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 // Macro for MUON alignment using physics tracks. The macro uses AliMUONAlignment
20 // class to calculate the alignment parameters.
21 // An array for the alignment parameters is created and can be filled with
22 // initial values that will be used as starting values by the alignment
24 // Ny default the macro run over galice.root in the working directory. If a file list
25 // of galice.root is provided as third argument the macro will run over all files.
26 // The macro loop over the files, events and tracks. For each track
27 // AliMUONAlignment::ProcessTrack(AliMUONTrack * track) and then
28 // AliMUONAlignment::LocalFit(Int_t iTrack, Double_t *lTrackParam, Int_t
29 // lSingleFit) are called. After all tracks have been procesed and fitted
30 // AliMUONAlignment::GlobalFit(Double_t *parameters,Double_t *errors,Double_t *pulls)
31 // is called. The array parameters contains the obatained misalignement parameters.
32 // A realigned geometry is generated in a local CDB.
34 // Authors: B. Becker and J. Castillo
37 #if !defined(__CINT__) || defined(__MAKECINT__)
39 #include "AliMUONAlignment.h"
40 #include "AliMUONTrack.h"
41 #include "AliMUONTrackExtrap.h"
42 #include "AliMUONTrackParam.h"
43 #include "AliMUONGeometryTransformer.h"
44 #include "AliESDEvent.h"
45 #include "AliESDMuonTrack.h"
47 #include "AliMagFMaps.h"
48 #include "AliTracker.h"
49 #include "AliCDBManager.h"
50 #include "AliCDBMetaData.h"
52 #include "AliGeomManager.h"
57 #include <TGraphErrors.h>
60 #include <TClonesArray.h>
61 #include <Riostream.h>
67 void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
70 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
71 if ( ! AliGeomManager::GetGeometry() ) {
72 AliGeomManager::LoadGeometry(geoFilename);
73 if (! AliGeomManager::GetGeometry() ) {
74 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
80 // waiting for mag field in CDB
81 printf("Loading field map...\n");
82 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG);
83 AliTracker::SetFieldMap(field, kFALSE);
84 // set the magnetic field for track extrapolations
85 AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap());
87 Double_t parameters[3*156];
88 Double_t errors[3*156];
89 Double_t pulls[3*156];
90 for(Int_t k=0;k<3*156;k++) {
96 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
98 // Set initial values here, good guess may help convergence
101 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
105 if (fileList.Contains(".list")) {
106 cout << "Reading file list: " << fileList.Data() << endl;
109 TString fullListName(".");
111 fullListName +=fileList;
112 sFileList.open(fileList.Data());
115 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
116 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
118 AliMUONAlignment* alig = new AliMUONAlignment();
119 alig->InitGlobalParameters(parameters);
121 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
122 transform->LoadGeometryData();
123 alig->SetGeometryTransformer(transform);
125 // Do alignment with magnetic field off
126 alig->SetBFieldOn(kFALSE);
128 // Set tracking station to use
129 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
131 // Fix parameters or add constraints here
132 for (Int_t iSt=0; iSt<5; iSt++)
133 if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
135 // Left and right sides of the detector are independent, one can choose to align
137 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
138 alig->FixHalfSpectrometer(bStOnOff,bSpecLROnOff);
140 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
141 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
142 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
143 alig->AddConstraints(bStOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
148 Int_t lMaxFile = 1000;
151 bool bKeepLoop = kTRUE;
155 while(bKeepLoop && iFile<lMaxFile){
158 sFileList.getline(cFileName,100);
159 if (sFileList.eof()) bKeepLoop = kFALSE;
162 sprintf(cFileName,esdFileName.Data());
165 if (!strstr(cFileName,"AliESDs.root")) continue;
166 cout << "Using file: " << cFileName << endl;
169 TFile* esdFile = TFile::Open(cFileName); // open the file
170 if (!esdFile || !esdFile->IsOpen()) {
171 cout << "opening ESD file " << cFileName << "failed" << endl;
174 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
176 cout << "no ESD tree found" << endl;
180 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
181 esdEvent->ReadFromTree(esdTree);
183 Int_t nevents = esdTree->GetEntries();
184 cout << "... with " << nevents << endl;
185 for(Int_t event = 0; event < nevents; event++) {
186 if (iEvent >= nEvents){
192 if (esdTree->GetEvent(event) <= 0) {
193 cout << "fails to read ESD object for event " << event << endl;
197 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
198 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
199 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
200 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
201 if (!esdTrack->ClustersStored()) continue;
202 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
203 fInvBenMom->Fill(invBenMom);
204 fBenMom->Fill(1./invBenMom);
205 if (TMath::Abs(invBenMom)<=1.04) {
206 AliMUONTrack track(*esdTrack);
207 alig->ProcessTrack(&track);
208 alig->LocalFit(iTrackOk++,trackParams,0);
215 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
217 alig->GlobalFit(parameters,errors,pulls);
219 cout << "Done with GlobalFit " << endl;
222 Double_t DEid[156] = {0};
223 Double_t MSDEx[156] = {0};
224 Double_t MSDEy[156] = {0};
225 Double_t MSDExt[156] = {0};
226 Double_t MSDEyt[156] = {0};
227 Double_t DEidErr[156] = {0};
228 Double_t MSDExErr[156] = {0};
229 Double_t MSDEyErr[156] = {0};
230 Double_t MSDExtErr[156] = {0};
231 Double_t MSDEytErr[156] = {0};
232 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
233 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
234 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
235 Int_t idOffset = 0; // 400
236 Int_t lSDetElemCh = 0;
237 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
239 DEid[iDE] = idOffset+100;
242 for(Int_t iCh=0; iCh<9; iCh++){
243 lSDetElemCh += lNDetElemCh[iCh];
244 if (iDE>=lSDetElemCh) {
246 DEid[iDE] -= lNDetElemCh[iCh];
249 MSDEx[iDE]=parameters[3*iDE+0];
250 MSDEy[iDE]=parameters[3*iDE+1];
251 MSDExt[iDE]=parameters[3*iDE+2];
252 MSDEyt[iDE]=parameters[3*iDE+2];
253 MSDExErr[iDE]=(Double_t)alig->GetParError(3*iDE+0);
254 MSDEyErr[iDE]=(Double_t)alig->GetParError(3*iDE+1);
255 MSDExtErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
256 MSDEytErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
259 cout << "Let's create graphs ... " << endl;
261 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
262 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
263 TGraphErrors *gMSDExt = new TGraphErrors(lNDetElem,DEid,MSDExt,DEidErr,MSDExtErr);
264 TGraphErrors *gMSDEyt = new TGraphErrors(lNDetElem,DEid,MSDEyt,DEidErr,MSDEytErr);
266 cout << "... graphs created, open file ... " << endl;
268 TFile *hFile = new TFile("measShifts.root","RECREATE");
270 cout << "... file opened ... " << endl;
272 gMSDEx->Write("gMSDEx");
273 gMSDEy->Write("gMSDEy");
274 gMSDExt->Write("gMSDExt");
275 gMSDEyt->Write("gMSDEyt");
280 cout << "... and closed!" << endl;
282 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
283 newTransform->WriteTransformations("transform2ReAlign.dat");
285 // Generate realigned data in local cdb
286 const TClonesArray* array = newTransform->GetMisAlignmentData();
289 AliCDBManager* cdbManager = AliCDBManager::Instance();
290 cdbManager->SetDefaultStorage("local://ReAlignCDB");
292 AliCDBMetaData* cdbData = new AliCDBMetaData();
293 cdbData->SetResponsible("Dimuon Offline project");
294 cdbData->SetComment("MUON alignment objects with residual misalignment");
295 AliCDBId id("MUON/Align/Data", 0, 0);
296 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);