<deltaC<< // delta of the curvature
264 "trackTPC.="<<trackTPC<< // TPc outer param extrapolated to the HMPID
265 "trackCurrent.="<<trackCurrent<< // current track extrapolated to the HMPID
266 "sTPC="<<statusTPC<< // status for the current TPC track
267 "sCurrent="<<statusCurrent<< // status for the current global track
268 "cl.="<<bestHmpCluster<< // HMPID cluster
269 //
270 "t.="<<pTrk<< // curent esd track
271 "ft.="<<ftrack<< // friend track
272 "hmpTrk.="<<hmpTrk<< // hmpid tracks as used in the following code
273 "gx="<<gx<< // global cluster position X
274 "gy="<<gy<< // Y
275 "gz="<<gz<< // Z
276 "\n";
277 }
278
279 //if(!hmpTrk->PropagateTo(bestHmpCluster)) {delete hmpTrk;hmpTrk=0x0;continue;}
c38d443f 280
43e51ec6 281 Int_t cluSiz = bestHmpCluster->Size();
282 pTrk->SetHMPIDmip(bestHmpCluster->X(),bestHmpCluster->Y(),(Int_t)bestHmpCluster->Q(),0); //store mip info in any case
283 pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz); //set chamber, index of cluster + cluster size
79439569 284
285 Double_t HmpXYZ[3]; hmpTrk->GetXYZ(HmpXYZ);
286 Double_t HmpPxPyPz[3]; hmpTrk->GetPxPyPz(HmpPxPyPz);
287
288 pParam->Mars2Lors(ipCh,HmpXYZ,xPc,yPc); pParam->Mars2Lors(ipCh,HmpPxPyPz,theta,phi);
289
290 pTrk->SetHMPIDtrk(xPc,yPc,theta,phi);
291
292
b8541917 293 if(AliHMPIDReconstructor::GetRecoParam()) //retrieve distance cut
294 {
b8541917 295 if(AliHMPIDReconstructor::GetRecoParam()->IsFixedDistCut()==kTRUE) //distance cut is fixed number
296 {
297 distCut=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDist();
298 }
299 else
300 {
13fb7604 301 for(Int_t ipar=0;ipar<5;ipar++) distParams[ipar]=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDistParam(ipar); //prevision: distance cut is function of momentum
b8541917 302 distCut=distParams[0]+distParams[1]*TMath::Power(distParams[2]*pTrk->GetP(),distParams[3]); //prevision: change functional form to be more precise
303 }
304 }
305 else {distCut=pParam->DistCut();}
306
307 if(dmin < distCut) {
496c71b0 308 isOkDcut = kTRUE;
4ccd1903 309 }
b8541917 310
496c71b0 311 if(!isOkDcut) {
496c71b0 312 pTrk->SetHMPIDsignal(pParam->kMipDistCut); //closest cluster with enough charge is still too far from intersection
313 }
314
315 if(isOkQcut*isOkDcut) isMatched = kTRUE; // MIP-Track matched !!
316
4ccd1903 317 if(!isMatched) {delete hmpTrk;hmpTrk=0x0;continue;} // If matched continue...
43e51ec6 318
319 Bool_t isOk = hmpTrk->Update(bestHmpCluster,0.1,0);
4ccd1903 320 if(!isOk) {delete hmpTrk;hmpTrk=0x0;continue;}
c38d443f 321 pTrk->SetOuterHmpParam(hmpTrk,AliESDtrack::kHMPIDout);
322
323 FillResiduals(hmpTrk,bestHmpCluster,kFALSE);
b8541917 324
ddb21a01 325 Int_t iRad = pParam->Radiator(yRa); //evaluate the radiator involved
496c71b0 326
496c71b0 327 //evaluate nMean
15f675cb 328 if(tsRight){
329 if(pNmean->GetEntries()==21) { //for backward compatibility
330 nmean=((TF1*)pNmean->At(3*ipCh))->Eval(ts); //C6F14 Nmean for this chamber
331 } else {
15f675cb 332 if(iRad < 0) {
0a7c7084 333 nmean = -1;
15f675cb 334 } else {
335 Double_t tLow = ((TF1*)pNmean->At(6*ipCh+2*iRad ))->Eval(ts); //C6F14 low temp for this chamber
336 Double_t tHigh = ((TF1*)pNmean->At(6*ipCh+2*iRad+1))->Eval(ts); //C6F14 high temp for this chamber
337 Double_t tExp = pParam->FindTemp(tLow,tHigh,yRa); //estimated temp for that chamber at that y
338 nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp); //mean ref idx @ a given temp
339 }
340 if(nmean < 0){ //track didn' t pass through the radiator
496c71b0 341 pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad); //set the appropriate flag
342 pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz); //set index of cluster
4ccd1903 343 delete hmpTrk;hmpTrk=0x0;
496c71b0 344 continue;
15f675cb 345 }
496c71b0 346 }
15f675cb 347 } else nmean = pParam->MeanIdxRad();
348
496c71b0 349 //
a591e55f 350 recon.SetImpPC(xPc,yPc); //store track impact to PC
97a4d538 351 recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(ipCh),index,nmean,xRa,yRa); //search for Cerenkov angle of this track
235a21c2 352
4ccd1903 353 if(pTrk->GetHMPIDsignal()<0) {delete hmpTrk;hmpTrk=0x0;continue;}
235a21c2 354
e56b695f 355 AliHMPIDPid pID;
356 Double_t prob[5];
357 pID.FindPid(pTrk,5,prob);
358 pTrk->SetHMPIDpid(prob);
359// Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]*100,prob[1]*100,prob[2]*100,prob[3]*100,prob[4]*100);
b4866751 360 delete hmpTrk;hmpTrk=0x0;
496c71b0 361 }//iTrk
362
d3da6dc4 363 return 0; // error code: 0=no error;
611e810d 364}//Recon()
365//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
9785d5fb 366Int_t AliHMPIDTracker::ReconHiddenTrk(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre)
611e810d 367{
368// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
afe12692 369// 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 370// Returns: error code, 0 if no errors
9785d5fb 371
372 AliHMPIDReconHTA reconHTA; //instance of reconstruction class, nothing important in ctor
373
374 AliHMPIDParam *pParam = AliHMPIDParam::Instance(); //Instance of AliHMPIDParam
15f675cb 375
376 Bool_t tsRight = kTRUE;
377
3e630437 378 UInt_t tsmin = (UInt_t)((TF1*)pQthre->At(0))->GetXmin(); //
379 UInt_t tsmax = (UInt_t)((TF1*)pQthre->At(0))->GetXmax(); //
380 UInt_t ts = pEsd->GetTimeStamp();
381
382 if(ts<tsmin || ts>tsmax) {
383 AliWarning(Form(" in HMPID time stamp out of range!!! Please check!!! ts = %i",ts));
15f675cb 384 tsRight = kFALSE;
3e630437 385 }
386
9785d5fb 387 for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //loop on the ESD tracks in the event
388
389 AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //here it is simulated or just empty track
390 Int_t ipCh;
391 ipCh = pTrk->GetHMPIDcluIdx();ipCh/=1000000;
392 if(ipCh<0) continue;
393
394 TClonesArray *pMipCluLst=(TClonesArray *)pClus->At(ipCh); //get the list of clusters
395 Int_t nMipClusTot = pMipCluLst->GetEntries(); //total number of clusters in the given chamber
396
397 Double_t qMip=-1;
398 Int_t chMip=-1;
ee2f3539 399 Double_t xMip = 0;
400 Double_t yMip = 0;
401 Int_t indMip = 0;
402 Int_t cluMipSiz = 0;
9785d5fb 403
404 for (Int_t iClu=0; iClu<nMipClusTot;iClu++) { //clusters loop
405
406 AliHMPIDCluster *pClu=(AliHMPIDCluster*)pMipCluLst->UncheckedAt(iClu); //get the cluster
407 Double_t qClus = pClu->Q();
408 if(qClus>qMip) {
409 qMip = qClus;
410 chMip = pClu->Ch();
411 xMip = pClu->X();
412 yMip = pClu->Y();
413 indMip = iClu;
414 cluMipSiz = pClu->Size();
415 }
416 }//clus loop
417
418 if(chMip<0) return 1;
419
420 Int_t hvsec;
ee2f3539 421 Double_t qthre=0;
15f675cb 422
9785d5fb 423// evaluate qThre
15f675cb 424 if(tsRight){
9785d5fb 425 if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) { // just for backward compatibility
3e630437 426 qthre=((TF1*)pQthre->At(chMip))->Eval(ts); //
9785d5fb 427 } else { // in the past just 1 qthre
428 hvsec = pParam->InHVSector(yMip); // per chamber
3e630437 429 if(hvsec>=0) qthre=((TF1*)pQthre->At(6*chMip+hvsec))->Eval(ts); //
15f675cb 430 }
431 } else qthre = pParam->QCut();
9785d5fb 432//
433 if(qMip<qthre) {
3e630437 434 pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0); //store mip info in any case
9785d5fb 435 pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);
436 pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
437 return 1; //charge compatible with MIP clusters
438 }
439
440 pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0); //store mip info in any case
441 pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);
442
443 Double_t yRa = yMip; //just an approx...
444 Double_t nmean;
ddb21a01 445
446 Int_t iRad = pParam->Radiator(yRa); //evaluate the radiator involved
447
9785d5fb 448 //evaluate nMean
15f675cb 449 if(tsRight){
9785d5fb 450 if(pNmean->GetEntries()==21) { //for backward compatibility
3e630437 451 nmean=((TF1*)pNmean->At(3*chMip))->Eval(ts); //C6F14 Nmean for this chamber
9785d5fb 452 } else {
9785d5fb 453 if(iRad < 0) {
454 nmean = -1;
455 } else {
3e630437 456 Double_t tLow = ((TF1*)pNmean->At(6*chMip+2*iRad ))->Eval(ts); //C6F14 low temp for this chamber
457 Double_t tHigh = ((TF1*)pNmean->At(6*chMip+2*iRad+1))->Eval(ts); //C6F14 high temp for this chamber
9785d5fb 458 Double_t tExp = pParam->FindTemp(tLow,tHigh,yRa); //estimated temp for that chamber at that y
459 nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp); //mean ref idx @ a given temp
460 }
461 if(nmean < 0){ //track didn' t pass through the radiator
462 pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad); //set the appropriate flag
463 return 1;
15f675cb 464 }
465 }
466 } else nmean = pParam->MeanIdxRad();
9785d5fb 467 //
ee2f3539 468 if(!reconHTA.CkovHiddenTrk(pTrk,(TClonesArray *)pClus->At(ipCh),indMip,nmean)) { //search for track parameters and Cerenkov angle of this track
469 AliHMPIDPid pID;
470 Double_t prob[5];
471 pID.FindPid(pTrk,5,prob);
472 pTrk->SetHMPIDpid(prob);
473 }
e56b695f 474// Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]*100,prob[1]*100,prob[2]*100,prob[3]*100,prob[4]*100);
9785d5fb 475 }//iTrk
476
477 return 0; // error code: 0=no error;
478
611e810d 479}//Recon()
d3da6dc4 480//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
c1af14f7 481void AliHMPIDTracker::FillClusterArray(TObjArray* array) const {
482
483 // Publishes all pointers to clusters known to the tracker into the
484 // passed object array.
485 // The ownership is not transfered - the caller is not expected to delete
486 // the clusters
487
488 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){
489 TClonesArray *pCluArr=(TClonesArray*)(*fClu)[iCh];
490 for (Int_t iClu=0; iClu<pCluArr->GetEntriesFast();iClu++){
491 AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluArr->UncheckedAt(iClu);
492 array->AddLast(pClu);
493 }//cluster loop in iCh
494 pCluArr->Delete();
495 }//Ch loop
496
497 return;
498}
499//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++