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abca08bd | 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 T0. 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 "AliT0MisAligner.h" | |
28 | #include "AliGeomManager.h" | |
29 | #include "TClonesArray.h" | |
30 | #include "TRandom.h" | |
31 | #include "AliAlignObjParams.h" | |
32 | #include "AliLog.h" | |
33 | ||
34 | ClassImp(AliT0MisAligner) | |
35 | ||
36 | //_______________________________________________________________________________________ | |
37 | AliT0MisAligner::AliT0MisAligner() : AliMisAligner() | |
38 | { | |
39 | // | |
40 | // dummy constructor | |
41 | // | |
42 | } | |
43 | ||
44 | //_______________________________________________________________________________________ | |
45 | TClonesArray* AliT0MisAligner::MakeAlObjsArray() { | |
46 | // builds and returns the array of alignment objects | |
47 | // according to the spcified misalignment scenario | |
48 | // ("ideal", "residual" or "full"). | |
49 | // | |
50 | TClonesArray *array = new TClonesArray("AliAlignObjParams",4); | |
51 | TClonesArray &alobj = *array; | |
52 | ||
53 | Double_t dx,dy,dz,dpsi,dtheta,dphi; | |
54 | gRandom->SetSeed(4321); | |
55 | Double_t sigmatr = 0.006; // sigma for shifts in cm | |
56 | Double_t sigmarot = 0.001; // sigma for tilts in degrees | |
57 | ||
58 | TString symName[2] = {"/ALIC_1/0STR_1","/ALIC_1/0STL_1"}; | |
59 | ||
60 | Int_t iIndex=0; | |
61 | AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer; | |
62 | UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex); | |
63 | ||
64 | if(TString(GetMisalType())=="ideal") | |
65 | { | |
66 | dx=0., dy=0., dz=0.; | |
67 | dpsi=0., dtheta=0., dphi=0.; | |
68 | for (Int_t imod=0; imod<2; imod++) | |
69 | { | |
70 | new(alobj[imod]) AliAlignObjParams(symName[imod].Data(), volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE); | |
71 | } | |
72 | }else if(TString(GetMisalType())=="residual" || TString(GetMisalType())=="full") | |
73 | { | |
74 | ||
75 | for (Int_t imod=0; imod<2; imod++) | |
76 | { | |
77 | dx = gRandom->Gaus(0.,sigmatr); | |
78 | dy = gRandom->Gaus(0.,sigmatr); | |
79 | dz = gRandom->Gaus(0.,sigmatr); | |
80 | dpsi = gRandom->Gaus(0.,sigmarot); | |
81 | dtheta = gRandom->Gaus(0.,sigmarot); | |
82 | dphi = gRandom->Gaus(0.,sigmarot); | |
83 | new(alobj[imod]) AliAlignObjParams(symName[imod].Data(), volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE); | |
84 | } | |
85 | ||
86 | }else{ | |
87 | AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType())); | |
88 | return 0; | |
89 | } | |
90 | ||
91 | return array; | |
92 | } | |
93 | ||
94 | //_______________________________________________________________________________________ | |
95 | AliCDBMetaData* AliT0MisAligner::GetCDBMetaData() const { | |
96 | // Returns the comment and responsible for the | |
97 | // AliCDBMetaData to be associated with the OCDB entry | |
98 | // containing the T0 array of misalignment objects | |
99 | // | |
100 | AliCDBMetaData* md = new AliCDBMetaData(); | |
101 | md->SetResponsible("Tomasz Malkiewicz"); | |
102 | ||
103 | if(TString(GetMisalType())=="ideal") | |
104 | md->SetComment("Alignment objects for T0 ideal misalignment"); | |
105 | if(TString(GetMisalType())=="residual") | |
106 | md->SetComment("Alignment objects for T0 residual misalignment"); | |
107 | if(TString(GetMisalType())=="full") | |
108 | md->SetComment("Alignment objects for T0 full misalignment"); | |
109 | ||
110 | return md; | |
111 | } |