+++ /dev/null
-/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
-
-/* $Id$ */
-
-/// \ingroup macros
-/// \file MUONAlignment.C
-/// \brief Macro for MUON alignment using physics tracks.
-///
-/// The macro uses the AliMUONAlignment class to calculate the alignment parameters.
-/// An array for the alignment parameters is created and can be filled with
-/// initial values that will be used as starting values by the alignment
-/// algorithm.
-///
-/// By default the macro run over galice.root in the working directory. If a file list
-/// of galice.root is provided as third argument the macro will run over all files.
-/// The macro loop over the files, events and tracks. For each track
-/// AliMUONAlignment::ProcessTrack(AliMUONTrack * track) and then
-/// AliMUONAlignment::LocalFit(Int_t iTrack, Double_t *lTrackParam, Int_t
-/// lSingleFit) are called. After all tracks have been procesed and fitted
-/// AliMUONAlignment::GlobalFit(Double_t *parameters,Double_t *errors,Double_t *pulls)
-/// is called. The array parameters contains the obatained misalignement parameters.
-/// A realigned geometry is generated in a local CDB.
-///
-/// \author: B. Becker and J. Castillo
-
-#if !defined(__CINT__) || defined(__MAKECINT__)
-
-#include "AliMUONAlignment.h"
-#include "AliMUONTrack.h"
-#include "AliMUONRecoParam.h"
-#include "AliMUONTrackParam.h"
-#include "AliMUONGeometryTransformer.h"
-#include "AliMUONESDInterface.h"
-#include "AliMUONCDB.h"
-
-#include "AliESDEvent.h"
-#include "AliESDMuonTrack.h"
-#include "AliCDBManager.h"
-#include "AliCDBMetaData.h"
-#include "AliCDBId.h"
-#include "AliGeomManager.h"
-
-#include <TString.h>
-#include <TError.h>
-#include <TH1.h>
-#include <TGraphErrors.h>
-#include <TFile.h>
-#include <TTree.h>
-#include <TClonesArray.h>
-#include <Riostream.h>
-
-#include <fstream>
-
-#endif
-
-void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
-{
-
- // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
- if ( ! AliGeomManager::GetGeometry() ) {
- AliGeomManager::LoadGeometry(geoFilename);
- if (! AliGeomManager::GetGeometry() ) {
- Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
- return;
- }
- }
-
- // load necessary data from OCDB
- AliCDBManager* cdbManager = AliCDBManager::Instance();
- cdbManager->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
- cdbManager->SetRun(0);
- if (!AliMUONCDB::LoadField()) return;
- AliMUONRecoParam* recoParam = AliMUONCDB::LoadRecoParam();
- if (!recoParam) return;
-
- // reset tracker for restoring initial track parameters at cluster
- AliMUONESDInterface::ResetTracker(recoParam);
-
- Double_t parameters[4*156];
- Double_t errors[4*156];
- Double_t pulls[4*156];
- for(Int_t k=0;k<4*156;k++) {
- parameters[k]=0.;
- errors[k]=0.;
- pulls[k]=0.;
- }
-
- Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
-
- // Set initial values here, good guess may help convergence
- // St 1
- // Int_t iPar = 0;
- // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
-
- bool bLoop = kFALSE;
- ifstream sFileList;
- if (fileList.Contains(".list")) {
- cout << "Reading file list: " << fileList.Data() << endl;
- bLoop = kTRUE;
-
- TString fullListName(".");
- fullListName +="/";
- fullListName +=fileList;
- sFileList.open(fileList.Data());
- }
-
- TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
- TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
-
- AliMUONAlignment* alig = new AliMUONAlignment();
- alig->InitGlobalParameters(parameters);
-
- AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
- transform->LoadGeometryData();
- alig->SetGeometryTransformer(transform);
-
- // Do alignment with magnetic field off
- alig->SetBFieldOn(kFALSE);
-
- // Set tracking station to use
- Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
- Bool_t bChOnOff[10] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
-
- // Set degrees of freedom to align (see AliMUONAlignment)
- alig->AllowVariations(bChOnOff);
-
- // Fix parameters or add constraints here
-// for (Int_t iSt=0; iSt<5; iSt++)
-// if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
- for (Int_t iCh=0; iCh<10; iCh++)
- if (!bChOnOff[iCh]) alig->FixChamber(iCh+1);
-
- // Left and right sides of the detector are independent, one can choose to align
- // only one side
- Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
- alig->FixHalfSpectrometer(bChOnOff,bSpecLROnOff);
-
- alig->SetChOnOff(bChOnOff);
- alig->SetSpecLROnOff(bChOnOff);
-
- // Here we can fix some detection elements
- alig->FixDetElem(908);
- alig->FixDetElem(1020);
-
- // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
- Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
- Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
- // alig->AddConstraints(bChOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
-
-
- char cFileName[100];
-
- Int_t lMaxFile = 1000;
- Int_t iFile = 0;
- Int_t iEvent = 0;
- bool bKeepLoop = kTRUE;
- Int_t iTrackTot=0;
- Int_t iTrackOk=0;
-
- while(bKeepLoop && iFile<lMaxFile){
- iFile++;
- if (bLoop) {
- sFileList.getline(cFileName,100);
- if (sFileList.eof()) bKeepLoop = kFALSE;
- }
- else {
- sprintf(cFileName,esdFileName.Data());
- bKeepLoop = kFALSE;
- }
- if (!strstr(cFileName,"AliESDs")) continue;
- cout << "Using file: " << cFileName << endl;
-
- // load ESD event
- TFile* esdFile = TFile::Open(cFileName); // open the file
- if (!esdFile || !esdFile->IsOpen()) {
- cout << "opening ESD file " << cFileName << "failed" << endl;
- continue;
- }
- TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
- if (!esdTree) {
- cout << "no ESD tree found" << endl;
- esdFile->Close();
- continue;
- }
- AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
- esdEvent->ReadFromTree(esdTree);
-
- Int_t nevents = esdTree->GetEntries();
- cout << "... with " << nevents << endl;
- for(Int_t event = 0; event < nevents; event++) {
- if (iEvent >= nEvents){
- bKeepLoop = kFALSE;
- break;
- }
- iEvent++;
-
- if (esdTree->GetEvent(event) <= 0) {
- cout << "fails to read ESD object for event " << event << endl;
- continue;
- }
-
- Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
- if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
- for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
- AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
- if (!esdTrack->ContainTrackerData()) continue;
- Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
- fInvBenMom->Fill(invBenMom);
- fBenMom->Fill(1./invBenMom);
- if (TMath::Abs(invBenMom)<=1.04) {
- AliMUONTrack track;
- AliMUONESDInterface::ESDToMUON(*esdTrack, track);
- alig->ProcessTrack(&track);
- alig->LocalFit(iTrackOk++,trackParams,0);
- }
- iTrackTot++;
- }
- }
- delete esdEvent;
- esdFile->Close();
- cout << "Processed " << iTrackTot << " Tracks so far." << endl;
- }
- alig->GlobalFit(parameters,errors,pulls);
-
- cout << "Done with GlobalFit " << endl;
-
- // Store results
- Double_t DEid[156] = {0};
- Double_t MSDEx[156] = {0};
- Double_t MSDEy[156] = {0};
- Double_t MSDEz[156] = {0};
- Double_t MSDEp[156] = {0};
- Double_t DEidErr[156] = {0};
- Double_t MSDExErr[156] = {0};
- Double_t MSDEyErr[156] = {0};
- Double_t MSDEzErr[156] = {0};
- Double_t MSDEpErr[156] = {0};
- Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
- Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
- // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
- Int_t idOffset = 0; // 400
- Int_t lSDetElemCh = 0;
- for(Int_t iDE=0; iDE<lNDetElem; iDE++){
- DEidErr[iDE] = 0.;
- DEid[iDE] = idOffset+100;
- DEid[iDE] += iDE;
- lSDetElemCh = 0;
- for(Int_t iCh=0; iCh<9; iCh++){
- lSDetElemCh += lNDetElemCh[iCh];
- if (iDE>=lSDetElemCh) {
- DEid[iDE] += 100;
- DEid[iDE] -= lNDetElemCh[iCh];
- }
- }
- MSDEx[iDE]=parameters[4*iDE+0];
- MSDEy[iDE]=parameters[4*iDE+1];
- MSDEz[iDE]=parameters[4*iDE+3];
- MSDEp[iDE]=parameters[4*iDE+2];
- MSDExErr[iDE]=(Double_t)alig->GetParError(4*iDE+0);
- MSDEyErr[iDE]=(Double_t)alig->GetParError(4*iDE+1);
- MSDEzErr[iDE]=(Double_t)alig->GetParError(4*iDE+3);
- MSDEpErr[iDE]=(Double_t)alig->GetParError(4*iDE+2);
- }
-
- cout << "Let's create graphs ... " << endl;
-
- TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
- TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
- TGraphErrors *gMSDEz = new TGraphErrors(lNDetElem,DEid,MSDEz,DEidErr,MSDEzErr);
- TGraphErrors *gMSDEp = new TGraphErrors(lNDetElem,DEid,MSDEp,DEidErr,MSDEpErr);
-
- cout << "... graphs created, open file ... " << endl;
-
- TFile *hFile = new TFile("measShifts.root","RECREATE");
-
- cout << "... file opened ... " << endl;
-
- gMSDEx->Write("gMSDEx");
- gMSDEy->Write("gMSDEy");
- gMSDEz->Write("gMSDEz");
- gMSDEp->Write("gMSDEp");
- fInvBenMom->Write();
- fBenMom->Write();
- hFile->Close();
-
- cout << "... and closed!" << endl;
- // Re Align
- AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
- newTransform->WriteTransformations("transform2ReAlign.dat");
-
- // Generate realigned data in local cdb
- const TClonesArray* array = newTransform->GetMisAlignmentData();
-
- // 100 mum residual resolution for chamber misalignments?
- alig->SetAlignmentResolution(array,-1,0.01,0.01,0.004,0.003);
-
- cdbManager->SetSpecificStorage("MUON/Align/Data","local://ReAlignCDB");
-
- AliCDBMetaData* cdbData = new AliCDBMetaData();
- cdbData->SetResponsible("Dimuon Offline project");
- cdbData->SetComment("MUON alignment objects with residual misalignment");
- AliCDBId id("MUON/Align/Data", 0, AliCDBRunRange::Infinity());
- cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);
-
-}
-