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>
45 #include <TClonesArray.h>
50 #include <TParticle.h>
52 #include "AliMUONRecoEvent.h"
53 #include "AliMUONRecoTrack.h"
54 #include "AliMUONEventReconstructor.h"
55 #include "AliMUONTrack.h"
56 #include "AliMUONTrackK.h"
57 #include "AliMUONTrackParam.h"
58 #include "AliMUONHitForRec.h"
59 #include "AliMUONTrackHit.h"
60 #include "AliHeader.h"
62 ClassImp(AliMUONRecoEvent)
64 //-------------------------------------------------------------------
65 AliMUONRecoEvent::AliMUONRecoEvent(Int_t eventNo)
68 // Reconstructed event constructor
69 fTracks = new TClonesArray("AliMUONRecoTrack",200);
74 //-------------------------------------------------------------------
75 AliMUONRecoEvent::AliMUONRecoEvent(const AliMUONRecoEvent& rhs)
78 // Protected copy constructor
80 Fatal("AliMUONRecoEventModule", "Not implemented.");
83 //-------------------------------------------------------------------
84 AliMUONRecoEvent::~AliMUONRecoEvent()
86 // Destructor of AliMUONRecoEvent
92 //-------------------------------------------------------------------
94 AliMUONRecoEvent::operator=(const AliMUONRecoEvent& rhs)
96 // Protected assignement operator
98 if (this == &rhs) return *this;
100 Fatal("operator=", "Not implemented.");
105 //-------------------------------------------------------------------
106 AliMUONRecoTrack* AliMUONRecoEvent::AddEmptyTrack()
108 // Add a empty AliMUONRecoTrackObject to the track list
109 TClonesArray &dumptracks = *fTracks;
110 return (new(dumptracks[fNtracks++])AliMUONRecoTrack(kTRUE));
113 //-------------------------------------------------------------------
114 void AliMUONRecoEvent::Clear(Option_t * /*option*/)
116 // Clears all track pointers from the list
117 // fTracks->Clear(option);
122 //-------------------------------------------------------------------
123 void AliMUONRecoEvent::EventInfo()
125 // Prints reconstructed event information
126 cout << "*********************Reco Dumper**************************" << endl;
127 cout << "Event number : " << fNevr << endl;
128 cout << " Number of tracks : " << fNtracks << endl;
129 AliMUONRecoTrack *currentTrack =0;
130 Int_t trackIndex = 0;
131 for(trackIndex=0; trackIndex<fNtracks; trackIndex++) {
132 currentTrack = (AliMUONRecoTrack*)fTracks->UncheckedAt(trackIndex);
133 cout << "Track : " << trackIndex << endl;
134 cout << " Sign : " << currentTrack->GetSign() << endl;
135 cout << " Vertex position : " << currentTrack->GetVertexPos() << endl;
137 for (Int_t axis=0; axis<3; axis++) {
138 momreco[axis] = currentTrack->GetMomReconstr(axis);
140 cout << " Reconstructed mom. : " << "Px=" << momreco[0] << "Py=" << momreco[1] << "Pz=" << momreco[2] << endl;
141 cout << " Chi squared : " << currentTrack->GetChi2r() << endl;
142 cout << " Hits positions : " << endl;
143 Double_t xhit, yhit, zhit;
144 for (Int_t chamber=0; chamber<10; chamber++) {
145 xhit = currentTrack->GetPosX(chamber);
146 yhit = currentTrack->GetPosY(chamber);
147 zhit = currentTrack->GetPosZ(chamber);
148 // cout <<" chamber" << chamber << " X=" << xhit << " Y=" << yhit << " Z=" << zhit << endl;
151 cout << "**********************************************************" << endl;
154 //-------------------------------------------------------------------
155 Bool_t AliMUONRecoEvent::MakeDumpTracks(Int_t muons, TClonesArray *tracksPtr,
156 AliMUONEventReconstructor *EventReco)
158 // This method takes the pointer of the list of reconstructed tracks from
159 // AliMUONEventReconstructor and fill the reconstructed AliMUONRecoEvent
162 cout << "Enter MakeDumpTracks..." << endl;
163 Int_t nTracks = tracksPtr->GetEntriesFast();
164 cout << "nTracks = "<< nTracks << endl;
166 cout << "AliMUONRecoEvent::MakeDumpTracks: Number of tracks is zero !" << endl;
169 cout << tracksPtr << endl;
171 cout << "AliMUONRecoEvent::MakeDumpTracks() : You should call SetRecoTracksPtr() first..." << endl;
175 Int_t noEvent = gAlice->GetHeader()->GetEvent();
176 cout << "noEvent = "<< nTracks << endl;
177 tracksPtr->Compress(); // simple loop
178 AliMUONRecoTrack *currentTrack;
179 Int_t trackIndex, nTrackHits = 0;
180 Double_t z, pYZ, bendingSlope, nonBendingSlope;
181 Double_t pX, pY, pZ; // reconstructed momentum components
182 Int_t isign, flag=0; // charge sign, flag of reconstructed track
183 Double_t alpha, beta;
184 TObjArray *hitsOnTrack = 0;
185 AliMUONTrackHit *trackHit = 0;
186 AliMUONTrack *track = 0;
187 AliMUONTrackK *trackK = 0;
188 TMatrixD *trackParamK; //AZnon
189 AliMUONTrackParam *trackParam = 0;
190 // Fill event number and number of tracks
192 fMuons = muons; //AZ - number of muons within acceptance
193 // Loop over reconstructed tracks
194 for (trackIndex=0; trackIndex<nTracks; trackIndex++) {
195 cout << " trackIndex = " << trackIndex << endl;
196 currentTrack = AddEmptyTrack();
197 cout << " currentTrack = " << currentTrack << endl;
199 if (EventReco->GetTrackMethod() == 2) { // Kalman
201 trackK = (AliMUONTrackK*) ((*tracksPtr)[trackIndex]);
202 nTrackHits = trackK->GetNTrackHits();
203 trackParamK = trackK->GetTrackParameters();
204 isign = Int_t(TMath::Sign(1., (*trackParamK)(4,0)));
206 alpha = (*trackParamK)(2,0);
207 beta = (*trackParamK)(3,0);
208 pYZ = TMath::Cos(beta)/TMath::Abs((*trackParamK)(4,0));
209 pZ = pYZ/TMath::Cos(alpha);
210 pX = TMath::Sin(beta)/TMath::Abs((*trackParamK)(4,0));
211 pY = pYZ*TMath::Sin(alpha);
213 currentTrack->SetVertexPos(z);
214 currentTrack->SetMomReconstr(pX,pY,pZ);
215 currentTrack->SetSign(isign);
216 currentTrack->SetChi2r(trackK->GetTrackQuality());
218 // Check hits on the track
219 hitsOnTrack = trackK->GetHitOnTrack();
222 for (int ihit = 0; ihit < nTrackHits; ihit++) {
223 signal += ((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetGeantSignal();
224 tht += TMath::Min (1,((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetTHTrack());
226 signal /= nTrackHits;
229 if (TMath::Nint(signal) > 0) { // signal muon
230 for (int ihit = 0; ihit < nTrackHits ; ihit++) {
231 if (((AliMUONHitForRec*)((*hitsOnTrack)[ihit]))->GetTHTrack() != TMath::Nint(tht)) flag++;
233 } else flag = -9; // background track
234 //cout << TMath::Nint(signal) << " " << TMath::Nint(tht) << " " << recTrackNt->fFlag << endl;
235 currentTrack->SetFlag(flag);
236 } else { // default tracking
238 track = (AliMUONTrack*) ((*tracksPtr)[trackIndex]);
239 nTrackHits = track->GetNTrackHits();
240 // track parameters at Vertex
241 trackParam = track->GetTrackParamAtVertex();
242 bendingSlope = trackParam->GetBendingSlope();
243 nonBendingSlope = trackParam->GetNonBendingSlope();
245 z = trackParam->GetZ();
246 pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum());
247 pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope);
248 pX = pZ * nonBendingSlope;
249 pY = pZ * bendingSlope;
251 if (trackParam->GetInverseBendingMomentum()<0) isign=-1; else isign=1;
252 currentTrack->SetVertexPos(z);
253 currentTrack->SetMomReconstr(pX,pY,pZ);
254 currentTrack->SetSign(isign);
255 // currentTrack->SetChi2r(trackParam->GetChi2());
256 currentTrack->SetChi2r(0);
258 // Check hits on the track
259 hitsOnTrack = track->GetTrackHitsPtr();
262 AliMUONHitForRec *hitForRec = 0;
263 for (int ihit = 0; ihit < nTrackHits; ihit++) {
264 hitForRec = ((AliMUONTrackHit*)(*hitsOnTrack)[ihit])->GetHitForRecPtr();
265 signal += hitForRec->GetGeantSignal();
266 tht += TMath::Min (1,hitForRec->GetTHTrack());
268 signal /= nTrackHits;
271 if (TMath::Nint(signal) > 0) { // signal muon
272 for (int ihit = 0; ihit < nTrackHits ; ihit++) {
273 hitForRec = ((AliMUONTrackHit*)(*hitsOnTrack)[ihit])->GetHitForRecPtr();
274 if (hitForRec->GetTHTrack() != TMath::Nint(tht)) flag++;
276 } else flag = -9; // background track
277 //cout << TMath::Nint(signal) << " " << TMath::Nint(tht) << " " << recTrackNt->fFlag << endl;
278 currentTrack->SetFlag(flag);
281 Double_t xhit,yhit,zhit;
282 // Loop over track hits
283 for (Int_t trackHitIndex = 0; trackHitIndex < nTrackHits; trackHitIndex++) {
284 if (EventReco->GetTrackMethod() == 2) { // Kalman
285 xhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetNonBendingCoor();
286 yhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetBendingCoor();
287 zhit = ((AliMUONHitForRec*)((*hitsOnTrack)[trackHitIndex]))->GetZ();
289 trackHit = (AliMUONTrackHit*) (*(track->GetTrackHitsPtr()))[trackHitIndex];
290 xhit = trackHit->GetHitForRecPtr()->GetNonBendingCoor();
291 yhit = trackHit->GetHitForRecPtr()->GetBendingCoor();
292 zhit = trackHit->GetHitForRecPtr()->GetZ();
294 if (trackHitIndex >= 0 && trackHitIndex < 10) {
295 currentTrack->SetHitPosition(trackHitIndex,xhit,yhit,zhit);
296 } else { cout << "track " << trackIndex << " hit out of range" << endl;}
300 cout << "Leave MakeDumpTracks..." << endl;
304 //-------------------------------------------------------------------
305 void AliMUONRecoEvent::Streamer(TBuffer &R__b)
307 // Streams an object of class AliMUONRecoEvent
308 if (R__b.IsReading()) {
310 AliMUONRecoEvent::Class()->ReadBuffer(R__b, this);
312 cout << "...writing event to file...\n";
313 AliMUONRecoEvent::Class()->WriteBuffer(R__b, this);