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a493c9bc | 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 VZERO. 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 "AliVZEROMisAligner.h" | |
28 | #include "AliGeomManager.h" | |
29 | #include "AliMathBase.h" | |
30 | #include "TClonesArray.h" | |
31 | #include "TRandom.h" | |
32 | #include "AliAlignObjParams.h" | |
33 | #include "AliLog.h" | |
34 | ||
35 | ClassImp(AliVZEROMisAligner) | |
36 | ||
37 | //_______________________________________________________________________________________ | |
38 | AliVZEROMisAligner::AliVZEROMisAligner() : AliMisAligner() | |
39 | { | |
40 | // | |
41 | // dummy constructor | |
42 | // | |
43 | } | |
44 | ||
45 | //_______________________________________________________________________________________ | |
46 | TClonesArray* AliVZEROMisAligner::MakeAlObjsArray() { | |
47 | // builds and returns the array of alignment objects | |
48 | // according to the spcified misalignment scenario | |
49 | // ("ideal", "residual" or "full"). | |
50 | // | |
51 | TClonesArray *array = new TClonesArray("AliAlignObjParams",2); | |
52 | TClonesArray &alobj = *array; | |
53 | ||
54 | Double_t dx, dy, dz, dpsi, dtheta, dphi; | |
55 | gRandom->SetSeed(4321); | |
56 | Double_t sigmatr; // max shift in cm | |
57 | Double_t sigmarot; // max rot in degrees | |
58 | ||
59 | TString v0alignable[2]={"VZERO/V0C", "VZERO/V0A"}; | |
60 | ||
61 | Int_t iIndex=0; // VZERO is not indexed | |
62 | AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer; | |
63 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex); | |
64 | ||
65 | if(TString(GetMisalType())=="ideal") | |
66 | { | |
67 | ||
68 | for(Int_t ii=0; ii<2; ii++) | |
69 | new(alobj[ii]) AliAlignObjParams(v0alignable[ii].Data(), volid, 0., 0., 0., 0., 0., 0., kTRUE); | |
70 | ||
71 | }else if(TString(GetMisalType())=="residual" || TString(GetMisalType())=="full"){ | |
72 | ||
73 | if(!AliGeomManager::GetGeometry()) | |
74 | { | |
75 | AliError("No geometry loaded into AliGeomManager! Returning null pointer!"); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | sigmatr = 0.1; | |
80 | sigmarot = 0.5; | |
81 | ||
82 | for(Int_t ii=0; ii<2; ii++) | |
83 | { | |
84 | dx = AliMathBase::TruncatedGaus(0.,sigmatr, 3*sigmatr); | |
85 | dy = AliMathBase::TruncatedGaus(0.,sigmatr, 3*sigmatr); | |
86 | dz = AliMathBase::TruncatedGaus(0.,sigmatr, 3*sigmatr); | |
87 | dpsi = AliMathBase::TruncatedGaus(0.,sigmarot, 3*sigmarot); | |
88 | dtheta = AliMathBase::TruncatedGaus(0.,sigmarot, 3*sigmarot); | |
89 | dphi = AliMathBase::TruncatedGaus(0.,sigmarot, 3*sigmarot); | |
90 | new(alobj[ii]) AliAlignObjParams(v0alignable[ii].Data(), volid, dx, dy, dz, dpsi, dtheta, dphi, kFALSE); | |
91 | } | |
92 | ||
93 | }else{ | |
94 | AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType())); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | return array; | |
99 | } | |
100 | ||
101 | //_______________________________________________________________________________________ | |
102 | AliCDBMetaData* AliVZEROMisAligner::GetCDBMetaData() const { | |
103 | // Returns the comment and responsible for the | |
104 | // AliCDBMetaData to be associated with the OCDB entry | |
105 | // containing the VZERO array of misalignment objects | |
106 | // | |
107 | AliCDBMetaData* md = new AliCDBMetaData(); | |
108 | md->SetResponsible("Brigitte Cheynis"); | |
109 | ||
110 | if(TString(GetMisalType())=="ideal") | |
111 | md->SetComment("Alignment objects for VZERO ideal misalignment"); | |
112 | if(TString(GetMisalType())=="residual") | |
113 | md->SetComment("Alignment objects for VZERO residual misalignment"); | |
114 | if(TString(GetMisalType())=="full") | |
115 | md->SetComment("Alignment objects for VZERO full misalignment"); | |
116 | ||
117 | return md; | |
118 | } |