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 **************************************************************************/
19 /// \file MUONAlignment.C
20 /// \brief Macro for MUON alignment using physics tracks.
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
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.
37 /// \author: B. Becker and J. Castillo
39 #if !defined(__CINT__) || defined(__MAKECINT__)
41 #include "AliMUONAlignment.h"
42 #include "AliMUONTrack.h"
43 #include "AliMUONTrackExtrap.h"
44 #include "AliMUONTrackParam.h"
45 #include "AliMUONGeometryTransformer.h"
46 #include "AliESDEvent.h"
47 #include "AliESDMuonTrack.h"
49 #include "AliMagFMaps.h"
50 #include "AliTracker.h"
51 #include "AliCDBManager.h"
52 #include "AliCDBMetaData.h"
54 #include "AliGeomManager.h"
59 #include <TGraphErrors.h>
62 #include <TClonesArray.h>
63 #include <Riostream.h>
69 void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
72 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
73 if ( ! AliGeomManager::GetGeometry() ) {
74 AliGeomManager::LoadGeometry(geoFilename);
75 if (! AliGeomManager::GetGeometry() ) {
76 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
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());
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++) {
98 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
100 // Set initial values here, good guess may help convergence
103 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
107 if (fileList.Contains(".list")) {
108 cout << "Reading file list: " << fileList.Data() << endl;
111 TString fullListName(".");
113 fullListName +=fileList;
114 sFileList.open(fileList.Data());
117 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
118 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
120 AliMUONAlignment* alig = new AliMUONAlignment();
121 alig->InitGlobalParameters(parameters);
123 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
124 transform->LoadGeometryData();
125 alig->SetGeometryTransformer(transform);
127 // Do alignment with magnetic field off
128 alig->SetBFieldOn(kFALSE);
130 // Set tracking station to use
131 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
133 // Fix parameters or add constraints here
134 for (Int_t iSt=0; iSt<5; iSt++)
135 if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
137 // Left and right sides of the detector are independent, one can choose to align
139 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
140 alig->FixHalfSpectrometer(bStOnOff,bSpecLROnOff);
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);
150 Int_t lMaxFile = 1000;
153 bool bKeepLoop = kTRUE;
157 while(bKeepLoop && iFile<lMaxFile){
160 sFileList.getline(cFileName,100);
161 if (sFileList.eof()) bKeepLoop = kFALSE;
164 sprintf(cFileName,esdFileName.Data());
167 if (!strstr(cFileName,"AliESDs.root")) continue;
168 cout << "Using file: " << cFileName << endl;
171 TFile* esdFile = TFile::Open(cFileName); // open the file
172 if (!esdFile || !esdFile->IsOpen()) {
173 cout << "opening ESD file " << cFileName << "failed" << endl;
176 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
178 cout << "no ESD tree found" << endl;
182 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
183 esdEvent->ReadFromTree(esdTree);
185 Int_t nevents = esdTree->GetEntries();
186 cout << "... with " << nevents << endl;
187 for(Int_t event = 0; event < nevents; event++) {
188 if (iEvent >= nEvents){
194 if (esdTree->GetEvent(event) <= 0) {
195 cout << "fails to read ESD object for event " << event << endl;
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();
205 fInvBenMom->Fill(invBenMom);
206 fBenMom->Fill(1./invBenMom);
207 if (TMath::Abs(invBenMom)<=1.04) {
208 AliMUONTrack track(*esdTrack);
209 alig->ProcessTrack(&track);
210 alig->LocalFit(iTrackOk++,trackParams,0);
217 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
219 alig->GlobalFit(parameters,errors,pulls);
221 cout << "Done with GlobalFit " << endl;
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};
236 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
237 Int_t idOffset = 0; // 400
238 Int_t lSDetElemCh = 0;
239 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
241 DEid[iDE] = idOffset+100;
244 for(Int_t iCh=0; iCh<9; iCh++){
245 lSDetElemCh += lNDetElemCh[iCh];
246 if (iDE>=lSDetElemCh) {
248 DEid[iDE] -= lNDetElemCh[iCh];
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);
261 cout << "Let's create graphs ... " << endl;
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);
268 cout << "... graphs created, open file ... " << endl;
270 TFile *hFile = new TFile("measShifts.root","RECREATE");
272 cout << "... file opened ... " << endl;
274 gMSDEx->Write("gMSDEx");
275 gMSDEy->Write("gMSDEy");
276 gMSDExt->Write("gMSDExt");
277 gMSDEyt->Write("gMSDEyt");
282 cout << "... and closed!" << endl;
284 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
285 newTransform->WriteTransformations("transform2ReAlign.dat");
287 // Generate realigned data in local cdb
288 const TClonesArray* array = newTransform->GetMisAlignmentData();
291 AliCDBManager* cdbManager = AliCDBManager::Instance();
292 cdbManager->SetDefaultStorage("local://ReAlignCDB");
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);
298 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);