DQM configure file
[u/mrichter/AliRoot.git] / MUON / MUONAlignment.C
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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"
a99c3449 43#include "AliMUONRecoParam.h"
2688ea9b 44#include "AliMUONTrackParam.h"
45#include "AliMUONGeometryTransformer.h"
103e6575 46#include "AliMUONESDInterface.h"
a99c3449 47#include "AliMUONCDB.h"
103e6575 48
61fed964 49#include "AliESDEvent.h"
50#include "AliESDMuonTrack.h"
2688ea9b 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
a99c3449 81 // load necessary data from OCDB
cd8521dd 82 AliCDBManager* cdbManager = AliCDBManager::Instance();
83 cdbManager->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
84 cdbManager->SetRun(0);
a99c3449 85 if (!AliMUONCDB::LoadField()) return;
86 AliMUONRecoParam* recoParam = AliMUONCDB::LoadRecoParam();
87 if (!recoParam) return;
88
89 // reset tracker for restoring initial track parameters at cluster
90 AliMUONESDInterface::ResetTracker(recoParam);
59830a87 91
723b0b5b 92 Double_t parameters[4*156];
93 Double_t errors[4*156];
94 Double_t pulls[4*156];
95 for(Int_t k=0;k<4*156;k++) {
af9df62e 96 parameters[k]=0.;
97 errors[k]=0.;
98 pulls[k]=0.;
99 }
100
101 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
102
af9df62e 103 // Set initial values here, good guess may help convergence
104 // St 1
2688ea9b 105 // Int_t iPar = 0;
106 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
af9df62e 107
108 bool bLoop = kFALSE;
109 ifstream sFileList;
110 if (fileList.Contains(".list")) {
111 cout << "Reading file list: " << fileList.Data() << endl;
112 bLoop = kTRUE;
113
114 TString fullListName(".");
115 fullListName +="/";
116 fullListName +=fileList;
117 sFileList.open(fileList.Data());
118 }
119
120 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
121 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
122
123 AliMUONAlignment* alig = new AliMUONAlignment();
124 alig->InitGlobalParameters(parameters);
125
a02fe82d 126 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
127 transform->LoadGeometryData();
af9df62e 128 alig->SetGeometryTransformer(transform);
7f8c1308 129
130 // Do alignment with magnetic field off
131 alig->SetBFieldOn(kFALSE);
587965bd 132
133 // Set tracking station to use
134 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
d8ad38e5 135 Bool_t bChOnOff[10] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
587965bd 136
f3e4edfb 137 // Set degrees of freedom to align (see AliMUONAlignment)
138 alig->AllowVariations(bChOnOff);
139
587965bd 140 // Fix parameters or add constraints here
d8ad38e5 141// for (Int_t iSt=0; iSt<5; iSt++)
142// if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
143 for (Int_t iCh=0; iCh<10; iCh++)
144 if (!bChOnOff[iCh]) alig->FixChamber(iCh+1);
587965bd 145
146 // Left and right sides of the detector are independent, one can choose to align
147 // only one side
148 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
d8ad38e5 149 alig->FixHalfSpectrometer(bChOnOff,bSpecLROnOff);
150
151 alig->SetChOnOff(bChOnOff);
152 alig->SetSpecLROnOff(bChOnOff);
587965bd 153
723b0b5b 154 // Here we can fix some detection elements
155 alig->FixDetElem(908);
156 alig->FixDetElem(1020);
157
587965bd 158 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
159 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
160 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
723b0b5b 161 // alig->AddConstraints(bChOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
587965bd 162
af9df62e 163
164 char cFileName[100];
7f8c1308 165
af9df62e 166 Int_t lMaxFile = 1000;
167 Int_t iFile = 0;
587965bd 168 Int_t iEvent = 0;
af9df62e 169 bool bKeepLoop = kTRUE;
587965bd 170 Int_t iTrackTot=0;
171 Int_t iTrackOk=0;
172
af9df62e 173 while(bKeepLoop && iFile<lMaxFile){
174 iFile++;
175 if (bLoop) {
176 sFileList.getline(cFileName,100);
177 if (sFileList.eof()) bKeepLoop = kFALSE;
178 }
179 else {
61fed964 180 sprintf(cFileName,esdFileName.Data());
af9df62e 181 bKeepLoop = kFALSE;
182 }
723b0b5b 183 if (!strstr(cFileName,"AliESDs")) continue;
af9df62e 184 cout << "Using file: " << cFileName << endl;
61fed964 185
186 // load ESD event
187 TFile* esdFile = TFile::Open(cFileName); // open the file
188 if (!esdFile || !esdFile->IsOpen()) {
189 cout << "opening ESD file " << cFileName << "failed" << endl;
190 continue;
191 }
192 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
193 if (!esdTree) {
194 cout << "no ESD tree found" << endl;
195 esdFile->Close();
196 continue;
197 }
198 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
199 esdEvent->ReadFromTree(esdTree);
7f8c1308 200
61fed964 201 Int_t nevents = esdTree->GetEntries();
587965bd 202 cout << "... with " << nevents << endl;
af9df62e 203 for(Int_t event = 0; event < nevents; event++) {
587965bd 204 if (iEvent >= nEvents){
205 bKeepLoop = kFALSE;
206 break;
207 }
208 iEvent++;
209
61fed964 210 if (esdTree->GetEvent(event) <= 0) {
211 cout << "fails to read ESD object for event " << event << endl;
212 continue;
213 }
7f8c1308 214
61fed964 215 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
216 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
217 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
218 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
fe0324de 219 if (!esdTrack->ContainTrackerData()) continue;
61fed964 220 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
af9df62e 221 fInvBenMom->Fill(invBenMom);
222 fBenMom->Fill(1./invBenMom);
223 if (TMath::Abs(invBenMom)<=1.04) {
103e6575 224 AliMUONTrack track;
ad3c6eda 225 AliMUONESDInterface::ESDToMUON(*esdTrack, track);
61fed964 226 alig->ProcessTrack(&track);
af9df62e 227 alig->LocalFit(iTrackOk++,trackParams,0);
228 }
587965bd 229 iTrackTot++;
af9df62e 230 }
231 }
61fed964 232 delete esdEvent;
233 esdFile->Close();
587965bd 234 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
af9df62e 235 }
236 alig->GlobalFit(parameters,errors,pulls);
237
238 cout << "Done with GlobalFit " << endl;
239
240 // Store results
241 Double_t DEid[156] = {0};
242 Double_t MSDEx[156] = {0};
243 Double_t MSDEy[156] = {0};
723b0b5b 244 Double_t MSDEz[156] = {0};
245 Double_t MSDEp[156] = {0};
af9df62e 246 Double_t DEidErr[156] = {0};
247 Double_t MSDExErr[156] = {0};
248 Double_t MSDEyErr[156] = {0};
723b0b5b 249 Double_t MSDEzErr[156] = {0};
250 Double_t MSDEpErr[156] = {0};
af9df62e 251 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
252 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
2688ea9b 253 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
af9df62e 254 Int_t idOffset = 0; // 400
255 Int_t lSDetElemCh = 0;
256 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
257 DEidErr[iDE] = 0.;
258 DEid[iDE] = idOffset+100;
259 DEid[iDE] += iDE;
260 lSDetElemCh = 0;
261 for(Int_t iCh=0; iCh<9; iCh++){
262 lSDetElemCh += lNDetElemCh[iCh];
263 if (iDE>=lSDetElemCh) {
264 DEid[iDE] += 100;
265 DEid[iDE] -= lNDetElemCh[iCh];
266 }
267 }
723b0b5b 268 MSDEx[iDE]=parameters[4*iDE+0];
269 MSDEy[iDE]=parameters[4*iDE+1];
270 MSDEz[iDE]=parameters[4*iDE+3];
271 MSDEp[iDE]=parameters[4*iDE+2];
272 MSDExErr[iDE]=(Double_t)alig->GetParError(4*iDE+0);
273 MSDEyErr[iDE]=(Double_t)alig->GetParError(4*iDE+1);
274 MSDEzErr[iDE]=(Double_t)alig->GetParError(4*iDE+3);
275 MSDEpErr[iDE]=(Double_t)alig->GetParError(4*iDE+2);
af9df62e 276 }
277
278 cout << "Let's create graphs ... " << endl;
279
280 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
281 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
723b0b5b 282 TGraphErrors *gMSDEz = new TGraphErrors(lNDetElem,DEid,MSDEz,DEidErr,MSDEzErr);
283 TGraphErrors *gMSDEp = new TGraphErrors(lNDetElem,DEid,MSDEp,DEidErr,MSDEpErr);
af9df62e 284
285 cout << "... graphs created, open file ... " << endl;
286
287 TFile *hFile = new TFile("measShifts.root","RECREATE");
288
289 cout << "... file opened ... " << endl;
290
291 gMSDEx->Write("gMSDEx");
292 gMSDEy->Write("gMSDEy");
723b0b5b 293 gMSDEz->Write("gMSDEz");
294 gMSDEp->Write("gMSDEp");
af9df62e 295 fInvBenMom->Write();
296 fBenMom->Write();
297 hFile->Close();
298
299 cout << "... and closed!" << endl;
300 // Re Align
301 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
302 newTransform->WriteTransformations("transform2ReAlign.dat");
303
304 // Generate realigned data in local cdb
2688ea9b 305 const TClonesArray* array = newTransform->GetMisAlignmentData();
4818a9b7 306
307 // 100 mum residual resolution for chamber misalignments?
308 alig->SetAlignmentResolution(array,-1,0.01,0.01,0.004,0.003);
cd8521dd 309
310 cdbManager->SetSpecificStorage("MUON/Align/Data","local://ReAlignCDB");
af9df62e 311
312 AliCDBMetaData* cdbData = new AliCDBMetaData();
313 cdbData->SetResponsible("Dimuon Offline project");
314 cdbData->SetComment("MUON alignment objects with residual misalignment");
d8ad38e5 315 AliCDBId id("MUON/Align/Data", 0, AliCDBRunRange::Infinity());
2688ea9b 316 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);
af9df62e 317
61fed964 318}
319