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af9df62e 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
e54bf126 18/// \ingroup macros
19/// \file MUONAlignment.C
20/// \brief Macro for MUON alignment using physics tracks.
21///
22/// The macro uses the AliMUONAlignment class to calculate the alignment parameters.
23/// An array for the alignment parameters is created and can be filled with
24/// initial values that will be used as starting values by the alignment
25/// algorithm.
26///
27/// By default the macro run over galice.root in the working directory. If a file list
28/// of galice.root is provided as third argument the macro will run over all files.
29/// The macro loop over the files, events and tracks. For each track
30/// AliMUONAlignment::ProcessTrack(AliMUONTrack * track) and then
31/// AliMUONAlignment::LocalFit(Int_t iTrack, Double_t *lTrackParam, Int_t
32/// lSingleFit) are called. After all tracks have been procesed and fitted
33/// AliMUONAlignment::GlobalFit(Double_t *parameters,Double_t *errors,Double_t *pulls)
34/// is called. The array parameters contains the obatained misalignement parameters.
35/// A realigned geometry is generated in a local CDB.
36///
37/// \author: B. Becker and J. Castillo
af9df62e 38
2688ea9b 39#if !defined(__CINT__) || defined(__MAKECINT__)
40
41#include "AliMUONAlignment.h"
42#include "AliMUONTrack.h"
43#include "AliMUONTrackExtrap.h"
44#include "AliMUONTrackParam.h"
45#include "AliMUONGeometryTransformer.h"
61fed964 46#include "AliESDEvent.h"
47#include "AliESDMuonTrack.h"
2688ea9b 48
49#include "AliMagFMaps.h"
50#include "AliTracker.h"
51#include "AliCDBManager.h"
52#include "AliCDBMetaData.h"
53#include "AliCDBId.h"
a02fe82d 54#include "AliGeomManager.h"
2688ea9b 55
56#include <TString.h>
2688ea9b 57#include <TError.h>
58#include <TH1.h>
59#include <TGraphErrors.h>
60#include <TFile.h>
61fed964 61#include <TTree.h>
2688ea9b 62#include <TClonesArray.h>
63#include <Riostream.h>
64
65#include <fstream>
66
67#endif
68
61fed964 69void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
af9df62e 70{
71
59830a87 72 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
a02fe82d 73 if ( ! AliGeomManager::GetGeometry() ) {
74 AliGeomManager::LoadGeometry(geoFilename);
75 if (! AliGeomManager::GetGeometry() ) {
76 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
59830a87 77 return;
78 }
79 }
80
81 // set mag field
82 // waiting for mag field in CDB
83 printf("Loading field map...\n");
84 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG);
85 AliTracker::SetFieldMap(field, kFALSE);
86 // set the magnetic field for track extrapolations
87 AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap());
88
af9df62e 89 Double_t parameters[3*156];
90 Double_t errors[3*156];
91 Double_t pulls[3*156];
92 for(Int_t k=0;k<3*156;k++) {
93 parameters[k]=0.;
94 errors[k]=0.;
95 pulls[k]=0.;
96 }
97
98 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
99
af9df62e 100 // Set initial values here, good guess may help convergence
101 // St 1
2688ea9b 102 // Int_t iPar = 0;
103 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
af9df62e 104
105 bool bLoop = kFALSE;
106 ifstream sFileList;
107 if (fileList.Contains(".list")) {
108 cout << "Reading file list: " << fileList.Data() << endl;
109 bLoop = kTRUE;
110
111 TString fullListName(".");
112 fullListName +="/";
113 fullListName +=fileList;
114 sFileList.open(fileList.Data());
115 }
116
117 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
118 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
119
120 AliMUONAlignment* alig = new AliMUONAlignment();
121 alig->InitGlobalParameters(parameters);
122
a02fe82d 123 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
124 transform->LoadGeometryData();
af9df62e 125 alig->SetGeometryTransformer(transform);
7f8c1308 126
127 // Do alignment with magnetic field off
128 alig->SetBFieldOn(kFALSE);
587965bd 129
130 // Set tracking station to use
131 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
132
133 // Fix parameters or add constraints here
134 for (Int_t iSt=0; iSt<5; iSt++)
135 if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
136
137 // Left and right sides of the detector are independent, one can choose to align
138 // only one side
139 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
140 alig->FixHalfSpectrometer(bStOnOff,bSpecLROnOff);
141
142 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
143 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
144 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
145 alig->AddConstraints(bStOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
146
af9df62e 147
148 char cFileName[100];
7f8c1308 149
af9df62e 150 Int_t lMaxFile = 1000;
151 Int_t iFile = 0;
587965bd 152 Int_t iEvent = 0;
af9df62e 153 bool bKeepLoop = kTRUE;
587965bd 154 Int_t iTrackTot=0;
155 Int_t iTrackOk=0;
156
af9df62e 157 while(bKeepLoop && iFile<lMaxFile){
158 iFile++;
159 if (bLoop) {
160 sFileList.getline(cFileName,100);
161 if (sFileList.eof()) bKeepLoop = kFALSE;
162 }
163 else {
61fed964 164 sprintf(cFileName,esdFileName.Data());
af9df62e 165 bKeepLoop = kFALSE;
166 }
61fed964 167 if (!strstr(cFileName,"AliESDs.root")) continue;
af9df62e 168 cout << "Using file: " << cFileName << endl;
61fed964 169
170 // load ESD event
171 TFile* esdFile = TFile::Open(cFileName); // open the file
172 if (!esdFile || !esdFile->IsOpen()) {
173 cout << "opening ESD file " << cFileName << "failed" << endl;
174 continue;
175 }
176 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
177 if (!esdTree) {
178 cout << "no ESD tree found" << endl;
179 esdFile->Close();
180 continue;
181 }
182 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
183 esdEvent->ReadFromTree(esdTree);
7f8c1308 184
61fed964 185 Int_t nevents = esdTree->GetEntries();
587965bd 186 cout << "... with " << nevents << endl;
af9df62e 187 for(Int_t event = 0; event < nevents; event++) {
587965bd 188 if (iEvent >= nEvents){
189 bKeepLoop = kFALSE;
190 break;
191 }
192 iEvent++;
193
61fed964 194 if (esdTree->GetEvent(event) <= 0) {
195 cout << "fails to read ESD object for event " << event << endl;
196 continue;
197 }
7f8c1308 198
61fed964 199 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
200 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
201 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
202 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
203 if (!esdTrack->ClustersStored()) continue;
204 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
af9df62e 205 fInvBenMom->Fill(invBenMom);
206 fBenMom->Fill(1./invBenMom);
207 if (TMath::Abs(invBenMom)<=1.04) {
61fed964 208 AliMUONTrack track(*esdTrack);
209 alig->ProcessTrack(&track);
af9df62e 210 alig->LocalFit(iTrackOk++,trackParams,0);
211 }
587965bd 212 iTrackTot++;
af9df62e 213 }
214 }
61fed964 215 delete esdEvent;
216 esdFile->Close();
587965bd 217 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
af9df62e 218 }
219 alig->GlobalFit(parameters,errors,pulls);
220
221 cout << "Done with GlobalFit " << endl;
222
223 // Store results
224 Double_t DEid[156] = {0};
225 Double_t MSDEx[156] = {0};
226 Double_t MSDEy[156] = {0};
227 Double_t MSDExt[156] = {0};
228 Double_t MSDEyt[156] = {0};
229 Double_t DEidErr[156] = {0};
230 Double_t MSDExErr[156] = {0};
231 Double_t MSDEyErr[156] = {0};
232 Double_t MSDExtErr[156] = {0};
233 Double_t MSDEytErr[156] = {0};
234 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
235 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
2688ea9b 236 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
af9df62e 237 Int_t idOffset = 0; // 400
238 Int_t lSDetElemCh = 0;
239 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
240 DEidErr[iDE] = 0.;
241 DEid[iDE] = idOffset+100;
242 DEid[iDE] += iDE;
243 lSDetElemCh = 0;
244 for(Int_t iCh=0; iCh<9; iCh++){
245 lSDetElemCh += lNDetElemCh[iCh];
246 if (iDE>=lSDetElemCh) {
247 DEid[iDE] += 100;
248 DEid[iDE] -= lNDetElemCh[iCh];
249 }
250 }
251 MSDEx[iDE]=parameters[3*iDE+0];
252 MSDEy[iDE]=parameters[3*iDE+1];
253 MSDExt[iDE]=parameters[3*iDE+2];
254 MSDEyt[iDE]=parameters[3*iDE+2];
255 MSDExErr[iDE]=(Double_t)alig->GetParError(3*iDE+0);
256 MSDEyErr[iDE]=(Double_t)alig->GetParError(3*iDE+1);
257 MSDExtErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
258 MSDEytErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
259 }
260
261 cout << "Let's create graphs ... " << endl;
262
263 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
264 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
265 TGraphErrors *gMSDExt = new TGraphErrors(lNDetElem,DEid,MSDExt,DEidErr,MSDExtErr);
266 TGraphErrors *gMSDEyt = new TGraphErrors(lNDetElem,DEid,MSDEyt,DEidErr,MSDEytErr);
267
268 cout << "... graphs created, open file ... " << endl;
269
270 TFile *hFile = new TFile("measShifts.root","RECREATE");
271
272 cout << "... file opened ... " << endl;
273
274 gMSDEx->Write("gMSDEx");
275 gMSDEy->Write("gMSDEy");
276 gMSDExt->Write("gMSDExt");
277 gMSDEyt->Write("gMSDEyt");
278 fInvBenMom->Write();
279 fBenMom->Write();
280 hFile->Close();
281
282 cout << "... and closed!" << endl;
283 // Re Align
284 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
285 newTransform->WriteTransformations("transform2ReAlign.dat");
286
287 // Generate realigned data in local cdb
2688ea9b 288 const TClonesArray* array = newTransform->GetMisAlignmentData();
af9df62e 289
290 // CDB manager
291 AliCDBManager* cdbManager = AliCDBManager::Instance();
292 cdbManager->SetDefaultStorage("local://ReAlignCDB");
293
294 AliCDBMetaData* cdbData = new AliCDBMetaData();
295 cdbData->SetResponsible("Dimuon Offline project");
296 cdbData->SetComment("MUON alignment objects with residual misalignment");
297 AliCDBId id("MUON/Align/Data", 0, 0);
2688ea9b 298 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);
af9df62e 299
61fed964 300}
301