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1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
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11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
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14 **************************************************************************/
15
16/* $Id$ */
17
18/// \ingroup macros
19/// \file MUONCheckMisAligner.C
20/// \brief This macro performs the misalignment on an existing muon arm geometry
21///
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.
25///
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
40/// of microns)
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
46///
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
51/// as well.
52///
53/// \author:Bruce Becker
54
55#if !defined(__CINT__) || defined(__MAKECINT__)
56
57#include "AliMUONGeometryTransformer.h"
58#include "AliMUONGeometryMisAligner.h"
59
60#include "AliGeomManager.h"
61#include "AliCDBManager.h"
62#include "AliCDBMetaData.h"
63#include "AliCDBId.h"
64
65#include <TGeoManager.h>
66#include <TClonesArray.h>
67
68#endif
69
70void 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")
75{
76
77 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
78 transform->LoadGeometryData(geomFileName.Data());
79
80 AliMUONGeometryMisAligner misAligner(xcartmisaligm,xcartmisaligw,
81 ycartmisaligm,ycartmisaligw,
82 angmisaligm,angmisaligw);
83
84 // Generate mis alignment data
85
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
91
92 AliMUONGeometryTransformer *newTransform = misAligner.MisAlign(transform,true);
93 newTransform->WriteTransformations("transform2.dat");
94 newTransform->WriteMisAlignmentData("misalign.root");
95
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");
101
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
108
109 // Generate misaligned data in local cdb
110 const TClonesArray* array = newTransform->GetMisAlignmentData();
111
112 // 100 mum residual resolution for chamber misalignments?
113 misAligner.SetAlignmentResolution(array,-1,0.01,0.01,xcartmisaligw,ycartmisaligw);
114
115 TString sLocCDB("local://");
116 sLocCDB += nameCDB;
117 // CDB manager
118 AliCDBManager* cdbManager = AliCDBManager::Instance();
119 cdbManager->SetSpecificStorage("MUON/Align/Data",sLocCDB.Data());
120
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);
126
127 // To run simulation with misaligned geometry, you have to set
128 // the Align option in Config.C:
129 // MUON->SetAlign("transform2.dat");
130}
131
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134