1 /// \file MakeTPCResMisAlignment.C
2 /// \brief Create TClonesArray of residual misalignment objects for TPC
4 void MakeTPCResMisAlignment() {
6 const char* macroname = "MakeTPCResMisAlignment.C";
8 // Activate CDB storage and load geometry from CDB
9 AliCDBManager* cdb = AliCDBManager::Instance();
10 if(!cdb->IsDefaultStorageSet()) cdb->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
13 AliCDBStorage* storage;
15 if( TString(gSystem->Getenv("TOCDB")) == TString("kTRUE") ){
16 TString Storage = gSystem->Getenv("STORAGE");
17 if(!Storage.BeginsWith("local://") && !Storage.BeginsWith("alien://")) {
18 Error(macroname,"STORAGE variable set to %s is not valid. Exiting\n",Storage.Data());
21 storage = cdb->GetStorage(Storage.Data());
23 Error(macroname,"Unable to open storage %s\n",Storage.Data());
26 AliCDBPath path("GRP","Geometry","Data");
27 AliCDBEntry *entry = storage->Get(path.GetPath(),cdb->GetRun());
28 if(!entry) Fatal(macroname,"Could not get the specified CDB entry!");
30 TGeoManager* geom = (TGeoManager*) entry->GetObject();
31 AliGeomManager::SetGeometry(geom);
33 AliGeomManager::LoadGeometry(); //load geom from default CDB storage
36 TClonesArray *array = new TClonesArray("AliAlignObjParams",100);
37 TClonesArray &alobj = *array;
39 TRandom *rnd = new TRandom(4357);
40 Double_t dx, dy, dz, dpsi, dtheta, dphi;
44 // sigma translation = 0.1 mm
45 // sigma rotation = 0.1 mrad
47 Float_t sigmarot = 0.006;
48 for (Int_t iLayer = AliGeomManager::kTPC1; iLayer <= AliGeomManager::kTPC2; iLayer++) {
49 for (Int_t iModule = 0; iModule < AliGeomManager::LayerSize(iLayer); iModule++) {
51 dx = rnd->Gaus(0,sigmatr);
52 dy = rnd->Gaus(0,sigmatr);
53 dz = rnd->Gaus(0,sigmatr);
54 dpsi = rnd->Gaus(0,sigmarot);
55 dtheta = rnd->Gaus(0,sigmarot);
56 dphi = rnd->Gaus(0,sigmarot);
58 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iModule);
59 const char *symname = AliGeomManager::SymName(volid);
60 new(alobj[j]) AliAlignObjParams(symname, volid, dx, dy, dz, dpsi, dtheta, dphi, kFALSE);
65 if( TString(gSystem->Getenv("TOCDB")) != TString("kTRUE") ){
67 const char* filename = "TPCresidualMisalignment.root";
68 TFile f(filename,"RECREATE");
70 Error(macroname,"cannot open file for output\n");
73 Info(macroname,"Saving alignment objects to the file %s", filename);
75 f.WriteObject(array,"TPCAlignObjs","kSingleKey");
78 // save in CDB storage
79 AliCDBMetaData* md = new AliCDBMetaData();
80 md->SetResponsible("Marian Ivanov");
81 md->SetComment("Residual misalignment for TPC, sigmatr=0.01 and sigmarot=0.6 in the local RS");
82 md->SetAliRootVersion(gSystem->Getenv("ARVERSION"));
83 AliCDBId id("TPC/Align/Data",0,AliCDBRunRange::Infinity());
84 storage->Put(array,id,md);