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19 /// \file MUONCheckMisAligner.C
20 /// \brief This macro performs the misalignment on an existing muon arm geometry
22 /// This macro performs the misalignment on an existing muon arm geometry
23 /// based on the standard definition of the detector elements in
24 /// the AliMUONGeometryTransformer class.
26 /// It uses AliMUONGeometryMisAligner :
27 /// - Creates a new AliMUONGeometryTransformer and AliMUONGeometryMisAligner
28 /// - Loads the geometry from the specified geometry file (default is geometry.root)
29 /// - Creates a second AliMUONGeometryTransformer by misaligning the existing
30 /// one using AliMUONGeometryMisAligner::MisAlign
31 /// - User has to specify the magnitude of the alignments, in the Cartesian
32 /// co-ordiantes (which are used to apply translation misalignments) and in the
33 /// spherical co-ordinates (which are used to apply angular displacements)
34 /// - User can also set misalignment ranges by hand using the methods :
35 /// SetMaxCartMisAlig, SetMaxAngMisAlig, SetXYAngMisAligFactor
36 /// (last method takes account of the fact that the misalingment is greatest in
37 /// the XY plane, since the detection elements are fixed to a support structure
38 /// in this plane. Misalignments in the XZ and YZ plane will be very small
39 /// compared to those in the XY plane, which are small already - of the order
41 /// - Default behavior generates a "residual" misalignment using gaussian
42 /// distributions. Uniform distributions can still be used, see
43 /// AliMUONGeometryMisAligner.
44 /// - User can also generate module misalignments using SetModuleCartMisAlig
45 /// and SetModuleAngMisAlig
47 /// Note: If the detection elements are allowed to be misaligned in all
48 /// directions, this has consequences for the alignment algorithm, which
49 /// needs to know the number of free parameters. Eric only allowed 3 :
50 /// x,y,theta_xy, but in principle z and the other two angles are alignable
53 /// \author:Bruce Becker
55 #if !defined(__CINT__) || defined(__MAKECINT__)
57 #include "AliMUONGeometryTransformer.h"
58 #include "AliMUONGeometryMisAligner.h"
60 #include "AliGeomManager.h"
61 #include "AliCDBManager.h"
62 #include "AliCDBMetaData.h"
65 #include <TGeoManager.h>
66 #include <TClonesArray.h>
70 void MUONCheckMisAligner(Double_t xcartmisaligm = 0.0, Double_t xcartmisaligw = 0.004,
71 Double_t ycartmisaligm = 0.0, Double_t ycartmisaligw = 0.003,
72 Double_t angmisaligm = 0.0, Double_t angmisaligw = 0.0023,
73 TString nameCDB = "ResMisAlignCDB",
74 const TString& geomFileName = "geometry.root")
77 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
78 transform->LoadGeometryData(geomFileName.Data());
80 AliMUONGeometryMisAligner misAligner(xcartmisaligm,xcartmisaligw,
81 ycartmisaligm,ycartmisaligw,
82 angmisaligm,angmisaligw);
84 // Generate mis alignment data
86 // Uncomment lines below if you would like to generate module misalignments
87 // misAligner.SetModuleCartMisAlig(0.0,0.1,0.0,0.1,0.0,0.1); // Full
88 // misAligner.SetModuleAngMisAlig(0.0,0.02,0.0,0.04,0.0,0.02); // Full
89 // misAligner.SetModuleCartMisAlig(0.0,0.003,0.0,0.003,0.0,0.003); // Res
90 // misAligner.SetModuleAngMisAlig(0.0,0.0006,0.0,0.001,0.0,0.0005); // Res
92 AliMUONGeometryTransformer *newTransform = misAligner.MisAlign(transform,true);
93 newTransform->WriteTransformations("transform2.dat");
94 newTransform->WriteMisAlignmentData("misalign.root");
96 // Apply misAlignment via AliRoot framework
97 AliGeomManager::ApplyAlignObjsToGeom(
98 *const_cast<TClonesArray*>(newTransform->GetMisAlignmentData()));
99 // Save new geometry file
100 gGeoManager->Export("geometry2.root");
102 // Extract new transformations
103 AliMUONGeometryTransformer* transform3 = new AliMUONGeometryTransformer();
104 gGeoManager->UnlockGeometry();
105 transform3->LoadGeometryData("geometry2.root");
106 transform3->WriteTransformations("transform3.dat");
107 // Check that transform3.dat is equal to transform2.dat
109 // Generate misaligned data in local cdb
110 const TClonesArray* array = newTransform->GetMisAlignmentData();
112 // 100 mum residual resolution for chamber misalignments?
113 misAligner.SetAlignmentResolution(array,-1,0.01,0.01,xcartmisaligw,ycartmisaligw);
115 TString sLocCDB("local://");
118 AliCDBManager* cdbManager = AliCDBManager::Instance();
119 cdbManager->SetSpecificStorage("MUON/Align/Data",sLocCDB.Data());
121 AliCDBMetaData* cdbData = new AliCDBMetaData();
122 cdbData->SetResponsible("Dimuon Offline project");
123 cdbData->SetComment("MUON alignment objects with residual misalignment");
124 AliCDBId id("MUON/Align/Data", 0, AliCDBRunRange::Infinity());
125 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);
127 // To run simulation with misaligned geometry, you have to set
128 // the Align option in Config.C:
129 // MUON->SetAlign("transform2.dat");