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 "AliMUONESDInterface.h"
47 #include "AliMUONRecoParam.h"
49 #include "AliESDEvent.h"
50 #include "AliESDMuonTrack.h"
51 #include "AliMagFMaps.h"
52 #include "AliTracker.h"
53 #include "AliCDBManager.h"
54 #include "AliCDBMetaData.h"
56 #include "AliGeomManager.h"
61 #include <TGraphErrors.h>
64 #include <TClonesArray.h>
65 #include <Riostream.h>
71 void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
74 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
75 if ( ! AliGeomManager::GetGeometry() ) {
76 AliGeomManager::LoadGeometry(geoFilename);
77 if (! AliGeomManager::GetGeometry() ) {
78 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
84 // waiting for mag field in CDB
85 printf("Loading field map...\n");
86 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG);
87 AliTracker::SetFieldMap(field, kFALSE);
88 // set the magnetic field for track extrapolations
89 AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap());
91 Double_t parameters[3*156];
92 Double_t errors[3*156];
93 Double_t pulls[3*156];
94 for(Int_t k=0;k<3*156;k++) {
100 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
102 // Set initial values here, good guess may help convergence
105 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
109 if (fileList.Contains(".list")) {
110 cout << "Reading file list: " << fileList.Data() << endl;
113 TString fullListName(".");
115 fullListName +=fileList;
116 sFileList.open(fileList.Data());
119 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
120 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
122 AliMUONAlignment* alig = new AliMUONAlignment();
123 alig->InitGlobalParameters(parameters);
125 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
126 transform->LoadGeometryData();
127 alig->SetGeometryTransformer(transform);
129 // Do alignment with magnetic field off
130 alig->SetBFieldOn(kFALSE);
132 // Set tracking station to use
133 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
135 // Fix parameters or add constraints here
136 for (Int_t iSt=0; iSt<5; iSt++)
137 if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
139 // Left and right sides of the detector are independent, one can choose to align
141 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
142 alig->FixHalfSpectrometer(bStOnOff,bSpecLROnOff);
144 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
145 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
146 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
147 alig->AddConstraints(bStOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
152 Int_t lMaxFile = 1000;
155 bool bKeepLoop = kTRUE;
159 while(bKeepLoop && iFile<lMaxFile){
162 sFileList.getline(cFileName,100);
163 if (sFileList.eof()) bKeepLoop = kFALSE;
166 sprintf(cFileName,esdFileName.Data());
169 if (!strstr(cFileName,"AliESDs.root")) continue;
170 cout << "Using file: " << cFileName << endl;
173 TFile* esdFile = TFile::Open(cFileName); // open the file
174 if (!esdFile || !esdFile->IsOpen()) {
175 cout << "opening ESD file " << cFileName << "failed" << endl;
178 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
180 cout << "no ESD tree found" << endl;
184 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
185 esdEvent->ReadFromTree(esdTree);
187 Int_t nevents = esdTree->GetEntries();
188 cout << "... with " << nevents << endl;
189 for(Int_t event = 0; event < nevents; event++) {
190 if (iEvent >= nEvents){
196 if (esdTree->GetEvent(event) <= 0) {
197 cout << "fails to read ESD object for event " << event << endl;
201 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
202 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
203 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
204 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
205 if (!esdTrack->ClustersStored()) continue;
206 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
207 fInvBenMom->Fill(invBenMom);
208 fBenMom->Fill(1./invBenMom);
209 if (TMath::Abs(invBenMom)<=1.04) {
211 AliMUONESDInterface::ESDToMUON(AliMUONRecoParam::GetLowFluxParam(),*esdTrack, track);
212 alig->ProcessTrack(&track);
213 alig->LocalFit(iTrackOk++,trackParams,0);
220 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
222 alig->GlobalFit(parameters,errors,pulls);
224 cout << "Done with GlobalFit " << endl;
227 Double_t DEid[156] = {0};
228 Double_t MSDEx[156] = {0};
229 Double_t MSDEy[156] = {0};
230 Double_t MSDExt[156] = {0};
231 Double_t MSDEyt[156] = {0};
232 Double_t DEidErr[156] = {0};
233 Double_t MSDExErr[156] = {0};
234 Double_t MSDEyErr[156] = {0};
235 Double_t MSDExtErr[156] = {0};
236 Double_t MSDEytErr[156] = {0};
237 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
238 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
239 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
240 Int_t idOffset = 0; // 400
241 Int_t lSDetElemCh = 0;
242 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
244 DEid[iDE] = idOffset+100;
247 for(Int_t iCh=0; iCh<9; iCh++){
248 lSDetElemCh += lNDetElemCh[iCh];
249 if (iDE>=lSDetElemCh) {
251 DEid[iDE] -= lNDetElemCh[iCh];
254 MSDEx[iDE]=parameters[3*iDE+0];
255 MSDEy[iDE]=parameters[3*iDE+1];
256 MSDExt[iDE]=parameters[3*iDE+2];
257 MSDEyt[iDE]=parameters[3*iDE+2];
258 MSDExErr[iDE]=(Double_t)alig->GetParError(3*iDE+0);
259 MSDEyErr[iDE]=(Double_t)alig->GetParError(3*iDE+1);
260 MSDExtErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
261 MSDEytErr[iDE]=(Double_t)alig->GetParError(3*iDE+2);
264 cout << "Let's create graphs ... " << endl;
266 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
267 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
268 TGraphErrors *gMSDExt = new TGraphErrors(lNDetElem,DEid,MSDExt,DEidErr,MSDExtErr);
269 TGraphErrors *gMSDEyt = new TGraphErrors(lNDetElem,DEid,MSDEyt,DEidErr,MSDEytErr);
271 cout << "... graphs created, open file ... " << endl;
273 TFile *hFile = new TFile("measShifts.root","RECREATE");
275 cout << "... file opened ... " << endl;
277 gMSDEx->Write("gMSDEx");
278 gMSDEy->Write("gMSDEy");
279 gMSDExt->Write("gMSDExt");
280 gMSDEyt->Write("gMSDEyt");
285 cout << "... and closed!" << endl;
287 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
288 newTransform->WriteTransformations("transform2ReAlign.dat");
290 // Generate realigned data in local cdb
291 const TClonesArray* array = newTransform->GetMisAlignmentData();
293 // 100 mum residual resolution for chamber misalignments?
294 alig->SetAlignmentResolution(array,-1,0.01,0.01,0.004,0.003);
297 AliCDBManager* cdbManager = AliCDBManager::Instance();
298 cdbManager->SetDefaultStorage("local://ReAlignCDB");
300 AliCDBMetaData* cdbData = new AliCDBMetaData();
301 cdbData->SetResponsible("Dimuon Offline project");
302 cdbData->SetComment("MUON alignment objects with residual misalignment");
303 AliCDBId id("MUON/Align/Data", 0, 0);
304 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);