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[u/mrichter/AliRoot.git] / HMPID / AliHMPIDParam.cxx
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d3da6dc4 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()
97eadc2b 25#include <TGeoPhysicalNode.h> //ctor
ae5a42aa 26#include <TGeoBBox.h>
d3da6dc4 27ClassImp(AliHMPIDParam)
28
ae5a42aa 29
30Float_t AliHMPIDParam::fgkMinPcX[]={0.,0.,0.,0.,0.,0.};
31Float_t AliHMPIDParam::fgkMaxPcX[]={0.,0.,0.,0.,0.,0.};
32Float_t AliHMPIDParam::fgkMinPcY[]={0.,0.,0.,0.,0.,0.};
33Float_t AliHMPIDParam::fgkMaxPcY[]={0.,0.,0.,0.,0.,0.};
34
35Float_t AliHMPIDParam::fgCellX=0.;
36Float_t AliHMPIDParam::fgCellY=0.;
37
38Float_t AliHMPIDParam::fgPcX=0;
39Float_t AliHMPIDParam::fgPcY=0;
40
41Float_t AliHMPIDParam::fgAllX=0;
42Float_t AliHMPIDParam::fgAllY=0;
43
44Int_t AliHMPIDParam::fgSigmas=4;
45
d3da6dc4 46AliHMPIDParam* AliHMPIDParam::fgInstance=0x0; //singleton pointer
47//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
58fc9564 48AliHMPIDParam::AliHMPIDParam(Bool_t noGeo=kFALSE):TNamed("HmpidParam","default version")
d3da6dc4 49{
50// Here all the intitializition is taken place when AliHMPIDParam::Instance() is invoked for the first time.
58fc9564 51// In particular, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure.
d3da6dc4 52// Note that TGeoManager should be already initialized from geometry.root file
ae5a42aa 53
58fc9564 54 if(noGeo==kTRUE){fgCellX=0.8;fgCellY=0.84;}
55
56 if(noGeo==kFALSE && !gGeoManager)
57 {
58 TGeoManager::Import("geometry.root");
59 if(!gGeoManager) AliFatal("!!!!!!No geometry loaded!!!!!!!");
60 }
61
62 Float_t dead=2.6;// cm of the dead zones between PCs-> See 2CRC2099P1
63 TGeoVolume *pCellVol = gGeoManager->GetVolume("Hcel");
64
65 if(!pCellVol) {
66 fgCellX=0.8;fgCellY=0.84;
67 } else {
68 TGeoBBox *bcell = (TGeoBBox *)pCellVol->GetShape();
69 fgCellX=2.*bcell->GetDX(); fgCellY = 2.*bcell->GetDY();
70 }
71
72 fgPcX=80.*fgCellX; fgPcY = 48.*fgCellY;
73 fgAllX=2.*fgPcX+dead;
74 fgAllY=3.*fgPcY+2.*dead;
ae5a42aa 75
58fc9564 76 fgkMinPcX[1]=fgPcX+dead; fgkMinPcX[3]=fgkMinPcX[1]; fgkMinPcX[5]=fgkMinPcX[3];
77 fgkMaxPcX[0]=fgPcX; fgkMaxPcX[2]=fgkMaxPcX[0]; fgkMaxPcX[4]=fgkMaxPcX[2];
78 fgkMaxPcX[1]=fgAllX; fgkMaxPcX[3]=fgkMaxPcX[1]; fgkMaxPcX[5]=fgkMaxPcX[3];
ae5a42aa 79
58fc9564 80 fgkMinPcY[2]=fgPcY+dead; fgkMinPcY[3]=fgkMinPcY[2];
81 fgkMinPcY[4]=2.*fgPcY+2.*dead; fgkMinPcY[5]=fgkMinPcY[4];
82 fgkMaxPcY[0]=fgPcY; fgkMaxPcY[1]=fgkMaxPcY[0];
83 fgkMaxPcY[2]=2.*fgPcY+dead; fgkMaxPcY[3]=fgkMaxPcY[2];
84 fgkMaxPcY[4]=fgAllY; fgkMaxPcY[5]=fgkMaxPcY[4];
ae5a42aa 85
86 fX=0.5*SizeAllX();
87 fY=0.5*SizeAllY();
58fc9564 88
ae5a42aa 89 for(Int_t i=kMinCh;i<=kMaxCh;i++)
97eadc2b 90 if(gGeoManager && gGeoManager->IsClosed()) {
2df6b16e 91 TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(Form("/HMPID/Chamber%i",i));
97eadc2b 92 if (!pne) {
93 AliErrorClass(Form("The symbolic volume %s does not correspond to any physical entry!",Form("HMPID_%i",i)));
94 fM[i]=new TGeoHMatrix;
95 IdealPosition(i,fM[i]);
96 } else {
97 TGeoPhysicalNode *pnode = pne->GetPhysicalNode();
f80e1da4 98 if(pnode) fM[i]=pnode->GetMatrix();
99 else {
100 fM[i]=new TGeoHMatrix;
101 IdealPosition(i,fM[i]);
102 }
97eadc2b 103 }
104 } else{
1d4857c5 105 fM[i]=new TGeoHMatrix;
106 IdealPosition(i,fM[i]);
107 }
d3da6dc4 108 fgInstance=this;
109}//ctor
110//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
111void AliHMPIDParam::Print(Option_t* opt) const
112{
113// print some usefull (hopefully) info on some internal guts of HMPID parametrisation
114
115 for(Int_t i=0;i<7;i++) fM[i]->Print(opt);
116}//Print()
117//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1d4857c5 118void AliHMPIDParam::IdealPosition(Int_t iCh, TGeoHMatrix *pMatrix)
119{
120// Construct ideal position matrix for a given chamber
121// Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
122// Returns: none
423554a3 123 const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
124 const Double_t kAngVer=20; // vertical angle between chambers 20 grad
125 const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
126 const Double_t kTrans[3]={490,0,0}; // center of the chamber is on window-gap surface
127 pMatrix->RotateY(90); // rotate around y since initial position is in XY plane -> now in YZ plane
128 pMatrix->SetTranslation(kTrans); // now plane in YZ is shifted along x
1d4857c5 129 switch(iCh){
130 case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
131 case 1: pMatrix->RotateZ(-kAngVer); break; //down
132 case 2: pMatrix->RotateY(kAngHor); break; //right
133 case 3: break; //no rotation
134 case 4: pMatrix->RotateY(-kAngHor); break; //left
135 case 5: pMatrix->RotateZ(kAngVer); break; //up
136 case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
137 }
138 pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
139
140}
141//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
d3da6dc4 142Int_t AliHMPIDParam::Stack(Int_t evt,Int_t tid)
143{
d1bf51e1 144// Prints some useful info from stack
d3da6dc4 145// Arguments: evt - event number. if not -1 print info only for that event
146// tid - track id. if not -1 then print it and all it's mothers if any
147// Returns: mother tid of the given tid if any
148 AliRunLoader *pAL=AliRunLoader::Open();
149 if(pAL->LoadHeader()) return -1;
150 if(pAL->LoadKinematics()) return -1;
151
152 Int_t mtid=-1;
cf7e313e 153 Int_t iNevt=pAL->GetNumberOfEvents();
d3da6dc4 154
155 for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
156 if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others
157 pAL->GetEvent(iEvt);
158 AliStack *pStack=pAL->Stack();
159 if(tid==-1){ //print all tids for this event
160 for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
161 Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt);
162 }else{ //print only this tid and it;s mothers
163 if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;}
164 TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother();
165 TString str=pTrack->GetName();
166 while((tid=pTrack->GetFirstMother()) >= 0){
167 pTrack=pStack->Particle(tid);
168 str+=" from ";str+=pTrack->GetName();
169 }
d3da6dc4 170 }//if(tid==-1)
171 }//events loop
172 pAL->UnloadHeader(); pAL->UnloadKinematics();
173 return mtid;
174}
175//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
176Int_t AliHMPIDParam::StackCount(Int_t pid,Int_t evt)
177{
178// Counts total number of particles of given sort (including secondary) for a given event
179 AliRunLoader *pAL=AliRunLoader::Open();
180 pAL->GetEvent(evt);
181 if(pAL->LoadHeader()) return 0;
182 if(pAL->LoadKinematics()) return 0;
183 AliStack *pStack=pAL->Stack();
184
185 Int_t iCnt=0;
186 for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++;
187
188 pAL->UnloadHeader(); pAL->UnloadKinematics();
189 return iCnt;
190}
191//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++