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22c261d9 | 1 | /************************************************************************** |
2 | * Copyright(c) 2007-2010, 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 * | |
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 | **************************************************************************/ | |
15 | ||
16 | //======================================================================== | |
17 | // | |
18 | // This class generates misalignment for HMPID. In particular it defines | |
19 | // the misalignment in the three canonical scenarios: "ideal", "residual" | |
20 | // and "full". | |
21 | // It is meant to be run standalone or from the steering macro | |
22 | // $ALICE_ROOT/macros/MakeAlignmentObjs.C | |
23 | // looping on the detectors. | |
24 | // | |
25 | //======================================================================== | |
26 | ||
27 | #include "AliHMPIDMisAligner.h" | |
28 | #include "AliGeomManager.h" | |
29 | #include "TClonesArray.h" | |
30 | #include "TRandom.h" | |
31 | #include "TMath.h" | |
32 | #include "AliAlignObjMatrix.h" | |
33 | #include "AliLog.h" | |
34 | ||
35 | ClassImp(AliHMPIDMisAligner) | |
36 | ||
37 | //_______________________________________________________________________________________ | |
38 | AliHMPIDMisAligner::AliHMPIDMisAligner() : AliMisAligner() | |
39 | { | |
40 | // | |
41 | // dummy constructor | |
42 | // | |
43 | } | |
44 | ||
45 | //_______________________________________________________________________________________ | |
46 | TClonesArray* AliHMPIDMisAligner::MakeAlObjsArray() { | |
47 | // builds and returns the array of alignment objects | |
48 | // according to the spcified misalignment scenario | |
49 | // ("ideal", "residual" or "full"). | |
50 | // | |
51 | if(!AliGeomManager::GetGeometry()) | |
52 | { | |
53 | AliError("No geometry loaded into AliGeomManager! Returning null pointer!"); | |
54 | return 0; | |
55 | } | |
56 | ||
57 | TClonesArray *array = new TClonesArray("AliAlignObjMatrix",7); | |
58 | ||
59 | AliGeomManager::ELayerID idHMPID = AliGeomManager::kHMPID; | |
45f0e531 | 60 | Double_t sigmaTrans, sigmaRotPsi, sigmaRotTheta, sigmaRotPhi; |
22c261d9 | 61 | Double_t dX=0., dY=0., dZ=0., dPsi=0., dTheta=0., dPhi=0.; //displacements |
62 | ||
63 | // TRandom *pRnd = new TRandom(4357); | |
64 | gRandom->SetSeed(4357); | |
65 | ||
66 | if(TString(GetMisalType())=="ideal") | |
67 | { | |
68 | ||
69 | for (Int_t iCh = 0; iCh < 7; iCh++) { | |
70 | new((*array)[iCh]) AliAlignObjMatrix(AliGeomManager::SymName(idHMPID,iCh), | |
71 | AliGeomManager::LayerToVolUID(idHMPID,iCh),dX,dY,dZ,dPsi,dTheta,dPhi,kTRUE); | |
72 | } | |
73 | ||
74 | }else if( TString(GetMisalType())=="residual" || TString(GetMisalType())=="full"){ | |
75 | ||
45f0e531 | 76 | sigmaTrans=4.; // 4 cm |
77 | sigmaRotPsi = 0.2; // degrees | |
78 | sigmaRotTheta = 1.0; // degrees | |
79 | sigmaRotPhi = 0.5; // degrees | |
80 | ||
22c261d9 | 81 | for (Int_t iCh = 0; iCh < 7; iCh++) { |
45f0e531 | 82 | |
83 | /*dX = 2 - 2.1*gRandom->Uniform(); | |
84 | dY = 2 - 2.1*gRandom->Uniform(); | |
85 | dZ = 2.0 - 4*gRandom->Uniform(); | |
86 | dPsi = 0.1 - 0.2*gRandom->Uniform(); | |
87 | dTheta = 1 - 1.1*gRandom->Uniform(); | |
88 | dPhi = 0.25 - 0.5*gRandom->Uniform();*/ | |
89 | ||
90 | dX = sigmaTrans/2 - (sigmaTrans/2+0.1)*gRandom->Uniform(); // -0.1 <---> 2 cm | |
91 | dY = sigmaTrans/2 - (sigmaTrans/2+0.1)*gRandom->Uniform(); // -0.1 <---> 2 cm | |
92 | dZ = (gRandom->Uniform() - 0.5)*sigmaTrans; // -2.0 <---> 2 cm | |
93 | dPsi = (gRandom->Uniform() - 0.5)*sigmaRotPsi; // -0.1 <---> 0.1 degree | |
94 | dTheta = sigmaRotTheta - (sigmaRotTheta+0.1)*gRandom->Uniform(); // -0.1 <---> 1.0 degree | |
95 | dPhi = (gRandom->Uniform() - 0.5)*sigmaRotPhi; // -0.25 <---> 0.25 degree | |
96 | ||
97 | ||
22c261d9 | 98 | // dX = (pRnd->Uniform()-0.5)*sigmaTrans; dY = (pRnd->Uniform()-0.5)*sigmaTrans; dZ = (pRnd->Uniform()-0.5)*sigmaTrans; |
99 | // dPsi = (pRnd->Uniform()-0.5)*sigmaRot; dTheta = (pRnd->Uniform()-0.5)*sigmaRot; dPhi = (pRnd->Uniform()-0.5)*sigmaRot; | |
100 | new((*array)[iCh]) AliAlignObjMatrix(AliGeomManager::SymName(idHMPID,iCh), | |
101 | AliGeomManager::LayerToVolUID(idHMPID,iCh),dX,dY,dZ,dPsi,dTheta,dPhi,kTRUE); | |
102 | } | |
103 | }else{ | |
104 | AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType())); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | return array; | |
109 | } | |
110 | ||
111 | //_______________________________________________________________________________________ | |
112 | AliCDBMetaData* AliHMPIDMisAligner::GetCDBMetaData() const { | |
113 | // Returns the comment and responsible for the | |
114 | // AliCDBMetaData to be associated with the OCDB entry | |
115 | // containing the HMPID array of misalignment objects | |
116 | // | |
117 | AliCDBMetaData* md = new AliCDBMetaData(); | |
118 | md->SetResponsible("HMPID expert means nothing"); | |
119 | ||
120 | if(TString(GetMisalType())=="ideal") | |
121 | md->SetComment("Alignment objects for HMPID ideal misalignment"); | |
122 | if(TString(GetMisalType())=="residual") | |
123 | md->SetComment("Alignment objects for HMPID residual misalignment"); | |
124 | if(TString(GetMisalType())=="full") | |
125 | md->SetComment("Full misalignment objects for HMPID produced with sigmaTrans=1mm and sigmaRot=1mrad"); | |
126 | ||
127 | return md; | |
128 | } |