In alignment code:
[u/mrichter/AliRoot.git] / MUON / MUONAlignment.C
CommitLineData
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"
103e6575 46#include "AliMUONESDInterface.h"
47
61fed964 48#include "AliESDEvent.h"
49#include "AliESDMuonTrack.h"
f7a1cc68 50#include "AliMagF.h"
2688ea9b 51#include "AliTracker.h"
52#include "AliCDBManager.h"
53#include "AliCDBMetaData.h"
54#include "AliCDBId.h"
a02fe82d 55#include "AliGeomManager.h"
2688ea9b 56
57#include <TString.h>
2688ea9b 58#include <TError.h>
59#include <TH1.h>
60#include <TGraphErrors.h>
61#include <TFile.h>
61fed964 62#include <TTree.h>
2688ea9b 63#include <TClonesArray.h>
64#include <Riostream.h>
65
66#include <fstream>
67
68#endif
69
61fed964 70void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
af9df62e 71{
72
59830a87 73 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
a02fe82d 74 if ( ! AliGeomManager::GetGeometry() ) {
75 AliGeomManager::LoadGeometry(geoFilename);
76 if (! AliGeomManager::GetGeometry() ) {
77 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
59830a87 78 return;
79 }
80 }
81
82 // set mag field
83 // waiting for mag field in CDB
f7a1cc68 84 if (!TGeoGlobalMagField::Instance()->GetField()) {
85 printf("Loading field map...\n");
723b0b5b 86 // AliMagF* field = new AliMagF("Maps","Maps",2,1.,1., 10.,AliMagF::k5kG);
87 AliMagF* field = new AliMagF("Maps","Maps",2,0.,0., 10.,AliMagF::k5kG);
f7a1cc68 88 TGeoGlobalMagField::Instance()->SetField(field);
89 }
59830a87 90 // set the magnetic field for track extrapolations
f7a1cc68 91 AliMUONTrackExtrap::SetField();
59830a87 92
723b0b5b 93 Double_t parameters[4*156];
94 Double_t errors[4*156];
95 Double_t pulls[4*156];
96 for(Int_t k=0;k<4*156;k++) {
af9df62e 97 parameters[k]=0.;
98 errors[k]=0.;
99 pulls[k]=0.;
100 }
101
102 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
103
af9df62e 104 // Set initial values here, good guess may help convergence
105 // St 1
2688ea9b 106 // Int_t iPar = 0;
107 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
af9df62e 108
109 bool bLoop = kFALSE;
110 ifstream sFileList;
111 if (fileList.Contains(".list")) {
112 cout << "Reading file list: " << fileList.Data() << endl;
113 bLoop = kTRUE;
114
115 TString fullListName(".");
116 fullListName +="/";
117 fullListName +=fileList;
118 sFileList.open(fileList.Data());
119 }
120
121 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
122 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
123
124 AliMUONAlignment* alig = new AliMUONAlignment();
125 alig->InitGlobalParameters(parameters);
126
a02fe82d 127 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
128 transform->LoadGeometryData();
af9df62e 129 alig->SetGeometryTransformer(transform);
7f8c1308 130
131 // Do alignment with magnetic field off
132 alig->SetBFieldOn(kFALSE);
587965bd 133
134 // Set tracking station to use
135 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
d8ad38e5 136 Bool_t bChOnOff[10] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
587965bd 137
f3e4edfb 138 // Set degrees of freedom to align (see AliMUONAlignment)
139 alig->AllowVariations(bChOnOff);
140
587965bd 141 // Fix parameters or add constraints here
d8ad38e5 142// for (Int_t iSt=0; iSt<5; iSt++)
143// if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
144 for (Int_t iCh=0; iCh<10; iCh++)
145 if (!bChOnOff[iCh]) alig->FixChamber(iCh+1);
587965bd 146
147 // Left and right sides of the detector are independent, one can choose to align
148 // only one side
149 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
d8ad38e5 150 alig->FixHalfSpectrometer(bChOnOff,bSpecLROnOff);
151
152 alig->SetChOnOff(bChOnOff);
153 alig->SetSpecLROnOff(bChOnOff);
587965bd 154
723b0b5b 155 // Here we can fix some detection elements
156 alig->FixDetElem(908);
157 alig->FixDetElem(1020);
158
587965bd 159 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
160 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
161 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
723b0b5b 162 // alig->AddConstraints(bChOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
587965bd 163
af9df62e 164
165 char cFileName[100];
7f8c1308 166
af9df62e 167 Int_t lMaxFile = 1000;
168 Int_t iFile = 0;
587965bd 169 Int_t iEvent = 0;
af9df62e 170 bool bKeepLoop = kTRUE;
587965bd 171 Int_t iTrackTot=0;
172 Int_t iTrackOk=0;
173
af9df62e 174 while(bKeepLoop && iFile<lMaxFile){
175 iFile++;
176 if (bLoop) {
177 sFileList.getline(cFileName,100);
178 if (sFileList.eof()) bKeepLoop = kFALSE;
179 }
180 else {
61fed964 181 sprintf(cFileName,esdFileName.Data());
af9df62e 182 bKeepLoop = kFALSE;
183 }
723b0b5b 184 if (!strstr(cFileName,"AliESDs")) continue;
af9df62e 185 cout << "Using file: " << cFileName << endl;
61fed964 186
187 // load ESD event
188 TFile* esdFile = TFile::Open(cFileName); // open the file
189 if (!esdFile || !esdFile->IsOpen()) {
190 cout << "opening ESD file " << cFileName << "failed" << endl;
191 continue;
192 }
193 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
194 if (!esdTree) {
195 cout << "no ESD tree found" << endl;
196 esdFile->Close();
197 continue;
198 }
199 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
200 esdEvent->ReadFromTree(esdTree);
7f8c1308 201
61fed964 202 Int_t nevents = esdTree->GetEntries();
587965bd 203 cout << "... with " << nevents << endl;
af9df62e 204 for(Int_t event = 0; event < nevents; event++) {
587965bd 205 if (iEvent >= nEvents){
206 bKeepLoop = kFALSE;
207 break;
208 }
209 iEvent++;
210
61fed964 211 if (esdTree->GetEvent(event) <= 0) {
212 cout << "fails to read ESD object for event " << event << endl;
213 continue;
214 }
7f8c1308 215
61fed964 216 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
217 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
218 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
219 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
220 if (!esdTrack->ClustersStored()) continue;
221 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
af9df62e 222 fInvBenMom->Fill(invBenMom);
223 fBenMom->Fill(1./invBenMom);
224 if (TMath::Abs(invBenMom)<=1.04) {
103e6575 225 AliMUONTrack track;
ad3c6eda 226 AliMUONESDInterface::ESDToMUON(*esdTrack, track);
61fed964 227 alig->ProcessTrack(&track);
af9df62e 228 alig->LocalFit(iTrackOk++,trackParams,0);
229 }
587965bd 230 iTrackTot++;
af9df62e 231 }
232 }
61fed964 233 delete esdEvent;
234 esdFile->Close();
587965bd 235 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
af9df62e 236 }
237 alig->GlobalFit(parameters,errors,pulls);
238
239 cout << "Done with GlobalFit " << endl;
240
241 // Store results
242 Double_t DEid[156] = {0};
243 Double_t MSDEx[156] = {0};
244 Double_t MSDEy[156] = {0};
723b0b5b 245 Double_t MSDEz[156] = {0};
246 Double_t MSDEp[156] = {0};
af9df62e 247 Double_t DEidErr[156] = {0};
248 Double_t MSDExErr[156] = {0};
249 Double_t MSDEyErr[156] = {0};
723b0b5b 250 Double_t MSDEzErr[156] = {0};
251 Double_t MSDEpErr[156] = {0};
af9df62e 252 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
253 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
2688ea9b 254 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
af9df62e 255 Int_t idOffset = 0; // 400
256 Int_t lSDetElemCh = 0;
257 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
258 DEidErr[iDE] = 0.;
259 DEid[iDE] = idOffset+100;
260 DEid[iDE] += iDE;
261 lSDetElemCh = 0;
262 for(Int_t iCh=0; iCh<9; iCh++){
263 lSDetElemCh += lNDetElemCh[iCh];
264 if (iDE>=lSDetElemCh) {
265 DEid[iDE] += 100;
266 DEid[iDE] -= lNDetElemCh[iCh];
267 }
268 }
723b0b5b 269 MSDEx[iDE]=parameters[4*iDE+0];
270 MSDEy[iDE]=parameters[4*iDE+1];
271 MSDEz[iDE]=parameters[4*iDE+3];
272 MSDEp[iDE]=parameters[4*iDE+2];
273 MSDExErr[iDE]=(Double_t)alig->GetParError(4*iDE+0);
274 MSDEyErr[iDE]=(Double_t)alig->GetParError(4*iDE+1);
275 MSDEzErr[iDE]=(Double_t)alig->GetParError(4*iDE+3);
276 MSDEpErr[iDE]=(Double_t)alig->GetParError(4*iDE+2);
af9df62e 277 }
278
279 cout << "Let's create graphs ... " << endl;
280
281 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
282 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
723b0b5b 283 TGraphErrors *gMSDEz = new TGraphErrors(lNDetElem,DEid,MSDEz,DEidErr,MSDEzErr);
284 TGraphErrors *gMSDEp = new TGraphErrors(lNDetElem,DEid,MSDEp,DEidErr,MSDEpErr);
af9df62e 285
286 cout << "... graphs created, open file ... " << endl;
287
288 TFile *hFile = new TFile("measShifts.root","RECREATE");
289
290 cout << "... file opened ... " << endl;
291
292 gMSDEx->Write("gMSDEx");
293 gMSDEy->Write("gMSDEy");
723b0b5b 294 gMSDEz->Write("gMSDEz");
295 gMSDEp->Write("gMSDEp");
af9df62e 296 fInvBenMom->Write();
297 fBenMom->Write();
298 hFile->Close();
299
300 cout << "... and closed!" << endl;
301 // Re Align
302 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
303 newTransform->WriteTransformations("transform2ReAlign.dat");
304
305 // Generate realigned data in local cdb
2688ea9b 306 const TClonesArray* array = newTransform->GetMisAlignmentData();
4818a9b7 307
308 // 100 mum residual resolution for chamber misalignments?
309 alig->SetAlignmentResolution(array,-1,0.01,0.01,0.004,0.003);
af9df62e 310
311 // CDB manager
312 AliCDBManager* cdbManager = AliCDBManager::Instance();
313 cdbManager->SetDefaultStorage("local://ReAlignCDB");
314
315 AliCDBMetaData* cdbData = new AliCDBMetaData();
316 cdbData->SetResponsible("Dimuon Offline project");
317 cdbData->SetComment("MUON alignment objects with residual misalignment");
d8ad38e5 318 AliCDBId id("MUON/Align/Data", 0, AliCDBRunRange::Infinity());
2688ea9b 319 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);
af9df62e 320
61fed964 321}
322