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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 * |
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 | #include "AliHMPIDParam.h" //class header |
16 | #include "AliHMPIDDigit.h" //ctor |
17 | #include <TCanvas.h> //TestXXX() |
18 | #include <TLatex.h> //TestTrans() |
19 | #include <TView.h> //TestTrans() |
20 | #include <TPolyMarker3D.h> //TestTrans() |
21 | #include <TRotation.h> |
22 | #include <AliRunLoader.h> //Stack() |
23 | #include <AliStack.h> //Stack() |
24 | #include <TParticle.h> //Stack() |
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25 | #include <TGeoPhysicalNode.h> //ctor |
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26 | |
27 | ClassImp(AliHMPIDParam) |
28 | |
29 | AliHMPIDParam* AliHMPIDParam::fgInstance=0x0; //singleton pointer |
30 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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31 | AliHMPIDParam::AliHMPIDParam():TNamed("HmpidParam","default version") |
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32 | { |
33 | // Here all the intitializition is taken place when AliHMPIDParam::Instance() is invoked for the first time. |
34 | // In particulare, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure. |
35 | // Note that TGeoManager should be already initialized from geometry.root file |
36 | fX=0.5*AliHMPIDDigit::SizeAllX(); |
37 | fY=0.5*AliHMPIDDigit::SizeAllY(); |
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38 | for(Int_t i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++) |
39 | if(gGeoManager && gGeoManager->IsClosed()) { |
40 | // fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("HMPID_%i",i))->GetMatrix(); // previous style |
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41 | TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(Form("/HMPID/Chamber%i",i)); |
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42 | if (!pne) { |
43 | AliErrorClass(Form("The symbolic volume %s does not correspond to any physical entry!",Form("HMPID_%i",i))); |
44 | fM[i]=new TGeoHMatrix; |
45 | IdealPosition(i,fM[i]); |
46 | } else { |
47 | TGeoPhysicalNode *pnode = pne->GetPhysicalNode(); |
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48 | if(pnode) fM[i]=pnode->GetMatrix(); |
49 | else { |
50 | fM[i]=new TGeoHMatrix; |
51 | IdealPosition(i,fM[i]); |
52 | } |
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53 | } |
54 | } else{ |
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55 | fM[i]=new TGeoHMatrix; |
56 | IdealPosition(i,fM[i]); |
57 | } |
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58 | fgInstance=this; |
59 | }//ctor |
60 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
61 | void AliHMPIDParam::Print(Option_t* opt) const |
62 | { |
63 | // print some usefull (hopefully) info on some internal guts of HMPID parametrisation |
64 | |
65 | for(Int_t i=0;i<7;i++) fM[i]->Print(opt); |
66 | }//Print() |
67 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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68 | void AliHMPIDParam::IdealPosition(Int_t iCh, TGeoHMatrix *pMatrix) |
69 | { |
70 | // Construct ideal position matrix for a given chamber |
71 | // Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results |
72 | // Returns: none |
73 | const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad |
74 | const Double_t kAngVer=20; // vertical angle between chambers 20 grad |
75 | const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad |
76 | const Double_t trans[3]={490,0,0}; //center of the chamber is on window-gap surface |
77 | pMatrix->RotateY(90); //rotate around y since initial position is in XY plane -> now in YZ plane |
78 | pMatrix->SetTranslation(trans); //now plane in YZ is shifted along x |
79 | switch(iCh){ |
80 | case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down |
81 | case 1: pMatrix->RotateZ(-kAngVer); break; //down |
82 | case 2: pMatrix->RotateY(kAngHor); break; //right |
83 | case 3: break; //no rotation |
84 | case 4: pMatrix->RotateY(-kAngHor); break; //left |
85 | case 5: pMatrix->RotateZ(kAngVer); break; //up |
86 | case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up |
87 | } |
88 | pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane |
89 | |
90 | } |
91 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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92 | Int_t AliHMPIDParam::Stack(Int_t evt,Int_t tid) |
93 | { |
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94 | // Prints some useful info from stack |
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95 | // Arguments: evt - event number. if not -1 print info only for that event |
96 | // tid - track id. if not -1 then print it and all it's mothers if any |
97 | // Returns: mother tid of the given tid if any |
98 | AliRunLoader *pAL=AliRunLoader::Open(); |
99 | if(pAL->LoadHeader()) return -1; |
100 | if(pAL->LoadKinematics()) return -1; |
101 | |
102 | Int_t mtid=-1; |
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103 | Int_t iNevt=pAL->GetNumberOfEvents(); |
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104 | |
105 | for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop |
106 | if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others |
107 | pAL->GetEvent(iEvt); |
108 | AliStack *pStack=pAL->Stack(); |
109 | if(tid==-1){ //print all tids for this event |
110 | for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print(); |
111 | Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt); |
112 | }else{ //print only this tid and it;s mothers |
113 | if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;} |
114 | TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother(); |
115 | TString str=pTrack->GetName(); |
116 | while((tid=pTrack->GetFirstMother()) >= 0){ |
117 | pTrack=pStack->Particle(tid); |
118 | str+=" from ";str+=pTrack->GetName(); |
119 | } |
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120 | }//if(tid==-1) |
121 | }//events loop |
122 | pAL->UnloadHeader(); pAL->UnloadKinematics(); |
123 | return mtid; |
124 | } |
125 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
126 | Int_t AliHMPIDParam::StackCount(Int_t pid,Int_t evt) |
127 | { |
128 | // Counts total number of particles of given sort (including secondary) for a given event |
129 | AliRunLoader *pAL=AliRunLoader::Open(); |
130 | pAL->GetEvent(evt); |
131 | if(pAL->LoadHeader()) return 0; |
132 | if(pAL->LoadKinematics()) return 0; |
133 | AliStack *pStack=pAL->Stack(); |
134 | |
135 | Int_t iCnt=0; |
136 | for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++; |
137 | |
138 | pAL->UnloadHeader(); pAL->UnloadKinematics(); |
139 | return iCnt; |
140 | } |
141 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |