1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //Authors: Mihaela Gheata, Andrei Gheata 09/10/00
19 ////////////////////////////////////////////////////////////////////
21 // AliMUONRecoEvent, AliMUONRecoTrack (and AliMUONRecoDisplay) //
23 // Theses classes are used to store and retrieve //
24 // MUON reconstructed events. //
25 // The corresponding tree is constructed and filled //
26 // during the FillEvent() method of AliMUONEventReconstructor, //
27 // when all reconstruction information is available. //
29 ////////////////////////////////////////////////////////////////////
30 ////////////////////////////////////////////////////////////////////
32 // AliMUONRecoEvent //
34 // This class handles an array of reconstructed tracks. //
36 // - filling the tracks array according to the information //
37 // stored in AliMUONEventReconstructor class ; //
38 // - printing event and track informations : event numer, //
39 // number of tracks, hits positions, reconstr. mometum. //
41 ////////////////////////////////////////////////////////////////////
43 #include <Riostream.h>
44 #include <TClonesArray.h>
47 #include "AliMUONRecoEvent.h"
48 #include "AliMUONRecoTrack.h"
49 #include "AliMUONEventReconstructor.h"
50 #include "AliMUONTrack.h"
51 #include "AliMUONTrackK.h"
52 #include "AliMUONTrackParam.h"
53 #include "AliMUONHitForRec.h"
54 #include "AliMUONTrackHit.h"
56 #include "AliHeader.h"
58 ClassImp(AliMUONRecoEvent)
60 //-------------------------------------------------------------------
61 AliMUONRecoEvent::AliMUONRecoEvent(Int_t eventNo)
64 // Reconstructed event constructor
65 fTracks = new TClonesArray("AliMUONRecoTrack",200);
70 //-------------------------------------------------------------------
71 AliMUONRecoEvent::AliMUONRecoEvent(const AliMUONRecoEvent& rhs)
74 // Protected copy constructor
76 Fatal("AliMUONRecoEventModule", "Not implemented.");
79 //-------------------------------------------------------------------
80 AliMUONRecoEvent::~AliMUONRecoEvent()
82 // Destructor of AliMUONRecoEvent
88 //-------------------------------------------------------------------
90 AliMUONRecoEvent::operator=(const AliMUONRecoEvent& rhs)
92 // Protected assignement operator
94 if (this == &rhs) return *this;
96 Fatal("operator=", "Not implemented.");
101 //-------------------------------------------------------------------
102 AliMUONRecoTrack* AliMUONRecoEvent::AddEmptyTrack()
104 // Add a empty AliMUONRecoTrackObject to the track list
105 TClonesArray &dumptracks = *fTracks;
106 return (new(dumptracks[fNtracks++])AliMUONRecoTrack(kTRUE));
109 //-------------------------------------------------------------------
110 void AliMUONRecoEvent::Clear(Option_t * /*option*/)
112 // Clears all track pointers from the list
113 // fTracks->Clear(option);
118 //-------------------------------------------------------------------
119 void AliMUONRecoEvent::EventInfo()
121 // Prints reconstructed event information
122 cout << "*********************Reco Dumper**************************" << endl;
123 cout << "Event number : " << fNevr << endl;
124 cout << " Number of tracks : " << fNtracks << endl;
125 AliMUONRecoTrack *currentTrack =0;
126 Int_t trackIndex = 0;
127 for(trackIndex=0; trackIndex<fNtracks; trackIndex++) {
128 currentTrack = (AliMUONRecoTrack*)fTracks->UncheckedAt(trackIndex);
129 cout << "Track : " << trackIndex << endl;
130 cout << " Sign : " << currentTrack->GetSign() << endl;
131 cout << " Vertex position : " << currentTrack->GetVertexPos() << endl;
133 for (Int_t axis=0; axis<3; axis++) {
134 momreco[axis] = currentTrack->GetMomReconstr(axis);
136 cout << " Reconstructed mom. : " << "Px=" << momreco[0] << "Py=" << momreco[1] << "Pz=" << momreco[2] << endl;
137 cout << " Chi squared : " << currentTrack->GetChi2r() << endl;
138 cout << " Hits positions : " << endl;
139 Double_t xhit, yhit, zhit;
140 for (Int_t chamber=0; chamber<10; chamber++) {
141 xhit = currentTrack->GetPosX(chamber);
142 yhit = currentTrack->GetPosY(chamber);
143 zhit = currentTrack->GetPosZ(chamber);
144 // cout <<" chamber" << chamber << " X=" << xhit << " Y=" << yhit << " Z=" << zhit << endl;
147 cout << "**********************************************************" << endl;
150 //-------------------------------------------------------------------
151 Bool_t AliMUONRecoEvent::MakeDumpTracks(Int_t muons, TClonesArray *tracksPtr,
152 AliMUONEventReconstructor *EventReco)
154 // This method takes the pointer of the list of reconstructed tracks from
155 // AliMUONEventReconstructor and fill the reconstructed AliMUONRecoEvent
158 cout << "Enter MakeDumpTracks..." << endl;
159 Int_t nTracks = tracksPtr->GetEntriesFast();
160 cout << "nTracks = "<< nTracks << endl;
162 cout << "AliMUONRecoEvent::MakeDumpTracks: Number of tracks is zero !" << endl;
165 cout << tracksPtr << endl;
167 cout << "AliMUONRecoEvent::MakeDumpTracks() : You should call SetRecoTracksPtr() first..." << endl;
171 Int_t noEvent = gAlice->GetHeader()->GetEvent();
172 cout << "noEvent = "<< nTracks << endl;
173 tracksPtr->Compress(); // simple loop
174 AliMUONRecoTrack *currentTrack;
175 Int_t trackIndex, nTrackHits = 0;
176 Double_t z, pYZ, bendingSlope, nonBendingSlope;
177 Double_t pX, pY, pZ; // reconstructed momentum components
178 Int_t isign, flag=0; // charge sign, flag of reconstructed track
179 Double_t alpha, beta;
180 TObjArray *hitsOnTrack = 0;
181 AliMUONTrackHit *trackHit = 0;
182 AliMUONTrack *track = 0;
183 AliMUONTrackK *trackK = 0;
184 TMatrixD *trackParamK; //AZnon
185 AliMUONTrackParam *trackParam = 0;
186 // Fill event number and number of tracks
188 fMuons = muons; //AZ - number of muons within acceptance
189 // Loop over reconstructed tracks
190 for (trackIndex=0; trackIndex<nTracks; trackIndex++) {
191 cout << " trackIndex = " << trackIndex << endl;
192 currentTrack = AddEmptyTrack();
193 cout << " currentTrack = " << currentTrack << endl;
195 if (EventReco->GetTrackMethod() == 2) { // Kalman
197 trackK = (AliMUONTrackK*) ((*tracksPtr)[trackIndex]);
198 nTrackHits = trackK->GetNTrackHits();
199 trackParamK = trackK->GetTrackParameters();
200 isign = Int_t(TMath::Sign(1., (*trackParamK)(4,0)));
202 alpha = (*trackParamK)(2,0);
203 beta = (*trackParamK)(3,0);
204 pYZ = TMath::Cos(beta)/TMath::Abs((*trackParamK)(4,0));
205 pZ = pYZ/TMath::Cos(alpha);
206 pX = TMath::Sin(beta)/TMath::Abs((*trackParamK)(4,0));
207 pY = pYZ*TMath::Sin(alpha);
209 currentTrack->SetVertexPos(z);
210 currentTrack->SetMomReconstr(pX,pY,pZ);
211 currentTrack->SetSign(isign);
212 currentTrack->SetChi2r(trackK->GetTrackQuality());
214 // Check hits on the track
215 hitsOnTrack = trackK->GetHitOnTrack();
218 for (int ihit = 0; ihit < nTrackHits; ihit++) {
219 signal += ((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetGeantSignal();
220 tht += TMath::Min (1,((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetTHTrack());
222 signal /= nTrackHits;
225 if (TMath::Nint(signal) > 0) { // signal muon
226 for (int ihit = 0; ihit < nTrackHits ; ihit++) {
227 if (((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetTHTrack() != TMath::Nint(tht)) flag++;
229 } else flag = -9; // background track
230 //cout << TMath::Nint(signal) << " " << TMath::Nint(tht) << " " << recTrackNt->fFlag << endl;
231 currentTrack->SetFlag(flag);
232 } else { // default tracking
234 track = (AliMUONTrack*) ((*tracksPtr)[trackIndex]);
235 nTrackHits = track->GetNTrackHits();
236 // track parameters at Vertex
237 trackParam = track->GetTrackParamAtVertex();
238 bendingSlope = trackParam->GetBendingSlope();
239 nonBendingSlope = trackParam->GetNonBendingSlope();
241 z = trackParam->GetZ();
242 pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum());
243 pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope);
244 pX = pZ * nonBendingSlope;
245 pY = pZ * bendingSlope;
247 if (trackParam->GetInverseBendingMomentum()<0) isign=-1; else isign=1;
248 currentTrack->SetVertexPos(z);
249 currentTrack->SetMomReconstr(pX,pY,pZ);
250 currentTrack->SetSign(isign);
251 // currentTrack->SetChi2r(trackParam->GetChi2());
252 currentTrack->SetChi2r(0);
254 // Check hits on the track
255 hitsOnTrack = track->GetTrackHitsPtr();
258 AliMUONHitForRec *hitForRec = 0;
259 for (int ihit = 0; ihit < nTrackHits; ihit++) {
260 hitForRec = ((AliMUONTrackHit*)(*hitsOnTrack)[ihit])->GetHitForRecPtr();
261 signal += hitForRec->GetGeantSignal();
262 tht += TMath::Min (1,hitForRec->GetTHTrack());
264 signal /= nTrackHits;
267 if (TMath::Nint(signal) > 0) { // signal muon
268 for (int ihit = 0; ihit < nTrackHits ; ihit++) {
269 hitForRec = ((AliMUONTrackHit*)(*hitsOnTrack)[ihit])->GetHitForRecPtr();
270 if (hitForRec->GetTHTrack() != TMath::Nint(tht)) flag++;
272 } else flag = -9; // background track
273 //cout << TMath::Nint(signal) << " " << TMath::Nint(tht) << " " << recTrackNt->fFlag << endl;
274 currentTrack->SetFlag(flag);
277 Double_t xhit,yhit,zhit;
278 // Loop over track hits
279 for (Int_t trackHitIndex = 0; trackHitIndex < nTrackHits; trackHitIndex++) {
280 if (EventReco->GetTrackMethod() == 2) { // Kalman
281 xhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetNonBendingCoor();
282 yhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetBendingCoor();
283 zhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetZ();
285 trackHit = (AliMUONTrackHit*) (*(track->GetTrackHitsPtr()))[trackHitIndex];
286 xhit = trackHit->GetHitForRecPtr()->GetNonBendingCoor();
287 yhit = trackHit->GetHitForRecPtr()->GetBendingCoor();
288 zhit = trackHit->GetHitForRecPtr()->GetZ();
290 if (trackHitIndex >= 0 && trackHitIndex < 10) {
291 currentTrack->SetHitPosition(trackHitIndex,xhit,yhit,zhit);
292 } else { cout << "track " << trackIndex << " hit out of range" << endl;}
296 cout << "Leave MakeDumpTracks..." << endl;
300 //-------------------------------------------------------------------
301 void AliMUONRecoEvent::Streamer(TBuffer &R__b)
303 // Streams an object of class AliMUONRecoEvent
304 if (R__b.IsReading()) {
306 AliMUONRecoEvent::Class()->ReadBuffer(R__b, this);
308 cout << "...writing event to file...\n";
309 AliMUONRecoEvent::Class()->WriteBuffer(R__b, this);